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1. Systemic Metabolomics in a Framework of Genetics and Lifestyle in Age-Related Macular Degeneration

Author

Eric F. Thee, İlhan E. Acar, Johanna M. Colijn, Magda A. Meester-Smoor, Timo Verzijden, Sara J. Baart, Mohamed A. Jarboui, Sascha Fauser, Carel B. Hoyng, Marius Ueffing, Anneke I. den Hollander, and Caroline C. W. Klaver

Subjects
age-related macular degeneration, Europe, metabolomics, genetics, lifestyle, Microbiology, QR1-502
Abstract

Insights into the pathogenesis of age-related macular degeneration (AMD), a leading cause of blindness, point towards a complex interplay of genetic and lifestyle factors triggering various systemic pathways. This study aimed to characterize metabolomic profiles for AMD and to evaluate their position in the trias with genetics and lifestyle. This study included 5923 individuals from five European studies. Blood metabolomics were assessed using a nuclear magnetic resonance platform of 146 metabolites. Associations were studied using regression analyses. A genetic risk score (GRS) was calculated using β-values of 49 AMD variants, a lifestyle risk score (LRS) using smoking and diet data, and a metabolite risk score (MRS) using metabolite values. We identified 61 metabolites associated with early-intermediate AMD, of which 94% were lipid-related, with higher levels of HDL-subparticles and apolipoprotein-A1, and lower levels of VLDL-subparticles, triglycerides, and fatty acids (false discovery rate (FDR) p-value < 1.4 × 10−2). Late AMD was associated with lower levels of the amino acids histidine, leucine, valine, tyrosine, and phenylalanine, and higher levels of the ketone bodies acetoacetate and 3-hydroxybutyrate (FDR p-value < 1.5 × 10−3). A favorable lifestyle characterized by a healthy diet was associated with higher levels of amino acids and lower levels of ketone bodies, while an unfavorable lifestyle, including smoking, showed opposite effects (FDR p-value < 2.7 × 10−2). The MRS mediated 5% of the effect of the GRS and 20% of that of the LRS on late AMD. Our findings show that metabolomic profiles differ between AMD stages and show that blood metabolites mostly reflect lifestyle. The severity-specific profiles spur further interest into the systemic effects related to disease conversion.

Published
2023
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2. Generation of an iPSC line (SCTCi014-A) and isogenic control line (SCTCi014-A-1) from an age-related macular degeneration patient carrying the variant c.355G>A in the CFI gene

Author

Sarah de Jong, Louet Koolen, Irene Vázquez-Domínguez, Anita de Breuk, Silvia Albert, Carel B. Hoyng, Suresh Katti, Anneke I. den Hollander, and Alejandro Garanto

Subjects
Biology (General), QH301-705.5
Abstract

Age-related macular degeneration (AMD) is a common eye disease among the elderly in the Western world. AMD is a multifactorial disease, with a strong association with genetic variation in the complement system. One of the AMD-associated variants is the c.355G>A (p.Gly119Arg) variant in complement factor I (CFI), a central regulator of complement activation. Here, we report the generation of an iPSC line and its isogenic wildtype control derived from peripheral blood mononuclear cells of a male AMD-affected individual carrying the heterozygous variant c.355G>A (p.Gly119Arg). The line can be utilized to study the effects of this variant in disease-specific cell types.

Published
2022
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3. Generation and characterization of human induced pluripotent stem cells (iPSCs) from three patients with age-related macular degeneration carrying rare variants in the CFH gene

Author

Louet Koolen, Giuliana Gagliardi, Sofie C.A. ten Brink, Anita de Breuk, Thomas J. Heesterbeek, Carel B. Hoyng, Silvia Albert, and Anneke I. den Hollander

Subjects
Biology (General), QH301-705.5
Abstract

Age-related macular degeneration (AMD) is a major cause of vision loss among the elderly in the Western world. AMD is multifactorial eye disease with a strong genetic contribution. Here, we report the generation and characterization of induced pluripotent stem cells (iPSCs) derived from peripheral blood mononuclear cells of three patients with AMD carrying rare variants in the complement factor H (CFH) gene. These cell lines were generated for cellular studies investigating the disease mechanisms and developing therapeutic interventions for AMD.

Published
2022
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4. Generation and characterization of human induced pluripotent stem cells (iPSCs) from three individuals without age-related macular degeneration

Author

Louet Koolen, Giuliana Gagliardi, Sofie C.A. ten Brink, Anita de Breuk, Thomas J. Heesterbeek, Carel B. Hoyng, Silvia Albert, and Anneke I. den Hollander

Subjects
Biology (General), QH301-705.5
Abstract

Age-related macular degeneration (AMD) is a major cause of vision loss among the elderly in the Western world. AMD is multifactorial eye disease with a strong genetic contribution. Here, we report the generation and characterization of induced pluripotent stem cells (iPSCs) derived from peripheral blood mononuclear cells of three individuals above 70 years of age without AMD. These cell lines were generated to serve as control lines for cellular studies investigating the disease mechanisms and developing therapeutic interventions for AMD.

Published
2022
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5. Increased circulating levels of Factor H-Related Protein 4 are strongly associated with age-related macular degeneration

Author

Valentina Cipriani, Laura Lorés-Motta, Fan He, Dina Fathalla, Viranga Tilakaratna, Selina McHarg, Nadhim Bayatti, İlhan E. Acar, Carel B. Hoyng, Sascha Fauser, Anthony T. Moore, John R. W. Yates, Eiko K. de Jong, B. Paul Morgan, Anneke I. den Hollander, Paul N. Bishop, and Simon J. Clark

Subjects
Science
Abstract

A locus on chromosome 1 encompassing the CFHR genes is highly associated with AMD risk. Here, Cipriani and colleagues investigate the role of CFHR4, encoding FHR-4, and demonstrate a relationship between AMD risk, circulating FHR-4 levels and genetic variants at this locus.

Published
2020
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6. Functional Analysis of Variants in Complement Factor I Identified in Age-Related Macular Degeneration and Atypical Hemolytic Uremic Syndrome

Author

Sarah de Jong, Anita de Breuk, Bjorn Bakker, Suresh Katti, Carel B. Hoyng, Sara C. Nilsson, Anna M. Blom, Lambert P. van den Heuvel, Anneke I. den Hollander, and Elena B. Volokhina

Subjects
complement factor I, genetic variants, age-related macular degeneration, atypical hemolytic uremic syndrome, functional analysis, Immunologic diseases. Allergy, RC581-607
Abstract

Complement factor I (FI) is a central inhibitor of the complement system, and impaired FI function increases complement activation, contributing to diseases such as age-related macular degeneration (AMD) and atypical hemolytic uremic syndrome (aHUS). Genetic variation in complement factor I (CFI) has been identified in both AMD and aHUS, with more than half of these variants leading to reduced FI secretion levels. For many of the variants with normal FI secretion, however, functional implications are not yet known. Here we studied 11 rare missense variants, with FI secretion levels comparable to wildtype, but a predicted damaging effects based on the Combined Annotation Dependent Depletion (CADD) score. Three variants (p.Pro50Ala, p.Arg339Gln, and p.Ser570Thr) were analyzed in plasma and serum samples of carriers affected by AMD. All 11 variants (nine for the first time in this study) were recombinantly expressed and the ability to degrade C3b was studied with the C3b degradation assay. The amount of degradation was determined by measuring the degradation product iC3b with ELISA. Eight of 11 (73%) mutant proteins (p.Pro50Ala, p.Arg339Gln, p.Ile340Thr, p.Gly342Glu, p.Gly349Arg, p.Arg474Gln, p.Gly487Cys, and p.Gly512Ser) showed significantly impaired C3b degradation, and were therefore classified as likely pathogenic. Our data indicate that genetic variants in CFI with a CADD score >20 are likely to affect FI function, and that monitoring iC3b in a degradation assay is a useful tool to establish the pathogenicity of CFI variants in functional studies.

Published
2022
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7. Genetic Risk in Families with Age-Related Macular Degeneration

Author

Anita de Breuk, MD, Yara T.E. Lechanteur, MD, PhD, Thomas J. Heesterbeek, MD, PhD, Sascha Fauser, MD, PhD, Caroline C.W. Klaver, MD, PhD, Carel B. Hoyng, MD, PhD, and Anneke I. den Hollander, PhD

Subjects
Age-related macular degeneration, Complement factor H, Complement factor I, Complement system, Genetic risk score, Ophthalmology, RE1-994
Abstract

Purpose: To determine the contribution of common and rare genetic risk variants in families with age-related macular degeneration (AMD). Design: Case-control study. Participants: A family cohort (355 affected and 342 unaffected family members from 144 families with AMD) and an unrelated case-control cohort (1078 patients, 952 controls), recruited from the European Genetic Database. Methods: Genetic data of both cohorts were filtered for carriership of rare genetic variants in the coding and splice-site regions of the complement factor H (CFH) and complement factor I (CFI) genes, and 52 AMD-associated variants were extracted for calculation of genetic risk scores (GRS). To compare GRSs between familial and nonfamilial rare CFH and CFI variant carriers and noncarriers and between AMD disease stages, we performed a 2-way analysis of variance, with Bonferroni correction for multiple testing. Within families with AMD carrying rare CFH and CFI variants, we analyzed segregation patterns by calculating the proportion of affected among carriers. Main Outcome Measures: GRSs and segregation of rare CFH and CFI variants. Results: We observed higher GRSs in familial versus nonfamilial individuals without rare CFH and CFI variants: mean GRS, 1.76 (standard error [SE], 0.08) versus 0.83 (SE, 0.03; P < 0.001). In 51 of 144 families (35.4%), rare CFH and CFI variants were identified. Within the AMD family cohort, carriers of rare CFH and CFI variants showed lower GRSs compared with noncarriers (mean GRS, 1.05 [SE, 0.23] vs. 1.76 [SE, 0.08]; P = 0.02). The proportion of affected family members with a high GRS was 57.3% (176/307). Of the affected family members with a low or intermediate GRS, 40.0% carried rare CFH or CFI variants. Among carriers of 11 rare CFH or CFI variants, the proportion affected by AMD was more than 75%. Conclusions: Genetic risk in families with AMD often is attributed to high GRSs based on common variants. However, in part of the families with a low or intermediate GRS, rare CFH and CFI variants contributed to disease development. We recommend computing GRSs and sequencing the CFH and CFI genes in families with AMD, in particular in the light of ongoing gene-specific clinical trials.

Published
2021
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8. Whole-genome methylation profiling of the retinal pigment epithelium of individuals with age-related macular degeneration reveals differential methylation of the SKI, GTF2H4, and TNXB genes

Author

Louise F. Porter, Neil Saptarshi, Yongxiang Fang, Sonika Rathi, Anneke I. den Hollander, Eiko K. de Jong, Simon J. Clark, Paul N. Bishop, Timothy W. Olsen, Triantafillos Liloglou, Venkata R. M. Chavali, and Luminita Paraoan

Subjects
Medicine, Genetics, QH426-470
Abstract

Abstract Background Age-related macular degeneration (AMD) is a degenerative disorder of the central retina and the foremost cause of blindness. The retinal pigment epithelium (RPE) is a primary site of disease pathogenesis. The genetic basis of AMD is relatively well understood; however, this knowledge is yet to yield a treatment for the most prevalent non-neovascular disease forms. Therefore, tissue-specific epigenetic mechanisms of gene regulation are of considerable interest in AMD. We aimed to identify differentially methylated genes associated with AMD in the RPE and differentiate local DNA methylation aberrations from global DNA methylation changes, as local DNA methylation changes may be more amenable to therapeutic manipulation. Methods Epigenome-wide association study and targeted gene expression profiling were carried out in RPE cells from eyes of human donors. We performed genome-wide DNA methylation profiling (Illumina 450k BeadChip array) on RPE cells from 44 human donor eyes (25 AMD and 19 normal controls). We validated the findings using bisulfite pyrosequencing in 55 RPE samples (30 AMD and 25 normal controls) including technical (n = 38) and independent replicate samples (n = 17). Long interspersed nucleotide element 1 (LINE-1) analysis was then applied to assess global DNA methylation changes in the RPE. RT-qPCR on independent donor RPE samples was performed to assess gene expression changes. Results Genome-wide DNA methylation profiling identified differential methylation of multiple loci including the SKI proto-oncogene (SKI) (p = 1.18 × 10−9), general transcription factor IIH subunit H4 (GTF2H4) (p = 7.03 × 10−7), and Tenascin X (TNXB) (p = 6.30 × 10−6) genes in AMD. Bisulfite pyrosequencing validated the differentially methylated locus cg18934822 in SKI, and cg22508626 within GTF2H4, and excluded global DNA methylation changes in the RPE in AMD. We further demonstrated the differential expression of SKI, GTF2H4, and TNXB in the RPE of independent AMD donors. Conclusions We report the largest genome-wide methylation analysis of RPE in AMD along with associated gene expression changes to date, for the first-time reaching genome-wide significance, and identified novel targets for functional and future therapeutic intervention studies. The novel differentially methylated genes SKI and GTF2H4 have not been previously associated with AMD, and regulate disease pathways implicated in AMD, including TGF beta signaling (SKI) and transcription-dependent DNA repair mechanisms (GTF2H4).

Published
2019
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9. ERAP2 Increases the Abundance of a Peptide Submotif Highly Selective for the Birdshot Uveitis-Associated HLA-A29

Author

Wouter J. Venema, Sanne Hiddingh, Joke H. de Boer, Frans H. J. Claas, Arend Mulder, Anneke I. den Hollander, Efstratios Stratikos, Siranush Sarkizova, Lars T. van der Veken, George M. C. Janssen, Peter A. van Veelen, and Jonas J. W. Kuiper

Subjects
Birdshot, HLA-A29, ERAP2, autoimmunity, immunopeptidome, Immunologic diseases. Allergy, RC581-607
Abstract

Birdshot Uveitis (BU) is a blinding inflammatory eye condition that only affects HLA-A29-positive individuals. Genetic association studies linked ERAP2 with BU, an aminopeptidase which trims peptides before their presentation by HLA class I at the cell surface, which suggests that ERAP2-dependent peptide presentation by HLA-A29 drives the pathogenesis of BU. However, it remains poorly understood whether the effects of ERAP2 on the HLA-A29 peptidome are distinct from its effect on other HLA allotypes. To address this, we focused on the effects of ERAP2 on the immunopeptidome in patient-derived antigen presenting cells. Using complementary HLA-A29-based and pan-class I immunopurifications, isotope-labeled naturally processed and presented HLA-bound peptides were sequenced by mass spectrometry. We show that the effects of ERAP2 on the N-terminus of ligands of HLA-A29 are shared across endogenous HLA allotypes, but discover and replicate that one peptide motif generated in the presence of ERAP2 is specifically bound by HLA-A29. This motif can be found in the amino acid sequence of putative autoantigens. We further show evidence for internal sequence specificity for ERAP2 imprinted in the immunopeptidome. These results reveal that ERAP2 can generate an HLA-A29-specific antigen repertoire, which supports that antigen presentation is a key disease pathway in BU.

Published
2021
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10. Systemic complement activation levels in Stargardt disease.

Author

Patty P A Dhooge, Esmee H Runhart, Catherina H Z Li, Corrie M de Kat Angelino, Carel B Hoyng, Renate G van der Molen, and Anneke I den Hollander

Subjects
Medicine, Science
Abstract

PurposePreclinical research provides evidence for the complement system as a potential common pathway in Stargardt disease (STGD1) and age-related macular degeneration (AMD) leading to retinal pigment epithelium (RPE) loss. However, systemic complement activation has not yet been assessed in STGD1 patients. We conducted a cross-sectional case-control study to assess systemic complement activation in STGD1 patients and its association with disease severity.MethodsSystemic concentrations of complement component C3 and its degradation product C3d were compared between 80 STGD1 patients and 80 controls that were frequency matched for age and sex. The C3d/C3 ratio was used as parameter of systemic complement activation. Within the STGD1 cohort, we additionally examined the association between the C3d/C3 ratio, demographic and behavioural factors (age, sex, smoking and BMI), and measures of disease severity (age at onset, visual acuity, and area of atrophy).ResultsThe C3d/C3 ratio did not significantly differ between patients (mean C3d/C3 ratio 3.5±1.4) and controls (mean C3d/C3 ratio 3.6±1.0), mean difference -0.156 (p = 0.804, independent samples t-test). The overall effect size was 8% (95% confidence interval, 3-15%). Elevated C3d/C3 ratios (>8.1) were found in three patients who all had a concomitant inflammatory condition at the time of blood draw. Within the patient cohort, C3 levels were associated with sex (mean difference -134, p = 0.001, independent samples t-test) and BMI (correlation coefficient 0.463, pConclusionsSystemic complement levels were not elevated in STGD1 patients compared to age and sex matched controls and was not associated with STGD1 severity. Considering the continued absent proof of a systemic contribution of the complement system to RPE loss in STGD1 patients, we hypothesize that complement activation in STGD1 is more likely a local process. In light of upcoming complement-targeted therapies, further studies are needed that measure complement levels in the eye of STGD1 patients.

Published
2021
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11. Regulation of ABCA1 by AMD-Associated Genetic Variants and Hypoxia in iPSC-RPE

Author

Florian Peters, Lynn J. A. Ebner, David Atac, Jordi Maggi, Wolfgang Berger, Anneke I. den Hollander, and Christian Grimm

Subjects
ABCA1, lipid accumulation, hypoxia, iPSC-RPE, reverse cholesterol transport, age-related macular degeneration, Biology (General), QH301-705.5, Chemistry, QD1-999
Abstract

Age-related macular degeneration (AMD) is a progressive disease of the macula characterized by atrophy of the retinal pigment epithelium (RPE) and photoreceptor degeneration, leading to severe vision loss at advanced stages in the elderly population. Impaired reverse cholesterol transport (RCT) as well as intracellular lipid accumulation in the RPE are implicated in AMD pathogenesis. Here, we focus on ATP-binding cassette transporter A1 (ABCA1), a major cholesterol transport protein in the RPE, and analyze conditions that lead to ABCA1 dysregulation in induced pluripotent stem cell (iPSC)-derived RPE cells (iRPEs). Our results indicate that the risk-conferring alleles rs1883025 (C) and rs2740488 (A) in ABCA1 are associated with increased ABCA1 mRNA and protein levels and reduced efficiency of cholesterol efflux from the RPE. Hypoxia, an environmental risk factor for AMD, reduced expression of ABCA1 and increased intracellular lipid accumulation. Treatment with a liver X receptor (LXR) agonist led to an increase in ABCA1 expression and reduced lipid accumulation. Our data strengthen the homeostatic role of cholesterol efflux in the RPE and suggest that increasing cellular cholesterol export by stimulating ABCA1 expression might lessen lipid load, improving RPE survival and reducing the risk of developing AMD.

Published
2022
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12. Common and rare variants in patients with early onset drusen maculopathy

Author

Anita de Breuk, Yara T. E. Lechanteur, Galuh Astuti, Jordi Corominas Galbany, Caroline C. W. Klaver, Carel B. Hoyng, Anneke I. den Hollander, and Ophthalmology

Subjects
Macular Degeneration, Whole Genome Sequencing, Complement Factor H, Genetics, Quality of Life, Humans, Genetics (clinical), Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12]
Abstract

Contains fulltext : 288257.pdf (Publisher’s version ) (Open Access) Early onset drusen maculopathy (EODM) can lead to advanced macular degeneration at a young age, affecting quality of life. However, the genetic causes of EODM are not well studied. We performed whole genome sequencing in 49 EODM patients. Common genetic variants were analysed by calculating genetic risk scores based on 52 age-related macular generation (AMD)-associated variants, and we analysed rare variants in candidate genes to identify potential deleterious variants that might contribute to EODM development. We demonstrate that the 52 AMD-associated variants contributed to EODM, especially variants located in the complement pathway. Furthermore, we identified 26 rare genetic variants predicted to be pathogenic based on in silico prediction tools or based on reported pathogenicity in literature. These variants are located predominantly in the complement and lipid metabolism pathways. Last, evaluation of 18 genes causing inherited retinal dystrophies that can mimic AMD characteristics, revealed 11 potential deleterious variants in eight EODM patients. However, phenotypic characteristics did not point towards a retinal dystrophy in these patients. In conclusion, this study reports new insights into rare variants that are potentially involved in EODM development, and which are relevant for future studies unravelling the aetiology of EODM.

Published
2022

13. Metabolomics in serum of patients with non-advanced age-related macular degeneration reveals aberrations in the glutamine pathway.

Author

Eveline Kersten, Sascha Dammeier, Soufiane Ajana, Joannes M M Groenewoud, Marius Codrea, Franziska Klose, Yara T Lechanteur, Sascha Fauser, Marius Ueffing, Cécile Delcourt, Carel B Hoyng, Eiko K de Jong, Anneke I den Hollander, and EYE-RISK Consortium

Subjects
Medicine, Science
Abstract

Age-related macular degeneration (AMD) is a common, progressive multifactorial vision-threatening disease and many genetic and environmental risk factors have been identified. The risk of AMD is influenced by lifestyle and diet, which may be reflected by an altered metabolic profile. Therefore, measurements of metabolites could identify biomarkers for AMD, and could aid in identifying high-risk individuals. Hypothesis-free technologies such as metabolomics have a great potential to uncover biomarkers or pathways that contribute to disease pathophysiology. To date, only a limited number of metabolomic studies have been performed in AMD. Here, we aim to contribute to the discovery of novel biomarkers and metabolic pathways for AMD using a targeted metabolomics approach of 188 metabolites. This study focuses on non-advanced AMD, since there is a need for biomarkers for the early stages of disease before severe visual loss has occurred. Targeted metabolomics was performed in 72 patients with early or intermediate AMD and 72 control individuals, and metabolites predictive for AMD were identified by a sparse partial least squares discriminant analysis. In our cohort, we identified four metabolite variables that were most predictive for early and intermediate stages of AMD. Increased glutamine and phosphatidylcholine diacyl C28:1 levels were detected in non-advanced AMD cases compared to controls, while the rate of glutaminolysis and the glutamine to glutamate ratio were reduced in non-advanced AMD. The association of glutamine with non-advanced AMD corroborates a recent report demonstrating an elevated glutamine level in early AMD using a different metabolomics technique. In conclusion, this study indicates that metabolomics is a suitable method for the discovery of biomarker candidates for AMD. In the future, larger metabolomics studies could add to the discovery of novel biomarkers in yet unknown AMD pathways and expand our insights in AMD pathophysiology.

Published
2019
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14. A Multi-Omics Approach Identifies Key Regulatory Pathways Induced by Long-Term Zinc Supplementation in Human Primary Retinal Pigment Epithelium

Author

Eszter Emri, Elod Kortvely, Sascha Dammeier, Franziska Klose, David Simpson, EYE-RISK Consortium, Anneke I. den Hollander, Marius Ueffing, and Imre Lengyel

Subjects
zinc, retinal pigment epithelium, age-related macular degeneration, transcriptome, proteome, secretome, Nutrition. Foods and food supply, TX341-641
Abstract

In age-related macular degeneration (AMD), both systemic and local zinc levels decline. Elevation of zinc in clinical studies delayed the progression to end-stage AMD. However, the molecular pathways underpinning this beneficial effect are not yet identified. In this study, we used differentiated primary human fetal retinal pigment epithelium (RPE) cultures and long-term zinc supplementation to carry out a combined transcriptome, proteome and secretome analysis from three genetically different human donors. After combining significant differences, we identified the complex molecular networks using Database for Annotation, Visualization and Integrated Discovery (DAVID) and Ingenuity Pathway Analysis (IPA). The cell cultures from the three donors showed extensive pigmentation, development of microvilli and basal infoldings and responded to zinc supplementation with an increase in transepithelial electrical resistance (TEER) (apical supplementation: 443.2 ± 79.3%, basal supplementation: 424.9 ± 116.8%, compared to control: 317.5 ± 98.2%). Significant changes were observed in the expression of 1044 genes, 151 cellular proteins and 124 secreted proteins. Gene set enrichment analysis revealed changes in specific molecular pathways related to cell adhesion/polarity, extracellular matrix organization, protein processing/transport, and oxidative stress response by zinc and identified a key upstream regulator effect similar to that of TGFB1.

Published
2020
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15. Aberrant leukocyte telomere length in Birdshot Uveitis.

Author

Nadia Vazirpanah, Fleurieke H Verhagen, Anna Rothova, Tom O A R Missotten, Mirjam van Velthoven, Anneke I Den Hollander, Carel B Hoyng, Timothy R D J Radstake, Jasper C A Broen, and Jonas J W Kuiper

Subjects
Medicine, Science
Abstract

Birdshot Uveitis (BU) is an archetypical chronic inflammatory eye disease, with poor visual prognosis, that provides an excellent model for studying chronic inflammation. BU typically affects patients in the fifth decade of life. This suggests that it may represent an age-related chronic inflammatory disease, which has been linked to increased erosion of telomere length of leukocytes.To study this in detail, we exploited a sensitive standardized quantitative real-time polymerase chain reaction to determine the peripheral blood leukocyte telomere length (LTL) in 91 genotyped Dutch BU patients and 150 unaffected Dutch controls.Although LTL erosion rates were very similar between BU patients and healthy controls, we observed that BU patients displayed longer LTL, with a median of log (LTL) = 4.87 (= 74131 base pair) compared to 4.31 (= 20417 base pair) in unaffected controls (P

Published
2017
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16. Metabolomics and Age-Related Macular Degeneration

Author

Connor N. Brown, Brian D. Green, Richard B. Thompson, Anneke I. den Hollander, Imre Lengyel, and on behalf of the EYE-RISK consortium

Subjects
Age-related macular degeneration, metabolomics, metabolism, biomarkers, drusen, retinal pigment epithelium, Microbiology, QR1-502
Abstract

Age-related macular degeneration (AMD) leads to irreversible visual loss, therefore, early intervention is desirable, but due to its multifactorial nature, diagnosis of early disease might be challenging. Identification of early markers for disease development and progression is key for disease diagnosis. Suitable biomarkers can potentially provide opportunities for clinical intervention at a stage of the disease when irreversible changes are yet to take place. One of the most metabolically active tissues in the human body is the retina, making the use of hypothesis-free techniques, like metabolomics, to measure molecular changes in AMD appealing. Indeed, there is increasing evidence that metabolic dysfunction has an important role in the development and progression of AMD. Therefore, metabolomics appears to be an appropriate platform to investigate disease-associated biomarkers. In this review, we explored what is known about metabolic changes in the retina, in conjunction with the emerging literature in AMD metabolomics research. Methods for metabolic biomarker identification in the eye have also been discussed, including the use of tears, vitreous, and aqueous humor, as well as imaging methods, like fluorescence lifetime imaging, that could be translated into a clinical diagnostic tool with molecular level resolution.

Published
2018
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17. Regulation of ABCA1 by AMD-Associated Genetic Variants and Hypoxia in iPSC-RPE

Author

Grimm, Florian Peters, Lynn J. A. Ebner, David Atac, Jordi Maggi, Wolfgang Berger, Anneke I. den Hollander, and Christian

Subjects
genetic structures, ABCA1, lipid accumulation, hypoxia, iPSC-RPE, reverse cholesterol transport, age-related macular degeneration, LXR agonist, polycyclic compounds, lipids (amino acids, peptides, and proteins), sense organs, eye diseases
Abstract

Age-related macular degeneration (AMD) is a progressive disease of the macula characterized by atrophy of the retinal pigment epithelium (RPE) and photoreceptor degeneration, leading to severe vision loss at advanced stages in the elderly population. Impaired reverse cholesterol transport (RCT) as well as intracellular lipid accumulation in the RPE are implicated in AMD pathogenesis. Here, we focus on ATP-binding cassette transporter A1 (ABCA1), a major cholesterol transport protein in the RPE, and analyze conditions that lead to ABCA1 dysregulation in induced pluripotent stem cell (iPSC)-derived RPE cells (iRPEs). Our results indicate that the risk-conferring alleles rs1883025 (C) and rs2740488 (A) in ABCA1 are associated with increased ABCA1 mRNA and protein levels and reduced efficiency of cholesterol efflux from the RPE. Hypoxia, an environmental risk factor for AMD, reduced expression of ABCA1 and increased intracellular lipid accumulation. Treatment with a liver X receptor (LXR) agonist led to an increase in ABCA1 expression and reduced lipid accumulation. Our data strengthen the homeostatic role of cholesterol efflux in the RPE and suggest that increasing cellular cholesterol export by stimulating ABCA1 expression might lessen lipid load, improving RPE survival and reducing the risk of developing AMD.

Published
2022
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18. Identification of Novel Variants in LTBP2 and PXDN Using Whole-Exome Sequencing in Developmental and Congenital Glaucoma.

Author

Shazia Micheal, Sorath Noorani Siddiqui, Saemah Nuzhat Zafar, Aftab Iqbal, Muhammad Imran Khan, and Anneke I den Hollander

Subjects
Medicine, Science
Abstract

Primary congenital glaucoma (PCG) is the most common form of glaucoma in children. PCG occurs due to the developmental defects in the trabecular meshwork and anterior chamber of the eye. The purpose of this study is to identify the causative genetic variants in three families with developmental and primary congenital glaucoma (PCG) with a recessive inheritance pattern.DNA samples were obtained from consanguineous families of Pakistani ancestry. The CYP1B1 gene was sequenced in the affected probands by conventional Sanger DNA sequencing. Whole exome sequencing (WES) was performed in DNA samples of four individuals belonging to three different CYP1B1-negative families. Variants identified by WES were validated by Sanger sequencing.WES identified potentially causative novel mutations in the latent transforming growth factor beta binding protein 2 (LTBP2) gene in two PCG families. In the first family a novel missense mutation (c.4934G>A; p.Arg1645Glu) co-segregates with the disease phenotype, and in the second family a novel frameshift mutation (c.4031_4032insA; p.Asp1345Glyfs*6) was identified. In a third family with developmental glaucoma a novel mutation (c.3496G>A; p.Gly1166Arg) was identified in the PXDN gene, which segregates with the disease.We identified three novel mutations in glaucoma families using WES; two in the LTBP2 gene and one in the PXDN gene. The results will not only enhance our current understanding of the genetic basis of glaucoma, but may also contribute to a better understanding of the diverse phenotypic consequences caused by mutations in these genes.

Published
2016
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19. A Novel Homozygous Mutation in FOXC1 Causes Axenfeld Rieger Syndrome with Congenital Glaucoma.

Author

Shazia Micheal, Sorath Noorani Siddiqui, Saemah Nuzhat Zafar, Cristina Villanueva-Mendoza, Vianney Cortés-González, Muhammad Imran Khan, and Anneke I den Hollander

Subjects
Medicine, Science
Abstract

Anterior segment dysgenesis (ASD) disorders are a group of clinically and genetically heterogeneous phenotypes in which frequently cornea, iris, and lens are affected. This study aimed to identify novel mutations in PAX6, PITX2 and FOXC1 in families with anterior segment dysgenesis disorders.We studied 14 Pakistani and one Mexican family with Axenfeld Rieger syndrome (ARS; n = 10) or aniridia (n = 5). All affected and unaffected family members underwent full ophthalmologic and general examinations. Total genomic DNA was isolated from peripheral blood. PCR and Sanger sequencing were performed for the exons and intron-exon boundaries of the FOXC1, PAX6, and PITX2 genes.Mutations were identified in five of the 15 probands; four variants were novel and one variant was described previously. A novel de novo variant (c.225C>A; p.Tyr75*) was identified in the PAX6 gene in two unrelated probands with aniridia. In addition, a known variant (c.649C>T; p.Arg217*) in PAX6 segregated in a family with aniridia. In the FOXC1 gene, a novel heterozygous variant (c.454T>C; p.Trp152Arg) segregated with the disease in a Mexican family with ARS. A novel homozygous variant (c.92_100del; p.Ala31_Ala33del) in the FOXC1 gene segregated in a Pakistani family with ARS and congenital glaucoma.Our study expands the mutation spectrum of the PAX6 and FOXC1 genes in individuals with anterior segment dysgenesis disorders. In addition, our study suggests that FOXC1 mutations, besides typical autosomal dominant ARS, can also cause ARS with congenital glaucoma through an autosomal recessive inheritance pattern. Our results thus expand the disease spectrum of FOXC1, and may lead to a better understanding of the role of FOXC1 in development.

Published
2016
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20. Genetics of Unilateral and Bilateral Age-Related Macular Degeneration Severity Stages.

Author

Tina Schick, Lebriz Altay, Eva Viehweger, Carel B Hoyng, Anneke I den Hollander, Moritz Felsch, and Sascha Fauser

Subjects
Medicine, Science
Abstract

Age-related macular degeneration (AMD) is a common disease causing visual impairment and blindness. Various gene variants are strongly associated with late stage AMD, but little is known about the genetics of early forms of the disease. This study evaluated associations of genetic factors and different AMD stages depending on unilateral and bilateral disease severity.In this case-control study, participants were assigned to nine AMD severity stages based on the characteristics of each eye. 18 single nucleotide polymorphisms (SNPs) were genotyped and attempted to correlate with AMD severity stages by uni- and multivariate logistic regression analyses and trend analyses. Area under the receiver operating characteristic curves (AUC) were calculated.Of 3444 individuals 1673 were controls, 379 had early AMD, 333 had intermediate AMD and 989 showed late AMD stages. With increasing severity of disease and bilateralism more SNPs with significant associations were found. Odds ratios, especially for the main risk polymorphisms in ARMS2 (rs10490924) and CFH (rs1061170), gained with increasing disease severity and bilateralism (exemplarily: rs1061170: unilateral early AMD: OR = 1.18; bilateral early AMD: OR = 1.20; unilateral intermediate AMD: OR = 1.28; bilateral intermediate AMD: OR = 1.39, unilateral geographic atrophy (GA): OR = 1.50; bilateral GA: OR = 1.71). Trend analyses showed p

Published
2016
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21. Whole Exome Sequencing in Patients with the Cuticular Drusen Subtype of Age-Related Macular Degeneration.

Author

Maheswara R Duvvari, Johannes P H van de Ven, Maartje J Geerlings, Nicole T M Saksens, Bjorn Bakker, Arjen Henkes, Kornelia Neveling, Marisol del Rosario, Dineke Westra, Lambertus P W J van den Heuvel, Tina Schick, Sascha Fauser, Camiel J F Boon, Carel B Hoyng, Eiko K de Jong, and Anneke I den Hollander

Subjects
Medicine, Science
Abstract

Age-related macular degeneration (AMD) is the leading cause of irreversible blindness in elderly people worldwide. Cuticular drusen (CD) is a clinical subtype of AMD, which typically displays an earlier age at onset, and has a strong genetic component. Genetic studies support a role for rare sequence variants in CD susceptibility, and rare sequence variants in the CFH gene have been identified in 8.8% of CD cases. To further explore the role of rare variants in CD, we performed whole exome sequencing (WES) in 14 affected members of six families and 12 sporadic cases with CD. We detected rare sequence variants in CFH and FBLN5, which previously were shown to harbor rare variants in patients with CD. In addition, we detected heterozygous rare sequence variants in several genes encoding components of the extracellular matrix (ECM), including FBLN1, FBLN3/EFEMP1, FBLN5, FBLN6/HMCN1, FBN2, and COL15A1. Two rare pathogenic variants were identified in the COL15A1 gene: one in a sporadic case and another was found to segregate in a family with six affected individuals with CD. In addition, two rare pathogenic variants were identified in the FGL1 gene in three unrelated CD cases. These findings suggest that alterations in the ECM and in the coagulation pathway may play a role in the pathogenesis of CD. The identified candidate genes require further analyses in larger cohorts to confirm their role in the CD subtype of AMD. No evidence was found of rare sequence variants in a single gene that segregate with CD in the six families, suggesting that the disease is genetically heterogeneous.

Published
2016
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22. Analysis of Risk Alleles and Complement Activation Levels in Familial and Non-Familial Age-Related Macular Degeneration.

Author

Nicole T M Saksens, Yara T E Lechanteur, Sanne K Verbakel, Joannes M M Groenewoud, Mohamed R Daha, Tina Schick, Sascha Fauser, Camiel J F Boon, Carel B Hoyng, and Anneke I den Hollander

Subjects
Medicine, Science
Abstract

AIMS:Age-related macular degeneration (AMD) is a multifactorial disease, in which complement-mediated inflammation plays a pivotal role. A positive family history is an important risk factor for developing AMD. Certain lifestyle factors are shown to be significantly associated with AMD in non-familial cases, but not in familial cases. This study aimed to investigate whether the contribution of common genetic variants and complement activation levels differs between familial and sporadic cases with AMD. METHODS AND RESULTS:1216 AMD patients (281 familial and 935 sporadic) and 1043 controls (143 unaffected members with a family history of AMD and 900 unrelated controls without a family history of AMD) were included in this study. Ophthalmic examinations were performed, and lifestyle and family history were documented with a questionnaire. Nine single nucleotide polymorphisms (SNPs) known to be associated with AMD were genotyped, and serum concentrations of complement components C3 and C3d were measured. Associations were assessed in familial and sporadic individuals. The association with risk alleles of the age-related maculopathy susceptibility 2 (ARMS2) gene was significantly stronger in sporadic AMD patients compared to familial cases (p = 0.017 for all AMD stages and p = 0.003 for advanced AMD, respectively). ARMS2 risk alleles had the largest effect in sporadic cases but were not significantly associated with AMD in densely affected families. The C3d/C3 ratio was a significant risk factor for AMD in sporadic cases and may also be associated with familial cases. In patients with a densely affected family this effect was particularly strong with ORs of 5.37 and 4.99 for all AMD and advanced AMD respectively. CONCLUSION:This study suggests that in familial AMD patients, the common genetic risk variant in ARMS2 is less important compared to sporadic AMD. In contrast, factors leading to increased complement activation appear to play a larger role in patients with a positive family history compared to sporadic patients. A better understanding of the different contributions of risk factors in familial compared to non-familial AMD will aid the development of reliable prediction models for AMD, and may provide individuals with more accurate information regarding their individual risk for AMD. This information is especially important for individuals who have a positive family history for AMD.

Published
2016
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23. Genetic and environmental risk factors for extramacular drusen

Author

Lebriz, Altay, Xavier, Subiras, Laura, Lorés de Motta, Tina, Schick, Aileen, Berghold, Carel B, Hoyng, Anneke I, den Hollander, Sascha, Fauser, Srinivas R, Sadda, and Sandra, Liakopoulos

Subjects
Aged, 80 and over, Male, genetic structures, Retinal Drusen, Complement C3, Middle Aged, Polymorphism, Single Nucleotide, eye diseases, Macular Degeneration, Logistic Models, Phenotype, Complement C3d, Risk Factors, Case-Control Studies, Databases, Genetic, Humans, Female, Macula Lutea, Prospective Studies, sense organs, Tomography, Optical Coherence, Aged, Research Article
Abstract

Purpose: To analyze risk factors for extramacular drusen (EMD) in patients with age-related macular degeneration (AMD) and healthy control individuals. Methods: This case-control study included 1,520 patients from the prospective multicenter European Genetic Database (EUGENDA). Color fundus photographs and optical coherence tomography scans were evaluated for the presence of AMD and EMD. EMD was considered present if ten or fewer drusen including at least one intermediate-sized drusen were detected outside the macula. Association of EMD was evaluated with various genetic and non-genetic risk factors (31 single nucleotide polymorphisms, systemic complement activation, smoking, cardiovascular factors, and sunlight exposure) using logistic regression models adjusted for age, gender, and AMD. Results: EMD was found in 608 subjects (40%) and AMD in 763 (50%) of 1,520 participants. EMD was strongly associated with AMD (p = 2.83 × 10−63, odds ratio [OR] 7.63). After adjustment for AMD, age (p = 0.06, OR 1.02), female gender (p = 3.34 × 10−24, OR 4.44), history of sunlight exposure ≥ 8 h /day (p = 0.0004, OR 1.99), serum complement activation (p = 0.004, OR 1.61), and polymorphisms in ARMS2 (p = 0.00016, OR 1.43) and CFI (p = 0.043, OR 1.20) were identified as risk factors for EMD. The final prediction model including these variants showed an area under the curve of 0.820. Conclusions: The comprehensive analysis of various risk factors revealed a common genetic and pathological pathway of EMD with AMD. Future longitudinal studies are needed to evaluate the role of EMD in otherwise healthy subjects as an expanded phenotype of AMD.

Published
2020

24. Homozygosity mapping and targeted sanger sequencing reveal genetic defects underlying inherited retinal disease in families from pakistan.

Author

Maleeha Maria, Muhammad Ajmal, Maleeha Azam, Nadia Khalida Waheed, Sorath Noorani Siddiqui, Bilal Mustafa, Humaira Ayub, Liaqat Ali, Shakeel Ahmad, Shazia Micheal, Alamdar Hussain, Syed Tahir Abbas Shah, Syeda Hafiza Benish Ali, Waqas Ahmed, Yar Muhammad Khan, Anneke I den Hollander, Lonneke Haer-Wigman, Rob W J Collin, Muhammad Imran Khan, Raheel Qamar, and Frans P M Cremers

Subjects
Medicine, Science
Abstract

BackgroundHomozygosity mapping has facilitated the identification of the genetic causes underlying inherited diseases, particularly in consanguineous families with multiple affected individuals. This knowledge has also resulted in a mutation dataset that can be used in a cost and time effective manner to screen frequent population-specific genetic variations associated with diseases such as inherited retinal disease (IRD).MethodsWe genetically screened 13 families from a cohort of 81 Pakistani IRD families diagnosed with Leber congenital amaurosis (LCA), retinitis pigmentosa (RP), congenital stationary night blindness (CSNB), or cone dystrophy (CD). We employed genome-wide single nucleotide polymorphism (SNP) array analysis to identify homozygous regions shared by affected individuals and performed Sanger sequencing of IRD-associated genes located in the sizeable homozygous regions. In addition, based on population specific mutation data we performed targeted Sanger sequencing (TSS) of frequent variants in AIPL1, CEP290, CRB1, GUCY2D, LCA5, RPGRIP1 and TULP1, in probands from 28 LCA families.ResultsHomozygosity mapping and Sanger sequencing of IRD-associated genes revealed the underlying mutations in 10 families. TSS revealed causative variants in three families. In these 13 families four novel mutations were identified in CNGA1, CNGB1, GUCY2D, and RPGRIP1.ConclusionsHomozygosity mapping and TSS revealed the underlying genetic cause in 13 IRD families, which is useful for genetic counseling as well as therapeutic interventions that are likely to become available in the near future.

Published
2015
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25. Variants in the ASB10 Gene Are Associated with Primary Open Angle Glaucoma.

Author

Shazia Micheal, Humaira Ayub, Farrah Islam, Sorath Noorani Siddiqui, Wajid Ali Khan, Farah Akhtar, Raheel Qamar, Muhammad Imran Khan, and Anneke I den Hollander

Subjects
Medicine, Science
Abstract

BACKGROUND:Recently nonsynonymous coding variants in the ankyrin repeats and suppressor of cytokine signaling box-containing protein 10 (ASB10) gene were found to be associated with primary open angle glaucoma (POAG) in cohorts from Oregon and Germany, but this finding was not confirmed in an independent cohort from Iowa. The aim of the current study was to assess the role of ASB10 gene variants in Pakistani glaucoma patients. METHODS:Sanger sequencing of the coding exons and splice junctions of the ASB10 gene was performed in 30 probands of multiplex POAG families, 208 sporadic POAG patients and 151 healthy controls from Pakistan. Genotypic associations of individual variants with POAG were analyzed with the Fisher's exact or Chi-square test. RESULTS:In total 24 variants were identified in POAG probands and sporadic patients, including 11 novel variants and 13 known variants. 13 of the variants were nonsynonymous, 6 were synonymous, and 5 were intronic. Three nonsynonymous variants (p.Arg49Cys, p.Arg237Gly, p.Arg453Cys) identified in the probands were not segregating in the respective families. This is not surprising since glaucoma is a multifactorial disease, and multiple factors are likely to be involved in the disease manifestation in these families. However a nonsynonymous variant, p.Arg453Cys (rs3800791), was found in 6 sporadic POAG patients but not in controls, suggesting that it infers increased risk for the disease. In addition, one synonymous variant was found to be associated with sporadic POAG: p.Ala290Ala and the association of the variant with POAG remained significant after correction for multiple testing (uncorrected p-value 0.002, corrected p-value 0.047). The cumulative burden of rare, nonsynonymous variants was significantly higher in sporadic POAG patients compared to control individuals (p-value 0.000006). CONCLUSIONS:Variants in ASB10 were found to be significantly associated with sporadic POAG in the Pakistani population. This supports previous findings that sequence variants in the ASB10 gene may act as a risk factor for glaucoma.

Published
2015
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26. Zinc supplementation inhibits complement activation in age-related macular degeneration.

Author

Dzenita Smailhodzic, Freekje van Asten, Anna M Blom, Frida C Mohlin, Anneke I den Hollander, Johannes P H van de Ven, Ramon A C van Huet, Joannes M M Groenewoud, Yuan Tian, Tos T J M Berendschot, Yara T E Lechanteur, Sascha Fauser, Chris de Bruijn, Mohamed R Daha, Gert Jan van der Wilt, Carel B Hoyng, and B Jeroen Klevering

Subjects
Medicine, Science
Abstract

UnlabelledAge-related macular degeneration (AMD) is the leading cause of blindness in the Western world. AMD is a multifactorial disorder but complement-mediated inflammation at the level of the retina plays a pivotal role. Oral zinc supplementation can reduce the progression of AMD but the precise mechanism of this protective effect is as yet unclear. We investigated whether zinc supplementation directly affects the degree of complement activation in AMD and whether there is a relation between serum complement catabolism during zinc administration and the complement factor H (CFH) gene or the Age-Related Maculopathy susceptibility 2 (ARMS2) genotype. In this open-label clinical study, 72 randomly selected AMD patients in various stages of AMD received a daily supplement of 50 mg zinc sulphate and 1 mg cupric sulphate for three months. Serum complement catabolism-defined as the C3d/C3 ratio-was measured at baseline, throughout the three months of supplementation and after discontinuation of zinc administration. Additionally, downstream inhibition of complement catabolism was evaluated by measurement of anaphylatoxin C5a. Furthermore, we investigated the effect of zinc on complement activation in vitro. AMD patients with high levels of complement catabolism at baseline exhibited a steeper decline in serum complement activation (pTrial registrationThe Netherlands National Trial Register NTR2605.

Published
2014
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27. Analysis of rare variants in the C3 gene in patients with age-related macular degeneration.

Author

Maheswara R Duvvari, Codrut C Paun, Gabriëlle H S Buitendijk, Nicole T M Saksens, Elena B Volokhina, Tina Ristau, Frederieke E Schoenmaker-Koller, Johannes P H van de Ven, Joannes M M Groenewoud, Lambertus P W J van den Heuvel, Albert Hofman, Sascha Fauser, André G Uitterlinden, Caroline C W Klaver, Carel B Hoyng, Eiko K de Jong, and Anneke I den Hollander

Subjects
Medicine, Science
Abstract

Age-related macular degeneration (AMD) is a progressive retinal disorder affecting over 33 million people worldwide. Genome-wide association studies (GWASs) for AMD identified common variants at 19 loci accounting for 15-65% of the heritability and it has been hypothesized that the missing heritability may be attributed to rare variants with large effect sizes. Common variants in the complement component 3 (C3) gene have been associated with AMD and recently a rare C3 variant (Lys155Gln) was identified which exerts a large effect on AMD susceptibility independent of the common variants. To explore whether additional rare variants in the C3 gene are associated with AMD, we sequenced all coding exons in 84 unrelated AMD cases. Subsequently, we genotyped all identified variants in 1474 AMD cases and 2258 controls. Additionally, because of the known genetic overlap between AMD and atypical hemolytic uremic syndrome (aHUS), we genotyped two recurrent aHUS-associated C3 mutations in the entire cohort. Overall, we identified three rare variants (Lys65Gln (P=0.04), Arg735Trp (OR=17.4, 95% CI=2.2-136; P=0.0003), and Ser1619Arg (OR=5.2, 95% CI=1.0-25; P=0.05) at the C3 locus that are associated with AMD in our EUGENDA cohort. However, the Arg735Trp and Ser1619Arg variants were not found to be associated with AMD in the Rotterdam Study. The Lys65Gln variant was only identified in patients from Nijmegen, the Netherlands, and thus may represent a region-specific AMD risk variant.

Published
2014
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28. Association of a polymorphism in the BIRC6 gene with pseudoexfoliative glaucoma.

Author

Humaira Ayub, Shazia Micheal, Farah Akhtar, Muhammad Imran Khan, Shaheena Bashir, Nadia K Waheed, Mahmood Ali, Frederieke E Schoenmaker-Koller, Sobia Shafique, Raheel Qamar, and Anneke I den Hollander

Subjects
Medicine, Science
Abstract

Recently an association was observed between alleles in genes of the unfolded protein response pathway and primary open angle glaucoma (POAG). The goal of the current study is to investigate the role of these two genes, protein disulphide isomerase A member 5 (PDIA5) and baculoviral IAP repeat containing 6 (BIRC6), in different forms of glaucoma. 278 patients with POAG, 132 patients with primary angle closure glaucoma (PACG) and 135 patients with pseudoexfoliative glaucoma (PEXG) were genotyped for single nucleotide polymorphisms (SNPs) rs11720822 in PDIA5 and 471 POAG, 184 PACG and 218 PEXG patients were genotyped for rs2754511 in BIRC6. Genotyping was done by allelic discrimination PCR, and genotype and allele frequencies were calculated. Logistic regression analyses were performed using R software to determine the association of these SNPs with glaucoma. The allele and genotype frequencies of rs11720822 in PDIA5 were not associated with POAG, PACG or PEXG. The TT genotype of rs2754511 in BIRC6 was found to be protective for PEXG (p = 0.05, OR 0.42 [0.22-0.81]) in the Pakistani population, but not for POAG or PACG. This study did not confirm a previously reported association of risk alleles in PDIA5 and BIRC6 with POAG, but did demonstrate a protective role of the T allele of rs2754511 in the BIRC6 gene in PEXG. This supports a role for the unfolded protein response pathway and regulation of apoptotic cell death in the pathogenesis of PEXG.

Published
2014
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29. Impact of the common genetic associations of age-related macular degeneration upon systemic complement component C3d levels.

Author

Tina Ristau, Constantin Paun, Lebriz Ersoy, Moritz Hahn, Yara Lechanteur, Carel Hoyng, Eiko K de Jong, Mohamed R Daha, Bernd Kirchhof, Anneke I den Hollander, and Sascha Fauser

Subjects
Medicine, Science
Abstract

Age-related macular degeneration (AMD) is a common condition that leads to severe vision loss and dysregulation of the complement system is thought to be associated with the disease. To investigate associations of polymorphisms in AMD susceptibility genes with systemic complement activation, 2655 individuals were genotyped for 32 single nucleotide polymorphisms (SNPs) in or near 23 AMD associated risk genes. Component 3 (C3) and its catabolic fragment C3d were measured in serum and AMD staging was performed using multimodal imaging. The C3d/C3 ratio was calculated and associations with environmental factors, SNPs and various haplotypes of complement factor H (CFH) genes and complement factor B (CFB) genes were analyzed. Linear models were built to measure the influence of genetic variants on the C3d/C3 ratio. The study cohort included 1387 patients with AMD and 1268 controls. Higher C3d/C3 ratios were found for current smoker (p = 0.002), higher age (p = 1.56 × 10(-7)), AMD phenotype (p = 1.15 × 10(-11)) and the two SNPs in the C3 gene rs6795735 (p = 0.04) and rs2230199 (p = 0.04). Lower C3d/C3 ratios were found for diabetes (p = 2.87 × 10(-6)), higher body mass index (p = 1.00 × 10(-13)), the SNPs rs1410996 (p = 0.0001), rs800292 (p = 0.003), rs12144939 (p = 4.60 × 10(-6)) in CFH, rs4151667 (p = 1.01 × 10(-5)) in CFB and individual haplotypes in CFH and CFB. The linear model revealed a corrected R-square of 0.063 including age, smoking status, gender, and genetic polymorphisms explaining 6.3% of the C3d/C3 ratio. After adding the AMD status the corrected R-square was 0.067. In conclusion, none of the evaluated genetic polymorphisms showed an association with increased systemic complement activation apart from two SNPs in the C3 gene. Major genetic and non-genetic factors for AMD were not associated with systemic complement activation.

Published
2014
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31. Union makes strength: a worldwide collaborative genetic and clinical study to provide a comprehensive survey of RD3 mutations and delineate the associated phenotype.

Author

Isabelle Perrault, Alejandro Estrada-Cuzcano, Irma Lopez, Susanne Kohl, Shiqiang Li, Francesco Testa, Renate Zekveld-Vroon, Xia Wang, Esther Pomares, Jean Andorf, Nisrine Aboussair, Sandro Banfi, Nathalie Delphin, Anneke I den Hollander, Catherine Edelson, Ralph Florijn, Marc Jean-Pierre, Corinne Leowski, Andre Megarbane, Cristina Villanueva, Blanca Flores, Arnold Munnich, Huanan Ren, Ditta Zobor, Arthur Bergen, Rui Chen, Frans P M Cremers, Roser Gonzalez-Duarte, Robert K Koenekoop, Francesca Simonelli, Edwin Stone, Bernd Wissinger, Qingjiong Zhang, Josseline Kaplan, and Jean-Michel Rozet

Subjects
Medicine, Science
Abstract

Leber congenital amaurosis (LCA) is the earliest and most severe retinal degeneration (RD), and the most common cause of incurable blindness diagnosed in children. It is occasionally the presenting symptom of multisystemic ciliopathies which diagnosis will require a specific care of patients. Nineteen LCA genes are currently identified and three of them account for both non-syndromic and syndromic forms of the disease. RD3 (LCA12) was implicated as a LCA gene based on the identification of homozygous truncating mutations in two LCA families despite the screening of large cohorts of patients. Here we provide a comprehensive survey of RD3 mutations and of their clinical expression through the screening of a cohort of 852 patients originating worldwide affected with LCA or early-onset and severe RD. We identified three RD3 mutations in seven unrelated consanguineous LCA families - i.e., a 2 bp deletion and two nonsense mutations - predicted to cause complete loss of function. Five families originating from the Southern Shores of the Mediterranean segregated a similar mutation (c.112C>T, p.R38*) suggesting that this change may have resulted from an ancient founder effect. Considering the low frequency of RD3 carriers, the recurrence risk for LCA in non-consanguineous unions is negligible for both heterozygote and homozygote RD3 individuals. The LCA12 phenotype in our patients is highly similar to those of patients with mutant photoreceptor-specific guanylate cyclase (GUCY2D/LCA1). This observation is consistent with the report of the role of RD3 in trafficking of GUCYs and gives further support to a common mechanism of photoreceptor degeneration in LCA12 and LCA1, i.e., inability to increase cytoplasmic cGMP concentration in outer segments and thus to recover the dark-state. Similar to LCA1, LCA12 patients have no extraocular symptoms despite complete inactivation of both RD3 alleles, supporting the view that extraocular investigations in LCA infants with RD3 mutations should be avoided.

Published
2013
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32. Predicting Progression to Advanced Age-Related Macular Degeneration from Clinical, Genetic, and Lifestyle Factors Using Machine Learning

Author

Soufiane Ajana, Audrey Cougnard-Grégoire, Johanna M. Colijn, Bénédicte M.J. Merle, Timo Verzijden, Paulus T.V.M. de Jong, Albert Hofman, Johannes R. Vingerling, Boris P. Hejblum, Jean-François Korobelnik, Magda A. Meester-Smoor, Marius Ueffing, Hélène Jacqmin-Gadda, Caroline C.W. Klaver, Cécile Delcourt, Erkin I. Acar, Blanca Arango-Gonzalez, Angela Armento, Franz Badura, Vaibhav Bhatia, Shomi S. Bhattacharya, Marc Biarnés, Anna Borrell, Sofia M. Calado, Sascha Dammeier, Anita de Breuk, Berta De la Cerda, Anneke I. den Hollander, Francisco J. Diaz-Corrales, Sigrid Diether, Eszter Emri, Tanja Endermann, Lucia L. Ferraro, Míriam Garcia, Thomas J. Heesterbeek, Sabina Honisch, Carel B. Hoyng, Ellen Kilger, Elod Kortvely, Claire Lastrucci, Hanno Langen, Imre Lengyel, Phil Luthert, Jordi Monés, Everson Nogoceke, Tunde Peto, Frances M. Pool, Eduardo Rodriguez-Bocanegra, Luis Serrano, Jose Sousa, Eric Thee, Karl U. Ulrich Bartz-Schmidt, Markus Zumbansen, Bordeaux population health (BPH), Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM), Erasmus University Medical Center [Rotterdam] (Erasmus MC), University of Amsterdam [Amsterdam] (UvA), Statistics In System biology and Translational Medicine (SISTM), Inria Bordeaux - Sud-Ouest, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)- Bordeaux population health (BPH), Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM), Vaccine Research Institute (VRI), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Institut de Santé Publique, d'Epidémiologie et de Développement (ISPED), Université Bordeaux Segalen - Bordeaux 2, The EYE-RISK project was supported by the European Union’s Horizon 2020 Research and Innovation Programme (grant n°: 634479). The Rotterdam Study is funded by Erasmus Medical Center and Erasmus University, Rotterdam, The Netherlands, the Organization for the Health Research and Development (ZonMw), the Research Institute for Diseases in the Elderly (RIDE), the Ministry of Education, Culture and Science, the Ministry for Health, Welfare and Sports, the European Commission (DG XII), and the Municipality of Rotterdam, Rotterdam, The Netherlands. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Additionally, the ophthalmic research within the Rotterdam Study was supported by the following foundations: Oogfonds, Bartiméus Sonneheerdt Vereniging, LandelijkeStichting voor Blinden en Slechtzienden, Algemene Nederlandse Vereniging Ter Voorkoming Van Blindheid, Novartis Foundation, and MaculaFonds, which contributed through UitZicht (grant nos.: 2015-36 and 2016-19). The Antioxydants, Lipides Essentiels, Nutrition et Maladies Oculaires (ALIENOR) Study was funded by Laboratoires Théa, Fondation Voir et Entendre, Retina France, Agence Nationale de la Recherche (ANR-2010-PRSP-011 VISA), Programme Hospitalier de Recherche Clinique (PHRC) (ECLAIR project-2012), CFSR Recherche, the French Speaking Retina Specialists’ Club and Caisse Nationale pour la Solidarité et l’Autonomie. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Laboratoires Théa participated in the design of the Antioxydants, Lipides Essentiels, Nutrition et Maladies Oculaires (ALIENOR) Study, but none of the sponsors of this study participated in the collection, management, statistical analysis, or interpretation of the data, or in the preparation, review, or approval of the present manuscript., European Project: 634479,H2020,H2020-PHC-2014-two-stage,EYE-RISK(2015), Hejblum, Boris, Exploring the combined role of genetic and non-genetic factors for developing Age-Related Macular Degeneration: A systems level analysis of disease subgroups, risk factors, and pathways - EYE-RISK - - H20202015-05-01 - 2019-04-30 - 634479 - VALID, Ophthalmology, Epidemiology, Netherlands Institute for Neuroscience (NIN), and Vaccine Research Institute [Créteil, France] (VRI)

Subjects
Male, computer.software_genre, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], Machine Learning, Rotterdam Study, Macular Degeneration, 0302 clinical medicine, [STAT.AP] Statistics [stat]/Applications [stat.AP], Risk Factors, Cumulative incidence, ComputingMilieux_MISCELLANEOUS, 0303 health sciences, education.field_of_study, [STAT.AP]Statistics [stat]/Applications [stat.AP], Smoking, Middle Aged, 3. Good health, Phenotype, Area Under Curve, Disease Progression, Female, Cohort study, Genotype, Population, Clinical Decision-Making, Retinal Drusen, Machine learning, 03 medical and health sciences, medicine, Genetics, Humans, education, Life Style, Survival analysis, 030304 developmental biology, Aged, Nutrition, Receiver operating characteristic, business.industry, Age-related macular degeneration, Macular degeneration, Models, Theoretical, medicine.disease, Lifestyle, Personalized medicine, Confidence interval, eye diseases, Ophthalmology, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, 030221 ophthalmology & optometry, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, Artificial intelligence, business, Prediction, computer
Abstract

Contains fulltext : 245098.pdf (Publisher’s version ) (Closed access) PURPOSE: Current prediction models for advanced age-related macular degeneration (AMD) are based on a restrictive set of risk factors. The objective of this study was to develop a comprehensive prediction model applying a machine learning algorithm allowing selection of the most predictive risk factors automatically. DESIGN: Two population-based cohort studies. PARTICIPANTS: The Rotterdam Study I (RS-I; training set) included 3838 participants 55 years of age or older, with a median follow-up period of 10.8 years, and 108 incident cases of advanced AMD. The Antioxydants, Lipids Essentiels, Nutrition et Maladies Oculaires (ALIENOR) study (test set) included 362 participants 73 years of age or older, with a median follow-up period of 6.5 years, and 33 incident cases of advanced AMD. METHODS: The prediction model used the bootstrap least absolute shrinkage and selection operator (LASSO) method for survival analysis to select the best predictors of incident advanced AMD in the training set. Predictive performance of the model was assessed using the area under the receiver operating characteristic curve (AUC). MAIN OUTCOME MEASURES: Incident advanced AMD (atrophic, neovascular, or both), based on standardized interpretation of retinal photographs. RESULTS: The prediction model retained (1) age, (2) a combination of phenotypic predictors (based on the presence of intermediate drusen, hyperpigmentation in one or both eyes, and Age-Related Eye Disease Study simplified score), (3) a summary genetic risk score based on 49 single nucleotide polymorphisms, (4) smoking, (5) diet quality, (6) education, and (7) pulse pressure. The cross-validated AUC estimation in RS-I was 0.92 (95% confidence interval [CI], 0.88-0.97) at 5 years, 0.92 (95% CI, 0.90-0.95) at 10 years, and 0.91 (95% CI, 0.88-0.94) at 15 years. In ALIENOR, the AUC reached 0.92 at 5 years (95% CI, 0.87-0.98). In terms of calibration, the model tended to underestimate the cumulative incidence of advanced AMD for the high-risk groups, especially in ALIENOR. CONCLUSIONS: This prediction model reached high discrimination abilities, paving the way toward making precision medicine for AMD patients a reality in the near future.

Published
2020

33. Complement activation levels are related to disease stage in AMD

Author

Dzenita Smailhodzic, B. Jeroen Klevering, Tina Schick, Thomas J. Heesterbeek, Mohamed R. Daha, Yara T. E. Lechanteur, Sandra Liakopoulos, Lebriz Altay, Carel B. Hoyng, Laura Lorés-Motta, Eiko K. de Jong, and Anneke I. den Hollander

Subjects
0301 basic medicine, retina, genetic structures, Disease, Polymorphism, Single Nucleotide, Severity of Illness Index, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], Pathogenesis, 03 medical and health sciences, Macular Degeneration, 0302 clinical medicine, complement genes, Polymorphism (computer science), Databases, Genetic, Medicine, Humans, age-related macular degeneration, Triglycerides, Aged, complement activation, business.industry, Haplotype, Case-control study, Complement C3, 610 Medical sciences, Middle Aged, eye diseases, Complement system, Complement (complexity), 030104 developmental biology, Choroidal neovascularization, C-Reactive Protein, Haplotypes, ddc: 610, Complement C3d, Case-Control Studies, Immunology, 030221 ophthalmology & optometry, sense organs, medicine.symptom, business
Abstract

Background: To study the levels of complement activation in different disease stages of age-related macular degeneration (AMD) and the influence of genetic polymorphisms in complement genes. Methods: We included 797 AMD patients and 945 controls from the European Genetic Database. Patients were[for full text, please go to the a.m. URL], 7th International Symposium on AMD: Age-related Macular Degeneration - Understanding Pathogenetic Mechanisms of Disease

Published
2020

34. Increased circulating levels of Factor H-Related Protein 4 are strongly associated with age-related macular degeneration

Author

Fan He, Eiko K. de Jong, Laura Lorés-Motta, John R.W. Yates, Sascha Fauser, Anthony T. Moore, B. Paul Morgan, Nadhim Bayatti, Selina McHarg, Ilhan Erkin Acar, Simon J. Clark, Anneke I. den Hollander, Carel B. Hoyng, Paul N. Bishop, Valentina Cipriani, Dina Fathalla, Viranga Tilakaratna, Cipriani, Valentina [0000-0002-0839-9955], He, Fan [0000-0003-2651-6518], Fathalla, Dina [0000-0003-3845-529X], Acar, İlhan E [0000-0002-2078-9905], de Jong, Eiko K [0000-0001-6520-0407], den Hollander, Anneke I [0000-0003-0634-5408], Clark, Simon J [0000-0001-8394-8355], and Apollo - University of Cambridge Repository

Subjects
0301 basic medicine, Aging, genetic structures, General Physics and Astronomy, Muscle Proteins, Genome-wide association study, Neurodegenerative, Eye, Biochemistry, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], Macular Degeneration, 0302 clinical medicine, 2.1 Biological and endogenous factors, Macular Degeneration/blood, Aetiology, lcsh:Science, Complement Activation, Muscle Proteins/metabolism, Genetics, LIM Domain Proteins/metabolism, Retina/metabolism, Multidisciplinary, Capillaries/metabolism, Intracellular Signaling Peptides and Proteins, Single Nucleotide, LIM Domain Proteins, Apolipoproteins/blood, 3. Good health, Intracellular Signaling Peptides and Proteins/metabolism, Liver, Factor H, Complement Factor H, embryonic structures, Science, Immunology, Locus (genetics), Drusen, Biology, Complement Factor H/metabolism, Polymorphism, Single Nucleotide, General Biochemistry, Genetics and Molecular Biology, Article, Retina, 03 medical and health sciences, All institutes and research themes of the Radboud University Medical Center, Liver/physiology, medicine, Humans, Genetic Predisposition to Disease, Allele, Polymorphism, Eye Disease and Disorders of Vision, Eye diseases, Genetic association study, Aged, Haplotype, General Chemistry, Macular degeneration, medicine.disease, eye diseases, Complement system, Capillaries, 030104 developmental biology, Apolipoproteins, Haplotypes, Case-Control Studies, 030221 ophthalmology & optometry, lcsh:Q, sense organs, Biomarkers, Genome-Wide Association Study
Abstract

Age-related macular degeneration (AMD) is a leading cause of blindness. Genetic variants at the chromosome 1q31.3 encompassing the complement factor H (CFH, FH) and CFH related genes (CFHR1-5) are major determinants of AMD susceptibility, but their molecular consequences remain unclear. Here we demonstrate that FHR-4 plays a prominent role in AMD pathogenesis. We show that systemic FHR-4 levels are elevated in AMD (P-value = 7.1 × 10−6), whereas no difference is seen for FH. Furthermore, FHR-4 accumulates in the choriocapillaris, Bruch’s membrane and drusen, and can compete with FH/FHL-1 for C3b binding, preventing FI-mediated C3b cleavage. Critically, the protective allele of the strongest AMD-associated CFH locus variant rs10922109 has the highest association with reduced FHR-4 levels (P-value = 2.2 × 10−56), independently of the AMD-protective CFHR1–3 deletion, and even in those individuals that carry the high-risk allele of rs1061170 (Y402H). Our findings identify FHR-4 as a key molecular player contributing to complement dysregulation in AMD., A locus on chromosome 1 encompassing the CFHR genes is highly associated with AMD risk. Here, Cipriani and colleagues investigate the role of CFHR4, encoding FHR-4, and demonstrate a relationship between AMD risk, circulating FHR-4 levels and genetic variants at this locus.

Published
2020

35. Expression of wild-type Rp1 protein in Rp1 knock-in mice rescues the retinal degeneration phenotype.

Author

Qin Liu, Rob W J Collin, Frans P M Cremers, Anneke I den Hollander, L Ingeborgh van den Born, and Eric A Pierce

Subjects
Medicine, Science
Abstract

Mutations in the retinitis pigmentosa 1 (RP1) gene are a common cause of autosomal dominant retinitis pigmentosa (adRP), and have also been found to cause autosomal recessive RP (arRP) in a few families. The 33 dominant mutations and 6 recessive RP1 mutations identified to date are all nonsense or frameshift mutations, and almost exclusively (38 out of 39) are located in the 4(th) and final exon of RP1. To better understand the underlying disease mechanisms of and help develop therapeutic strategies for RP1 disease, we performed a series of human genetic and animal studies using gene targeted and transgenic mice. Here we report that a frameshift mutation in the 3(rd) exon of RP1 (c.686delC; p.P229QfsX35) found in a patient with recessive RP1 disease causes RP in the homozygous state, whereas the heterozygous carriers are unaffected, confirming that haploinsufficiency is not the causative mechanism for RP1 disease. We then generated Rp1 knock-in mice with a nonsense Q662X mutation in exon 4, as well as Rp1 transgenic mice carrying a wild-type BAC Rp1 transgene. The Rp1-Q662X allele produces a truncated Rp1 protein, and homozygous Rp1-Q662X mice experience a progressive photoreceptor degeneration characterized disorganization of photoreceptor outer segments. This phenotype could be prevented by expression of a normal amount of Rp1 protein from the BAC transgene without removal of the mutant Rp1-Q662X protein. Over-expression of Rp1 protein in additional BAC Rp1 transgenic lines resulted in retinal degeneration. These findings suggest that the truncated Rp1-Q662X protein does not exert a toxic gain-of-function effect. These results also imply that in principle gene augmentation therapy could be beneficial for both recessive and dominant RP1 patients, but the levels of RP1 protein delivered for therapy will have to be carefully controlled.

Published
2012
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36. Antisense Oligonucleotide (AON)-based Therapy for Leber Congenital Amaurosis Caused by a Frequent Mutation in CEP290

Author

Rob WJ Collin, Anneke I den Hollander, Saskia D van der Velde-Visser, Jeannette Bennicelli, Jean Bennett, and Frans PM Cremers

Subjects
antisense oligonucleotides, AON, CEP290, genetic therapy, LCA, Therapeutics. Pharmacology, RM1-950
Abstract

Leber congenital amaurosis (LCA) is the most severe form of inherited retinal degeneration, with an onset in the first year of life. The most frequent mutation that causes LCA, present in at least 10% of individuals with LCA from North-American and Northern-European descent, is an intronic mutation in CEP290 that results in the inclusion of an aberrant exon in the CEP290 mRNA. Here, we describe a genetic therapy approach that is based on antisense oligonucleotides (AONs), small RNA molecules that are able to redirect normal splicing of aberrantly processed pre-mRNA. Immortalized lymphoblastoid cells of individuals with LCA homozygously carrying the intronic CEP290 mutation were transfected with several AONs that target the aberrant exon that is incorporated in the mutant CEP290 mRNA. Subsequent RNA isolation and reverse transcription-PCR analysis revealed that a number of AONs were capable of almost fully redirecting normal CEP290 splicing, in a dose-dependent manner. Other AONs however, displayed no effect on CEP290 splicing at all, indicating that the rescue of aberrant CEP290 splicing shows a high degree of sequence specificity. Together, our data show that AON-based therapy is a promising therapeutic approach for CEP290-associated LCA that warrants future research in animal models to develop a cure for this blinding disease.

Published
2012
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37. A new perspective on lipid research in age-related macular degeneration

Author

Audrey Cougnard-Gregoire, Philip J. Luthert, Eduardo Rodrigez-Bocanegra, Marc Biarnés, Imre Lengyel, Eiko K. de Jong, Frances M. Pool, Elisabeth M. van Leeuwen, Benedicte Merle, Everson Nogoceke, Magda A. Meester-Smoor, Eszter Emri, Cécile Delcourt, Caroline C W Klaver, Marius Ueffing, Anneke I. den Hollander, Eveline Kersten, Johanna M. Colijn, Sascha Dammeier, Bordeaux population health (BPH), Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM), Epidemiology, and Ophthalmology

Subjects
0301 basic medicine, Lipoproteins metabolism, genetic structures, Disease, Bioinformatics, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], LEHA, 03 medical and health sciences, Macular Degeneration, 0302 clinical medicine, Age related, Fatty Acids, Omega-3, Medicine, Humans, Cholesterol homeostasis, business.industry, Lipid metabolism, Biological Transport, Macular degeneration, medicine.disease, Lipid Metabolism, Sensory Systems, eye diseases, 3. Good health, Diet, Ophthalmology, 030104 developmental biology, Cholesterol, 030221 ophthalmology & optometry, Treatment strategy, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, lipids (amino acids, peptides, and proteins), sense organs, business, Lipoproteins, HDL, Lipoprotein
Abstract

Contains fulltext : 200479.pdf (Publisher’s version ) (Open Access) There is an urgency to find new treatment strategies that could prevent or delay the onset or progression of AMD. Different classes of lipids and lipoproteins metabolism genes have been associated with AMD in a multiple ways, but despite the ever-increasing knowledge base, we still do not understand fully how circulating lipids or local lipid metabolism contribute to AMD. It is essential to clarify whether dietary lipids, systemic or local lipoprotein metabolismtrafficking of lipids in the retina should be targeted in the disease. In this article, we critically evaluate what has been reported in the literature and identify new directions needed to bring about a significant advance in our understanding of the role for lipids in AMD. This may help to develop potential new treatment strategies through targeting the lipid homeostasis.

Published
2018

38. Genetic association study of exfoliation syndrome identifies a protective rare variant at LOXL1 and five new susceptibility loci

Author

Daniele Cusi, Etsuo Chihara, Leyla Al-Jasim, Ya Xing Wang, Tero Kivelä, Jinghong Sang, Adeyinka O. Ashaye, Bowen Zhao, Tan Do, Susanne Moebus, Ursula Schlötzer-Schrehardt, Shamira A. Perera, Augustine W O Cheong, Afsaneh Naderi Beni, Francisco A. Escudero-Domínguez, Yoshiaki Kiuchi, Tomomi Higashide, DS Klobassa, Friedrich E. Kruse, Nicole Weisschuh, Chunyan Qiao, Muhammad Imran Khan, Martin L. Hibberd, Arthur J. Sit, Jamie E Craig, Akitoshi Yoshida, Periasamy Sundaresan, Humaira Ayub, Kathryn P. Burdon, Jonathan G Crowston, Kazunori Miyata, Marisa Cruz-Aguilar, Markus M. Nöthen, Hasnaa Lamari, Michael A. Hauser, Louis R. Pasquale, Anneke I. den Hollander, Eija Vesti, Ursula Hoja, Raphael Q Soh, Burcu Kasım, Adeola O Onakoya, Rachel W. Kuchtey, Eugeny L. Akopov, Liang Xu, Juan Carlos Zenteno, Chaiwat Teekhasaenee, Saleh A. Al-Obeidan, Eleftherios Anastasopoulos, Anita S Y Chan, Nagahisa Yoshimura, John Kuchtey, Naris Kitnarong, Yaan Fun Chong, Boonsong Wanichwecharugruang, R.R. Fayzrakhmanov, Paul Mitchell, N Kalpana, Unnur Thorsteinsdottir, Kei Tashiro, Rajesh Kumar, Jin Wook Jeoung, Deepak P. Edward, Frederico Martinon-Torres, Bilge Batu, Anavaj Sakuntabhai, Robert N. Weinreb, Héctor González-Iglesias, Sasan Moghimi, Jia Nee Foo, Nkechi J Uche, Karen Curtin, Kenji Inoue, Lingam Vijaya, Makoto Aihara, Dilek Aktas, Norimoto Gotoh, Wasu Supakontanasan, Laura Dallorto, Takako Sugimoto, Jonathan L. Haines, Olusola Olawoye, Janey L. Wiggs, Sripriya Sarangapani, Craig J. Chaya, Theofanis Pappas, Fotis Topouzis, Eranga N. Vithana, Steffen Heegaard, Fridbert Jonasson, Kazuhiko Mori, Idakwo Ugbede, Hongyan Jia, Anthi Chatzikyriakidou, Robert P. Igo, Soon Cheol Cha, Yueming Chen, Su-Ling Ho, Zhenglin Yang, Jost B. Jonas, Francesca Pasutto, Ken Hayashi, Rahat Husain, Georg Mossböck, S Fabian Lerner, R. Rand Allingham, Priti Sahay, Fumihiko Matsuda, Yanin Suwan, Teresa Rolle, Robert Ritch, Peter Kraft, Trevor R. Carmichael, Kar Seng Sim, Raheel Qamar, Gordana Sunaric Megevand, Tomasz Zarnowski, Shazia Micheal, Scott Thomas, Paolo Frezzotti, Vera Vysochinskaya, Linda M. Zangwill, Alina Popa Cherecheanu, Tin Aung, Jessica N. Cooke Bailey, Kyu Hyung Park, Edward Dervan, Suhanya Okeke, Pablo Fornero, Sidi M Ezzouhairi, Pascal Reynier, Gudmar Thorleifsson, Michael V. Dubina, Kazuhisa Sugiyama, Sylvain Roy, Per Kappelgaard, Mineo Ozaki, Vijayan Saravanan, Carlo Lavia, Wenda L. Greer, Takanori Mizoguchi, Alireza Lashay, A. Binder, Daniel Berner, Su Qin Peh, Balram Chowbay, Nino Kobakhidze, Ifeoma N. Asimadu, Delia Sivori, Gopalakrishnan Prakadeeswari, Alexandros Lambropoulos, Michael Coote, Sergei Y. Astakhov, Shahin Yazdani, Dan Milea, Montserrat García, Lydia Álvarez, Kenji Yamashiro, Soumya Raychaudhuri, Pratap Challa, Aparna Rao, Jae H. Kang, Khai Koon Heng, Richard K. Lee, Tien Yin Wong, Alex W. Hewitt, Yoko Ikeda, Kessara Pathanapitoon, Panayiota Founti, Daniella Bach-Holm, Emmanuelle Souzeau, Margaret A. Pericak-Vance, Michèle Ramsay, Nkiru Kizor-Akaraiwe, Yosai Mori, Antonio Maria Fea, Chandrashekaran Shivkumar, Xiao Yu Ng, Jie Jin Wang, Erika Salvi, Giang T T Nguyn, Steffen Uebe, Tamara Zompa, Anne L. Coleman, Werner Zenz, Min Sagong, Luis Fernández-Vega Cueto, Farah Akhtar, Susan Williams, Sarah C. Nelson, Bradford J. Shingleton, Ryuichi Ideta, Leon W. Herndon, Zheng Li, Murat Irkec, M. Roy Wilson, Ewa Kosior-Jarecka, Christian Y. Mardin, Mozhgan Rezaei Kanavi, Tsutomu Ohashi, Abderrahman Rafei, Rengaraj Venkatesh, Stefan Herms, George Chichua, Mohammad Pakravan, Robyn M. Rautenbach, Shi Qi Mok, Trình V Nguyn, Patricio G. Schlottmann, Nassim Khatibi, Daniel Gaston, Masaru Inatani, Morio Ueno, Mukharram M. Bikbov, Eoin Silke, Homa Naderifar, Linda Hansapinyo, Paolo Manunta, Z. Xie, Urszula Lukasik, Eray Atalay, Lulin Huang, Xuyang Liu, Chie Sotozono, Shuang Ru Goh, John H. Fingert, Richard A. Mills, Khaled K. Abu-Amero, Xiao Yin Chen, Matthias Zenkel, Sergo Tabagari, Irma Järvelä, Xueyi Chen, Stéphanie Leruez, Yury S. Astakhov, Sonia Davila, Yildirim Nilgün, Ronnie George, Shin-ichi Manabe, Miguel Coca-Prados, Masahiro Miyake, Ignacio Lischinsky, Rogelio González-Sarmiento, Arkasubhra Ghosh, A. Emelyanov, Çilingir Oguz, Masakazu Nakano, Rohit Shetty, Karen Bedard, Toshiya Sakurai, Yutao Liu, Barbara M Wirostko, Hui Zhang, Ulrich-Christoph Welge-Luessen, Toshiaki Kubota, Vania Castro, Hip X Nguyn, Liyun Jia, Ari Ziskind, Hideki Chuman, Andrew C. Orr, Satoko Nakano, Daniela Paoli, Masahide Yanagi, Aravind Haripriya, Kari Stefansson, Pedro Pablo Rodríguez-Calvo, Hui Meng Soo, Chiea Chuen Khor, Gyulli M. Kazakbaeva, Osvaldo Cuello, Mei Chin Lee, Ki Ho Park, Natalia Porporato, Lourdes de Juan Marcos, Ching-Yu Cheng, Shigeyasu Kazama, Shigeru Kinoshita, Axel M. Hillmer, Alan S. Crandall, Victor H. K. Yong, Ohoud Owaidhah, Rodolfo Perez Grossmann, Jeeyun Ahn, André Reis, Nevbahar Tamçelik, Satoshi Ishiko, Antonio Salas, Ningli Wang, Singapore Eye Research Institute [Singapore] (SERI), Ozaki Eye Hospital [Miyazaki], Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), deCODE genetics [Reykjavik], Mizoguchi Eye Hospital [Sasebo], Case Western Reserve University [Cleveland], Aravind Eye Hospital [Madurai, India], University of the Witwatersrand [Johannesburg] (WITS), Pavlov First Saint Petersburg State Medical University [St. Petersburg], Dalhousie University [Halifax], Flinders University [Adelaide, Australia], Kyoto Prefectural University of Medicine [Kyoto, Japon], King Saud University [Riyadh] (KSU), Genome Institute of Singapore (GIS), Aravind Medical Research Foundation (AMRF), Université de Médecine Carol Davila, Harvard Medical School [Boston] (HMS), University of Washington [Seattle], Hayashi Eye Hospital [Fukuoka], Shinjo Eye Clinic [Nagoya], Medical University of Lublin, Inoue Eye Hospital [Tokyo], Hacettepe University = Hacettepe Üniversitesi, Universidad de Oviedo [Oviedo], Kanazawa University (KU), Department of Medical and Clinical Genetics [Helsinki], Haartman Institute [Helsinki], Faculty of Medecine [Helsinki], Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Faculty of Medecine [Helsinki], Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Helsingin yliopisto = Helsingfors universitet = University of Helsinki, Organizacion Medica de Investigacion (OMI BUENOS AIRES), Fundacion para el Estudio del Glaucoma [Buenos Aires], Chercheur indépendant, Eskisehir Osmangazi University, Ufa Eye Research Institute [Bashkortostan], Seoul National University Hospital, Yeungnam University [South Korea], Kyoto University, Universidad Nacional Autónoma de México = National Autonomous University of Mexico (UNAM), Universität Heidelberg [Heidelberg] = Heidelberg University, Birla Institute of Scientific Research (BISR), B. M. Birla Science and Technology Center, Faculty of Computer Science, Department of Pathology and Immunology, Geneva University Hospital (HUG), Key Laboratory for Information System Security, ministry of education, Numerical modeling and high performance computing for evolution problems in complex domains and heterogeneous media (NACHOS), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Jean Alexandre Dieudonné (LJAD), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Institute of Human Genetics [Erlangen, Allemagne], Department of Ophthalmology, School of Medicine [Thessaloniki, Grèce], Aristotle University of Thessaloniki, Università degli Studi di Siena = University of Siena (UNISI), Department of Medicine, Surgery, and Dentistry, University of Milano, Japan Advanced Institute of Science and Technology (JAIST), Etudes génomiques trans-ethniques des maladies multifactorielles, Kyoto University-Institut National de la Santé et de la Recherche Médicale (INSERM), Fondation Ophtalmologique Adolphe de Rothschild [Paris], Archaeogenetics Laboratory, Génétique fonctionnelle des Maladies infectieuses - Functional Genetics of Infectious Diseases, Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS), Rheinische Friedrich-Wilhelms-Universität Bonn, University of Kentucky (UK), Helsinki University Eye Hospital, Turku University Hospital, Turku, Finland, COMSATS Institute of Information Technology (CIIT), Department of Epidemiology, Harvard School of Public Health, University of Miami Leonard M. Miller School of Medicine (UMMSM), Brigham and Women's Hospital [Boston], Department of Neuroscience and Pharmacology, Section of Eye Pathology, University of Copenhagen, University of Copenhagen = Københavns Universitet (UCPH), Helsingin yliopisto = Helsingfors universitet = University of Helsinki, University of California [San Diego] (UC San Diego), University of California (UC), University of Iceland [Reykjavik], New York Eye and Ear Infirmary of Mount Sinai [New York] (NYEE), Oita University Faculty of Medicine [Oita, Japon], Radboud University Medical Center [Nijmegen], Oogheelkunde, RS: FHML non-thematic output, Kyoto University [Kyoto], Universidad Nacional Autónoma de México (UNAM), Universität Heidelberg [Heidelberg], Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Jean Alexandre Dieudonné (JAD), Dipartimento di Scienze oftalmologiche e Neurochirurgiche, Universita' degli Studi di Siena, Siena, Kyoto University [Kyoto]-Institut National de la Santé et de la Recherche Médicale (INSERM), Rothschild Hospital, Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS), University of Kentucky, University of Copenhagen = Københavns Universitet (KU), University of California, Aung, Tin, Ozaki, Mineo, Lee, Mei Chin, Schlötzer Schrehardt, Ursula, Thorleifsson, Gudmar, Mizoguchi, Takanori, Igo, Robert P, Haripriya, Aravind, Williams, Susan E, Astakhov, Yury S, Orr, Andrew C, Burdon, Kathryn P, Nakano, Satoko, Mori, Kazuhiko, Abu Amero, Khaled, Hauser, Michael, Li, Zheng, Prakadeeswari, Gopalakrishnan, Bailey, Jessica N. Cooke, Cherecheanu, Alina Popa, Kang, Jae H, Nelson, Sarah, Hayashi, Ken, Manabe, Shin Ichi, Kazama, Shigeyasu, Zarnowski, Tomasz, Inoue, Kenji, Irkec, Murat, Coca Prados, Miguel, Sugiyama, Kazuhisa, Järvelä, Irma, Schlottmann, Patricio, Lerner, S. Fabian, Lamari, Hasnaa, Nilgün, Yildirim, Bikbov, Mukharram, Park, Ki Ho, Cha, Soon Cheol, Yamashiro, Kenji, Zenteno, Juan C, Jonas, Jost B, Kumar, Rajesh S, Perera, Shamira A, Chan, Anita S. Y, Kobakhidze, Nino, George, Ronnie, Vijaya, Lingam, Do, Tan, Edward, Deepak P, de Juan Marcos, Lourde, Pakravan, Mohammad, Moghimi, Sasan, Ideta, Ryuichi, Bach Holm, Daniella, Kappelgaard, Per, Wirostko, Barbara, Thomas, Samuel, Gaston, Daniel, Bedard, Karen, Greer, Wenda L, Yang, Zhenglin, Chen, Xueyi, Huang, Lulin, Sang, Jinghong, Jia, Hongyan, Jia, Liyun, Qiao, Chunyan, Zhang, Hui, Liu, Xuyang, Zhao, Bowen, Wang, Ya Xing, Xu, Liang, Leruez, Stéphanie, Reynier, Pascal, Chichua, George, Tabagari, Sergo, Uebe, Steffen, Zenkel, Matthia, Berner, Daniel, Mossböck, Georg, Weisschuh, Nicole, Hoja, Ursula, Welge Luessen, Ulrich Christoph, Mardin, Christian, Founti, Panayiota, Chatzikyriakidou, Anthi, Pappas, Theofani, Anastasopoulos, Eleftherio, Lambropoulos, Alexandro, Ghosh, Arkasubhra, Shetty, Rohit, Porporato, Natalia, Saravanan, Vijayan, Venkatesh, Rengaraj, Shivkumar, Chandrashekaran, Kalpana, Narendran, Sarangapani, Sripriya, Kanavi, Mozhgan R, Beni, Afsaneh Naderi, Yazdani, Shahin, Lashay, Alireza, Naderifar, Homa, Khatibi, Nassim, Fea, Antonio, Lavia, Carlo, Dallorto, Laura, Rolle, Teresa, Frezzotti, Paolo, Paoli, Daniela, Salvi, Erika, Manunta, Paolo, Mori, Yosai, Miyata, Kazunori, Higashide, Tomomi, Chihara, Etsuo, Ishiko, Satoshi, Yoshida, Akitoshi, Yanagi, Masahide, Kiuchi, Yoshiaki, Ohashi, Tsutomu, Sakurai, Toshiya, Sugimoto, Takako, Chuman, Hideki, Aihara, Makoto, Inatani, Masaru, Miyake, Masahiro, Gotoh, Norimoto, Matsuda, Fumihiko, Yoshimura, Nagahisa, Ikeda, Yoko, Ueno, Morio, Sotozono, Chie, Jeoung, Jin Wook, Sagong, Min, Park, Kyu Hyung, Ahn, Jeeyun, Cruz Aguilar, Marisa, Ezzouhairi, Sidi M, Rafei, Abderrahman, Chong, Yaan Fun, Ng, Xiao Yu, Goh, Shuang Ru, Chen, Yueming, Yong, Victor H. K, Khan, Muhammad Imran, Olawoye, Olusola O, Ashaye, Adeyinka O, Ugbede, Idakwo, Onakoya, Adeola, Kizor Akaraiwe, Nkiru, Teekhasaenee, Chaiwat, Suwan, Yanin, Supakontanasan, Wasu, Okeke, Suhanya, Uche, Nkechi J, Asimadu, Ifeoma, Ayub, Humaira, Akhtar, Farah, Kosior Jarecka, Ewa, Lukasik, Urszula, Lischinsky, Ignacio, Castro, Vania, Grossmann, Rodolfo Perez, Megevand, Gordana Sunaric, Roy, Sylvain, Dervan, Edward, Silke, Eoin, Rao, Aparna, Sahay, Priti, Fornero, Pablo, Cuello, Osvaldo, Sivori, Delia, Zompa, Tamara, Mills, Richard A, Souzeau, Emmanuelle, Mitchell, Paul, Wang, Jie Jin, Hewitt, Alex W, Coote, Michael, Crowston, Jonathan G, Astakhov, Sergei Y, Akopov, Eugeny L, Emelyanov, Anton, Vysochinskaya, Vera, Kazakbaeva, Gyulli, Fayzrakhmanov, Rinat, Al Obeidan, Saleh A, Owaidhah, Ohoud, Aljasim, Leyla Ali, Chowbay, Balram, Foo, Jia Nee, Soh, Raphael Q, Sim, Kar Seng, Xie, Zhicheng, Cheong, Augustine W. O, Mok, Shi Qi, Soo, Hui Meng, Chen, Xiao Yin, Peh, Su Qin, Heng, Khai Koon, Husain, Rahat, Ho, Su Ling, Hillmer, Axel M, Cheng, Ching Yu, Escudero Domínguez, Francisco A, González Sarmiento, Rogelio, Martinon Torres, Frederico, Salas, Antonio, Pathanapitoon, Kessara, Hansapinyo, Linda, Wanichwecharugruang, Boonsong, Kitnarong, Nari, Sakuntabhai, Anavaj, Nguyn, Hip X, Nguyn, Giang T. T, Nguyn, Trình V, Zenz, Werner, Binder, Alexander, Klobassa, Daniela S, Hibberd, Martin L, Davila, Sonia, Herms, Stefan, Nöthen, Markus M, Moebus, Susanne, Rautenbach, Robyn M, Ziskind, Ari, Carmichael, Trevor R, Ramsay, Michele, Álvarez, Lydia, García, Montserrat, González Iglesias, Héctor, Rodríguez Calvo, Pedro P, Cueto, Luis Fernández Vega, Oguz, Çilingir, Tamcelik, Nevbahar, Atalay, Eray, Batu, Bilge, Aktas, Dilek, Kasım, Burcu, Wilson, M. Roy, Coleman, Anne L, Liu, Yutao, Challa, Pratap, Herndon, Leon, Kuchtey, Rachel W, Kuchtey, John, Curtin, Karen, Chaya, Craig J, Crandall, Alan, Zangwill, Linda M, Wong, Tien Yin, Nakano, Masakazu, Kinoshita, Shigeru, den Hollander, Anneke I, Vesti, Eija, Fingert, John H, Lee, Richard K, Sit, Arthur J, Shingleton, Bradford J, Wang, Ningli, Cusi, Daniele, Qamar, Raheel, Kraft, Peter, Pericak Vance, Margaret A, Raychaudhuri, Soumya, Heegaard, Steffen, Kivelä, Tero, Reis, André, Kruse, Friedrich E, Weinreb, Robert N, Pasquale, Louis R, Haines, Jonathan L, Thorsteinsdottir, Unnur, Jonasson, Fridbert, Allingham, R. Rand, Milea, Dan, Ritch, Robert, Kubota, Toshiaki, Tashiro, Kei, Vithana, Eranga N, Micheal, Shazia, Topouzis, Foti, Craig, Jamie E, Dubina, Michael, Sundaresan, Periasamy, Stefansson, Kari, Wiggs, Janey L, Pasutto, Francesca, Khor, Chiea Chuen, University of Helsinki-University of Helsinki-Faculty of Medecine [Helsinki], University of Helsinki-University of Helsinki, Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut Pasteur [Paris], and University of Helsinki

Subjects
0301 basic medicine, Male, Calcium Channels/genetics, Messenger, Medizin, PSEUDOEXFOLIATION SYNDROME, Genome-wide association study, BLOOD-PRESSURE, Disease, Exfoliation Syndrome, Eye, Exfoliation Syndrome/ethnology/genetics, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], 0302 clinical medicine, PARKINSONS-DISEASE, 80 and over, ta319, Missense mutation, Genetics, Aged, 80 and over, Amino Acid Oxidoreductases/genetics/physiology, Alleles, Amino Acid Oxidoreductases, Amino Acid Substitution, Asian Continental Ancestry Group, Calcium Channels, Cell Adhesion, Extracellular Matrix, Female, Gene Expression Profiling, Genetic Predisposition to Disease, Haplotypes, Humans, Molecular Chaperones, RNA, Messenger, Spheroids, Cellular, Genome-Wide Association Study, Mutation, Missense, Point Mutation, Metaanalysis, [SDV.BIBS]Life Sciences [q-bio]/Quantitative Methods [q-bio.QM], 3. Good health, ALZHEIMERS-DISEASE, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Molecular Chaperones/biosynthesis/genetics, Biology, SYNONYMOUS MUTATIONS, ta3111, Article, 03 medical and health sciences, Asian People, Asian Continental Ancestry Group/genetics, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, Allele, Risk factor, GENOME-WIDE ASSOCIATION, Eye/metabolism, Aged, Genetic association, [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE], Haplotype, Individuals, Glaucoma, Odds ratio, Extracellular Matrix/metabolism, RNA, Messenger/biosynthesis, MACULAR DEGENERATION, RISK LOCI, eye diseases, COMMON SEQUENCE VARIANTS, 030104 developmental biology, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Mutation, 030221 ophthalmology & optometry, RNA, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, Cellular, Spheroids, Missense, [INFO.INFO-BI]Computer Science [cs]/Bioinformatics [q-bio.QM], Polymorphisms, purl.org/pe-repo/ocde/ford#1.06.07 [https], INFLAMMATORY-BOWEL-DISEASE
Abstract

International audience; Exfoliation syndrome (XFS) is the commonest known risk factor for secondary glaucoma and a significant cause of blindness worldwide. Variants in two genes, LOXL1 and CACNA1A have been previously associated with XFS. To further elucidate the genetic basis of XFS, we collected a global sample of XFS cases to refine the association at LOXL1, which previously showed inconsistent results between populations,and to identify new variants associated with XFS. We identified a rare, protective allele at LOXL1 (p.407Phe, OR= 25, P=2.9 x 10-14) through deep resequencing of XFS cases and controls from 9 countries. This variant results in increased cellular adhesion strength compared to the wild-type (p.407Tyr) allele. A genome-wide association study (GWAS) of XFS cases and controls from 24 countries followed by replication in 18 countries identified seven genome-wide significant loci (P < 5 x 10-8). Index variants at the new loci map to chromosomes 13q12 (POMP), 11q23.3 (TMEM136), 6p21 (AGPAT1), 3p24 (RBMS3) and 5q23 (near SEMA6A). These findings provide biological insights into the pathology of XFS, and highlight a potential role for naturally occurring rare LOXL1 variants in disease biology.

Published
2017

39. Genetic risk score has added value over initial clinical grading stage in predicting disease progression in age-related macular degeneration

Author

Joannes M. M. Groenewoud, Thomas J. Heesterbeek, Clara I. Sánchez, Carel B. Hoyng, Bart Liefers, Eiko K. de Jong, Tunde Peto, Ilhan Erkin Acar, Anneke I. den Hollander, Daniel Pauleikhoff, and Hans W. Hense

Subjects
Male, 0301 basic medicine, Oncology, medicine.medical_specialty, Genetic testing, genetic structures, Epidemiology, Stress-related disorders Donders Center for Medical Neuroscience [Radboudumc 13], lcsh:Medicine, Drusen, Predictive markers, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], Article, 03 medical and health sciences, All institutes and research themes of the Radboud University Medical Center, 0302 clinical medicine, Geographic Atrophy, Internal medicine, Added value, medicine, Humans, Genetic Predisposition to Disease, Prospective Studies, Genetic risk, Prospective cohort study, lcsh:Science, Grading (tumors), Aged, Multidisciplinary, business.industry, Macular degeneration, Disease progression, lcsh:R, fungi, medicine.disease, Choroidal Neovascularization, eye diseases, Clinical trial, 030104 developmental biology, Disease Progression, Female, lcsh:Q, Medical imaging, sense organs, business, 030217 neurology & neurosurgery
Abstract

Several prediction models for progression of age-related macular degeneration (AMD) have been developed, but the added value of using genetic information in those models in addition to clinical characteristics is ambiguous. In this prospective cohort study, we explored the added value of genetics using a genetic risk score (GRS) based on 52 AMD-associated variants, in addition to the clinical severity grading at baseline as quantified by validated drusen detection software, to predict disease progression in 177 AMD patients after 6.5 years follow-up. The GRS was strongly associated with the drusen coverage at baseline (P 2 increased from 0.46 to 0.56. This improvement by the GRS was predominantly seen in patients with a drusen coverage

Published
2019

40. Exome sequencing in patients with chronic central serous chorioretinopathy

Author

Eiko K. de Jong, Christian Gilissen, Anneke I. den Hollander, Myrte B. Breukink, Carel B. Hoyng, Camiel J. F. Boon, Rosa L. Schellevis, Ophthalmology, and ANS - Complex Trait Genetics

Subjects
0301 basic medicine, Oncology, Male, Candidate gene, lcsh:Medicine, Genome-wide association study, Disease, Genome informatics, Mannosyltransferases, Genome-wide association studies, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], 0302 clinical medicine, Polymorphism (computer science), Genotype, Exome, Fluorescein Angiography, lcsh:Science, Exome sequencing, Multidisciplinary, Medical genetics, Metabolic Disorders Radboud Institute for Molecular Life Sciences [Radboudumc 6], Dual Oxidases, Retinal diseases, Central Serous Chorioretinopathy, Cohort, Female, Medical genomics, Tomography, Optical Coherence, medicine.medical_specialty, Oxidoreductases Acting on CH-CH Group Donors, Polymorphism, Single Nucleotide, Retina, Article, 03 medical and health sciences, All institutes and research themes of the Radboud University Medical Center, Internal medicine, Exome Sequencing, medicine, Humans, Genetic Predisposition to Disease, business.industry, lcsh:R, Proteins, 030104 developmental biology, lcsh:Q, business, Cell Adhesion Molecules, 030217 neurology & neurosurgery, Genome-Wide Association Study
Abstract

Chronic central serous chorioretinopathy (cCSC) is a multifactorial eye disease characterized by subretinal fluid accumulation that leads to vision loss. Clinically, cCSC is associated with stress, hypercortisolism and corticosteroid use, and is more frequent in males (80%) than in females (20%). Current genetic studies on cCSC have thus far focussed on common variants, but familial occurrence of cCSC also suggests a role for rare variants in the disease susceptibility. Therefore, in this study, we performed exome sequencing of cCSC patients to elucidate the role of rare (protein-altering) variants in the disease. Exome sequencing was performed on 269 cCSC patients and 1,586 controls. Data were processed according to the Genome-Analysis-Toolkit (GATK) best practices. Principal component analysis was performed to check for genetic ancestry and only unrelated subjects of European descent were retained. Burden, SKAT and SKAT-O tests were performed using 2 different grouping criteria. One group included protein-altering variants only, while the other contained synonymous and splice site variants as well. The gene-based analyses were performed using the SKAT R-package correcting for two principal components using two approaches; (1) on the entire cohort correcting for sex and (2) on males and females separately. Additionally, the gene-based associations of genes at previously reported cCSC loci were investigated. After filtering, the dataset contained 263 cCSC patients (208 males [79%]) and 1352 controls (671 males [50%]) carrying 197,915 protein-altering variants in 16,370 genes and 330,689 exonic variants in 18,173 genes. Analysis stratified by sex identified significant associations with the PIGZ (PSKAT = 9.19 × 10−7 & PSKAT-O = 2.48 × 10−6), DUOX1 (PSKAT = 1.03 × 10−6), RSAD1 (PSKAT = 1.92 × 10−7 & PSKAT-O = 8.57 × 10−8) and LAMB3 (PBurden = 1.40 × 10−6 & PSKAT-O = 1.14 × 10−6) genes in female cCSC patients, after correction for multiple testing. The number of rare variant carriers in these genes was significantly higher in the female cCSC cohort compared to female controls (45,5% vs. 18.5%, P = 1.92 × 10−6, OR = 3.67 [95% CI = 2.09–6.46]). No significant associations were identified in the entire cohort nor in the male patients. In this exome study on cCSC patients, we have identified PIGZ, DUOX1, RSAD1 and LAMB3 as potential new candidate genes for cCSC in females. The sex-specific associations identified here suggest a possible interaction between rare genetic factors and sex for cCSC, but replication of these findings in additional cohorts of cCSC patients is necessary.

Published
2019

41. Impaired ABCA1/ABCG1-mediated lipid efflux in the mouse retinal pigment epithelium (RPE) leads to retinal degeneration

Author

Jürgen Fingerle, Vyara Todorova, Maya Barben, Duygu Karademir, Sanford L. Boye, Isabelle Meneau, Christoph Ullmer, Katrin Klee, Anneke I. den Hollander, Cyrille Maugeais, Frank Blaser, Marijana Samardzija, Arnold von Eckardstein, Thorsten Hornemann, Saskia D. van der Velde-Visser, Joshua L. Dunaief, Regula Steiner, Valda Pauzuolyte, Lucia Rohrer, Christian Grimm, Alaa Othman, Federica Storti, University of Zurich, and Grimm, Christian

Subjects
0301 basic medicine, Retinal degeneration, Mouse, genetic structures, retinal pigment epithelium, ABCA1, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], chemistry.chemical_compound, Mice, 0302 clinical medicine, 2400 General Immunology and Microbiology, 540 Chemistry, Biology (General), ATP Binding Cassette Transporter, Subfamily G, Member 1, 10038 Institute of Clinical Chemistry, biology, General Neuroscience, Retinal Degeneration, 2800 General Neuroscience, General Medicine, lipid efflux, Cell biology, medicine.anatomical_structure, ABCG1, Medicine, lipids (amino acids, peptides, and proteins), Research Article, Human, ATP Binding Cassette Transporter 1, 10018 Ophthalmology Clinic, QH301-705.5, Science, 610 Medicine & health, General Biochemistry, Genetics and Molecular Biology, Cell Line, 03 medical and health sciences, 1300 General Biochemistry, Genetics and Molecular Biology, medicine, Animals, Humans, Photoreceptor Cells, Human Biology and Medicine, age-related macular degeneration, Inflammation, Retina, Retinal pigment epithelium, General Immunology and Microbiology, Retinal, Lipid metabolism, Macular degeneration, medicine.disease, Lipid Metabolism, eye diseases, Disease Models, Animal, 030104 developmental biology, chemistry, 030221 ophthalmology & optometry, biology.protein, sense organs, Neuroscience
Abstract

Contains fulltext : 203169.pdf (Publisher’s version ) (Open Access) Age-related macular degeneration (AMD) is a progressive disease of the retinal pigment epithelium (RPE) and the retina leading to loss of central vision. Polymorphisms in genes involved in lipid metabolism, including the ATP-binding cassette transporter A1 (ABCA1), have been associated with AMD risk. However, the significance of retinal lipid handling for AMD pathogenesis remains elusive. Here, we study the contribution of lipid efflux in the RPE by generating a mouse model lacking ABCA1 and its partner ABCG1 specifically in this layer. Mutant mice show lipid accumulation in the RPE, reduced RPE and retinal function, retinal inflammation and RPE/photoreceptor degeneration. Data from human cell lines indicate that the ABCA1 AMD risk-conferring allele decreases ABCA1 expression, identifying the potential molecular cause that underlies the genetic risk for AMD. Our results highlight the essential homeostatic role for lipid efflux in the RPE and suggest a pathogenic contribution of reduced ABCA1 function to AMD.

Published
2019

42. FAMILIAL CENTRAL SEROUS CHORIORETINOPATHY

Author

Eiko K. de Jong, Jan E.E. Keunen, Anneke I. den Hollander, Danial Mohabati, Greet Dijkman, Camiel J. F. Boon, Rosa L. Schellevis, Suzanne Yzer, Carel B. Hoyng, Elon H. C. van Dijk, Myrte B. Breukink, Ophthalmology, and ANS - Complex Trait Genetics

Subjects
Male, 0301 basic medicine, medicine.medical_specialty, Visual acuity, phenotyping, Fundus Oculi, Visual Acuity, Retina, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], 03 medical and health sciences, 0302 clinical medicine, disease progression, Optical coherence tomography, Ophthalmology, medicine, Humans, In patient, genetics, Prospective Studies, Fluorescein Angiography, Prospective cohort study, central serous chorioretinopathy, Netherlands, Color fundus photography, medicine.diagnostic_test, Choroid, business.industry, Incidence, familial, General Medicine, Fluorescein angiography, medicine.disease, Pedigree, Ophthalmoscopy, Serous fluid, Phenotype, 030104 developmental biology, 030221 ophthalmology & optometry, Female, medicine.symptom, business, Tomography, Optical Coherence, Progressive disease, Follow-Up Studies
Abstract

Item does not contain fulltext PURPOSE: To assess ophthalmologic characteristics in patients and unaffected individuals in families with multiple members affected by central serous chorioretinopathy (CSC), both at presentation and long-term follow-up. METHODS: In 103 subjects from 23 families with at least 2 affected patients with CSC per family, prospective extensive ophthalmologic examination was performed, including best-corrected visual acuity, indirect ophthalmoscopy, digital color fundus photography, optical coherence tomography, fundus autofluorescence, and fluorescein angiography imaging. From these, 24 individuals from 6 families had undergone extensive ophthalmologic examination in either 1994 or 1995 and were followed up in this study. RESULTS: Subretinal fluid accumulation on optical coherence tomography and/or "hot spots" of leakage on fluorescein angiography indicative of CSC were detected in 45 of 103 phenotyped subjects (44%). Findings suggestive of CSC, but without the presence of subretinal fluid on optical coherence tomography and/or "hot spots" of leakage on fluorescein angiography, were observed in an additional 27 family members (26%). In 4 of 17 previously nonaffected subjects (24%) from the 24 individuals that were followed up after more than 20 years, we found more severe abnormalities. CONCLUSION: Extensive ophthalmologic phenotyping resulted in the detection of (suggestive) CSC in 52% of family members of patients with CSC. Genetic factors may play an important role in these specific CSC cases. Moreover, during follow-up, progressive disease can occur in a noteworthy number of patients.

Published
2019

43. Genome-wide association analyses identify two susceptibility loci for pachychoroid disease central serous chorioretinopathy

Author

Shigeru Honda, Takehiro Sato, Sotaro Ooto, Eiko K. de Jong, Hideo Nakanishi, Tien Yin Wong, Chieko Shiragami, Tomohiro Iida, Yuki Muraoka, Yoichi Sakurada, Ryo Yamada, Kenji Yamashiro, Carel B. Hoyng, Nobuhisa Mizuki, Camiel J. F. Boon, Naoko Ueda-Arakawa, Akio Oishi, Fumihiko Matsuda, Masahiro Miyake, Hiroshi Tamura, Manabu Miyata, Akira Meguro, Akitaka Tsujikawa, Chiea Chuen Khor, Yoshikatsu Hosoda, Atsushi Tajima, Ayako Takahashi, Akihito Uji, Akiko Miki, Yukari Takasago, Rosa L. Schellevis, Seigo Yoneyama, Masayuki Hata, Anneke I. den Hollander, Ophthalmology, and ANS - Complex Trait Genetics

Subjects
Male, 0301 basic medicine, Oncology, medicine.medical_specialty, Quantitative Trait Loci, Gene Expression, Medicine (miscellaneous), Genome-wide association study, Disease, Genome-wide association studies, Article, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], General Biochemistry, Genetics and Molecular Biology, Pathogenesis, 03 medical and health sciences, All institutes and research themes of the Radboud University Medical Center, 0302 clinical medicine, Internal medicine, Databases, Genetic, Odds Ratio, medicine, Humans, Genetic Predisposition to Disease, Allele, lcsh:QH301-705.5, Gene, Alleles, business.industry, Computational Biology, Macular degeneration, medicine.disease, Retinal diseases, Europe, Serous fluid, 030104 developmental biology, Central Serous Chorioretinopathy, lcsh:Biology (General), Genetic Loci, Case-Control Studies, 030221 ophthalmology & optometry, Susceptibility locus, Female, sense organs, General Agricultural and Biological Sciences, business, Genome-Wide Association Study
Abstract

The recently emerged pachychoroid concept has changed the understanding of age-related macular degeneration (AMD), which is a major cause of blindness; recent studies attributed AMD in part to pachychoroid disease central serous chorioretinopathy (CSC), suggesting the importance of elucidating the CSC pathogenesis. Our large genome-wide association study followed by validation studies in three independent Japanese and European cohorts, consisting of 1546 CSC samples and 13, 029 controls, identified two novel CSC susceptibility loci: TNFRSF10A-LOC389641 and near GATA5 (rs13278062, odds ratio = 1.35, P = 1.26 × 10−13; rs6061548, odds ratio = 1.63, P = 5.36 × 10−15). A T allele at TNFRSF10A-LOC389641 rs13278062, a risk allele for CSC, is known to be a risk allele for AMD. This study not only identified new susceptibility genes for CSC, but also improves the understanding of the pathogenesis of AMD., 特殊な網膜剥離の発症に関わる遺伝子変異を発見 --中心性漿液性脈絡網膜症のゲノムワイド関連解析--. 京都大学プレスリリース. 2019-12-13.

Published
2019

44. Exome sequencing in families with chronic central serous chorioretinopathy

Author

Gijs W. E. Santen, Rosa L. Schellevis, Elon H. C. van Dijk, Jan E.E. Keunen, Camiel J. F. Boon, Myrte B. Breukink, Carel B. Hoyng, Eiko K. de Jong, Anneke I. den Hollander, Ophthalmology, and ANS - Complex Trait Genetics

Subjects
Male, 0301 basic medicine, chronic central serous chorioretinopathy, Disease, 030105 genetics & heredity, Biology, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], 03 medical and health sciences, symbols.namesake, All institutes and research themes of the Radboud University Medical Center, Gene Frequency, Genetics, Humans, Molecular Biology, Gene, Genetics (clinical), Exome sequencing, Receptor-Like Protein Tyrosine Phosphatases, Class 3, Original Articles, families, RareIBD, Pedigree, PTPRB, Minor allele frequency, Serous fluid, 030104 developmental biology, Central Serous Chorioretinopathy, PTPRB Gene, Mendelian inheritance, symbols, Etiology, Female, Original Article, exome sequencing
Abstract

Background: Central serous chorioretinopathy (CSC) is a chorioretinal disease characterized by fluid accumulation between the neuroretina and retinal pigment epithelium with unknown etiology. Family studies have suggested a heritable component for CSC with an autosomal dominant inheritance pattern. Therefore, exome sequencing was performed on familial cCSC to indentify the genetic components contributing to familial cCSC. Methods: Exome sequencing was performed on 72 individuals of 18 families with CSC. In these families, we determined whether rare genetic variants (minor allele frequency T; p.T1382I (rs61758735) in the PTPRB gene, was also associated with CSC in a large case–control cohort sequenced previously (p = 0.009). Additionally, in 28 genes two or more different heterozygous variants segregated in two or more families, but no gene showed consistent associations in both the family gene-burden results and gene-burden analysis in the case–control cohort. Conclusion: We identified potential candidate genes for familial CSC and managed to exclude Mendelian inheritance of variants in one or a limited number of genes. Instead, familial CSC may be a heterogeneous Mendelian disease caused by variants in many different genes, or alternatively CSC may represent a complex disease to which both environmental factors and genetics contribute.

Published
2019

45. A Nonsense Mutation in FAM161A Is a Recurrent Founder Allele in Dutch and Belgian Individuals With Autosomal Recessive Retinitis Pigmentosa

Author

Kristof Van Schil, Anneke I. den Hollander, Rob W.J. Collin, B. Jeroen Klevering, Dikla Bandah-Rozenfeld, Dror Sharon, Marijke N. Zonneveld-Vrieling, Frans P.M. Cremers, Jan Willem R. Pott, L. Ingeborgh van den Born, Elfride De Baere, and Bart P. Leroy

Subjects
Adult, Male, DISRUPTION, genetic structures, Nonsense mutation, DNA Mutational Analysis, Sensory disorders Radboud Institute for Health Sciences [Radboudumc 12], Genes, Recessive, Biology, symbols.namesake, Belgium, retinitis pigmentosa, Retinitis pigmentosa, REVEALS, medicine, Humans, FAM161A, CILIOPATHIES, Sensory disorders Radboud Institute for Molecular Life Sciences [Radboudumc 12], Eye Proteins, Alleles, Netherlands, bull's eye-like maculopathy, Genetics, Sanger sequencing, COMPLEX, Haplotype, TIME QUANTITATIVE PCR, DNA, Middle Aged, medicine.disease, Disease gene identification, eye diseases, COMPONENT, Pedigree, Haplotypes, Codon, Nonsense, Mutation (genetic algorithm), Mutation, symbols, founder mutation, Female, Age of onset, Founder effect
Abstract

Contains fulltext : 151962.pdf (Publisher’s version ) (Open Access) PURPOSE: To identify mutations in FAM161A underlying autosomal recessive retinitis pigmentosa (arRP) in the Dutch and Belgian populations and to investigate whether common FAM161A-associated phenotypic features could be identified. METHODS: Homozygosity mapping, amplification-refractory mutation system (ARMS) analysis, and Sanger sequencing were performed to identify mutations in FAM161A. Microsatellite and SNP markers were genotyped for haplotype analysis. Patients with biallelic mutations underwent detailed ophthalmologic examinations, including measuring best-corrected visual acuity, extensive fundus photography with reflectance and autofluorescence imaging, and optical coherence tomography. RESULTS: Homozygosity mapping in 230 Dutch individuals with suspected arRP yielded five individuals with a homozygous region harboring FAM161A. Sanger sequencing revealed a homozygous nonsense mutation (c.1309A>T; p.[Arg437*]) in one individual. Subsequent ARMS analysis and Sanger sequencing in Dutch and Belgian arRP patients resulted in the identification of seven additional individuals carrying the p.(Arg437*) mutation, either homozygously or compound heterozygously with another mutation. Haplotype analysis identified a shared haplotype block of 409 kb surrounding the p.(Arg437*) mutation in all patients, suggesting a founder effect. Although the age of onset was variable among patients, all eight developed pronounced outer retinal loss with severe visual field defects and a bull's eye-like maculopathy, followed by loss of central vision within 2 decades after the initial diagnosis in five subjects. CONCLUSIONS: A founder mutation in FAM161A p.(Arg437*) underlies approximately 2% of arRP cases in the Dutch and Belgian populations. The age of onset of the retinal dystrophy appears variable, but progression can be steep, with almost complete loss of central vision later in life.

Published
2015

46. Role of the Complement System in Chronic Central Serous Chorioretinopathy A Genome-Wide Association Study

Author

Myrte B. Breukink, Carel B. Hoyng, Elon H. C. van Dijk, Lebriz Altay, Rosa L. Schellevis, Eiko K. de Jong, Camiel J. F. Boon, Sascha Fauser, Lambertus A. Kiemeney, Jan E.E. Keunen, Bjorn Bakker, Anneke I. den Hollander, Dorine W. Swinkels, Bobby P. C. Koeleman, Ophthalmology, and ANS - Complex Trait Genetics

Subjects
Adult, Male, 0301 basic medicine, Oncology, medicine.medical_specialty, Population, Locus (genetics), Genome-wide association study, Complement factor I, Polymorphism, Single Nucleotide, White People, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], 03 medical and health sciences, All institutes and research themes of the Radboud University Medical Center, 0302 clinical medicine, Internal medicine, Odds Ratio, medicine, Humans, Fluorescein Angiography, education, Aged, Original Investigation, education.field_of_study, CD46, business.industry, Haplotype, Choroid Diseases, Odds ratio, Middle Aged, Ophthalmology, Renal disorders Radboud Institute for Molecular Life Sciences [Radboudumc 11], 030104 developmental biology, Haplotypes, Central Serous Chorioretinopathy, Chromosomes, Human, Pair 1, Genetic Loci, Case-Control Studies, Complement Factor H, Urological cancers Radboud Institute for Health Sciences [Radboudumc 15], Factor H, Chronic Disease, 030221 ophthalmology & optometry, Female, business, Genome-Wide Association Study
Abstract

Importance To date, several targeted genetic studies on chronic central serous chorioretinopathy (cCSC) have been performed; however, unbiased genome-wide studies into the genetics of cCSC have not been reported. To discover new genetic loci associated with cCSC and to better understand the causative mechanism of this disease, we performed a genome-wide association study (GWAS) on patients with cCSC. Objective To discover new genetic loci and pathways associated with cCSC and to predict the association of genetic variants with gene expression in patients with cCSC. Design, Setting, and Participants This case-control GWAS was completed in the general community, 3 referral university medical centers, and outpatient care on Europeans individuals with cCSC and population-based control participants. Genotype data was collected from May 2013 to August 2017, and data analysis occurred from August 2017 to November 2017. Main Outcomes and Measures Associations of single-nucleotide polymorphisms, haplotypes, genetic pathways, and predicted gene expression with cCSC. Results A total of 521 patients with cCSC (median age, 51 years; interquartile range [IQR], 44-59 years; 420 [80.6%] male) and 3577 European population-based control participants (median age, 52 years; IQR, 37-71 years; 1630 [45.6%] male) were included. One locus on chromosome 1 at the complement factor H ( CFH) gene reached genome-wide significance and was associated with an increased risk of cCSC (rs1329428; odds ratio [OR], 1.57 [95% CI, 1.38-1.80]; P = 3.12 × 10 −11 ). The CFH haplotypes H1 and H3 were protective for cCSC (H1: OR, 0.64 [95% CI, 0.53-0.77]; P = 2.18 × 10 −6 ; H3: OR, 0.54 [95% CI, 0.42-0.70]; P = 2.49 × 10 −6 ), whereas haplotypes H2, H4, H5, and the aggregate of rare CFH haplotypes conferred increased risk (H2: OR, 1.57 [95% CI, 1.30-1.89]; P = 2.18 × 10 −6 ; H4: OR, 1.43 [95% CI, 1.13-1.80]; P = 2.49 × 10 −3 ; H5: OR, 1.80 [95% CI, 1.36-2.39]; P = 4.61 × 10 −5 ; rare haplotypes: OR, 1.99 [95% CI, 1.43-2.77]; P = 4.59 × 10 −5 ). Pathway analyses showed involvement of the complement cascade and alternative open reading frame ( ARF) pathway in cCSC. Using PrediXcan, we identified changes in predicted expression of complement genes CFH, complement factor H related 1 ( CFHR1 ), complement factor related 4 ( CFHR4 ), and membrane cofactor protein ( MCP / CD46 ). Additionally, the potassium sodium-activated channel subfamily T member 2 ( KCNT2 ) and tumor necrosis factor receptor superfamily member 10a (TNFRSF10A) genes were differentially expressed in patients with cCSC. Conclusions and Relevance In this GWAS on cCSC, we identified a locus on chromosome 1 at the CFH gene that was significantly associated with cCSC, and we report protective and risk-conferring haplotypes in this gene. Pathway analyses were enriched for complement genes, and gene expression analysis suggests a role for CFH, CFHR1, CFHR4, CD46, KCNT2 , and TNFRSF10A in the disease. Taken together, these results underscore the potential importance of the complement pathway in the causative mechanisms of cCSC.

Published
2018

47. Protein-altering variants associated with body mass index implicate pathways that control energy intake and expenditure in obesity

Author

Alison Pattie, Ailith Pirie, Francis S. Collins, Charles Kooperberg, Nienke van Leeuwen, Carmel Moore, Sharon L.R. Kardia, Neil R. Robertson, Lisa Bastarache, Allan Linneberg, Peter T. Campbell, Helena Kuivaniemi, Struan F.A. Grant, Sascha Fauser, Sekar Kathiresan, Lars Lind, Erin B. Ware, Olli T. Raitakari, Dawn M. Waterworth, James G. Wilson, Markus Perola, Chris J. Packard, Michelle L. O'Donoghue, Fredrik Karpe, Roel A. Ophoff, Sailaja Vedantam, Artitaya Lophatananon, Uwe Völker, Emmanouil Tsafantakis, Hakon Hakonarson, Dajiang J. Liu, Craig E. Pennell, Xueling Sim, Jennifer E. Huffman, Sandosh Padmanabhan, Digna R. Velez Edwards, Michiel L. Bots, Ayush Giri, Renée de Mutsert, Emanuele Di Angelantonio, Nicholas J. Wareham, Jin Li, Gail P. Jarvik, Evangelos Evangelou, Anne Tybjærg-Hansen, Patricia B. Munroe, Penny Gordon-Larsen, Lia E. Bang, Ivan Brandslund, Hester M. den Ruijter, Jussi Hernesniemi, Nancy L. Heard-Costa, Angela L. Mazul, Jonathan Tyrer, Danish Saleheen, Mark J. Caulfield, John Andrew Pospisilik, Annette Peters, Caroline Hayward, Iris M. Heid, J. Wouter Jukema, Valérie Turcot, Matt Neville, Rudolf Uher, Patricia A. Peyser, Jessica D. Faul, Asif Rasheed, Shuai Wang, John C. Chambers, Jordi Corominas Galbany, Murray H. Brilliant, Yucheng Jia, Torben Hansen, Veikko Salomaa, Mary F. Feitosa, Mathias Gorski, Li-An Lin, George Dedoussis, Honghuang Lin, Ethan M. Lange, Veronique Vitart, Bratati Kahali, Alexander Teumer, Jerome I. Rotter, Wayne H-H Sheu, Vilmantas Giedraitis, Aliki-Eleni Farmaki, Lorraine Southam, Ele Ferrannini, Anette P. Gjesing, Krina T. Zondervan, Stavroula Kanoni, David J. Roberts, Rebecca S. Fine, Svati H. Shah, Tugce Karaderi, Claudia Langenberg, Stefan Johansson, Elizabeth K. Speliotes, Alexander P. Reiner, Ching-Ti Liu, Yiqin Wang, Pål R. Njølstad, Gabriel Cuellar-Partida, Amanda J. Cox, Tim D. Spector, Paul W. Franks, Anke Tönjes, John D. Rioux, Jeffrey Haessler, Paul L. Auer, Ingrid B. Borecki, Deborah J. Thompson, Weihua Zhang, John R. B. Perry, Paul Elliott, Folkert W. Asselbergs, Myriam Fornage, Ken Sin Lo, Marie Moitry, Paul Mitchell, Martin den Heijer, Zoltán Kutalik, Tune H. Pers, Kari Stefansson, Kari Kuulasmaa, Robert E. Schoen, Mark C.H. De Groot, Laura M. Yerges-Armstrong, Jing Hua Zhao, Beverley Balkau, Peggy L. Peissig, Michael Boehnke, Janie Corley, Katharine R. Owen, Unnur Thorsteinsdottir, Naveed Sattar, Sita H. Vermeulen, Thomas N. Person, Mark I. McCarthy, Paul I.W. de Bakker, David Lamparter, Poorva Mudgal, Nicholette D. Palmer, Maria Karaleftheri, Jan-Håkan Jansson, Ozren Polasek, Ruth J. F. Loos, Daniel R. Witte, Dermot F. Reilly, Anubha Mahajan, Stella Trompet, James A. Perry, Yingchang Lu, Claudia Schurmann, Yii-Der Ida Chen, Hidetoshi Kitajima, Dale R. Nyholt, John Danesh, Pamela J. Schreiner, Narisu Narisu, Jose C. Florez, Adelheid Lempradl, Gerome Breen, Torben Jørgensen, Anu Loukola, Joe Dennis, Hans-Jörgen Grabe, Vilmundur Gudnason, Timo A. Lakka, Heather M. Highland, Sven Bergmann, Marie-Pierre Dubé, Giovanni Veronesi, Martina Müller-Nurasyid, Jaakko Tuomilehto, Nele Friedrich, Joel N. Hirschhorn, Pia R. Kamstrup, Nilesh J. Samani, Josh C. Denny, Mika Kähönen, Massimiliano Cocca, Liang Sun, Karina Meidtner, Carsten A. Böger, Sara M. Willems, Marcelo P. Segura-Lepe, Johanna Kuusisto, Hanieh Yaghootkar, Konstantin Strauch, Ruth Frikke-Schmidt, Jane Gibson, Matti Uusitupa, Oscar H. Franco, Yongmei Liu, Heather M. Stringham, Rohit Varma, Grant W. Montgomery, Dennis O. Mook-Kanamori, Stefania Cappellani, Paul L. Huang, Albert V. Smith, Eric Kim, Anke R. Hammerschlag, Katherine S. Ruth, Carolina Medina-Gomez, Gerard Pasterkamp, Cristen J. Willer, Alisa K. Manning, Frida Renström, René S. Kahn, Lili Milani, Feijie Wang, Tessel E. Galesloot, Fernando Rivadeneira, Leo-Pekka Lyytikäinen, Adam S. Butterworth, Tamara B. Harris, Matthew A. Allison, Paul M. Ridker, David J. Carey, Todd L. Edwards, Panos Deloukas, Xiuqing Guo, Lawrence F. Bielak, Leena Moilanen, Heiner Boeing, Peter Kovacs, Karen L. Mohlke, Myriam Rheinberger, Cramer Christensen, Betina H. Thuesen, Mike A. Nalls, Erik Ingelsson, Nicholas G. D. Masca, Colin N. A. Palmer, Audrey E. Hendricks, Linda Broer, Vanisha Mistry, Praveen Surendran, Audrey Y. Chu, Rainer Rauramaa, Angela D'Eustacchio, Helen Griffiths, Satu Männistö, Patrick T. Ellinor, Terho Lehtimäki, Katherine E. Tansey, I. Sadaf Farooqi, Gaëlle Marenne, Anneke I. den Hollander, Jessica van Setten, Hannu Puolijoki, Tinca J. C. Polderman, Timothy M. Frayling, Niels Grarup, Eric Boerwinkle, Gonçalo R. Abecasis, Adam E. Locke, Mengmeng Du, Manuel A. Rivas, Philippe Amouyel, Jaakko Kaprio, Leslie A. Lange, Loes M. Olde Loohuis, Trevor A. Mori, Lambertus A. Kiemeney, Wei Zhao, Eva Rb Petersen, Huaixing Li, Thomas W. Winkler, Tellervo Korhonen, Kathleen Stirrups, Jean Ferrières, Wei Zhou, Ian J. Deary, Guillaume Lettre, M. Arfan Ikram, Alex W. Hewitt, Marit E. Jørgensen, Ian Ford, Liang He, Mark Walker, Stefan Gustafsson, Andre Franke, Yao Hu, Jaana Lindström, Jonathan P. Bradfield, Anne E. Justice, Kristin L. Young, Sander W. van der Laan, Shuang Feng, Yadav Sapkota, Douglas F. Easton, Cornelia M. van Duijn, Amy J. Swift, Kjell Nikus, Helen R. Warren, Christian Theil Have, Wei Gan, Steven A. Lubitz, Harvey D. White, Pirjo Komulainen, John M. Starr, Jeffrey R. O'Connel, Anette Varbo, Daniel I. Chasman, Ruifang Li-Gao, Lynne E. Wagenknecht, Matthias Blüher, Xiaowei Zhan, Thomas F. Vogt, Eleftheria Zeggini, Tamuno Alfred, Katja K.H. Aben, Lars Wallentin, Joanna M. M. Howson, Jie Yao, Eulalia Catamo, Henrik Vestergaard, Gina M. Peloso, Markku Laakso, Matthias B. Schulze, Hayato Tada, Jennifer Wessel, Andrew R. Wood, Erwin P. Bottinger, Cora E. Lewis, Robin Young, Carol A. Wang, Oddgeir L. Holmen, Andrew J. Slater, Jean-Claude Tardif, Xu Lin, Inês Barroso, Gail Davies, Tibor V. Varga, Andrew J. Lotery, Igor Rudan, Andrew T. Hattersley, Michael Stumvoll, David Ellinghaus, Andrew C. Heath, Frank Kee, Christopher P. Nelson, Donald W. Bowden, Alison M. Dunning, Marianne Benn, Oluf Pedersen, Amber A. Burt, Aniruddh P. Patel, G. Kees Hovingh, David S. Crosslin, Gorm B. Jensen, Keng-Hung Lin, Dewan S. Alam, Jian'an Luan, Ying Wu, Tõnu Esko, Kathleen Mullan Harris, Antonietta Robino, Anne U. Jackson, Eirini Marouli, Robert A. Scott, Jette Bork-Jensen, Olov Rolandsson, Nanette R. Lee, Gerard Tromp, Megan L. Grove, Suthesh Sivapalaratnam, Sameer E. Al-Harthi, Roberta McKean-Cowdin, Paolo Gasparini, Ellen W. Demerath, Marco Brumat, Maggie C.Y. Ng, Børge G. Nordestgaard, Kari E. North, Rajiv Chowdhury, Mauno Vanhala, Andrew P. Morris, Sarah E. Medland, Sune F. Nielsen, Ilaria Gandin, Øyvind Helgeland, James P. Cook, Kent D. Taylor, Andrew D. Morris, Gudmar Thorleifsson, André G. Uitterlinden, Pang Yao, Valgerdur Steinthorsdottir, Eric B. Larson, Kerrin S. Small, Cecilia M. Lindgren, Dragana Vuckovic, Mariaelisa Graff, Fotios Drenos, Jaspal S. Kooner, Schurmann, Claudia [0000-0003-4158-9192], Justice, Anne E [0000-0002-8903-8712], Giri, Ayush [0000-0002-7786-4670], Locke, Adam E [0000-0001-6227-198X], Young, Kristin L [0000-0003-0070-6145], Medina-Gomez, Carolina [0000-0001-7999-5538], Winkler, Thomas W [0000-0003-0292-5421], Zeggini, Eleftheria [0000-0003-4238-659X], Zhao, Wei [0000-0002-8301-9297], Zondervan, Krina T [0000-0002-0275-9905], Pospisilik, John A [0000-0002-9745-0977], Rivadeneira, Fernando [0000-0001-9435-9441], Deloukas, Panos [0000-0001-9251-070X], Apollo - University of Cambridge Repository, Vascular Medicine, ACS - Amsterdam Cardiovascular Sciences, ACS - Atherosclerosis & ischemic syndromes, Internal Medicine, Epidemiology, Obstetrics & Gynecology, Radiology & Nuclear Medicine, CHD Exome+ Consortium, EPIC-CVD Consortium, ExomeBP Consortium, Global Lipids Genetic Consortium, GoT2D Genes Consortium, EPIC InterAct Consortium, INTERVAL Study, ReproGen Consortium, T2D-Genes Consortium, MAGIC Investigators, Understanding Society Scientific Group, Biological Psychology, Complex Trait Genetics, Amsterdam Neuroscience - Complex Trait Genetics, British Heart Foundation, Wellcome Trust, Medical Research Council (MRC), National Institute for Health Research, Home Office, National Institutes of Health, Imperial College Healthcare NHS Trust- BRC Funding, Turcot, Valérie, Lu, Yingchang, Highland, Heather M., Schurmann, Claudia, Justice, Anne E., Fine, Rebecca S., Bradfield, Jonathan P., Esko, Tõnu, Giri, Ayush, Graff, Mariaelisa, Guo, Xiuqing, Hendricks, Audrey E., Karaderi, Tugce, Lempradl, Adelheid, Locke, Adam E., Mahajan, Anubha, Marouli, Eirini, Sivapalaratnam, Suthesh, Young, Kristin L., Alfred, Tamuno, Feitosa, Mary F., Masca, Nicholas G. D., Manning, Alisa K., Medina-Gomez, Carolina, Mudgal, Poorva, Ng, Maggie C. Y., Reiner, Alex P., Vedantam, Sailaja, Willems, Sara M., Winkler, Thomas W., Abecasis, Gonçalo, Aben, Katja K., Alam, Dewan S., Alharthi, Sameer E., Allison, Matthew, Amouyel, Philippe, Asselbergs, Folkert W., Auer, Paul L., Balkau, Beverley, Bang, Lia E., Barroso, Inê, Bastarache, Lisa, Benn, Marianne, Bergmann, Sven, Bielak, Lawrence F., Blüher, Matthia, Boehnke, Michael, Boeing, Heiner, Boerwinkle, Eric, Böger, Carsten A., Bork-Jensen, Jette, Bots, Michiel L., Bottinger, Erwin P., Bowden, Donald W., Brandslund, Ivan, Breen, Gerome, Brilliant, Murray H., Broer, Linda, Brumat, Marco, Burt, Amber A., Butterworth, Adam S., Campbell, Peter T., Cappellani, Stefania, Carey, David J., Catamo, Eulalia, Caulfield, Mark J., Chambers, John C., Chasman, Daniel I., Chen, Yii-Der I., Chowdhury, Rajiv, Christensen, Cramer, Chu, Audrey Y., Cocca, Massimiliano, Collins, Francis S., Cook, James P., Corley, Janie, Corominas Galbany, Jordi, Cox, Amanda J., Crosslin, David S., Cuellar-Partida, Gabriel, D'Eustacchio, Angela, Danesh, John, Davies, Gail, Bakker, Paul I. W., Groot, Mark C. H., Mutsert, Renée, Deary, Ian J., Dedoussis, George, Demerath, Ellen W., Heijer, Martin, Hollander, Anneke I., Ruijter, Hester M., Dennis, Joe G., Denny, Josh C., Angelantonio, Emanuele, Drenos, Fotio, Du, Mengmeng, Dubé, Marie-Pierre, Dunning, Alison M., Easton, Douglas F., Edwards, Todd L., Ellinghaus, David, Ellinor, Patrick T., Elliott, Paul, Evangelou, Evangelo, Farmaki, Aliki-Eleni, Farooqi, I. Sadaf, Faul, Jessica D., Fauser, Sascha, Feng, Shuang, Ferrannini, Ele, Ferrieres, Jean, Florez, Jose C., Ford, Ian, Fornage, Myriam, Franco, Oscar H., Franke, Andre, Franks, Paul W., Friedrich, Nele, Frikke-Schmidt, Ruth, Galesloot, Tessel E., Gan, Wei, Gandin, Ilaria, Gasparini, Paolo, Gibson, Jane, Giedraitis, Vilmanta, Gjesing, Anette P., Gordon-Larsen, Penny, Gorski, Mathia, Grabe, Hans-Jörgen, Grant, Struan F. A., Grarup, Niel, Griffiths, Helen L., Grove, Megan L., Gudnason, Vilmundur, Gustafsson, Stefan, Haessler, Jeff, Hakonarson, Hakon, Hammerschlag, Anke R., Hansen, Torben, Harris, Kathleen Mullan, Harris, Tamara B., Hattersley, Andrew T., Have, Christian T., Hayward, Caroline, He, Liang, Heard-Costa, Nancy L., Heath, Andrew C., Heid, Iris M., Helgeland, Øyvind, Hernesniemi, Jussi, Hewitt, Alex W., Holmen, Oddgeir L., Hovingh, G. Kee, Howson, Joanna M. M., Hu, Yao, Huang, Paul L., Huffman, Jennifer E., Ikram, M. Arfan, Ingelsson, Erik, Jackson, Anne U., Jansson, Jan-Håkan, Jarvik, Gail P., Jensen, Gorm B., Jia, Yucheng, Johansson, Stefan, Jørgensen, Marit E., Jørgensen, Torben, Jukema, J. Wouter, Kahali, Bratati, Kahn, René S., Kähönen, Mika, Kamstrup, Pia R., Kanoni, Stavroula, Kaprio, Jaakko, Karaleftheri, Maria, Kardia, Sharon L. R., Karpe, Fredrik, Kathiresan, Sekar, Kee, Frank, Kiemeney, Lambertus A., Kim, Eric, Kitajima, Hidetoshi, Komulainen, Pirjo, Kooner, Jaspal S., Kooperberg, Charle, Korhonen, Tellervo, Kovacs, Peter, Kuivaniemi, Helena, Kutalik, Zoltán, Kuulasmaa, Kari, Kuusisto, Johanna, Laakso, Markku, Lakka, Timo A., Lamparter, David, Lange, Ethan M., Lange, Leslie A., Langenberg, Claudia, Larson, Eric B., Lee, Nanette R., Lehtimäki, Terho, Lewis, Cora E., Li, Huaixing, Li, Jin, Li-Gao, Ruifang, Lin, Honghuang, Lin, Keng-Hung, Lin, Li-An, Lin, Xu, Lind, Lar, Lindström, Jaana, Linneberg, Allan, Liu, Ching-Ti, Liu, Dajiang J., Liu, Yongmei, Lo, Ken S., Lophatananon, Artitaya, Lotery, Andrew J., Loukola, Anu, Luan, Jian'An, Lubitz, Steven A., Lyytikäinen, Leo-Pekka, Männistö, Satu, Marenne, Gaëlle, Mazul, Angela L., Mccarthy, Mark I., McKean-Cowdin, Roberta, Medland, Sarah E., Meidtner, Karina, Milani, Lili, Mistry, Vanisha, Mitchell, Paul, Mohlke, Karen L., Moilanen, Leena, Moitry, Marie, Montgomery, Grant W., Mook-Kanamori, Dennis O., Moore, Carmel, Mori, Trevor A., Morris, Andrew D., Morris, Andrew P., Müller-Nurasyid, Martina, Munroe, Patricia B., Nalls, Mike A., Narisu, Narisu, Nelson, Christopher P., Neville, Matt, Nielsen, Sune F., Nikus, Kjell, Njølstad, Pål R., Nordestgaard, Børge G., Nyholt, Dale R., O'Connel, Jeffrey R., O'Donoghue, Michelle L., Olde Loohuis, Loes M., Ophoff, Roel A., Owen, Katharine R., Packard, Chris J., Padmanabhan, Sandosh, Palmer, Colin N. A., Palmer, Nicholette D., Pasterkamp, Gerard, Patel, Aniruddh P., Pattie, Alison, Pedersen, Oluf, Peissig, Peggy L., Peloso, Gina M., Pennell, Craig E., Perola, Marku, Perry, James A., Perry, John R. B., Pers, Tune H., Person, Thomas N., Peters, Annette, Petersen, Eva R. B., Peyser, Patricia A., Pirie, Ailith, Polasek, Ozren, Polderman, Tinca J., Puolijoki, Hannu, Raitakari, Olli T., Rasheed, Asif, Rauramaa, Rainer, Reilly, Dermot F., Renström, Frida, Rheinberger, Myriam, Ridker, Paul M., Rioux, John D., Rivas, Manuel A., Roberts, David J., Robertson, Neil R., Robino, Antonietta, Rolandsson, Olov, Rudan, Igor, Ruth, Katherine S., Saleheen, Danish, Salomaa, Veikko, Samani, Nilesh J., Sapkota, Yadav, Sattar, Naveed, Schoen, Robert E., Schreiner, Pamela J., Schulze, Matthias B., Scott, Robert A., Segura-Lepe, Marcelo P., Shah, Svati H., Sheu, Wayne H. -H., Sim, Xueling, Slater, Andrew J., Small, Kerrin S., Smith, Albert V., Southam, Lorraine, Spector, Timothy D., Speliotes, Elizabeth K., Starr, John M., Stefansson, Kari, Steinthorsdottir, Valgerdur, Stirrups, Kathleen E., Strauch, Konstantin, Stringham, Heather M., Stumvoll, Michael, Sun, Liang, Surendran, Praveen, Swift, Amy J., Tada, Hayato, Tansey, Katherine E., Tardif, Jean-Claude, Taylor, Kent D., Teumer, Alexander, Thompson, Deborah J., Thorleifsson, Gudmar, Thorsteinsdottir, Unnur, Thuesen, Betina H., Tönjes, Anke, Tromp, Gerard, Trompet, Stella, Tsafantakis, Emmanouil, Tuomilehto, Jaakko, Tybjaerg-Hansen, Anne, Tyrer, Jonathan P., Uher, Rudolf, Uitterlinden, André G., Uusitupa, Matti, Laan, Sander W., Duijn, Cornelia M., Leeuwen, Nienke, Van Setten, Jessica, Vanhala, Mauno, Varbo, Anette, Varga, Tibor V., Varma, Rohit, Velez Edwards, Digna R., Vermeulen, Sita H., Veronesi, Giovanni, Vestergaard, Henrik, Vitart, Veronique, Vogt, Thomas F., Völker, Uwe, Vuckovic, Dragana, Wagenknecht, Lynne E., Walker, Mark, Wallentin, Lar, Wang, Feijie, Wang, Carol A., Wang, Shuai, Wang, Yiqin, Ware, Erin B., Wareham, Nicholas J., Warren, Helen R., Waterworth, Dawn M., Wessel, Jennifer, White, Harvey D., Willer, Cristen J., Wilson, James G., Witte, Daniel R., Wood, Andrew R., Wu, Ying, Yaghootkar, Hanieh, Yao, Jie, Yao, Pang, Yerges-Armstrong, Laura M., Young, Robin, Zeggini, Eleftheria, Zhan, Xiaowei, Zhang, Weihua, Zhao, Jing Hua, Zhao, Wei, Zhou, Wei, Zondervan, Krina T, Rotter, Jerome I., Pospisilik, John A., Rivadeneira, Fernando, Borecki, Ingrid B., Deloukas, Pano, Frayling, Timothy M., Lettre, Guillaume, North, Kari E., Lindgren, Cecilia M., Hirschhorn, Joel N., Loos, Ruth J. F., Internal medicine, AGEM - Endocrinology, metabolism and nutrition, Amsterdam Movement Sciences - Rehabilitation & Development, Amsterdam Movement Sciences - Restoration and Development, APH - Aging & Later Life, Physiology, and VU University medical center

Subjects
0301 basic medicine, Male, ReproGen Consortium, MathematicsofComputing_GENERAL, Genome-wide association study, medicine.disease_cause, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], Body Mass Index, genetics [Obesity], 0302 clinical medicine, Gene Frequency, Glucose homeostasis, Adult, Animals, Drosophila/genetics, Energy Intake/genetics, Energy Metabolism/genetics, Female, Genetic Variation, Humans, Obesity/genetics, Proteins/genetics, Syndrome, 11 Medical and Health Sciences, 2. Zero hunger, Genetics, Genetics & Heredity, Mutation, CHD Exome+ Consortium, body mass index, TheoryofComputation_GENERAL, T2D-Genes Consortium, GENOME-WIDE ASSOCIATION, MELANOCORTIN-4 RECEPTOR GENE, DONEPEZIL 23 MG, FRAMESHIFT MUTATION, GLUCOSE-HOMEOSTASIS, HYPOTHALAMIC AMPK, CODING VARIANTS, BLOOD-PRESSURE, RARE, LOCI, Urological cancers Radboud Institute for Health Sciences [Radboudumc 15], Drosophila, ExomeBP Consortium, Life Sciences & Biomedicine, INTERVAL Study, Understanding Society Scientific Group, EPIC InterAct Consortium, genetics [Energy Metabolism], Biology, EPIC-CVD Consortium, Frameshift mutation, 03 medical and health sciences, MAGIC Investigators, All institutes and research themes of the Radboud University Medical Center, Genetic, SDG 3 - Good Health and Well-being, ddc:570, genetics [Drosophila], medicine, Journal Article, Global Lipids Genetic Consortium, Obesity, Gene, Allele frequency, Genetic association, Science & Technology, Proteins, 06 Biological Sciences, genetics [Proteins], Minor allele frequency, 030104 developmental biology, GoT2D Genes Consortium, Energy Intake, Energy Metabolism, genetics [Energy Intake], 030217 neurology & neurosurgery, Developmental Biology
Abstract

Genome-wide association studies (GWAS) have identified >250 loci for body mass index (BMI), implicating pathways related to neuronal biology. Most GWAS loci represent clusters of common, noncoding variants from which pinpointing causal genes remains challenging. Here we combined data from 718,734 individuals to discover rare and low-frequency (minor allele frequency (MAF) < 5%) coding variants associated with BMI. We identified 14 coding variants in 13 genes, of which 8 variants were in genes (ZBTB7B, ACHE, RAPGEF3, RAB21, ZFHX3, ENTPD6, ZFR2 and ZNF169) newly implicated in human obesity, 2 variants were in genes (MC4R and KSR2) previously observed to be mutated in extreme obesity and 2 variants were in GIPR. The effect sizes of rare variants are ~10 times larger than those of common variants, with the largest effect observed in carriers of an MC4R mutation introducing a stop codon (p.Tyr35Ter, MAF = 0.01%), who weighed ~7 kg more than non-carriers. Pathway analyses based on the variants associated with BMI confirm enrichment of neuronal genes and provide new evidence for adipocyte and energy expenditure biology, widening the potential of genetically supported therapeutic targets in obesity.

Published
2018

48. Prevalence of Age-Related Macular Degeneration in Europe

Author

Johanna M. Colijn, Gabriëlle H.S. Buitendijk, Elena Prokofyeva, Dalila Alves, Maria L. Cachulo, Anthony P. Khawaja, Audrey Cougnard-Gregoire, Bénédicte M.J. Merle, Christina Korb, Maja G. Erke, Alain Bron, Eleftherios Anastasopoulos, Magda A. Meester-Smoor, Tatiana Segato, Stefano Piermarocchi, Paulus T.V.M. de Jong, Johannes R. Vingerling, Fotis Topouzis, Catherine Creuzot-Garcher, Geir Bertelsen, Norbert Pfeiffer, Astrid E. Fletcher, Paul J. Foster, Rufino Silva, Jean-François Korobelnik, Cécile Delcourt, Caroline C.W. Klaver, Soufiane Ajana, Blanca Arango-Gonzalez, Verena Arndt, Vaibhav Bhatia, Shomi S. Bhattacharya, Marc Biarnés, Anna Borrell, Sebastian Bühren, Sofia M. Calado, Audrey Cougnard-Grégoire, Sascha Dammeier, Eiko K. de Jong, Berta De la Cerda, Anneke I. den Hollander, Francisco J. Diaz-Corrales, Sigrid Diether, Eszter Emri, Tanja Endermann, Lucia L. Ferraro, Míriam Garcia, Thomas J. Heesterbeek, Sabina Honisch, Carel B. Hoyng, Eveline Kersten, Ellen Kilger, Hanno Langen, Imre Lengyel, Phil Luthert, Cyrille Maugeais, Magda Meester-Smoor, Jordi Monés, Everson Nogoceke, Tunde Peto, Frances M. Pool, Eduardo Rodríguez, Marius Ueffing, Karl U. Ulrich Bartz-Schmidt, Elisabeth M. van Leeuwen, Timo Verzijden, Markus Zumbansen, Niyazi Acar, Eleftherios Anastosopoulos, Augusto Azuara-Blanco, Arthur Bergen, Christine Binquet, Alan Bird, Lionel Brétillon, Gabrielle Buitendijk, Maria Luz Cachulo, Usha Chakravarthy, Michelle Chan, Petrus Chang, Johanna Colijn, Philippa Cumberland, José Cunha-Vaz, Vincent Daien, Gabor Deak, Marie-Noëlle Delyfer, Anneke den Hollander, Martha Dietzel, Maja Gran Erke, Sascha Fauser, Robert Finger, Astrid Fletcher, Paul Foster, Panayiota Founti, Arno Göbel, Theo Gorgels, Jakob Grauslund, Franz Grus, Christopher Hammond, Catherine Helmer, Hans-Werner Hense, Manuel Hermann, René Hoehn, Ruth Hogg, Frank Holz, Carel Hoyng, Nomdo Jansonius, Sarah Janssen, Anthony Khawaja, Caroline Klaver, Julia Lamparter, Mélanie Le Goff, Sergio Leal, Yara Lechanteur, Terho Lehtimäki, Andrew Lotery, Irene Leung, Matthias Mauschitz, Bénédicte Merle, Verena Meyer zu Westrup, Edoardo Midena, Stefania Miotto, Alireza Mirshahi, Sadek Mohan-Saïd, Michael Mueller, Alyson Muldrew, Sandrina Nunes, Konrad Oexle, Jugnoo Rahi, Olli Raitakari, Luisa Ribeiro, Marie-Bénédicte Rougier, José Sahel, Aggeliki Salonikiou, Clarisa Sanchez, Steffen Schmitz-Valckenberg, Cédric Schweitzer, Jasmin Shehata, Giuliana Silvestri, Christian Simader, Eric Souied, Henriet Springelkamp, Robyn Tapp, Virginie Verhoeven, Therese Von Hanno, Stela Vujosevic, Katie Williams, Christian Wolfram, Jennifer Yip, Jennyfer Zerbib, Isabella Zwiener, Erasmus University Rotterdam, Scientific Institute for Public Health, Federal Agency for Medicines and Health Products, Partenaires INRAE, Association for Innovation and Biomedical Research on Light and Image (AIBILI), Universidade de Coimbra, Coimbra University Hospital (CHUC), University of Cambridge [UK] (CAM), Moorfields Eye Hospital NHS Foundation Trust, Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Bordeaux (UB), Mainz University Medical Center, Oslo University Hospital [Oslo], Centre des Sciences du Goût et de l'Alimentation [Dijon] (CSGA), Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), Department of Ophthalmology, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Aristotle University of Thessaloniki, Universitad de Padua, Univ Padua, Dept Ophthalmol, Padua, Italy, Royal Netherlands Academy of Arts and Sciences (KNAW), University Hospital of North Norway [Tromsø] (UNN), London School of Hygiene and Tropical Medicine (LSHTM), Institute of Ophthalmology, University of Messina, CHU Bordeaux [Bordeaux], Radboud University Medical Center [Nijmegen], The European Eye Epidemiology (E3) Consortium, Epidemiology, Ophthalmology, Erasmus MC other, Other departments, ANS - Complex Trait Genetics, Human Genetics, and Genome Analysis

Subjects
0301 basic medicine, medicine.medical_specialty, Visual acuity, OPTICAL COHERENCE TOMOGRAPHY, MACULOPATHY, genetic structures, Population, Prevalence, HEART-DISEASE, choroidal neovascularization, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], 03 medical and health sciences, Rotterdam Study, 0302 clinical medicine, All institutes and research themes of the Radboud University Medical Center, BEAVER DAM EYE, Epidemiology, geographic atrophy, medicine, VISUAL IMPAIRMENT, [SDV.MHEP.OS]Life Sciences [q-bio]/Human health and pathology/Sensory Organs, education, POPULATION, education.field_of_study, BIRTH COHORT, business.industry, Macular degeneration, medicine.disease, TRENDS, Confidence interval, eye diseases, 3. Good health, European Prospective Investigation into Cancer and Nutrition, Ophthalmology, 030104 developmental biology, Age-related Macular Degeneration, ENDOTHELIAL GROWTH-FACTOR, BLINDNESS, 030221 ophthalmology & optometry, Optometry, Age-related Macular Degeneration, choroidal neovascularization, geographic atrophy, sense organs, medicine.symptom, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Demography
Abstract

Manuscript no. 2016-1147 Supplemental material is available at www.aaojournal.org/; International audience; [u]Purpose:[/u] Age-related macular degeneration (AMD) is a frequent, complex disorder in elderly of European ancestry. Risk profiles and treatment options have changed considerably over the years, which may have affected disease prevalence and outcome. We determined the prevalence of early and late AMD in Europe from 1990 to 2013 using the European Eye Epidemiology (E3) consortium, and made projections for the future. [u]Design:[/u] Meta-analysis of prevalence data. [u]Participants:[/u] A total of 42 080 individuals 40 years of age and older participating in 14 population-based cohorts from 10 countries in Europe. [u]Methods:[/u] AMD was diagnosed based on fundus photographs using the Rotterdam Classification. Prevalence of early and late AMD was calculated using random-effects meta-analysis stratified for age, birth cohort, gender, geographic region, and time period of the study. Best-corrected visual acuity (BCVA) was compared between late AMD subtypes; geographic atrophy (GA) and choroidal neovascularization (CNV). [u]Main Outcome Measures:[/u] Prevalence of early and late AMD, BCVA, and number of AMD cases. [u]Results:[/u] Prevalence of early AMD increased from 3.5% (95% confidence interval [CI] 2.1% -5.0%) in those aged 55-59 years to 17.6% (95% CI 13.6%-21.5%) in those aged >= 85 years; for late AMD these figures were 0.1% (95% CI 0.04%-0.3%) and 9.8% (95% CI 6.3%-13.3%), respectively. We observed a decreasing prevalence of late AMD after 2006, which became most prominent after age 70. Prevalences were similar for gender across all age groups except for late AMD in the oldest age category, and a trend was found showing a higher prevalence of CNV in Northern Europe. After 2006, fewer eyes and fewer >= 80-year-old subjects with CNV were visually impaired (P = 0.016). Projections of AMD showed an almost doubling of affected persons despite a decreasing prevalence. By 2040, the number of individuals in Europe with early AMD will range between 14.9 and 21.5 million, and for late AMD between 3.9 and 4.8 million. [u]Conclusion:[/u] We observed a decreasing prevalence of AMD and an improvement in visual acuity in CNV occuring over the past 2 decades in Europe. Healthier lifestyles and implementation of anti-vascular endothelial growth factor treatment are the most likely explanations. Nevertheless, the numbers of affected subjects will increase considerably in the next 2 decades. AMD continues to remain a significant public health problem among Europeans.

Published
2017

49. Association of a Haplotype in the NR3C2 Gene, Encoding the Mineralocorticoid Receptor, With Chronic Central Serous Chorioretinopathy

Author

Eiko K. de Jong, Paula Scholz, Carel B. Hoyng, Anneke I. den Hollander, Rosa L. Schellevis, Camiel J. F. Boon, Sascha Fauser, Myrte B. Breukink, Onno C. Meijer, Lebriz Altay, Maaike G.J.M. van Bergen, and Elon H. C. van Dijk

Subjects
0301 basic medicine, Oncology, Male, medicine.medical_specialty, Genotype, Fundus Oculi, Cancer development and immune defence Radboud Institute for Molecular Life Sciences [Radboudumc 2], Sensory disorders Radboud Institute for Health Sciences [Radboudumc 12], Genome-wide association study, Polymorphism, Single Nucleotide, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], Pathogenesis, 03 medical and health sciences, 0302 clinical medicine, Mineralocorticoid receptor, Glucocorticoid receptor, Polymorphism (computer science), Internal medicine, Medicine, Humans, Genetic Predisposition to Disease, Fluorescein Angiography, Genetic Association Studies, Genetic association, Retrospective Studies, Original Investigation, business.industry, Haplotype, Odds ratio, Middle Aged, Ophthalmology, 030104 developmental biology, Endocrinology, Receptors, Mineralocorticoid, Central Serous Chorioretinopathy, Haplotypes, Chronic Disease, 030221 ophthalmology & optometry, Female, business, hormones, hormone substitutes, and hormone antagonists, Tomography, Optical Coherence
Abstract

Item does not contain fulltext Importance: Chronic central serous chorioretinopathy (cCSC) is a chorioretinal disease with unknown disease etiology. The glucocorticoid receptor and the mineralocorticoid receptor, 2 glucocorticoid-binding receptors, might be involved in the pathogenesis of cCSC. Objective: To assess the association of functional variants and haplotypes in the glucocorticoid receptor (NR3C1) and mineralocorticoid receptor (NR3C2) genes with cCSC. Design, Setting, and Participants: In this case-control genetic association study, 336 patients with cCSC and 1314 unaffected controls, collected at 3 university medical centers from September 1, 2009, to May 1, 2016, underwent KASP genotyping for selected variants in NR3C1 (rs56149945, rs41423247, and rs6198) and NR3C2 (rs2070951 and rs5522). Main Outcomes and Measures: Genetic associations of 3 NR3C1 variants and 2 NR3C2 variants with cCSC. Results: Among the 336 patients (274 men and 62 women; mean [SD] age, 52 [10] years), after correction for multiple testing, rs2070951 in the NR3C2 gene was significantly associated with cCSC (odds ratio, 1.29; 95% CI, 1.08-1.53; P = .004). Moreover, the GA haplotype of single-nucleotide polymorphisms rs2070951 and rs5522 in NR3C2 conferred risk for cCSC (odds ratio, 1.39; 95% CI, 1.15-1.68; P = .004), whereas the CA haplotype decreased risk for cCSC (odds ratio, 0.72; 95% CI, 0.60-0.87; P < .001). Three known variants in NR3C1 that alter the activity of the glucocorticoid receptor (rs56149945, rs41423247, and rs6198) were not associated with cCSC. Conclusions and Relevance: In this study, the variant rs2070951 and the GA haplotype in NR3C2 were associated with an increased risk for cCSC. Results of this genetic study support a possible role for the mineralocorticoid receptor in the pathogenesis of cCSC. Since these haplotypes have previously been associated with perceived stress, this study provides a clue to bridging clinical risk factors for cCSC to underlying genetic associations.

Published
2017

50. An amino acid motif in HLA-DRβ1 distinguishes patients with uveitis in juvenile idiopathic arthritis

Author

Sara L. Pulit, Nicoline E. Schalij-Delfos, Nico M Wulffraat, Arnd Heiligenhaus, Sanne Hiddingh, Marco W. Schilham, Carine Wouters, Petra C E Hissink Muller, Dirk Föll, Timothy R D J Radstake, Esther P A H Hoppenreijs, Rotraud K. Saurenmann, Jonas J.W. Kuiper, Roel A. Ophoff, Marion A J van Rossum, Anneke I. den Hollander, Kirsten Minden, Anne-Mieke J. W. Haasnoot, Sylvia Kamphuis, Joke H. de Boer, T H C M Reinards, and Rebecca ten Cate

Subjects
musculoskeletal diseases, Linkage disequilibrium, biology, business.industry, Arthritis, Peptide binding, Human leukocyte antigen, medicine.disease, Major histocompatibility complex, immune system diseases, Immunology, medicine, biology.protein, Genetic predisposition, business, skin and connective tissue diseases, HLA-DRB1, Uveitis
Abstract

Objectives: Uveitis is a visually-debilitating disorder that affects up to 30% of children with the most common forms of juvenile idiopathic arthritis (JIA). The disease mechanisms predisposing only a subgroup of children to uveitis are unknown. To identify genetic susceptibility loci for uveitis in JIA, we conducted a genome-wide association study totalling 522 JIA cases. Methods: Two cohorts of JIA patients with ophthalmological follow-up were separately genotyped and then imputed using a genome-wide imputation reference panel, and an HLA-specific reference panel used for imputing amino acids and HLA types in the major histocompatibility complex (MHC). After imputation, we performed genome-wide and MHC-specific analyses. We used a reverse immunology approach to model antigen presentation at 13 common HLA-DRB1 allotypes. Results: We identified the amino acid serine at position 11 (serine-11) in HLA-DRB1 as associated to increased risk of uveitis (OR = 2.60, p = 5.43 x 10 -10 ). We found the serine-11 signal to be specific to females (p females = 7.61 x 10 -10 , p males = 0.18). Serine-11 resides in the YST-motif in the peptide binding groove of the HLA-DRB1 protein; all three amino acids are in perfect linkage disequilibrium and show identical association to disease. Quantitative prediction of binding affinity revealed that discernable peptide-binding preferences distinguish HLA-DRB1 allotypes with the YST-motif. Conclusion: Our findings highlight a genetically distinct, sexually-dimorphic feature of JIA-uveitis compared to JIA without uveitis in HLA-DRB1. The association indicates the potential involvement for antigen presentation by HLA-DRB1 in the development of uveitis in JIA.

Published
2017
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