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295 results on '"Wiggs, JL"'

1. Hypothesis-independent pathway analysis implicates GABA and Acetyl-CoA metabolism in primary open-angle glaucoma and normal-pressure glaucoma

Author: Bailey, JNC, Yaspan, BL, Pasquale, LR, Hauser, MA, Kang, JH, Loomis, SJ, Brilliant, M, Budenz, DL, Christen, WG, Fingert, J, Gaasterland, D, Gaasterland, T, Kraft, P, Lee, RK, Lichter, PR, Liu, Y, McCarty, CA, Moroi, SE, Richards, JE, Realini, T, Schuman, JS, Scott, WK, Singh, K, Sit, AJ, Vollrath, D, Wollstein, G, Zack, DJ, Zhang, K, Pericak-Vance, MA, Allingham, RR, Weinreb, RN, Haines, JL, and Wiggs, JL
Subjects: Genetics & Heredity, Genetics, Complementary and Alternative Medicine, Paediatrics and Reproductive Medicine
Abstract: Primary open-angle glaucoma (POAG) is a leading cause of blindness worldwide. Using genome-wide association single-nucleotide polymorphism data from the Glaucoma Genes and Environment study and National Eye Institute Glaucoma Human Genetics Collaboration comprising 3,108 cases and 3,430 controls, we assessed biologic pathways as annotated in the KEGG database for association with risk of POAG. After correction for genic overlap among pathways, we found 4 pathways, butanoate metabolism (hsa00650), hematopoietic cell lineage (hsa04640), lysine degradation (hsa00310) and basal transcription factors (hsa03022) related to POAG with permuted p
Published: 2014

2. Vascular tone pathway polymorphisms in relation to primary open-angle glaucoma

Author: Kang, JH, Loomis, SJ, Yaspan, BL, Bailey, JC, Weinreb, RN, Lee, RK, Lichter, PR, Budenz, DL, Liu, Y, Realini, T, Gaasterland, D, Gaasterland, T, Friedman, DS, McCarty, CA, Moroi, SE, Olson, L, Schuman, JS, Singh, K, Vollrath, D, Wollstein, G, Zack, DJ, Brilliant, M, Sit, AJ, Christen, WG, Fingert, J, Forman, JP, Buys, ES, Kraft, P, Zhang, K, Allingham, RR, Pericak-Vance, MA, Richards, JE, Hauser, MA, Haines, JL, Wiggs, JL, and Pasquale, LR
Subjects: Biomedical and Clinical Sciences, Ophthalmology and Optometry, Aging, Neurosciences, Genetics, Eye Disease and Disorders of Vision, Neurodegenerative, Clinical Research, Cardiovascular, AMP-Activated Protein Kinases, Aged, Case-Control Studies, Caveolin 1, Dynamin II, Dynamins, Endothelium, Vascular, Female, GTP-Binding Proteins, Genetic Predisposition to Disease, Genotype, Glaucoma, Open-Angle, Humans, Inositol 1, 4, 5-Trisphosphate Receptors, Intraocular Pressure, Male, Middle Aged, Muscle, Smooth, Vascular, Nitric Oxide Synthase Type III, Polymorphism, Single Nucleotide, Receptor, Endothelin B, Receptors, Endothelin, Signal Transduction, Clinical Sciences, Immunology, Opthalmology and Optometry, Ophthalmology & Optometry, Ophthalmology and optometry
Abstract: AimsVascular perfusion may be impaired in primary open-angle glaucoma (POAG); thus, we evaluated a panel of markers in vascular tone-regulating genes in relation to POAG.MethodsWe used Illumina 660W-Quad array genotype data and pooled P-values from 3108 POAG cases and 3430 controls from the combined National Eye Institute Glaucoma Human Genetics Collaboration consortium and Glaucoma Genes and Environment studies. Using information from previous literature and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, we compiled single-nucleotide polymorphisms (SNPs) in 186 vascular tone-regulating genes. We used the 'Pathway Analysis by Randomization Incorporating Structure' analysis software, which performed 1000 permutations to compare the overall pathway and selected genes with comparable randomly generated pathways and genes in their association with POAG.ResultsThe vascular tone pathway was not associated with POAG overall or POAG subtypes, defined by the type of visual field loss (early paracentral loss (n=224 cases) or only peripheral loss (n=993 cases)) (permuted P≥0.20). In gene-based analyses, eight were associated with POAG overall at permuted P
Published: 2014

3. Thin minimal rim width at Bruch’s membrane opening is associated with glaucomatous paracentral visual field loss

Author: Taniguchi EV, Paschalis EI, Li D, Nouri-Mahdavi K, Brauner SC, Greenstein SH, Turalba AV, Wiggs JL, Pasquale LR, and Shen LQ
Subjects: Paracentral Loss, BMO-MRW, Open Angle Glaucoma, Optic Nerve Damage, Swept-Source OCT, Ophthalmology, RE1-994
Abstract: Elise V Taniguchi,1–3 Eleftherios I Paschalis,1,2 Dejiao Li,1,4 Kouros Nouri-Mahdavi,5 Stacey C Brauner,1 Scott H Greenstein,1 Angela V Turalba,1 Janey L Wiggs,1 Louis R Pasquale,1,6 Lucy Q Shen1 1Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear, Boston, MA, 2Boston Keratoprosthesis Laboratory, Massachusetts Eye and Ear – Schepens Eye Research Institute, Harvard Medical School, Boston, MA, USA; 3Department of Ophthalmology, Universidade Federal de São Paulo, São Paulo, Brazil; 4Department of Ophthalmology, Beijing China-Japan Friendship Hospital, Beijing, People’s Republic of China; 5Department of Ophthalmology, David Geffen School of Medicine and Stein Eye Institute, Los Angeles, CA, USA; 6Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA Purpose: To compare optic nerve head (ONH) measurements in glaucomatous eyes with paracentral visual field (VF) loss to eyes with peripheral VF loss and controls.Methods: Open-angle glaucoma (OAG) patients with early paracentral VF loss or isolated peripheral VF loss as well as control subjects underwent ONH imaging with swept-source optical coherence tomography (OCT) and retinal nerve fiber layer (RNFL) imaging with spectral-domain OCT. Minimum rim width at Bruch’s membrane opening (BMO-MRW), lamina cribrosa depth (LCD), and RNFL thickness were compared among the glaucoma and control groups with one-way analysis of variance, Kruskal–Wallis test, and multiple regression analysis.Results: Twenty-nine eyes from 29 OAG patients (15 early paracentral and 14 isolated peripheral VF loss) and 20 eyes of 20 control subjects were included. The early paracentral and isolated peripheral VF loss groups had similar VF mean deviation (MD) (–5.3±2.7 dB and –3.7±3.0 dB, p=0.15, respectively). Global BMO-MRW was lower in OAG eyes than in controls (193.8±40.0 vs 322.7±62.2 µm, p0.99). In contrast, the minimal BMO-MRW was lower in eyes with early paracentral loss (69.0±33.6 µm) than in eyes with isolated peripheral loss (107.7±40.2 µm; p=0.03) or control eyes (200.1±40.8 µm; p
Published: 2017

4. The Association between Serum Lipids and Intraocular Pressure in 2 Large United Kingdom Cohorts.

Author: Madjedi, KM, Stuart, KV, Chua, SYL, Luben, RN, Warwick, A, Pasquale, LR, Kang, JH, Wiggs, JL, Lentjes, MAH, Aschard, H, Sattar, N, Foster, PJ, Khawaja, AP, Modifiable Risk Factors for Glaucoma Collaboration and the UK Biobank Eye and Vision Consortium, Madjedi, KM, Stuart, KV, Chua, SYL, Luben, RN, Warwick, A, Pasquale, LR, Kang, JH, Wiggs, JL, Lentjes, MAH, Aschard, H, Sattar, N, Foster, PJ, Khawaja, AP, and Modifiable Risk Factors for Glaucoma Collaboration and the UK Biobank Eye and Vision Consortium
Abstract: PURPOSE: Serum lipids are modifiable, routinely collected blood test features associated with cardiovascular health. We examined the association of commonly collected serum lipid measures (total cholesterol [TC], high-density lipoprotein cholesterol [HDL-C], low-density lipoprotein cholesterol [LDL-C], and triglycerides) with intraocular pressure (IOP). DESIGN: Cross-sectional study in the UK Biobank and European Prospective Investigation into Cancer and Nutrition (EPIC)-Norfolk cohorts. PARTICIPANTS: We included 94 323 participants from the UK Biobank (mean age, 57 years) and 6230 participants from the EPIC-Norfolk (mean age, 68 years) cohorts with data on TC, HDL-C, LDL-C, and triglycerides collected between 2006 and 2009. METHODS: Multivariate linear regression adjusting for demographic, lifestyle, anthropometric, medical, and ophthalmic covariables was used to examine the associations of serum lipids with corneal-compensated IOP (IOPcc). MAIN OUTCOME MEASURES: Corneal-compensated IOP. RESULTS: Higher levels of TC, HDL-C, and LDL-C were associated independently with higher IOPcc in both cohorts after adjustment for key demographic, medical, and lifestyle factors. For each 1-standard deviation increase in TC, HDL-C, and LDL-C, IOPcc was higher by 0.09 mmHg (95% confidence interval [CI], 0.06-0.11 mmHg; P < 0.001), 0.11 mmHg (95% CI, 0.08-0.13 mmHg; P < 0.001), and 0.07 mmHg (95% CI, 0.05-0.09 mmHg; P < 0.001), respectively, in the UK Biobank cohort. In the EPIC-Norfolk cohort, each 1-standard deviation increase in TC, HDL-C, and LDL-C was associated with a higher IOPcc by 0.19 mmHg (95% CI, 0.07-0.31 mmHg; P = 0.001), 0.14 mmHg (95% CI, 0.03-0.25 mmHg; P = 0.016), and 0.17 mmHg (95% CI, 0.06-0.29 mmHg; P = 0.003). An inverse association between triglyceride levels and IOP in the UK Biobank (-0.05 mmHg; 95% CI, -0.08 to -0.03; P < 0.001) was not replicated in the EPIC-Norfolk cohort (P = 0.30). CONCLUSIONS: Our findings suggest that serum TC, HDL-C, and LDL-C are a
Published: 2022

5. Thrombospondin 1 missense alleles induce extracellular matrix protein aggregation and TM dysfunction in congenital glaucoma

Author: Fu, H, Siggs, OM, Knight, LSW, Staffieri, SE, Ruddle, JB, Birsner, AE, Collantes, ER, Craig, JE, Wiggs, JL, D'Amato, RJ, Fu, H, Siggs, OM, Knight, LSW, Staffieri, SE, Ruddle, JB, Birsner, AE, Collantes, ER, Craig, JE, Wiggs, JL, and D'Amato, RJ
Abstract: Glaucoma is a highly heritable disease that is a leading cause of blindness worldwide. Here, we identified heterozygous thrombospondin 1 (THBS1) missense alleles altering p.Arg1034, a highly evolutionarily conserved amino acid, in 3 unrelated and ethnically diverse families affected by congenital glaucoma, a severe form of glaucoma affecting children. Thbs1R1034C-mutant mice had elevated intraocular pressure (IOP), reduced ocular fluid outflow, and retinal ganglion cell loss. Histology revealed an abundant, abnormal extracellular accumulation of THBS1 with abnormal morphology of juxtacanalicular trabecular meshwork (TM), an ocular tissue critical for aqueous fluid outflow. Functional characterization showed that the THBS1 missense alleles found in affected individuals destabilized the THBS1 C-terminus, causing protein misfolding and extracellular aggregation. Analysis using a range of amino acid substitutions at position R1034 showed that the extent of aggregation was correlated with the change in protein-folding free energy caused by variations in amino acid structure. Extracellular matrix (ECM) proteins, especially fibronectin, which bind to THBS1, also accumulated within THBS1 deposits. These results show that missense variants altering THBS1 p.Arg1034 can cause elevated IOP through a mechanism involving impaired TM fluid outflow in association with accumulation of aggregated THBS1 in the ECM of juxtacanalicular meshwork with altered morphology.
Published: 2022

6. Genetic variation affects morphological retinal phenotypes extracted from UK Biobank optical coherence tomography images

Author: Hauser, MA, Currant, H, Hysi, P, Fitzgerald, TW, Gharahkhani, P, Bonnemaijer, PWM, Senabouth, A, Hewitt, AW, Atan, D, Aung, T, Charng, J, Choquet, H, Craig, J, Khaw, PT, Klaver, CCW, Kubo, M, Ong, J-S, Pasquale, LR, Reisman, CA, Daniszewski, M, Powell, JE, Pebay, A, Simcoe, MJ, Thiadens, AAHJ, van Duijn, CM, Yazar, S, Jorgenson, E, MacGregor, S, Hammond, CJ, Mackey, DA, Wiggs, JL, Foster, PJ, Patel, PJ, Birney, E, Khawaja, AP, Hauser, MA, Currant, H, Hysi, P, Fitzgerald, TW, Gharahkhani, P, Bonnemaijer, PWM, Senabouth, A, Hewitt, AW, Atan, D, Aung, T, Charng, J, Choquet, H, Craig, J, Khaw, PT, Klaver, CCW, Kubo, M, Ong, J-S, Pasquale, LR, Reisman, CA, Daniszewski, M, Powell, JE, Pebay, A, Simcoe, MJ, Thiadens, AAHJ, van Duijn, CM, Yazar, S, Jorgenson, E, MacGregor, S, Hammond, CJ, Mackey, DA, Wiggs, JL, Foster, PJ, Patel, PJ, Birney, E, and Khawaja, AP
Abstract: Optical Coherence Tomography (OCT) enables non-invasive imaging of the retina and is used to diagnose and manage ophthalmic diseases including glaucoma. We present the first large-scale genome-wide association study of inner retinal morphology using phenotypes derived from OCT images of 31,434 UK Biobank participants. We identify 46 loci associated with thickness of the retinal nerve fibre layer or ganglion cell inner plexiform layer. Only one of these loci has been associated with glaucoma, and despite its clear role as a biomarker for the disease, Mendelian randomisation does not support inner retinal thickness being on the same genetic causal pathway as glaucoma. We extracted overall retinal thickness at the fovea, representative of foveal hypoplasia, with which three of the 46 SNPs were associated. We additionally associate these three loci with visual acuity. In contrast to the Mendelian causes of severe foveal hypoplasia, our results suggest a spectrum of foveal hypoplasia, in part genetically determined, with consequences on visual function.
Published: 2021

7. Exome-based investigation of the genetic basis of human pigmentary glaucoma

Author: van der Heide, C, Goar, W, Meyer, KJ, Alward, WLM, Boese, EA, Sears, NC, Roos, BR, Kwon, YH, DeLuca, AP, Siggs, OM, Gonzaga-Jauregui, C, Sheffield, VC, Wang, K, Stone, EM, Mullins, RF, Anderson, MG, Fan, BJ, Ritch, R, Craig, JE, Wiggs, JL, Scheetz, TE, Fingert, JH, van der Heide, C, Goar, W, Meyer, KJ, Alward, WLM, Boese, EA, Sears, NC, Roos, BR, Kwon, YH, DeLuca, AP, Siggs, OM, Gonzaga-Jauregui, C, Sheffield, VC, Wang, K, Stone, EM, Mullins, RF, Anderson, MG, Fan, BJ, Ritch, R, Craig, JE, Wiggs, JL, Scheetz, TE, and Fingert, JH
Abstract: BACKGROUND: Glaucoma is a leading cause of visual disability and blindness. Release of iris pigment within the eye, pigment dispersion syndrome (PDS), can lead to one type of glaucoma known as pigmentary glaucoma. PDS has a genetic component, however, the genes involved with this condition are largely unknown. We sought to discover genes that cause PDS by testing cohorts of patients and controls for mutations using a tiered analysis of exome data. RESULTS: Our primary analysis evaluated melanosome-related genes that cause dispersion of iris pigment in mice (TYRP1, GPNMB, LYST, DCT, and MITF). We identified rare mutations, but they were not statistically enriched in PDS patients. Our secondary analyses examined PMEL (previously linked with PDS), MRAP, and 19 other genes. Four MRAP mutations were identified in PDS cases but not in controls (p = 0.016). Immunohistochemical analysis of human donor eyes revealed abundant MRAP protein in the iris, the source of pigment in PDS. However, analysis of MRAP in additional cohorts (415 cases and 1645 controls) did not support an association with PDS. We also did not confirm a link between PMEL and PDS in our cohorts due to lack of reported mutations and similar frequency of the variants in PDS patients as in control subjects. CONCLUSIONS: We did not detect a statistical enrichment of mutations in melanosome-related genes in human PDS patients and we found conflicting data about the likely pathogenicity of MRAP mutations. PDS may have a complex genetic basis that is not easily unraveled with exome analyses.
Published: 2021

8. Genetic variation affects morphological retinal phenotypes extracted from UK Biobank optical coherence tomography images (vol 17, e1009497, 2021)

Author: Currant, H, Hysi, P, Fitzgerald, TW, Gharahkhani, P, Bonnemaijer, PWM, Senabouth, A, Hewitt, AW, Atan, D, Aung, T, Charng, J, Choquet, H, Craig, J, Khaw, PT, Klaver, CCW, Kubo, M, Ong, J-S, Pasquale, LR, Reisman, CA, Daniszewski, M, Powell, JE, Pebay, A, Simcoe, MJ, Thiadens, AAHJ, van Duijn, CM, Yazar, S, Jorgenson, E, MacGregor, S, Hammond, CJ, Mackey, DA, Wiggs, JL, Foster, PJ, Patel, PJ, Birney, E, Khawaja, AP, Currant, H, Hysi, P, Fitzgerald, TW, Gharahkhani, P, Bonnemaijer, PWM, Senabouth, A, Hewitt, AW, Atan, D, Aung, T, Charng, J, Choquet, H, Craig, J, Khaw, PT, Klaver, CCW, Kubo, M, Ong, J-S, Pasquale, LR, Reisman, CA, Daniszewski, M, Powell, JE, Pebay, A, Simcoe, MJ, Thiadens, AAHJ, van Duijn, CM, Yazar, S, Jorgenson, E, MacGregor, S, Hammond, CJ, Mackey, DA, Wiggs, JL, Foster, PJ, Patel, PJ, Birney, E, and Khawaja, AP
Abstract: [This corrects the article DOI: 10.1371/journal.pgen.1009497.].
Published: 2021

9. Genome-wide meta-analysis identifies 127 open-angle glaucoma loci with consistent effect across ancestries

Author: Gharahkhani, P, Jorgenson, E, Hysi, P, Khawaja, AP, Pendergrass, S, Han, X, Ong, JS, Hewitt, AW, Segre, A, Rouhana, JM, Hamel, AR, Igo, RP, Choquet, H, Qassim, A, Josyula, NS, Bailey, JNC, Bonnemaijer, PWM, Iglesias, A, Siggs, OM, Young, TL, Vitart, V, Thiadens, AAHJ, Karjalainen, J, Uebe, S, Melles, RB, Nair, KS, Luben, R, Simcoe, M, Amersinghe, N, Cree, AJ, Hohn, R, Poplawski, A, Chen, LJ, Rong, S-S, Aung, T, Vithana, EN, Tamiya, G, Shiga, Y, Yamamoto, M, Nakazawa, T, Currant, H, Birney, E, Wang, X, Auton, A, Lupton, MK, Martin, NG, Ashaye, A, Olawoye, O, Williams, SE, Akafo, S, Ramsay, M, Hashimoto, K, Kamatani, Y, Akiyama, M, Momozawa, Y, Foster, PJ, Khaw, PT, Morgan, JE, Strouthidis, NG, Kraft, P, Kang, JH, Pang, CP, Pasutto, F, Mitchell, P, Lotery, AJ, Palotie, A, van Duijn, C, Haines, JL, Hammond, C, Pasquale, LR, Klaver, CCW, Hauser, M, Khor, CC, Mackey, DA, Kubo, M, Cheng, C-Y, Craig, JE, MacGregor, S, Wiggs, JL, Gharahkhani, P, Jorgenson, E, Hysi, P, Khawaja, AP, Pendergrass, S, Han, X, Ong, JS, Hewitt, AW, Segre, A, Rouhana, JM, Hamel, AR, Igo, RP, Choquet, H, Qassim, A, Josyula, NS, Bailey, JNC, Bonnemaijer, PWM, Iglesias, A, Siggs, OM, Young, TL, Vitart, V, Thiadens, AAHJ, Karjalainen, J, Uebe, S, Melles, RB, Nair, KS, Luben, R, Simcoe, M, Amersinghe, N, Cree, AJ, Hohn, R, Poplawski, A, Chen, LJ, Rong, S-S, Aung, T, Vithana, EN, Tamiya, G, Shiga, Y, Yamamoto, M, Nakazawa, T, Currant, H, Birney, E, Wang, X, Auton, A, Lupton, MK, Martin, NG, Ashaye, A, Olawoye, O, Williams, SE, Akafo, S, Ramsay, M, Hashimoto, K, Kamatani, Y, Akiyama, M, Momozawa, Y, Foster, PJ, Khaw, PT, Morgan, JE, Strouthidis, NG, Kraft, P, Kang, JH, Pang, CP, Pasutto, F, Mitchell, P, Lotery, AJ, Palotie, A, van Duijn, C, Haines, JL, Hammond, C, Pasquale, LR, Klaver, CCW, Hauser, M, Khor, CC, Mackey, DA, Kubo, M, Cheng, C-Y, Craig, JE, MacGregor, S, and Wiggs, JL
Abstract: Primary open-angle glaucoma (POAG), is a heritable common cause of blindness world-wide. To identify risk loci, we conduct a large multi-ethnic meta-analysis of genome-wide association studies on a total of 34,179 cases and 349,321 controls, identifying 44 previously unreported risk loci and confirming 83 loci that were previously known. The majority of loci have broadly consistent effects across European, Asian and African ancestries. Cross-ancestry data improve fine-mapping of causal variants for several loci. Integration of multiple lines of genetic evidence support the functional relevance of the identified POAG risk loci and highlight potential contributions of several genes to POAG pathogenesis, including SVEP1, RERE, VCAM1, ZNF638, CLIC5, SLC2A12, YAP1, MXRA5, and SMAD6. Several drug compounds targeting POAG risk genes may be potential glaucoma therapeutic candidates.
Published: 2021

10. Multitrait analysis of glaucoma identifies new risk loci and enables polygenic prediction of disease susceptibility and progression

Author: Craig, JE, Han, X, Qassim, A, Hassall, M, Bailey, JNC, Kinzy, TG, Khawaja, AP, An, J, Marshall, H, Gharahkhani, P, Igo, RP, Graham, SL, Healey, PR, Ong, J-S, Zhou, T, Siggs, O, Law, MH, Souzeau, E, Ridge, B, Hysi, PG, Burdon, KP, Mills, RA, Landers, J, Ruddle, JB, Agar, A, Galanopoulos, A, White, AJR, Willoughby, CE, Andrew, NH, Best, S, Vincent, AL, Goldberg, I, Radford-Smith, G, Martin, NG, Montgomery, GW, Vitart, V, Hoehn, R, Wojciechowski, R, Jonas, JB, Aung, T, Pasquale, LR, Cree, AJ, Sivaprasad, S, Vallabh, NA, Viswanathan, AC, Pasutto, F, Haines, JL, Klaver, CCW, van Duijn, CM, Casson, RJ, Foster, PJ, Khaw, PT, Hammond, CJ, Mackey, DA, Mitchell, P, Lotery, AJ, Wiggs, JL, Hewitt, AW, MacGregor, S, Craig, JE, Han, X, Qassim, A, Hassall, M, Bailey, JNC, Kinzy, TG, Khawaja, AP, An, J, Marshall, H, Gharahkhani, P, Igo, RP, Graham, SL, Healey, PR, Ong, J-S, Zhou, T, Siggs, O, Law, MH, Souzeau, E, Ridge, B, Hysi, PG, Burdon, KP, Mills, RA, Landers, J, Ruddle, JB, Agar, A, Galanopoulos, A, White, AJR, Willoughby, CE, Andrew, NH, Best, S, Vincent, AL, Goldberg, I, Radford-Smith, G, Martin, NG, Montgomery, GW, Vitart, V, Hoehn, R, Wojciechowski, R, Jonas, JB, Aung, T, Pasquale, LR, Cree, AJ, Sivaprasad, S, Vallabh, NA, Viswanathan, AC, Pasutto, F, Haines, JL, Klaver, CCW, van Duijn, CM, Casson, RJ, Foster, PJ, Khaw, PT, Hammond, CJ, Mackey, DA, Mitchell, P, Lotery, AJ, Wiggs, JL, Hewitt, AW, and MacGregor, S
Abstract: Glaucoma, a disease characterized by progressive optic nerve degeneration, can be prevented through timely diagnosis and treatment. We characterize optic nerve photographs of 67,040 UK Biobank participants and use a multitrait genetic model to identify risk loci for glaucoma. A glaucoma polygenic risk score (PRS) enables effective risk stratification in unselected glaucoma cases and modifies penetrance of the MYOC variant encoding p.Gln368Ter, the most common glaucoma-associated myocilin variant. In the unselected glaucoma population, individuals in the top PRS decile reach an absolute risk for glaucoma 10 years earlier than the bottom decile and are at 15-fold increased risk of developing advanced glaucoma (top 10% versus remaining 90%, odds ratio = 4.20). The PRS predicts glaucoma progression in prospectively monitored, early manifest glaucoma cases (P = 0.004) and surgical intervention in advanced disease (P = 3.6 × 10-6). This glaucoma PRS will facilitate the development of a personalized approach for earlier treatment of high-risk individuals, with less intensive monitoring and treatment being possible for lower-risk groups.
Published: 2020

11. Author Correction: Cross-ancestry genome-wide association analysis of corneal thickness strengthens link between complex and Mendelian eye diseases

Author: Iglesias, AI, Mishra, A, Vitart, V, Bykhovskaya, Y, Hoehn, R, Springelkamp, H, Cuellar-Partida, G, Gharahkhani, P, Bailey, JNC, Willoughby, CE, Li, X, Yazar, S, Nag, A, Khawaja, AP, Polasek, O, Siscovick, D, Mitchell, P, Tham, YC, Haines, JL, Kearns, LS, Hayward, C, Shi, Y, van Leeuwen, EM, Taylor, KD, Bonnemaijer, P, Rotter, JI, Martin, NG, Zeller, T, Mills, RA, Souzeau, E, Staffieri, SE, Jonas, JB, Schmidtmann, I, Boutin, T, Kang, JH, Lucas, SEM, Wong, TY, Beutel, ME, Wilson, JF, Uitterlinden, AG, Vithana, EN, Foster, PJ, Hysi, PG, Hewitt, AW, Khor, CC, Pasquale, LR, Montgomery, GW, Klaver, CCW, Aung, T, Pfeiffer, N, Mackey, DA, Hammond, CJ, Cheng, C-Y, Craig, JE, Rabinowitz, YS, Wiggs, JL, Burdon, KP, van Duijn, CM, MacGregor, S, Wang, JJ, Rochtchina, E, Attia, J, Scott, R, Holliday, EG, Baird, PN, Xie, J, Inouye, M, Viswanathan, A, Sim, X, Allingham, RR, Brilliant, MH, Budenz, DL, Christen, WG, Fingert, J, Friedman, DS, Gaasterland, D, Gaasterland, T, Hauser, MA, Kraft, P, Lee, RK, Lichter, PR, Liu, Y, Loomis, SJ, Moroi, SE, Pericak-Vance, MA, Realini, A, Richards, JE, Schuman, JS, Scott, WK, Singh, K, Sit, AJ, Vollrath, D, Weinreb, RN, Wollstein, G, Zack, DJ, Zhang, K, Donnelly, P, Barroso, I, Blackwell, JM, Bramon, E, Brown, MA, Casas, JP, Corvin, A, Deloukas, P, Duncanson, A, Jankowski, J, Markus, HS, Mathew, CG, Palmer, CNA, Plomin, R, Rautanen, A, Sawcer, SJ, Trembath, RC, Wood, NW, Spencer, CCA, Band, G, Bellenguez, C, Freeman, C, Hellenthal, G, Giannoulatou, E, Pirinen, M, Pearson, R, Strange, A, Su, Z, Vukcevic, D, Langford, C, Hunt, SE, Edkins, S, Gwilliam, R, Blackburn, H, Bumpstead, SJ, Dronov, S, Gillman, M, Gray, E, Hammond, N, Jayakumar, A, McCann, OT, Liddle, J, Potter, SC, Ravindrarajah, R, Ricketts, M, Waller, M, Weston, P, Widaa, S, Whittaker, P, Grp, BMES-G, Consortium, N, and Control, WTC
Subjects: Lumican, genetic structures, Fibrillin-1, General Physics and Astronomy, Gene Expression, Q1, Corneal Diseases, Marfan Syndrome, Cornea, ADAMTS Proteins, Myopia, Link (knot theory), lcsh:Science, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Corneal Dystrophies, Hereditary, Multidisciplinary, Eye Diseases, Hereditary, symbols, NEIGHBORHOOD consortium, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Proteoglycans, Decorin, Glaucoma, Open-Angle, Science, Quantitative Trait Loci, Computational biology, Biology, Keratoconus, Polymorphism, Single Nucleotide, General Biochemistry, Genetics and Molecular Biology, White People, Article, symbols.namesake, Transforming Growth Factor beta2, Quantitative Trait, Heritable, Asian People, Genome-Wide Association Analysis, Humans, Author Correction, Eye Disease and Disorders of Vision, Loeys-Dietz Syndrome, Genome, Human, Wellcome Trust Case Control Consortium 2, Blue Mountains Eye Study - GWAS group, General Chemistry, Mendelian Randomization Analysis, R1, eye diseases, Mendelian inheritance, Ehlers-Danlos Syndrome, lcsh:Q, sense organs, Genome-Wide Association Study
Abstract: Central corneal thickness (CCT) is a highly heritable trait associated with complex eye diseases such as keratoconus and glaucoma. We perform a genome-wide association meta-analysis of CCT and identify 19 novel regions. In addition to adding support for known connective tissue-related pathways, pathway analyses uncover previously unreported gene sets. Remarkably, >20% of the CCT-loci are near or within Mendelian disorder genes. These included FBN1, ADAMTS2 and TGFB2 which associate with connective tissue disorders (Marfan, Ehlers-Danlos and Loeys-Dietz syndromes), and the LUM-DCN-KERA gene complex involved in myopia, corneal dystrophies and cornea plana. Using index CCT-increasing variants, we find a significant inverse correlation in effect sizes between CCT and keratoconus (r = −0.62, P = 5.30 × 10−5) but not between CCT and primary open-angle glaucoma (r = −0.17, P = 0.2). Our findings provide evidence for shared genetic influences between CCT and keratoconus, and implicate candidate genes acting in collagen and extracellular matrix regulation., Reduced central corneal thickness (CCT) is observed in common eye diseases as well as in rare Mendelian disorders. Here, in a cross-ancestry GWAS, the authors identify 19 novel genetic loci associated with CCT, a subset of which is involved in rare corneal or connective tissue disorders.
Published: 2019

12. Multi-trait genome-wide association study identifies new loci associated with optic disc parameters

Author: Bonnemaijer, PWM, van Leeuwen, EM, Iglesias, AI, Gharahkhani, P, Vitart, V, Khawaja, AP, Simcoe, M, Hoehn, R, Cree, AJ, Igo, RP, Burdon, KP, Craig, JE, Hewitt, AW, Jonas, J, Khor, C-C, Pasutto, F, Mackey, DA, Mitchell, P, Mishra, A, Pang, C, Pasquale, LR, Springelkamp, H, Thorleifsson, G, Thorsteinsdottir, U, Viswanathan, AC, Wojciechowski, R, Wong, T, Young, TL, Zeller, T, Atan, D, Aslam, T, Barman, SA, Barrett, JH, Bishop, P, Blows, P, Bunce, C, Carare, RO, Chakravarthy, U, Chan, M, Chua, SYL, Crabb, DP, Cumberland, PM, Day, A, Desai, P, Dhillon, B, Dick, AD, Egan, C, Ennis, S, Foster, P, Fruttiger, M, Gallacher, JEJ, Garway, DF, Gibson, J, Gore, D, Guggenheim, JA, Hardcastle, A, Harding, SP, Hogg, RE, Keane, PA, Khaw, PT, Lascaratos, G, Macgillivray, T, Mackie, S, Martin, K, McGaughey, M, McGuinness, B, Mckay, GJ, McKibbin, M, Mitry, D, Moore, T, Morgan, JE, Muthy, ZA, O'Sullivan, E, Owen, CG, Patel, P, Paterson, E, Peto, T, Petzold, A, Rahi, JS, Rudnikca, AR, Self, J, Sivaprasad, S, Steel, D, Stratton, I, Strouthidis, N, Sudlow, C, Thomas, D, Trucco, E, Tufail, A, Vernon, SA, Williams, C, Williams, K, Woodside, JV, Yates, MM, Yip, J, Zheng, Y, Allingham, R, Budenz, D, Bailey, JC, Fingert, J, Gaasterland, D, Gaasterland, T, Haines, JL, Hark, L, Hauser, M, Kang, JH, Kraft, P, Lee, R, Lichter, P, Liu, Y, Moroi, S, Pericak, M, Realini, A, Rhee, D, Richards, JR, Ritch, R, Scott, WK, Singh, K, Sit, A, Vollrath, D, Weinreb, R, Wollstein, G, Wilmer, DZ, Gerhold-Ay, A, Nickels, S, Wilson, JF, Hayward, C, Boutin, TS, Polasek, O, Aung, T, Khor, CC, Amin, N, Lotery, AJ, Wiggs, JL, Cheng, C-Y, Hysi, PG, Hammond, CJ, Thiadens, AAHJ, MacGregor, S, Klaver, CCW, van Duijn, CM, Bonnemaijer, PWM, van Leeuwen, EM, Iglesias, AI, Gharahkhani, P, Vitart, V, Khawaja, AP, Simcoe, M, Hoehn, R, Cree, AJ, Igo, RP, Burdon, KP, Craig, JE, Hewitt, AW, Jonas, J, Khor, C-C, Pasutto, F, Mackey, DA, Mitchell, P, Mishra, A, Pang, C, Pasquale, LR, Springelkamp, H, Thorleifsson, G, Thorsteinsdottir, U, Viswanathan, AC, Wojciechowski, R, Wong, T, Young, TL, Zeller, T, Atan, D, Aslam, T, Barman, SA, Barrett, JH, Bishop, P, Blows, P, Bunce, C, Carare, RO, Chakravarthy, U, Chan, M, Chua, SYL, Crabb, DP, Cumberland, PM, Day, A, Desai, P, Dhillon, B, Dick, AD, Egan, C, Ennis, S, Foster, P, Fruttiger, M, Gallacher, JEJ, Garway, DF, Gibson, J, Gore, D, Guggenheim, JA, Hardcastle, A, Harding, SP, Hogg, RE, Keane, PA, Khaw, PT, Lascaratos, G, Macgillivray, T, Mackie, S, Martin, K, McGaughey, M, McGuinness, B, Mckay, GJ, McKibbin, M, Mitry, D, Moore, T, Morgan, JE, Muthy, ZA, O'Sullivan, E, Owen, CG, Patel, P, Paterson, E, Peto, T, Petzold, A, Rahi, JS, Rudnikca, AR, Self, J, Sivaprasad, S, Steel, D, Stratton, I, Strouthidis, N, Sudlow, C, Thomas, D, Trucco, E, Tufail, A, Vernon, SA, Williams, C, Williams, K, Woodside, JV, Yates, MM, Yip, J, Zheng, Y, Allingham, R, Budenz, D, Bailey, JC, Fingert, J, Gaasterland, D, Gaasterland, T, Haines, JL, Hark, L, Hauser, M, Kang, JH, Kraft, P, Lee, R, Lichter, P, Liu, Y, Moroi, S, Pericak, M, Realini, A, Rhee, D, Richards, JR, Ritch, R, Scott, WK, Singh, K, Sit, A, Vollrath, D, Weinreb, R, Wollstein, G, Wilmer, DZ, Gerhold-Ay, A, Nickels, S, Wilson, JF, Hayward, C, Boutin, TS, Polasek, O, Aung, T, Khor, CC, Amin, N, Lotery, AJ, Wiggs, JL, Cheng, C-Y, Hysi, PG, Hammond, CJ, Thiadens, AAHJ, MacGregor, S, Klaver, CCW, and van Duijn, CM
Abstract: A new avenue of mining published genome-wide association studies includes the joint analysis of related traits. The power of this approach depends on the genetic correlation of traits, which reflects the number of pleiotropic loci, i.e. genetic loci influencing multiple traits. Here, we applied new meta-analyses of optic nerve head (ONH) related traits implicated in primary open-angle glaucoma (POAG); intraocular pressure and central corneal thickness using Haplotype reference consortium imputations. We performed a multi-trait analysis of ONH parameters cup area, disc area and vertical cup-disc ratio. We uncover new variants; rs11158547 in PPP1R36-PLEKHG3 and rs1028727 near SERPINE3 at genome-wide significance that replicate in independent Asian cohorts imputed to 1000 Genomes. At this point, validation of these variants in POAG cohorts is hampered by the high degree of heterogeneity. Our results show that multi-trait analysis is a valid approach to identify novel pleiotropic variants for ONH.
Published: 2019

13. Cross-ancestry genome-wide association analysis of corneal thickness strengthens link between complex and Mendelian eye diseases (vol 9, 1864, 2018)

Author: Iglesias, AI, Mishra, A, Vitart, V, Bykhovskaya, Y, Hoehn, R, Springelkamp, H, Cuellar-Partida, G, Gharahkhani, P, Bailey, JNC, Willoughby, CE, Li, X, Yazar, S, Nag, A, Khawaja, AP, Polasek, O, Siscovick, D, Mitchell, P, Tham, YC, Haines, JL, Kearns, LS, Hayward, C, Shi, Y, van Leeuwen, EM, Taylor, KD, Bonnemaijer, P, Rotter, JI, Martin, NG, Zeller, T, Mills, RA, Souzeau, E, Staffieri, SE, Jonas, JB, Schmidtmann, I, Boutin, T, Kang, JH, Lucas, SEM, Wong, TY, Beutel, ME, Wilson, JF, Uitterlinden, AG, Vithana, EN, Foster, PJ, Hysi, PG, Hewitt, AW, Khor, CC, Pasquale, LR, Montgomery, GW, Klaver, CCW, Aung, T, Pfeiffer, N, Mackey, DA, Hammond, CJ, Cheng, C-Y, Craig, JE, Rabinowitz, YS, Wiggs, JL, Burdon, KP, van Duijn, CM, MacGregor, S, Wang, JJ, Rochtchina, E, Attia, J, Scott, R, Holliday, EG, Baird, PN, Xie, J, Inouye, M, Viswanathan, A, Sim, X, Allingham, RR, Brilliant, MH, Budenz, DL, Christen, WG, Fingert, J, Friedman, DS, Gaasterland, D, Gaasterland, T, Hauser, MA, Kraft, P, Lee, RK, Lichter, PR, Liu, Y, Loomis, SJ, Moroi, SE, Pericak-Vance, MA, Realini, A, Richards, JE, Schuman, JS, Scott, WK, Singh, K, Sit, AJ, Vollrath, D, Weinreb, RN, Wollstein, G, Zack, DJ, Zhang, K, Donnelly, P, Barroso, I, Blackwell, JM, Bramon, E, Brown, MA, Casas, JP, Corvin, A, Deloukas, P, Duncanson, A, Jankowski, J, Markus, HS, Mathew, CG, Palmer, CNA, Plomin, R, Rautanen, A, Sawcer, SJ, Trembath, RC, Wood, NW, Spencer, CCA, Band, G, Bellenguez, C, Freeman, C, Hellenthal, G, Giannoulatou, E, Pirinen, M, Pearson, R, Strange, A, Su, Z, Vukcevic, D, Langford, C, Hunt, SE, Edkins, S, Gwilliam, R, Blackburn, H, Bumpstead, SJ, Dronov, S, Gillman, M, Gray, E, Hammond, N, Jayakumar, A, McCann, OT, Liddle, J, Potter, SC, Ravindrarajah, R, Ricketts, M, Waller, M, Weston, P, Widaa, S, Whittaker, P, Iglesias, AI, Mishra, A, Vitart, V, Bykhovskaya, Y, Hoehn, R, Springelkamp, H, Cuellar-Partida, G, Gharahkhani, P, Bailey, JNC, Willoughby, CE, Li, X, Yazar, S, Nag, A, Khawaja, AP, Polasek, O, Siscovick, D, Mitchell, P, Tham, YC, Haines, JL, Kearns, LS, Hayward, C, Shi, Y, van Leeuwen, EM, Taylor, KD, Bonnemaijer, P, Rotter, JI, Martin, NG, Zeller, T, Mills, RA, Souzeau, E, Staffieri, SE, Jonas, JB, Schmidtmann, I, Boutin, T, Kang, JH, Lucas, SEM, Wong, TY, Beutel, ME, Wilson, JF, Uitterlinden, AG, Vithana, EN, Foster, PJ, Hysi, PG, Hewitt, AW, Khor, CC, Pasquale, LR, Montgomery, GW, Klaver, CCW, Aung, T, Pfeiffer, N, Mackey, DA, Hammond, CJ, Cheng, C-Y, Craig, JE, Rabinowitz, YS, Wiggs, JL, Burdon, KP, van Duijn, CM, MacGregor, S, Wang, JJ, Rochtchina, E, Attia, J, Scott, R, Holliday, EG, Baird, PN, Xie, J, Inouye, M, Viswanathan, A, Sim, X, Allingham, RR, Brilliant, MH, Budenz, DL, Christen, WG, Fingert, J, Friedman, DS, Gaasterland, D, Gaasterland, T, Hauser, MA, Kraft, P, Lee, RK, Lichter, PR, Liu, Y, Loomis, SJ, Moroi, SE, Pericak-Vance, MA, Realini, A, Richards, JE, Schuman, JS, Scott, WK, Singh, K, Sit, AJ, Vollrath, D, Weinreb, RN, Wollstein, G, Zack, DJ, Zhang, K, Donnelly, P, Barroso, I, Blackwell, JM, Bramon, E, Brown, MA, Casas, JP, Corvin, A, Deloukas, P, Duncanson, A, Jankowski, J, Markus, HS, Mathew, CG, Palmer, CNA, Plomin, R, Rautanen, A, Sawcer, SJ, Trembath, RC, Wood, NW, Spencer, CCA, Band, G, Bellenguez, C, Freeman, C, Hellenthal, G, Giannoulatou, E, Pirinen, M, Pearson, R, Strange, A, Su, Z, Vukcevic, D, Langford, C, Hunt, SE, Edkins, S, Gwilliam, R, Blackburn, H, Bumpstead, SJ, Dronov, S, Gillman, M, Gray, E, Hammond, N, Jayakumar, A, McCann, OT, Liddle, J, Potter, SC, Ravindrarajah, R, Ricketts, M, Waller, M, Weston, P, Widaa, S, and Whittaker, P
Abstract: Emmanuelle Souzeau, who contributed to analysis of data, was inadvertently omitted from the author list in the originally published version of this Article. This has now been corrected in both the PDF and HTML versions of the Article.
Published: 2019

14. Testosterone Pathway Genetic Polymorphisms in Relation to Primary Open-Angle Glaucoma: analysis in Two Large Datasets

Author: Bailey, JNC, Gharahkhani, P, Kang, JH, Butkiewicz, M, Sullivan, DA, Weinreb, RN, Aschard, H, Allingham, RR, Ashley-Koch, A, Lee, RK, Moroi, SE, Brilliant, MH, Wollstein, G, Schuman, JS, Fingert, JH, Budenz, DL, Realini, T, Gaasterland, T, Scott, WK, Singh, K, Sit, AJ, Igo, RP, Song, YE, Hark, L, Ritch, R, Rhee, DJ, Vollrath, D, Zack, DJ, Medeiros, F, Vajaranant, TS, Chasman, DI, Christen, WG, Pericak-Vance, MA, Liu, Y, Kraft, P, Richards, JE, Rosner, BA, Hauser, MA, Craig, JE, Burdon, KP, Hewitt, AW, Mackey, DA, Haines, JL, MacGregor, S, Wiggs, JL, Pasquale, LR, Bailey, JNC, Gharahkhani, P, Kang, JH, Butkiewicz, M, Sullivan, DA, Weinreb, RN, Aschard, H, Allingham, RR, Ashley-Koch, A, Lee, RK, Moroi, SE, Brilliant, MH, Wollstein, G, Schuman, JS, Fingert, JH, Budenz, DL, Realini, T, Gaasterland, T, Scott, WK, Singh, K, Sit, AJ, Igo, RP, Song, YE, Hark, L, Ritch, R, Rhee, DJ, Vollrath, D, Zack, DJ, Medeiros, F, Vajaranant, TS, Chasman, DI, Christen, WG, Pericak-Vance, MA, Liu, Y, Kraft, P, Richards, JE, Rosner, BA, Hauser, MA, Craig, JE, Burdon, KP, Hewitt, AW, Mackey, DA, Haines, JL, MacGregor, S, Wiggs, JL, and Pasquale, LR
Abstract: PURPOSE: Sex hormones may be associated with primary open-angle glaucoma (POAG), although the mechanisms are unclear. We previously observed that gene variants involved with estrogen metabolism were collectively associated with POAG in women but not men; here we assessed gene variants related to testosterone metabolism collectively and POAG risk. METHODS: We used two datasets: one from the United States (3853 cases and 33,480 controls) and another from Australia (1155 cases and 1992 controls). Both datasets contained densely called genotypes imputed to the 1000 Genomes reference panel. We used pathway- and gene-based approaches with Pathway Analysis by Randomization Incorporating Structure (PARIS) software to assess the overall association between a panel of single nucleotide polymorphisms (SNPs) in testosterone metabolism genes and POAG. In sex-stratified analyses, we evaluated POAG overall and POAG subtypes defined by maximum IOP (high-tension [HTG] or normal tension glaucoma [NTG]). RESULTS: In the US dataset, the SNP panel was not associated with POAG (permuted P = 0.77), although there was an association in the Australian sample (permuted P = 0.018). In both datasets, the SNP panel was associated with POAG in men (permuted P ≤ 0.033) and not women (permuted P ≥ 0.42), but in gene-based analyses, there was no consistency on the main genes responsible for these findings. In both datasets, the testosterone pathway association with HTG was significant (permuted P ≤ 0.011), but again, gene-based analyses showed no consistent driver gene associations. CONCLUSIONS: Collectively, testosterone metabolism pathway SNPs were consistently associated with the high-tension subtype of POAG in two datasets.
Published: 2018

15. Genomic locus modulating corneal thickness in the mouse identifies POU6F2 as a potential risk of developing glaucoma

Author: Anderson, MG, King, R, Struebing, FL, Li, Y, Wang, J, Koch, AA, Bailey, JNC, Gharahkhani, P, MacGregor, S, Allingham, RR, Hauser, MA, Wiggs, JL, Geiser, EE, Anderson, MG, King, R, Struebing, FL, Li, Y, Wang, J, Koch, AA, Bailey, JNC, Gharahkhani, P, MacGregor, S, Allingham, RR, Hauser, MA, Wiggs, JL, and Geiser, EE
Abstract: Central corneal thickness (CCT) is one of the most heritable ocular traits and it is also a phenotypic risk factor for primary open angle glaucoma (POAG). The present study uses the BXD Recombinant Inbred (RI) strains to identify novel quantitative trait loci (QTLs) modulating CCT in the mouse with the potential of identifying a molecular link between CCT and risk of developing POAG. The BXD RI strain set was used to define mammalian genomic loci modulating CCT, with a total of 818 corneas measured from 61 BXD RI strains (between 60-100 days of age). The mice were anesthetized and the eyes were positioned in front of the lens of the Phoenix Micron IV Image-Guided OCT system or the Bioptigen OCT system. CCT data for each strain was averaged and used to QTLs modulating this phenotype using the bioinformatics tools on GeneNetwork (www.genenetwork.org). The candidate genes and genomic loci identified in the mouse were then directly compared with the summary data from a human POAG genome wide association study (NEIGHBORHOOD) to determine if any genomic elements modulating mouse CCT are also risk factors for POAG.This analysis revealed one significant QTL on Chr 13 and a suggestive QTL on Chr 7. The significant locus on Chr 13 (13 to 19 Mb) was examined further to define candidate genes modulating this eye phenotype. For the Chr 13 QTL in the mouse, only one gene in the region (Pou6f2) contained nonsynonymous SNPs. Of these five nonsynonymous SNPs in Pou6f2, two resulted in changes in the amino acid proline which could result in altered secondary structure affecting protein function. The 7 Mb region under the mouse Chr 13 peak distributes over 2 chromosomes in the human: Chr 1 and Chr 7. These genomic loci were examined in the NEIGHBORHOOD database to determine if they are potential risk factors for human glaucoma identified using meta-data from human GWAS. The top 50 hits all resided within one gene (POU6F2), with the highest significance level of p = 10-6 for SNP rs7631
Published: 2018

16. Cross-ancestry genome-wide association analysis of corneal thickness strengthens link between complex and Mendelian eye diseases

Author: Iglesias, AI, Mishra, A, Vitart, V, Bykhovskaya, Y, Hoehn, R, Springelkamp, H, Cuellar-Partida, G, Gharahkhani, P, Bailey, JNC, Willoughby, CE, Li, X, Yazar, S, Nag, A, Khawaja, AP, Polasek, O, Siscovick, D, Mitchell, P, Tham, YC, Haines, JL, Kearns, LS, Hayward, C, Shi, Y, van Leeuwen, EM, Taylor, KD, Bonnemaijer, P, Rotter, JI, Martin, NG, Zeller, T, Mills, RA, Staffieri, SE, Jonas, JB, Schmidtmann, I, Boutin, T, Kang, JH, Lucas, SEM, Wong, TY, Beutel, ME, Wilson, JF, Uitterlinden, AG, Vithana, EN, Foster, PJ, Hysi, PG, Hewitt, AW, Khor, CC, Pasquale, LR, Montgomery, GW, Klaver, CCW, Aung, T, Pfeiffer, N, Mackey, DA, Hammond, CJ, Cheng, C-Y, Craig, JE, Rabinowitz, YS, Wiggs, JL, Burdon, KP, van Duijn, CM, MacGregor, S, Iglesias, AI, Mishra, A, Vitart, V, Bykhovskaya, Y, Hoehn, R, Springelkamp, H, Cuellar-Partida, G, Gharahkhani, P, Bailey, JNC, Willoughby, CE, Li, X, Yazar, S, Nag, A, Khawaja, AP, Polasek, O, Siscovick, D, Mitchell, P, Tham, YC, Haines, JL, Kearns, LS, Hayward, C, Shi, Y, van Leeuwen, EM, Taylor, KD, Bonnemaijer, P, Rotter, JI, Martin, NG, Zeller, T, Mills, RA, Staffieri, SE, Jonas, JB, Schmidtmann, I, Boutin, T, Kang, JH, Lucas, SEM, Wong, TY, Beutel, ME, Wilson, JF, Uitterlinden, AG, Vithana, EN, Foster, PJ, Hysi, PG, Hewitt, AW, Khor, CC, Pasquale, LR, Montgomery, GW, Klaver, CCW, Aung, T, Pfeiffer, N, Mackey, DA, Hammond, CJ, Cheng, C-Y, Craig, JE, Rabinowitz, YS, Wiggs, JL, Burdon, KP, van Duijn, CM, and MacGregor, S
Abstract: Central corneal thickness (CCT) is a highly heritable trait associated with complex eye diseases such as keratoconus and glaucoma. We perform a genome-wide association meta-analysis of CCT and identify 19 novel regions. In addition to adding support for known connective tissue-related pathways, pathway analyses uncover previously unreported gene sets. Remarkably, >20% of the CCT-loci are near or within Mendelian disorder genes. These included FBN1, ADAMTS2 and TGFB2 which associate with connective tissue disorders (Marfan, Ehlers-Danlos and Loeys-Dietz syndromes), and the LUM-DCN-KERA gene complex involved in myopia, corneal dystrophies and cornea plana. Using index CCT-increasing variants, we find a significant inverse correlation in effect sizes between CCT and keratoconus (r = -0.62, P = 5.30 × 10-5) but not between CCT and primary open-angle glaucoma (r = -0.17, P = 0.2). Our findings provide evidence for shared genetic influences between CCT and keratoconus, and implicate candidate genes acting in collagen and extracellular matrix regulation.
Published: 2018

17. Analysis combining correlated glaucoma traits identifies five new risk loci for open-angle glaucoma

Author: Gharahkhani, P, Burdon, KP, Bailey, JNC, Hewitt, AW, Law, MH, Pasquale, LR, Kang, JH, Haines, JL, Souzeau, E, Zhou, T, Siggs, OM, Landers, J, Awadalla, M, Sharma, S, Mills, RA, Ridge, B, Lynn, D, Casson, R, Graham, SL, Goldberg, I, White, A, Healey, PR, Grigg, J, Lawlor, M, Mitchell, P, Ruddle, J, Coote, M, Walland, M, Best, S, Vincent, A, Gale, J, RadfordSmith, G, Whiteman, DC, Montgomery, GW, Martin, NG, Mackey, DA, Wiggs, JL, MacGregor, S, Craig, JE, Gharahkhani, P, Burdon, KP, Bailey, JNC, Hewitt, AW, Law, MH, Pasquale, LR, Kang, JH, Haines, JL, Souzeau, E, Zhou, T, Siggs, OM, Landers, J, Awadalla, M, Sharma, S, Mills, RA, Ridge, B, Lynn, D, Casson, R, Graham, SL, Goldberg, I, White, A, Healey, PR, Grigg, J, Lawlor, M, Mitchell, P, Ruddle, J, Coote, M, Walland, M, Best, S, Vincent, A, Gale, J, RadfordSmith, G, Whiteman, DC, Montgomery, GW, Martin, NG, Mackey, DA, Wiggs, JL, MacGregor, S, and Craig, JE
Abstract: Open-angle glaucoma (OAG) is a major cause of blindness worldwide. To identify new risk loci for OAG, we performed a genome-wide association study in 3,071 OAG cases and 6,750 unscreened controls, and meta-analysed the results with GWAS data for intraocular pressure (IOP) and optic disc parameters (the overall meta-analysis sample size varying between 32,000 to 48,000 participants), which are glaucoma-related traits. We identified and independently validated four novel genome-wide significant associations within or near MYOF and CYP26A1, LINC02052 and CRYGS, LMX1B, and LMO7 using single variant tests, one additional locus (C9) using gene-based tests, and two genetic pathways - "response to fluid shear stress" and "abnormal retina morphology" - in pathway-based tests. Interestingly, some of the new risk loci contribute to risk of other genetically-correlated eye diseases including myopia and age-related macular degeneration. To our knowledge, this study is the first integrative study to combine genetic data from OAG and its correlated traits to identify new risk variants and genetic pathways, highlighting the future potential of combining genetic data from genetically-correlated eye traits for the purpose of gene discovery and mapping.
Published: 2018

18. Genome-wide association study of primary open-angle glaucoma in continental and admixed African populations

Author: Bonnemaijer, Pieter, Iglesias Gonzalez, Adriana, Nadkarni, GN, Sanyiwa, AJ, Hassan, HG, Cook, C, Simcoe, M, Taylor, KD, Schurmann, C, Belbin, GM, Kenny, EE, Bottinger, EP, van de Laar, S, Wiliams, SEI, Akafo, SK, Ashaye, AO, Zangwill, LM, Girkin, CA, Ng, MCY, Rotter, JI, Weinreb, RN, Li, Z, Allingham, RR, Nag, A, Hysi, PG, Meester - Smoor, Magda, Wiggs, JL, Hauser, MA, Hammond, CJ, Lemij, HG, Loos, RJF, Duijn, Cornelia, Thiadens, Alberta, Klaver, Caroline, Bonnemaijer, Pieter, Iglesias Gonzalez, Adriana, Nadkarni, GN, Sanyiwa, AJ, Hassan, HG, Cook, C, Simcoe, M, Taylor, KD, Schurmann, C, Belbin, GM, Kenny, EE, Bottinger, EP, van de Laar, S, Wiliams, SEI, Akafo, SK, Ashaye, AO, Zangwill, LM, Girkin, CA, Ng, MCY, Rotter, JI, Weinreb, RN, Li, Z, Allingham, RR, Nag, A, Hysi, PG, Meester - Smoor, Magda, Wiggs, JL, Hauser, MA, Hammond, CJ, Lemij, HG, Loos, RJF, Duijn, Cornelia, Thiadens, Alberta, and Klaver, Caroline
Published: 2018

19. Cross-ancestry genome-wide association analysis of corneal thickness strengthens link between complex and Mendelian eye diseases

Author: Iglesias Gonzalez, Adriana, Mishra, A, Vitart, V, Bykhovskaya, Y, Hohn, R, Springelkamp, Henriët, Cuellar-Partida, G, Gharahkhani, P, Bailey, JNC, Willoughby, CE, Li, XH, Yazar, S, Nag, A, Khawaja, AP, Polasek, O, Siscovick, D, Mitchell, P, Tham, YC, Haines, JL, Kearns, LS, Hayward, C, Shi, Y, Leeuwen, Elisa, Taylor, KD, Bonnemaijer, Pieter, Rotter, JI, Martin, NG, Zeller, T, Mills, RA, Staffieri, SE, Jonas, JB, Schmidtmann, I, Boutin, T, Kang, JH, Lucas, SEM, Wong, TY, Beutel, ME, Wilson, JF, Uitterlinden, André, Vithana, EN, Foster, PJ, Hysi, PG, Hewitt, AW, Khor, CC, Pasquale, LR, Montgomery, GW, Klaver, Caroline, Aung, T, Pfeiffer, N, Mackey, DA, Hammond, CJ, Cheng, CY (Ching-Yu), Craig, JE, Rabinowitz, YS, Wiggs, JL, Burdon, KP, Duijn, Cornelia, Macgregor, S, Iglesias Gonzalez, Adriana, Mishra, A, Vitart, V, Bykhovskaya, Y, Hohn, R, Springelkamp, Henriët, Cuellar-Partida, G, Gharahkhani, P, Bailey, JNC, Willoughby, CE, Li, XH, Yazar, S, Nag, A, Khawaja, AP, Polasek, O, Siscovick, D, Mitchell, P, Tham, YC, Haines, JL, Kearns, LS, Hayward, C, Shi, Y, Leeuwen, Elisa, Taylor, KD, Bonnemaijer, Pieter, Rotter, JI, Martin, NG, Zeller, T, Mills, RA, Staffieri, SE, Jonas, JB, Schmidtmann, I, Boutin, T, Kang, JH, Lucas, SEM, Wong, TY, Beutel, ME, Wilson, JF, Uitterlinden, André, Vithana, EN, Foster, PJ, Hysi, PG, Hewitt, AW, Khor, CC, Pasquale, LR, Montgomery, GW, Klaver, Caroline, Aung, T, Pfeiffer, N, Mackey, DA, Hammond, CJ, Cheng, CY (Ching-Yu), Craig, JE, Rabinowitz, YS, Wiggs, JL, Burdon, KP, Duijn, Cornelia, and Macgregor, S
Published: 2018

20. Angiopoietin-1 is required for Schlemm's canal development in mice and humans

Author: Thomson, BR, Souma, T, Tompson, SW, Onay, T, Kizhatil, K, Siggs, OM, Feng, L, Whisenhunt, KN, Yanovitch, TL, Kalaydjieva, L, Azmanov, DN, Finzi, S, Tanna, CE, Hewitt, AW, Mackey, DA, Bradfield, YS, Souzeau, E, Javadiyan, S, Wiggs, JL, Pasutto, F, Liu, X, John, SWM, Craig, JE, Jin, J, Young, TL, Quaggin, SE, Thomson, BR, Souma, T, Tompson, SW, Onay, T, Kizhatil, K, Siggs, OM, Feng, L, Whisenhunt, KN, Yanovitch, TL, Kalaydjieva, L, Azmanov, DN, Finzi, S, Tanna, CE, Hewitt, AW, Mackey, DA, Bradfield, YS, Souzeau, E, Javadiyan, S, Wiggs, JL, Pasutto, F, Liu, X, John, SWM, Craig, JE, Jin, J, Young, TL, and Quaggin, SE
Abstract: Primary congenital glaucoma (PCG) is a leading cause of blindness in children worldwide and is caused by developmental defects in 2 aqueous humor outflow structures, Schlemm's canal (SC) and the trabecular meshwork. We previously identified loss-of-function mutations in the angiopoietin (ANGPT) receptor TEK in families with PCG and showed that ANGPT/TEK signaling is essential for SC development. Here, we describe roles for the major ANGPT ligands in the development of the aqueous outflow pathway. We determined that ANGPT1 is essential for SC development, and that Angpt1-knockout mice form a severely hypomorphic canal with elevated intraocular pressure. By contrast, ANGPT2 was dispensable, although mice deficient in both Angpt1 and Angpt2 completely lacked SC, indicating that ANGPT2 compensates for the loss of ANGPT1. In addition, we identified 3 human subjects with rare ANGPT1 variants within an international cohort of 284 PCG patients. Loss of function in 2 of the 3 patient alleles was observed by functional analysis of ANGPT1 variants in a combined in silico, in vitro, and in vivo approach, supporting a causative role for ANGPT1 in disease. By linking ANGPT1 with PCG, these results highlight the importance of ANGPT/TEK signaling in glaucoma pathogenesis and identify a candidate target for therapeutic development.
Published: 2017

21. Systems genetics identifies a role for Cacna2d1 Uregulation in elevated intraocular pressure and glaucoma susceptibility

Author: Chintalapudi, SR, Maria, D, Wang, XD, Bailey, JNC, Hysi, PG, Wiggs, JL, Williams, RW, Jablonski, MM, Chintalapudi, SR, Maria, D, Wang, XD, Bailey, JNC, Hysi, PG, Wiggs, JL, Williams, RW, and Jablonski, MM
Abstract: Glaucoma is a multi-factorial blinding disease in which genetic factors play an important role. Elevated intraocular pressure is a highly heritable risk factor for primary open angle glaucoma and currently the only target for glaucoma therapy. Our study helps to better understand underlying genetic and molecular mechanisms that regulate intraocular pressure, and identifies a new candidate gene, Cacna2d1, that modulates intraocular pressure and a promising therapeutic, pregabalin, which binds to CACNA2D1 protein and lowers intraocular pressure significantly. Because our study utilizes a genetically diverse population of mice with known sequence variants, we are able to determine that the intraocular pressure-lowering effect of pregabalin is dependent on the Cacna2d1 haplotype. Using human genome-wide association study (GWAS) data, evidence for association of a CACNA2D1 single-nucleotide polymorphism and primary open angle glaucoma is found. Importantly, these results demonstrate that our systems genetics approach represents an efficient method to identify genetic variation that can guide the selection of therapeutic targets.
Published: 2017

22. New insights into the genetics of primary open-angle glaucoma based on meta-analyses of intraocular pressure and optic disc characteristics

Author: Springelkamp, Henriët, Iglesias Gonzalez, Adriana, Mishra, A, Hohn, R, Wojciechowski, R, Khawaja, AP, Nag, A, Wang, YX, Wang, JJ, Cuellar-Partida, G, Gibson, J, Bailey, JNC, Vithana, EN, Gharahkhani, P, Boutin, T, Ramdas, Wishal, Zeller, T, Luben, RN, Yonova-Doing, E, Viswanathan, AC, Yazar, S, Cree, AJ, Haines, JL, Koh, JY, Souzeau, E, Wilson, JF, Amin, Najaf, Muller, C, Venturini, C, Kearns, LS, Kang, JH, Tham, YC, Zhou, T, van Leeuwen, EM, Nickels, S, Sanfilippo, P, Liao, JM, van der Linde, HC, Zhao, WT, Koolwijk, Leonieke, Zheng, L, Rivadeneira, Fernando, Baskaran, M, van der Lee, Sven, Perera, S, Jong, P, Oostra, Ben, Uitterlinden, André, Fan, Q, Hofman, Bert, Tai, ES, Vingerling, Hans, Sim, XL, Wolfs, R.C.W., Teo, YY, Lemij, HG, Khor, CC, Willemsen, Rob, Lackner, KJ, Aung, T, Jansonius, NM, Montgomery, G, Wild, PS, Young, TL, Burdon, KP, Hysi, PG, Pasquale, LR, Wong, TY, Klaver, Caroline, Hewitt, AW, Jonas, JB, Mitchell, P, Lotery, AJ, Foster, PJ, Vitart, V, Pfeiffer, N, Craig, JE, Mackey, DA, Hammond, CJ, Wiggs, JL, Cheng, CY (Ching-Yu), Duijn, Cornelia, Macgregor, S, Springelkamp, Henriët, Iglesias Gonzalez, Adriana, Mishra, A, Hohn, R, Wojciechowski, R, Khawaja, AP, Nag, A, Wang, YX, Wang, JJ, Cuellar-Partida, G, Gibson, J, Bailey, JNC, Vithana, EN, Gharahkhani, P, Boutin, T, Ramdas, Wishal, Zeller, T, Luben, RN, Yonova-Doing, E, Viswanathan, AC, Yazar, S, Cree, AJ, Haines, JL, Koh, JY, Souzeau, E, Wilson, JF, Amin, Najaf, Muller, C, Venturini, C, Kearns, LS, Kang, JH, Tham, YC, Zhou, T, van Leeuwen, EM, Nickels, S, Sanfilippo, P, Liao, JM, van der Linde, HC, Zhao, WT, Koolwijk, Leonieke, Zheng, L, Rivadeneira, Fernando, Baskaran, M, van der Lee, Sven, Perera, S, Jong, P, Oostra, Ben, Uitterlinden, André, Fan, Q, Hofman, Bert, Tai, ES, Vingerling, Hans, Sim, XL, Wolfs, R.C.W., Teo, YY, Lemij, HG, Khor, CC, Willemsen, Rob, Lackner, KJ, Aung, T, Jansonius, NM, Montgomery, G, Wild, PS, Young, TL, Burdon, KP, Hysi, PG, Pasquale, LR, Wong, TY, Klaver, Caroline, Hewitt, AW, Jonas, JB, Mitchell, P, Lotery, AJ, Foster, PJ, Vitart, V, Pfeiffer, N, Craig, JE, Mackey, DA, Hammond, CJ, Wiggs, JL, Cheng, CY (Ching-Yu), Duijn, Cornelia, and Macgregor, S
Published: 2017

23. Meta-analysis of Genome-Wide Association Studies Identifies Novel Loci Associated With Optic Disc Morphology

Author: Springelkamp, H, Mishra, A, Hysi, PG, Gharahkhani, P, Höhn, R, Khor, CC, Cooke Bailey, JN, Luo, X, Ramdas, WD, Vithana, E, Koh, V, Yazar, S, Xu, L, Forward, H, Kearns, LS, Amin, N, Iglesias, AI, Sim, KS, van Leeuwen, EM, Demirkan, A, van der Lee, S, Loon, SC, Rivadeneira, F, Nag, A, Sanfilippo, PG, Schillert, A, de Jong, PTVM, Oostra, BA, Uitterlinden, AG, Hofman, A, Zhou, T, Burdon, KP, Spector, TD, Lackner, KJ, Saw, SM, Vingerling, JR, Teo, YY, Pasquale, LR, Wolfs, RCW, Lemij, HG, Tai, ES, Jonas, JB, Cheng, CY, Aung, T, Jansonius, NM, Klaver, CCW, Craig, JE, Young, TL, Haines, JL, Macgregor, S, Mackey, DA, Pfeiffer, N, Wong, TY, Wiggs, JL, Hewitt, AW, van Duijn, CM, Hammond, CJ, Allingham, RR, Brilliant, MH, Budenz, DL, Bailey, JNC, Christen, WG, and Fingert, J
Subjects: genetic structures, sense organs, eye diseases
Abstract: © 2015 Wiley Periodicals, Inc. Primary open-angle glaucoma is the most common optic neuropathy and an important cause of irreversible blindness worldwide. The optic nerve head or optic disc is divided in two parts: a central cup (without nerve fibers) surrounded by the neuroretinal rim (containing axons of the retinal ganglion cells). The International Glaucoma Genetics Consortium conducted a meta-analysis of genome-wide association studies consisting of 17,248 individuals of European ancestry and 6,841 individuals of Asian ancestry. The outcomes of the genome-wide association studies were disc area and cup area. These specific measurements describe optic nerve morphology in another way than the vertical cup-disc ratio, which is a clinically used measurement, and may shed light on new glaucoma mechanisms. We identified 10 new loci associated with disc area (CDC42BPA, F5, DIRC3, RARB, ABI3BP, DCAF4L2, ELP4, TMTC2, NR2F2, and HORMAD2) and another 10 new loci associated with cup area (DHRS3, TRIB2, EFEMP1, FLNB, FAM101, DDHD1, ASB7, KPNB1, BCAS3, and TRIOBP). The new genes participate in a number of pathways and future work is likely to identify more functions related to the pathogenesis of glaucoma.
Published: 2015

24. Genome-wide association analysis identifies TXNRD2, ATXN2 and FOXC1 as susceptibility loci for primary open-angle glaucoma

Author: Bailey, JNC, Loomis, SJ, Kang, JH, Allingham, RR, Gharahkhani, P, Khor, CC, Burdon, KP, Aschard, H, Chasman, DI, Igo, RP, Hysi, PG, Glastonbury, CA, Ashley-Koch, A, Brilliant, M, Brown, AA, Budenz, DL, Buil, A, Cheng, C-Y, Choi, H, Christen, WG, Curhan, G, De Vivo, I, Fingert, JH, Foster, PJ, Fuchs, C, Gaasterland, D, Gaasterland, T, Hewitt, AW, Hu, F, Hunter, DJ, Khawaja, AP, Lee, RK, Li, Z, Lichter, PR, Mackey, DA, McGuffin, P, Mitchell, P, Moroi, SE, Perera, SA, Pepper, KW, Qi, Q, Realini, T, Richards, JE, Ridker, PM, Rimm, E, Ritch, R, Ritchie, M, Schuman, JS, Scott, WK, Singh, K, Sit, AJ, Song, YE, Tamimi, RM, Topouzis, F, Viswanathan, AC, Verma, SS, Vollrath, D, Wang, JJ, Weisschuh, N, Wissinger, B, Wollstein, G, Wong, TY, Yaspan, BL, Zack, DJ, Zhang, K, Weinreb, RN, Pericak-Vance, MA, Small, K, Hammond, CJ, Aung, T, Liu, Y, Vithana, EN, MacGregor, S, Craig, JE, Kraftl, P, Howell, G, Hauser, MA, Pasguale, LR, Haines, JL, Wiggs, JL, Bailey, JNC, Loomis, SJ, Kang, JH, Allingham, RR, Gharahkhani, P, Khor, CC, Burdon, KP, Aschard, H, Chasman, DI, Igo, RP, Hysi, PG, Glastonbury, CA, Ashley-Koch, A, Brilliant, M, Brown, AA, Budenz, DL, Buil, A, Cheng, C-Y, Choi, H, Christen, WG, Curhan, G, De Vivo, I, Fingert, JH, Foster, PJ, Fuchs, C, Gaasterland, D, Gaasterland, T, Hewitt, AW, Hu, F, Hunter, DJ, Khawaja, AP, Lee, RK, Li, Z, Lichter, PR, Mackey, DA, McGuffin, P, Mitchell, P, Moroi, SE, Perera, SA, Pepper, KW, Qi, Q, Realini, T, Richards, JE, Ridker, PM, Rimm, E, Ritch, R, Ritchie, M, Schuman, JS, Scott, WK, Singh, K, Sit, AJ, Song, YE, Tamimi, RM, Topouzis, F, Viswanathan, AC, Verma, SS, Vollrath, D, Wang, JJ, Weisschuh, N, Wissinger, B, Wollstein, G, Wong, TY, Yaspan, BL, Zack, DJ, Zhang, K, Weinreb, RN, Pericak-Vance, MA, Small, K, Hammond, CJ, Aung, T, Liu, Y, Vithana, EN, MacGregor, S, Craig, JE, Kraftl, P, Howell, G, Hauser, MA, Pasguale, LR, Haines, JL, and Wiggs, JL
Abstract: Primary open-angle glaucoma (POAG) is a leading cause of blindness worldwide. To identify new susceptibility loci, we performed meta-analysis on genome-wide association study (GWAS) results from eight independent studies from the United States (3,853 cases and 33,480 controls) and investigated the most significantly associated SNPs in two Australian studies (1,252 cases and 2,592 controls), three European studies (875 cases and 4,107 controls) and a Singaporean Chinese study (1,037 cases and 2,543 controls). A meta-analysis of the top SNPs identified three new associated loci: rs35934224[T] in TXNRD2 (odds ratio (OR) = 0.78, P = 4.05 × 10(-11)) encoding a mitochondrial protein required for redox homeostasis; rs7137828[T] in ATXN2 (OR = 1.17, P = 8.73 × 10(-10)); and rs2745572[A] upstream of FOXC1 (OR = 1.17, P = 1.76 × 10(-10)). Using RT-PCR and immunohistochemistry, we show TXNRD2 and ATXN2 expression in retinal ganglion cells and the optic nerve head. These results identify new pathways underlying POAG susceptibility and suggest new targets for preventative therapies.
Published: 2016

25. Challenges in elucidating the genetics of diabetic retinopathy

Author: Kuo, JZ, Wong, TY, Rotter, JI, and Wiggs, JL
Abstract: Importance: In the past decade, significant progress in genomic medicine and technologic developments has revolutionized our approach to common complex disorders in many areas of medicine, including ophthalmology. A disorder that still needs major genetic progress is diabetic retinopathy (DR), one of the leading causes of blindness in adults. Objective: To perform a literature review, present the current findings, and highlight some key challenges in DR genetics. Design, setting, and participants: We performed a thorough literature review of the genetic factors for DR, including heritability scores, twin studies, family studies, candidate gene studies, linkage studies, and genome-wide association studies (GWASs). Main outcome measures: Environmental and genetic factors for DR. Results: Although there is clear demonstration of a genetic contribution in the development and progression of DR, the identification of susceptibility loci through candidate gene approaches, linkage studies, and GWASs is still in its infancy. The greatest obstacles remain a lack of power because of small sample size of available studies and a lack of phenotype standardization. Conclusions and relevance: The field of DR genetics is still in its infancy and is a challenge because of the complexity of the disease. This review outlines some strategies and lessons for future investigation to improve our understanding of this complex genetic disorder. Copyright © 2014 American Medical Association.
Published: 2014

26. A common variant near TGFBR3 is associated with primary open angle glaucoma

Author: Li, Z, Allingham, RR, Nakano, M, Jia, L, Chen, Y, Ikeda, Y, Mani, B, Chen, L-J, Kee, C, Garway-Heath, DF, Sripriya, S, Fuse, N, Abu-Amero, KK, Huang, C, Namburi, P, Burdon, K, Perera, SA, Gharahkhani, P, Lin, Y, Ueno, M, Ozaki, M, Mizoguchi, T, Krishnadas, SR, Osman, EA, Lee, MC, Chan, ASY, Tajudin, L-SA, Do, T, Goncalves, A, Reynier, P, Zhang, H, Bourne, R, Goh, D, Broadway, D, Husain, R, Negi, AK, Su, DH, Ho, C-L, Blanco, AA, Leung, CKS, Wong, TT, Yakub, A, Liu, Y, Nongpiur, ME, Han, JC, Hon, DN, Shantha, B, Zhao, B, Sang, J, Zhang, N, Sato, R, Yoshii, K, Panda-Jonas, S, Koch, AEA, Herndon, LW, Moroi, SE, Challa, P, Foo, JN, Bei, J-X, Zeng, Y-X, Simmons, CP, Tran, NBC, Sharmila, PF, Chew, M, Lim, B, Tam, POS, Chua, E, Ng, XY, Yong, VHK, Chong, YF, Meah, WY, Vijayan, S, Seongsoo, S, Xu, W, Teo, YY, Bailey, JNC, Kang, JH, Haines, JL, Cheng, CY, Saw, S-M, Tai, E-S, Richards, JE, Ritch, R, Gaasterland, DE, Pasquale, LR, Liu, J, Jonas, JB, Milea, D, George, R, Al-Obeidan, SA, Mori, K, Macgregor, S, Hewitt, AW, Girkin, CA, Zhang, M, Sundaresan, P, Vijaya, L, Mackey, DA, Wong, TY, Craig, JE, Sun, X, Kinoshita, S, Wiggs, JL, Khor, C-C, Yang, Z, Pang, CP, Wang, N, Hauser, MA, Tashiro, K, Aung, T, Vithana, EN, Li, Z, Allingham, RR, Nakano, M, Jia, L, Chen, Y, Ikeda, Y, Mani, B, Chen, L-J, Kee, C, Garway-Heath, DF, Sripriya, S, Fuse, N, Abu-Amero, KK, Huang, C, Namburi, P, Burdon, K, Perera, SA, Gharahkhani, P, Lin, Y, Ueno, M, Ozaki, M, Mizoguchi, T, Krishnadas, SR, Osman, EA, Lee, MC, Chan, ASY, Tajudin, L-SA, Do, T, Goncalves, A, Reynier, P, Zhang, H, Bourne, R, Goh, D, Broadway, D, Husain, R, Negi, AK, Su, DH, Ho, C-L, Blanco, AA, Leung, CKS, Wong, TT, Yakub, A, Liu, Y, Nongpiur, ME, Han, JC, Hon, DN, Shantha, B, Zhao, B, Sang, J, Zhang, N, Sato, R, Yoshii, K, Panda-Jonas, S, Koch, AEA, Herndon, LW, Moroi, SE, Challa, P, Foo, JN, Bei, J-X, Zeng, Y-X, Simmons, CP, Tran, NBC, Sharmila, PF, Chew, M, Lim, B, Tam, POS, Chua, E, Ng, XY, Yong, VHK, Chong, YF, Meah, WY, Vijayan, S, Seongsoo, S, Xu, W, Teo, YY, Bailey, JNC, Kang, JH, Haines, JL, Cheng, CY, Saw, S-M, Tai, E-S, Richards, JE, Ritch, R, Gaasterland, DE, Pasquale, LR, Liu, J, Jonas, JB, Milea, D, George, R, Al-Obeidan, SA, Mori, K, Macgregor, S, Hewitt, AW, Girkin, CA, Zhang, M, Sundaresan, P, Vijaya, L, Mackey, DA, Wong, TY, Craig, JE, Sun, X, Kinoshita, S, Wiggs, JL, Khor, C-C, Yang, Z, Pang, CP, Wang, N, Hauser, MA, Tashiro, K, Aung, T, and Vithana, EN
Abstract: Primary open angle glaucoma (POAG), a major cause of blindness worldwide, is a complex disease with a significant genetic contribution. We performed Exome Array (Illumina) analysis on 3504 POAG cases and 9746 controls with replication of the most significant findings in 9173 POAG cases and 26 780 controls across 18 collections of Asian, African and European descent. Apart from confirming strong evidence of association at CDKN2B-AS1 (rs2157719 [G], odds ratio [OR] = 0.71, P = 2.81 × 10(-33)), we observed one SNP showing significant association to POAG (CDC7-TGFBR3 rs1192415, ORG-allele = 1.13, Pmeta = 1.60 × 10(-8)). This particular SNP has previously been shown to be strongly associated with optic disc area and vertical cup-to-disc ratio, which are regarded as glaucoma-related quantitative traits. Our study now extends this by directly implicating it in POAG disease pathogenesis.
Published: 2015

27. Common variants near ABCA1, AFAP1 and GMDS confer risk of primary open-angle glaucoma

Author: Gharahkhani, P, Burdon, KP, Fogarty, R, Sharma, S, Hewitt, AW, Martin, S, Law, MH, Cremin, K, Bailey, JNC, Loomis, SJ, Pasquale, LR, Haines, JL, Hauser, MA, Viswanathan, AC, McGuffin, P, Topouzis, F, Foster, PJ, Graham, SL, Casson, RJ, Chehade, M, White, AJ, Zhou, T, Souzeau, E, Landers, J, Fitzgerald, JT, Klebe, S, Ruddle, JB, Goldberg, I, Healey, PR, Mills, RA, Wang, JJ, Montgomery, GW, Martin, NG, Radford-Smith, G, Whiteman, DC, Brown, MA, Wiggs, JL, Mackey, DA, Mitchell, P, MacGregor, S, Craig, JE, Gharahkhani, P, Burdon, KP, Fogarty, R, Sharma, S, Hewitt, AW, Martin, S, Law, MH, Cremin, K, Bailey, JNC, Loomis, SJ, Pasquale, LR, Haines, JL, Hauser, MA, Viswanathan, AC, McGuffin, P, Topouzis, F, Foster, PJ, Graham, SL, Casson, RJ, Chehade, M, White, AJ, Zhou, T, Souzeau, E, Landers, J, Fitzgerald, JT, Klebe, S, Ruddle, JB, Goldberg, I, Healey, PR, Mills, RA, Wang, JJ, Montgomery, GW, Martin, NG, Radford-Smith, G, Whiteman, DC, Brown, MA, Wiggs, JL, Mackey, DA, Mitchell, P, MacGregor, S, and Craig, JE
Abstract: Primary open-angle glaucoma (POAG) is a major cause of irreversible blindness worldwide. We performed a genome-wide association study in an Australian discovery cohort comprising 1,155 cases with advanced POAG and 1,992 controls. We investigated the association of the top SNPs from the discovery stage in two Australian replication cohorts (932 cases and 6,862 controls total) and two US replication cohorts (2,616 cases and 2,634 controls total). Meta-analysis of all cohorts identified three loci newly associated with development of POAG. These loci are located upstream of ABCA1 (rs2472493[G], odds ratio (OR) = 1.31, P = 2.1 × 10(-19)), within AFAP1 (rs4619890[G], OR = 1.20, P = 7.0 × 10(-10)) and within GMDS (rs11969985[G], OR = 1.31, P = 7.7 × 10(-10)). Using RT-PCR and immunolabeling, we show that these genes are expressed within human retina, optic nerve and trabecular meshwork and that ABCA1 and AFAP1 are also expressed in retinal ganglion cells.
Published: 2014

28. ABCC5, a Gene That Influences the Anterior Chamber Depth, Is Associated with Primary Angle Closure Glaucoma

Author: Wiggs, JL, Nongpiur, ME, Khor, CC, Jia, H, Cornes, BK, Chen, L-J, Qiao, C, Nair, KS, Cheng, C-Y, Xu, L, George, R, Do, T, Abu-Amero, K, Perera, SA, Ozaki, M, Mizoguchi, T, Kurimoto, Y, Low, S, Tajudin, L-SA, Ho, C-L, Tham, CCY, Soto, I, Chew, PTK, Wong, H-T, Shantha, B, Kuroda, M, Osman, EA, Tang, G, Fan, S, Meng, H, Wang, H, Feng, B, Yong, VHK, Ting, SML, Li, Y, Wang, Y-X, Li, Z, Lavanya, R, Wu, R-Y, Zheng, Y-F, Su, DH, Loon, S-C, Allingham, RR, Hauser, MA, Soumittra, N, Ramprasad, VL, Waseem, N, Yaakub, A, Chia, K-S, Kumaramanickavel, G, Wong, TT, How, AC, Tran, NBC, Simmons, CP, Bei, J-X, Zeng, Y-X, Bhattacharya, SS, Zhang, M, Tan, DT, Teo, Y-Y, Al-Obeidan, SA, Do, NH, Tai, E-S, Saw, S-M, Foster, PJ, Vijaya, L, Jonas, JB, Wong, T-Y, John, SWM, Pang, C-P, Vithana, EN, Wang, N, Aung, T, Wiggs, JL, Nongpiur, ME, Khor, CC, Jia, H, Cornes, BK, Chen, L-J, Qiao, C, Nair, KS, Cheng, C-Y, Xu, L, George, R, Do, T, Abu-Amero, K, Perera, SA, Ozaki, M, Mizoguchi, T, Kurimoto, Y, Low, S, Tajudin, L-SA, Ho, C-L, Tham, CCY, Soto, I, Chew, PTK, Wong, H-T, Shantha, B, Kuroda, M, Osman, EA, Tang, G, Fan, S, Meng, H, Wang, H, Feng, B, Yong, VHK, Ting, SML, Li, Y, Wang, Y-X, Li, Z, Lavanya, R, Wu, R-Y, Zheng, Y-F, Su, DH, Loon, S-C, Allingham, RR, Hauser, MA, Soumittra, N, Ramprasad, VL, Waseem, N, Yaakub, A, Chia, K-S, Kumaramanickavel, G, Wong, TT, How, AC, Tran, NBC, Simmons, CP, Bei, J-X, Zeng, Y-X, Bhattacharya, SS, Zhang, M, Tan, DT, Teo, Y-Y, Al-Obeidan, SA, Do, NH, Tai, E-S, Saw, S-M, Foster, PJ, Vijaya, L, Jonas, JB, Wong, T-Y, John, SWM, Pang, C-P, Vithana, EN, Wang, N, and Aung, T
Abstract: Anterior chamber depth (ACD) is a key anatomical risk factor for primary angle closure glaucoma (PACG). We conducted a genome-wide association study (GWAS) on ACD to discover novel genes for PACG on a total of 5,308 population-based individuals of Asian descent. Genome-wide significant association was observed at a sequence variant within ABCC5 (rs1401999; per-allele effect size = -0.045 mm, P = 8.17 × 10(-9)). This locus was associated with an increase in risk of PACG in a separate case-control study of 4,276 PACG cases and 18,801 controls (per-allele OR = 1.13 [95% CI: 1.06-1.22], P = 0.00046). The association was strengthened when a sub-group of controls with open angles were included in the analysis (per-allele OR = 1.30, P = 7.45 × 10(-9); 3,458 cases vs. 3,831 controls). Our findings suggest that the increase in PACG risk could in part be mediated by genetic sequence variants influencing anterior chamber dimensions.
Published: 2014

29. Genome-wide analysis of multi-ancestry cohorts identifies new loci influencing intraocular pressure and susceptibility to glaucoma

Author: Hysi, PG, Cheng, C-Y, Springelkamp, H, Macgregor, S, Bailey, JNC, Wojciechowski, R, Vitart, V, Nag, A, Hewitt, AW, Hohn, R, Venturini, C, Mirshahi, A, Ramdas, WD, Thorleifsson, G, Vithana, E, Khor, C-C, Stefansson, AB, Liao, J, Haines, JL, Amin, N, Wang, YX, Wild, PS, Ozel, AB, Li, JZ, Fleck, BW, Zeller, T, Staffieri, SE, Teo, Y-Y, Cuellar-Partida, G, Luo, X, Allingham, RR, Richards, JE, Senft, A, Karssen, LC, Zheng, Y, Bellenguez, C, Xu, L, Iglesias, AI, Wilson, JF, Kang, JH, van Leeuwen, EM, Jonsson, V, Thorsteinsdottir, U, Despriet, DDG, Ennis, S, Moroi, SE, Martin, NG, Jansonius, NM, Yazar, S, Tai, E-S, Amouyel, P, Kirwan, J, van Koolwijk, LME, Hauser, MA, Jonasson, F, Leo, P, Loomis, SJ, Fogarty, R, Rivadeneira, F, Kearns, L, Lackner, KJ, de Jong, PTVM, Simpson, CL, Pennell, CE, Oostra, BA, Uitterlinden, AG, Saw, S-M, Lotery, AJ, Bailey-Wilson, JE, Hofman, A, Vingerling, JR, Maubaret, C, Pfeiffer, N, Wolfs, RCW, Lemij, HG, Young, TL, Pasquale, LR, Delcourt, C, Spector, TD, Klaver, CCW, Small, KS, Burdon, KP, Stefansson, K, Wong, T-Y, Viswanathan, A, Mackey, DA, Craig, JE, Wiggs, JL, van Duijn, CM, Hammond, CJ, Aung, T, Hysi, PG, Cheng, C-Y, Springelkamp, H, Macgregor, S, Bailey, JNC, Wojciechowski, R, Vitart, V, Nag, A, Hewitt, AW, Hohn, R, Venturini, C, Mirshahi, A, Ramdas, WD, Thorleifsson, G, Vithana, E, Khor, C-C, Stefansson, AB, Liao, J, Haines, JL, Amin, N, Wang, YX, Wild, PS, Ozel, AB, Li, JZ, Fleck, BW, Zeller, T, Staffieri, SE, Teo, Y-Y, Cuellar-Partida, G, Luo, X, Allingham, RR, Richards, JE, Senft, A, Karssen, LC, Zheng, Y, Bellenguez, C, Xu, L, Iglesias, AI, Wilson, JF, Kang, JH, van Leeuwen, EM, Jonsson, V, Thorsteinsdottir, U, Despriet, DDG, Ennis, S, Moroi, SE, Martin, NG, Jansonius, NM, Yazar, S, Tai, E-S, Amouyel, P, Kirwan, J, van Koolwijk, LME, Hauser, MA, Jonasson, F, Leo, P, Loomis, SJ, Fogarty, R, Rivadeneira, F, Kearns, L, Lackner, KJ, de Jong, PTVM, Simpson, CL, Pennell, CE, Oostra, BA, Uitterlinden, AG, Saw, S-M, Lotery, AJ, Bailey-Wilson, JE, Hofman, A, Vingerling, JR, Maubaret, C, Pfeiffer, N, Wolfs, RCW, Lemij, HG, Young, TL, Pasquale, LR, Delcourt, C, Spector, TD, Klaver, CCW, Small, KS, Burdon, KP, Stefansson, K, Wong, T-Y, Viswanathan, A, Mackey, DA, Craig, JE, Wiggs, JL, van Duijn, CM, Hammond, CJ, and Aung, T
Abstract: Elevated intraocular pressure (IOP) is an important risk factor in developing glaucoma, and variability in IOP might herald glaucomatous development or progression. We report the results of a genome-wide association study meta-analysis of 18 population cohorts from the International Glaucoma Genetics Consortium (IGGC), comprising 35,296 multi-ancestry participants for IOP. We confirm genetic association of known loci for IOP and primary open-angle glaucoma (POAG) and identify four new IOP-associated loci located on chromosome 3q25.31 within the FNDC3B gene (P = 4.19 × 10(-8) for rs6445055), two on chromosome 9 (P = 2.80 × 10(-11) for rs2472493 near ABCA1 and P = 6.39 × 10(-11) for rs8176693 within ABO) and one on chromosome 11p11.2 (best P = 1.04 × 10(-11) for rs747782). Separate meta-analyses of 4 independent POAG cohorts, totaling 4,284 cases and 95,560 controls, showed that 3 of these loci for IOP were also associated with POAG.
Published: 2014

30. Meta-analysis of genome-wide association studies identifies novel loci that influence cupping and the glaucomatous process

Author: Springelkamp, H, Hoehn, R, Mishra, A, Hysi, PG, Khor, C-C, Loomis, SJ, Bailey, JNC, Gibson, J, Thorleifsson, G, Janssen, SF, Luo, X, Ramdas, WD, Vithana, E, Nongpiur, ME, Montgomery, G, Xu, L, Mountain, JE, Gharahkhani, P, Lu, Y, Amin, N, Karssen, LC, Sim, K-S, van Leeuwen, EM, Iglesias, AI, Verhoeven, VJM, Hauser, MA, Loon, S-C, Despriet, DDG, Nag, A, Venturini, C, Sanfilippo, PG, Schillert, A, Kang, JH, Landers, J, Jonasson, F, Cree, AJ, van Koolwijk, LME, Rivadeneira, F, Souzeau, E, Jonsson, V, Menon, G, Weinreb, RN, de Jong, PTVM, Oostra, BA, Uitterlinden, AG, Hofman, A, Ennis, S, Thorsteinsdottir, U, Burdon, KP, Spector, TD, Mirshahi, A, Saw, S-M, Vingerling, JR, Teo, Y-Y, Haines, JL, Wolfs, RCW, Lemij, HG, Tai, E-S, Jansonius, NM, Jonas, JB, Cheng, C-Y, Aung, T, Viswanathan, AC, Klaver, CCW, Craig, JE, Macgregor, S, Mackey, DA, Lotery, AJ, Stefansson, K, Bergen, AAB, Young, TL, Wiggs, JL, Pfeiffer, N, Wong, T-Y, Pasquale, LR, Hewitt, AW, van Duijn, CM, Hammond, CJ, Springelkamp, H, Hoehn, R, Mishra, A, Hysi, PG, Khor, C-C, Loomis, SJ, Bailey, JNC, Gibson, J, Thorleifsson, G, Janssen, SF, Luo, X, Ramdas, WD, Vithana, E, Nongpiur, ME, Montgomery, G, Xu, L, Mountain, JE, Gharahkhani, P, Lu, Y, Amin, N, Karssen, LC, Sim, K-S, van Leeuwen, EM, Iglesias, AI, Verhoeven, VJM, Hauser, MA, Loon, S-C, Despriet, DDG, Nag, A, Venturini, C, Sanfilippo, PG, Schillert, A, Kang, JH, Landers, J, Jonasson, F, Cree, AJ, van Koolwijk, LME, Rivadeneira, F, Souzeau, E, Jonsson, V, Menon, G, Weinreb, RN, de Jong, PTVM, Oostra, BA, Uitterlinden, AG, Hofman, A, Ennis, S, Thorsteinsdottir, U, Burdon, KP, Spector, TD, Mirshahi, A, Saw, S-M, Vingerling, JR, Teo, Y-Y, Haines, JL, Wolfs, RCW, Lemij, HG, Tai, E-S, Jansonius, NM, Jonas, JB, Cheng, C-Y, Aung, T, Viswanathan, AC, Klaver, CCW, Craig, JE, Macgregor, S, Mackey, DA, Lotery, AJ, Stefansson, K, Bergen, AAB, Young, TL, Wiggs, JL, Pfeiffer, N, Wong, T-Y, Pasquale, LR, Hewitt, AW, van Duijn, CM, and Hammond, CJ
Abstract: Glaucoma is characterized by irreversible optic nerve degeneration and is the most frequent cause of irreversible blindness worldwide. Here, the International Glaucoma Genetics Consortium conducts a meta-analysis of genome-wide association studies of vertical cup-disc ratio (VCDR), an important disease-related optic nerve parameter. In 21,094 individuals of European ancestry and 6,784 individuals of Asian ancestry, we identify 10 new loci associated with variation in VCDR. In a separate risk-score analysis of five case-control studies, Caucasians in the highest quintile have a 2.5-fold increased risk of primary open-angle glaucoma as compared with those in the lowest quintile. This study has more than doubled the known loci associated with optic disc cupping and will allow greater understanding of mechanisms involved in this common blinding condition.
Published: 2014

31. Meta-analysis of genome-wide association studies identifies novel loci that influence cupping and the glaucomatous process

Author: Springelkamp, Henriët, Hohn, R, Mishra, A, Hysi, PG, Khor, CC, Loomis, SJ, Bailey, JNC, Gibson, J, Thorleifsson, G, Janssen, SF, Luo, XY, Ramdas, Wishal, Vithana, E, Nongpiur, ME, Montgomery, G, Xu, L, Mountain, JE, Gharahkhani, P, Lu, Y (Yi), Amin, Najaf, Karssen, Lennart, Sim, KS, Leeuwen, Elisa, Iglesias, AI, Verhoeven, Virginie, Hauser, MA, Loon, SC, Despriet, Dominiek, Nag, A, Venturini, C, Sanfilippo, PG, Schillert, A, Kang, JH, Landers, J, Jonasson, F, Cree, AJ, Koolwijk, Leonieke, Rivadeneira, Fernando, Souzeau, E, Jonsson, V, Menon, G, Weinreb, RN, Oostra, Ben, Uitterlinden, André, Hofman, Bert, Ennis, S, Thorsteinsdottir, U, Burdon, KP, Spector, TD, Mirshahi, A, Saw, SM, Vingerling, Hans, Teo, YY, Haines, JL, Wolfs, R.C.W., Lemij, HG, Tai, ES, Jansonius, NM (Nomdo), Jonas, JB, Cheng, CY (Ching-Yu), Aung, T, Viswanathan, AC, Klaver, Caroline, Craig, JE, Macgregor, S, Mackey, DA, Lotery, AJ, Stefansson, K, Young, TL, Wiggs, JL, Pfeiffer, N, Wong, TY (Tien Yin), Pasquale, LR, Hewitt, AW, Duijn, Cornelia, Hammond, CJ, Bergen, AAB, Springelkamp, Henriët, Hohn, R, Mishra, A, Hysi, PG, Khor, CC, Loomis, SJ, Bailey, JNC, Gibson, J, Thorleifsson, G, Janssen, SF, Luo, XY, Ramdas, Wishal, Vithana, E, Nongpiur, ME, Montgomery, G, Xu, L, Mountain, JE, Gharahkhani, P, Lu, Y (Yi), Amin, Najaf, Karssen, Lennart, Sim, KS, Leeuwen, Elisa, Iglesias, AI, Verhoeven, Virginie, Hauser, MA, Loon, SC, Despriet, Dominiek, Nag, A, Venturini, C, Sanfilippo, PG, Schillert, A, Kang, JH, Landers, J, Jonasson, F, Cree, AJ, Koolwijk, Leonieke, Rivadeneira, Fernando, Souzeau, E, Jonsson, V, Menon, G, Weinreb, RN, Oostra, Ben, Uitterlinden, André, Hofman, Bert, Ennis, S, Thorsteinsdottir, U, Burdon, KP, Spector, TD, Mirshahi, A, Saw, SM, Vingerling, Hans, Teo, YY, Haines, JL, Wolfs, R.C.W., Lemij, HG, Tai, ES, Jansonius, NM (Nomdo), Jonas, JB, Cheng, CY (Ching-Yu), Aung, T, Viswanathan, AC, Klaver, Caroline, Craig, JE, Macgregor, S, Mackey, DA, Lotery, AJ, Stefansson, K, Young, TL, Wiggs, JL, Pfeiffer, N, Wong, TY (Tien Yin), Pasquale, LR, Hewitt, AW, Duijn, Cornelia, Hammond, CJ, and Bergen, AAB
Abstract: Glaucoma is characterized by irreversible optic nerve degeneration and is the most frequent cause of irreversible blindness worldwide. Here, the International Glaucoma Genetics Consortium conducts a meta-analysis of genome-wide association studies of vertical cup-disc ratio (VCDR), an important disease-related optic nerve parameter. In 21,094 individuals of European ancestry and 6,784 individuals of Asian ancestry, we identify 10 new loci associated with variation in VCDR. In a separate risk-score analysis of five case-control studies, Caucasians in the highest quintile have a 2.5-fold increased risk of primary open-angle glaucoma as compared with those in the lowest quintile. This study has more than doubled the known loci associated with optic disc cupping and will allow greater understanding of mechanisms involved in this common blinding condition.
Published: 2014

32. The p53 Codon 72 PRO/PRO Genotype May Be Associated with Initial Central Visual Field Defects in Caucasians with Primary Open Angle Glaucoma

Author: Hollander, AID, Wiggs, JL, Hewitt, AW, Fan, BJ, Wang, DY, Sena, DRF, O'Brien, C, Realini, A, Craig, JE, Dimasi, DP, Mackey, DA, Haines, JL, Pasquale, LR, Hollander, AID, Wiggs, JL, Hewitt, AW, Fan, BJ, Wang, DY, Sena, DRF, O'Brien, C, Realini, A, Craig, JE, Dimasi, DP, Mackey, DA, Haines, JL, and Pasquale, LR
Abstract: BACKGROUND: Loss of vision in glaucoma is due to apoptotic retinal ganglion cell loss. While p53 modulates apoptosis, gene association studies between p53 variants and glaucoma have been inconsistent. In this study we evaluate the association between a p53 variant functionally known to influence apoptosis (codon 72 Pro/Arg) and the subset of primary open angle glaucoma (POAG) patients with early loss of central visual field. METHODS: Genotypes for the p53 codon 72 polymorphism (Pro/Arg) were obtained for 264 POAG patients and 400 controls from the U.S. and in replication studies for 308 POAG patients and 178 controls from Australia (GIST). The glaucoma patients were divided into two groups according to location of initial visual field defect (either paracentral or peripheral). All cases and controls were Caucasian with European ancestry. RESULTS: The p53-PRO/PRO genotype was more frequent in the U.S. POAG patients with early visual field defects in the paracentral regions compared with those in the peripheral regions or control group (p=2.7 × 10(-5)). We replicated this finding in the GIST cohort (p =7.3 × 10(-3), and in the pooled sample (p=6.6 × 10(-7)) and in a meta-analysis of both the US and GIST datasets (1.3 × 10(-6), OR 2.17 (1.58-2.98 for the PRO allele). CONCLUSIONS: These results suggest that the p53 codon 72 PRO/PRO genotype is potentially associated with early paracentral visual field defects in primary open-angle glaucoma patients.
Published: 2012

33. Common variants at 9p21 and 8q22 are associated with increased susceptibility to optic nerve degeneration in glaucoma

Author: Wiggs, JL, Yaspan, BL, Hauser, MA, Kang, JH, Allingham, RR, Olson, LM, Abdrabou, W, Fan, BJ, Wang, DY, Brodeur, W, Budenz, DL, Caprioli, J, Crenshaw, A, Crooks, K, DelBono, E, Doheny, KF, Friedman, DS, Gaasterland, D, Gaasterland, T, Laurie, C, Lee, RK, Lichter, PR, Loomis, S, Liu, Y, Medeiros, FA, McCarty, C, Mirel, D, Moroi, SE, Musch, DC, Realini, A, Rozsa, FW, Schuman, JS, Scott, K, Singh, K, Stein, JD, Trager, EH, VanVeldhuisen, P, Vollrath, D, Wollstein, G, Yoneyama, S, Zhang, K, Weinreb, RN, Ernst, J, Kellis, M, Masuda, T, Zack, D, Richards, JE, Pericak-Vance, M, Pasquale, LR, Haines, JL, Wiggs, JL, Yaspan, BL, Hauser, MA, Kang, JH, Allingham, RR, Olson, LM, Abdrabou, W, Fan, BJ, Wang, DY, Brodeur, W, Budenz, DL, Caprioli, J, Crenshaw, A, Crooks, K, DelBono, E, Doheny, KF, Friedman, DS, Gaasterland, D, Gaasterland, T, Laurie, C, Lee, RK, Lichter, PR, Loomis, S, Liu, Y, Medeiros, FA, McCarty, C, Mirel, D, Moroi, SE, Musch, DC, Realini, A, Rozsa, FW, Schuman, JS, Scott, K, Singh, K, Stein, JD, Trager, EH, VanVeldhuisen, P, Vollrath, D, Wollstein, G, Yoneyama, S, Zhang, K, Weinreb, RN, Ernst, J, Kellis, M, Masuda, T, Zack, D, Richards, JE, Pericak-Vance, M, Pasquale, LR, and Haines, JL
Abstract: Optic nerve degeneration caused by glaucoma is a leading cause of blindness worldwide. Patients affected by the normal-pressure form of glaucoma are more likely to harbor risk alleles for glaucoma-related optic nerve disease. We have performed a meta-analysis of two independent genome-wide association studies for primary open angle glaucoma (POAG) followed by a normal-pressure glaucoma (NPG, defined by intraocular pressure (IOP) less than 22 mmHg) subgroup analysis. The single-nucleotide polymorphisms that showed the most significant associations were tested for association with a second form of glaucoma, exfoliation-syndrome glaucoma. The overall meta-analysis of the GLAUGEN and NEIGHBOR dataset results (3,146 cases and 3,487 controls) identified significant associations between two loci and POAG: the CDKN2BAS region on 9p21 (rs2157719 [G], OR = 0.69 [95%CI 0.63-0.75], p = 1.86×10-18), and the SIX1/SIX6 region on chromosome 14q23 (rs10483727 [A], OR = 1.32 [95%CI 1.21-1.43], p = 3.87×10-11). In sub-group analysis two loci were significantly associated with NPG: 9p21 containing the CDKN2BAS gene (rs2157719 [G], OR = 0.58 [95% CI 0.50-0.67], p = 1.17×10-12) and a probable regulatory region on 8q22 (rs284489 [G], OR = 0.62 [95% CI 0.53-0.72], p = 8.88×10-10). Both NPG loci were also nominally associated with a second type of glaucoma, exfoliation syndrome glaucoma (rs2157719 [G], OR = 0.59 [95% CI 0.41-0.87], p = 0.004 and rs284489 [G], OR = 0.76 [95% CI 0.54-1.06], p = 0.021), suggesting that these loci might contribute more generally to optic nerve degeneration in glaucoma. Because both loci influence transforming growth factor beta (TGF-beta) signaling, we performed a genomic pathway analysis that showed an association between the TGF-beta pathway and NPG (permuted p = 0.009). These results suggest that neuro-protective therapies targeting TGF-beta signaling could be effective for multiple forms of glaucoma. © 2012 Wiggs et al.
Published: 2012

34. Investigation of founder effects for the Thr377Met Myocilin mutation in glaucoma families from differing ethnic backgrounds.

Author: Hewitt, AW, Sundaresan, P, Wiggs, JL, Mackey, DA, Wirtz, MK, Samples, JR, Allingham, RR, Jarvela, I, Kitsos, G, Krishnadas, SR, Richards, JE, Lichter, PR, Petersen, MB, Hewitt, AW, Sundaresan, P, Wiggs, JL, Mackey, DA, Wirtz, MK, Samples, JR, Allingham, RR, Jarvela, I, Kitsos, G, Krishnadas, SR, Richards, JE, Lichter, PR, and Petersen, MB
Abstract: Purpose: The aim of this study was to determine if there is a common founder for the Thr377Met myocilin mutation in primary open angle glaucoma (POAG) families with various ethnic backgrounds. Methods: Genomic DNA of 24 POAG-affected individuals from nine pedigrees with the Thr377Met mutation and 104 unaffected family members was genotyped with six microsatellite markers and four single nucleotide polymorphisms. The families were from Greece, India, Finland, the USA, and Australia. To assess the degree of linkage disequilibrium across MYOC in the general population we also investigated data generated from the HapMap consortium. Results: Three distinct haplotypes associated with the Thr377Met myocilin mutation were identified. The families from the USA and Greece, as well as the three Australian families originating from Greece and the former Yugoslavian Republic of Macedonia had one common haplotype. Interestingly, however, HapMap data suggest that linkage disequilibrium across MYOC was not strong. Conclusions: The Thr377Met myocilin mutation has arisen at least three separate times. Evidence for genetic founder effects in this prevalent age-related, yet heterogeneous, disease has important implications for future gene identification strategies.

35. Glaucoma-Protective Human Single-Nucleotide Polymorphism in the Angpt2 Locus Increased ANGPT2 Expression and Schlemm Canal Area in Mice-Brief Report.

Author: Kiyota N, Onay T, Leeaw P, Liu P, Deb DK, Thomson BR, Segrè AV, Wiggs JL, and Quaggin SE
Subjects: Animals, Humans, Mice, Mice, Inbred C57BL, Glaucoma, Open-Angle genetics, Glaucoma, Open-Angle metabolism, Male, Receptor, TIE-2 genetics, Receptor, TIE-2 metabolism, Genetic Predisposition to Disease, Intraocular Pressure, Female, Phenotype, Trabecular Meshwork metabolism, MicroRNAs genetics, MicroRNAs metabolism, Anterior Chamber metabolism, Schlemm's Canal, Angiopoietin-2 genetics, Angiopoietin-2 metabolism, Polymorphism, Single Nucleotide, Disease Models, Animal
Abstract: Background: The ANGPT (angiopoietin)-TEK (tyrosine kinase, endothelial) vascular signaling pathway plays a key role in the formation of Schlemm canal, and loss-of-function mutations in the TEK or ANGPT1 gene are associated with primary congenital glaucoma in children. In genome-wide association studies, an association was identified between protection from primary open-angle glaucoma and the single-nucleotide polymorphism rs76020419 (G>T), located within a predicted miR-145 -binding site in the 3' untranslated region of ANGPT2 . To date, the functional impact of this variant in the anterior chamber of the eye remains largely unexplored., Methods: MT (mutant) mice harboring an orthologous rs76020419 minor allele (T) were generated using CRISPR/Cas9 (clustered regularly interspaced short palindromic repeats/clustered regularly interspaced short palindromic repeat-associated 9). Plasma and tissue samples, including eyes, were collected, and ANGPT2 expression was quantified using ELISA. Anterior segments from eyes were collected from WT (wild-type) and MT mice, and Schlemm canal area was quantified., Results: In the MT group, higher ANGPT2 concentrations were observed in the plasma, lungs, kidneys, and eyes ( P =0.0212, P <0.001, P =0.0815, and P =0.0215, respectively). Additionally, the Schlemm canal was larger in MT mice compared with WT mice ( P =0.0430)., Conclusions: The rs76020419 minor allele (T) is associated with increased levels of ANGPT2 and a larger Schlemm canal in mice. These findings suggest a potential protective mechanism in glaucoma., Competing Interests: S.E. Quaggin is listed as an inventor in patents related to the therapeutic targeting of the ANGPT (angiopoietin)-TEK (tyrosine kinase, endothelial) pathway in ocular hypertension and glaucoma and is a founder and owns stock in Mannin Research. Additionally, S.E. Quaggin receives consulting fees from AstraZeneca and Roche/Genentech and is a member of the board of directors of AbbVie. B.R. Thomson has applied for a patent related to the therapeutic targeting of the ANGPT-TEK pathway. Unrelated to this research, B.R. Thomson has received research funding from Bayer. The other authors report no conflicts.
Published: 2024
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36. The Association of Urinary Sodium Excretion with Glaucoma and Related Traits in a Large United Kingdom Population.

Author: Stuart KV, Biradar MI, Luben RN, Dhaun N, Wagner SK, Warwick AN, Sun Z, Madjedi KM, Pasquale LR, Wiggs JL, Kang JH, Lentjes MAH, Aschard H, Kim J, Foster PJ, and Khawaja AP
Subjects: Humans, Female, Middle Aged, Male, Cross-Sectional Studies, United Kingdom epidemiology, Risk Factors, Aged, Biomarkers urine, Retinal Ganglion Cells pathology, Nerve Fibers pathology, Tomography, Optical Coherence methods, Population Surveillance, Intraocular Pressure physiology, Glaucoma epidemiology, Glaucoma physiopathology, Sodium urine
Abstract: Purpose: Excessive dietary sodium intake has known adverse effects on intravascular fluid volume and systemic blood pressure, which may influence intraocular pressure (IOP) and glaucoma risk. This study aimed to assess the association of urinary sodium excretion, a biomarker of dietary intake, with glaucoma and related traits, and determine whether this relationship is modified by genetic susceptibility to disease., Design: Cross-sectional observational and gene-environment interaction analyses in the population-based UK Biobank study., Participants: Up to 103 634 individuals (mean age: 57 years; 51% women) with complete urinary, ocular, and covariable data., Methods: Urine sodium:creatinine ratio (UNa:Cr; mmol:mmol) was calculated from a midstream urine sample. Ocular parameters were measured as part of a comprehensive eye examination, and glaucoma case ascertainment was through a combination of self-report and linked national hospital records. Genetic susceptibility to glaucoma was calculated based on a glaucoma polygenic risk score comprising 2673 common genetic variants. Multivariable linear and logistic regression, adjusted for key sociodemographic, medical, anthropometric, and lifestyle factors, were used to model associations and gene-environment interactions., Main Outcome Measures: Corneal-compensated IOP, OCT derived macular retinal nerve fiber layer and ganglion cell-inner plexiform layer (GCIPL) thickness, and prevalent glaucoma., Results: In maximally adjusted regression models, a 1 standard deviation increase in UNa:Cr was associated with higher IOP (0.14 mmHg; 95% confidence interval [CI], 0.12-0.17; P < 0.001) and greater prevalence of glaucoma (odds ratio, 1.11; 95% CI, 1.07-1.14; P < 0.001) but not macular retinal nerve fiber layer or ganglion cell-inner plexiform layer thickness. Compared with those with UNa:Cr in the lowest quintile, those in the highest quintile had significantly higher IOP (0.45 mmHg; 95% CI, 0.36-0.53, P < 0.001) and prevalence of glaucoma (odds ratio, 1.30; 95% CI, 1.17-1.45; P < 0.001). Stronger associations with glaucoma (P interaction = 0.001) were noted in participants with a higher glaucoma polygenic risk score., Conclusions: Urinary sodium excretion, a biomarker of dietary intake, may represent an important modifiable risk factor for glaucoma, especially in individuals at high underlying genetic risk. These findings warrant further investigation because they may have important clinical and public health implications., Financial Disclosure(s): Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article., (Copyright © 2024 American Academy of Ophthalmology. Published by Elsevier Inc. All rights reserved.)
Published: 2024
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37. The Clinical Usefulness of a Glaucoma Polygenic Risk Score in 4 Population-Based European Ancestry Cohorts.

Author: de Vries VA, Hanyuda A, Vergroesen JE, Do R, Friedman DS, Kraft P, Turman C, Luo YL, Tran JH, Liefers B, Wong SH, Lee RH, Zebardast N, Klaver CCW, Segrè AV, Pasquale LR, Wiggs JL, Kang JH, and Ramdas WD
Abstract: Purpose: We used a polygenic risk score (PRS) to identify high-risk groups for primary open-angle glaucoma (POAG) within population-based cohorts., Design: Secondary analysis of 4 prospective population-based studies., Participants: We included four European-ancestry cohorts: the United States-based Nurses' Health Study, Nurses' Health Study 2, and the Health Professionals Follow-up Study and the Rotterdam Study (RS) in The Netherlands. The United States cohorts included female nurses and male health professionals ≤ 55 years of age. The RS included residents ≤ 45 years of age living in Rotterdam, The Netherlands., Methods: Polygenic risk score weights were estimated by applying the lassosum method on imputed genotype and phenotype data from the UK Biobank. This resulted in 144 020 variants, single nucleotide polymorphism and insertions or deletions, with nonzero βs that we used to calculate a PRS in the target populations. Using multivariable Cox proportional hazard models, we estimated the relationship between the standardized PRS and relative risk for POAG. Additionally, POAG prediction was tested by calculating these models' concordance (Harrell's C statistic). Finally, we assessed the association between PRS tertiles and glaucoma-related traits., Main Outcome Measures: The relative risk for POAG and Harrell's C statistic., Results: Among 1046 patients and 38 809‬ control participants, the relative risk (95% confidence interval) for POAG for participants in the highest PRS quintile was 3.99 (3.08-5.18) times higher in the United States cohorts and 4.89 (2.93-8.17) times higher in the RS, compared with participants with median genetic risk (third quintile). Combining age, sex, intraocular pressure of more than 25 mmHg, and family history resulted in a meta-analyzed concordance of 0.75 (95% CI, 0.73-0.75). Adding the PRS to this model improved the concordance to 0.82 (95% CI, 0.80-0.84). In a meta-analysis of all cohorts, patients in the highest tertile showed a larger cup-to-disc ratio at diagnosis, by 0.10 (95% CI, 0.06 0.14), and a 2.07-fold increased risk of requiring glaucoma surgery (95% CI, 1.19-3.60)., Conclusions: Incorporating a PRS into a POAG predictive model improves identification concordance from 0.75 up to 0.82, supporting its potential for guiding more cost-effective screening strategies., Financial Disclosure(s): Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article., (Copyright © 2024 American Academy of Ophthalmology. Published by Elsevier Inc. All rights reserved.)
Published: 2024
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38. Independent Effects of Blood Pressure on Intraocular Pressure and Retinal Ganglion Cell Degeneration: A Mendelian Randomization Study.

Author: Rajasundaram S, Segrè AV, Gill D, Woolf B, Zekavat SM, Burgess S, Khawaja AP, Zebardast N, and Wiggs JL
Subjects: Humans, Nerve Fibers pathology, Retinal Degeneration genetics, Retinal Degeneration physiopathology, Male, Polymorphism, Single Nucleotide, Female, Intraocular Pressure physiology, Retinal Ganglion Cells pathology, Mendelian Randomization Analysis, Glaucoma, Open-Angle genetics, Glaucoma, Open-Angle physiopathology, Blood Pressure physiology
Abstract: Purpose: To investigate the causal effect of elevated blood pressure on primary open-angle glaucoma (POAG) and POAG endophenotypes., Methods: Two-sample Mendelian randomization (MR) was performed to investigate the causal effect of elevated systolic blood pressure (SBP) (N = 757,601) and diastolic blood pressure (DBP) (N = 757,601) on intraocular pressure (IOP) (N = 139,555), macular retinal nerve fiber layer (mRNFL) thickness (N = 33,129), ganglion cell complex (GCC) thickness (N = 33,129), vertical cup-to-disc ratio (VCDR) (N = 111,724), and POAG liability (Ncases = 16,677, Ncontrols = 199,580). The primary analysis was conducted using the inverse-variance weighted approach. Sensitivity analyses were performed to investigate robustness to horizontal pleiotropy, winner's curse, and collider bias. Multivariable MR was performed to investigate whether any effect of blood pressure on retinal ganglion cell degeneration was mediated through increased IOP., Results: Increased genetically predicted SBP and DBP associated with an increase in IOP (0.17 mm Hg [95% CI = 0.11 to 0.24] per 10 mm Hg higher SBP, P = 5.18 × 10-7, and 0.17 mm Hg [95% CI = 0.05 to 0.28 mm Hg] per 10 mm Hg higher DBP, P = 0.004). Increased genetically predicted SBP associated with a thinner GCC (0.04 µm [95% CI = -0.07 to -0.01 µm], P = 0.018) and a thinner mRNFL (0.04 µm [95% CI = -0.07 to -0.01 µm], P = 0.004), an effect that arises independently of IOP according to our mediation analysis. Neither SBP nor DBP associated with VCDR or POAG liability., Conclusions: These findings support a causal effect of elevated blood pressure on retinal ganglion cell degeneration that does not require intermediary changes in IOP. Targeted blood pressure control may help preserve vision by lowering IOP and, independently, by preventing retinal ganglion cell degeneration, including in individuals with a normal IOP.
Published: 2024
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39. Use of Diagnostic Codes for Primary Open-Angle Glaucoma Polygenic Risk Score Construction in Electronic Health Record-Linked Biobanks.

Author: Tran JH, Kang J, Han E, Gupta U, Seresirikachorn K, Vy HMT, Zhao Y, Rocheleau G, Luo Y, Lee R, Do R, Friedman DS, Kang JH, Wiggs JL, Pasquale LR, Segrè AV, and Zebardast N
Abstract: Purpose: Polygenic risk scores (PRSs) likely predict risk and prognosis of glaucoma. We compared the PRS performance for primary open-angle glaucoma (POAG), defined using International Classification of Diseases (ICD) codes vs manual medical record review., Design: Retrospective cohort study., Methods: We identified POAG cases in the Mount Sinai BioMe and Mass General Brigham (MGB) biobanks using ICD codes. We confirmed POAG based on optical coherence tomograms and visual fields. In a separate 5% sample, the absence of POAG was confirmed with intraocular pressure and cup-disc ratio criteria. We used genotype data and either self-reported glaucoma diagnoses or ICD-10 codes for glaucoma diagnoses from the UK Biobank and the lassosum method to compute a genome-wide POAG PRS. We compared the area under the curve (AUC) for POAG prediction based on ICD codes vs medical records., Results: We reviewed 804 of 996 BioMe and 367 of 1006 MGB ICD-identified cases. In BioMe and MGB, respectively, positive predictive value was 53% and 55%; negative predictive value was 96% and 97%; sensitivity was 97% and 97%; and specificity was 44% and 53%. Adjusted PRS AUCs for POAG using ICD codes vs manual record review in BioMe were not statistically different (P ≥.21) by ancestry: 0.77 vs 0.75 for African, 0.80 vs 0.80 for Hispanic, and 0.81 vs 0.81 for European. Results were similar in MGB (P ≥.18): 0.72 vs 0.80 for African, 0.83 vs 0.86 for Hispanic, and 0.74 vs 0.73 for European., Conclusions: A POAG PRS performed similarly using either manual review or ICD codes in 2 electronic health record-linked biobanks; manual assessment of glaucoma status might not be necessary for some PRS studies. However, caution should be exercised when using ICD codes for glaucoma diagnosis given their low specificity (44%-53%) for manually confirmed cases of glaucoma., (Copyright © 2024 Elsevier Inc. All rights reserved.)
Published: 2024
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40. Optic Nerve T2 Signal Intensity and Caliber Reflect Clinical Severity in Genetic Optic Atrophy.

Author: Nagy MA, Cunnane ME, Juliano AF, Wiggs JL, Caruso PA, and Gaier ED
Abstract: Background: Genetic optic atrophies comprise phenotypically heterogenous disorders of mitochondrial function. We aimed to correlate quantitative neuroimaging findings of the optic nerves in these disorders with clinical measures., Methods: From a retrospective database of 111 patients with bilateral optic atrophy referred for genetic testing, 15 patients diagnosed with nonglaucomatous optic atrophy of genetic origin (7 patients with pathogenic variants in OPA1, 3 patients with Wolfram syndrome, and 5 patients with Leber hereditary optic neuropathy) who had accessible magnetic resonance (MR) images of the orbits and/or brain were analyzed. The primary outcome measures of T2 short Tau inversion recovery (STIR) signal and optic nerve caliber were quantified according to a standardized protocol, normalized to internal standards, and compared between cases and controls. Inter-rater reliability was assessed and clinical features were analyzed according to MRI features., Results: Compared with control patients, the 15 genetic optic atrophy patients demonstrated significantly increased T2 STIR signal (fold-change 1.6, P = 0.0016) and decreased optic nerve caliber (fold-change 0.72, P = 0.00012) after internal normalization. These metrics were reliable (inter-reader reliability correlation coefficients of 0.98 [P = 0.00036] and 0.74 [P = 0.0025] for normalized STIR and nerve caliber, respectively) and significantly correlated with visual acuity, cup-to-disc ratio, and visual field testing., Conclusion: Normalized optic nerve STIR signal and optic nerve caliber significantly correlate with visual acuity, cup-to-disc ratio, and perimetric performance in patients with genetic optic atrophy. A formalized protocol to characterize these differences on MRI may help to guide accurate and expedient diagnostic evaluation., Competing Interests: M. A. Nagy reports Apertura Gene Therapy, Inc. (Patent, Former consultant) and Skylark Bio (Patent); E. D. Gaier reports Luminopia, Inc. (Equity, Advisor, Patent), Stoke Therapeutics, Inc. (Consultant), and Neurofieldz, Inc. (Consultant). The remaining authors report no conflicts of interest., (Copyright © 2024 by North American Neuro-Ophthalmology Society.)
Published: 2024
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41. Relationship Between Oral Health and Glaucoma Traits in the United Kingdom.

Author: Lee RH, Kang JH, Wiggs JL, Wagner SK, Khawaja AP, and Pasquale LR
Subjects: Humans, Cross-Sectional Studies, United Kingdom epidemiology, Male, Female, Middle Aged, Aged, Self Report, Risk Factors, Prevalence, Tomography, Optical Coherence, Adult, Oral Health, Intraocular Pressure physiology, Nerve Fibers pathology, Glaucoma epidemiology, Glaucoma physiopathology, Retinal Ganglion Cells pathology
Abstract: Prcis: In this cross-sectional analysis of UK Biobank participants, we find no adverse association between self-reported oral health conditions and either glaucoma or elevated intraocular pressures., Purpose: Poor oral health may cause inflammation, which accelerates the progression of neurodegenerative diseases. We investigated the relationship between oral health and glaucoma., Patients: United Kingdom Biobank participants., Methods: This is a cross-sectional analysis of participants categorized by self-reported oral health status. Multivariable linear and logistic regression models were used. Primary analysis examined the association with glaucoma prevalence. Secondary analyses examined associations with IOP, macular retinal nerve fiber layer (mRNFL), and ganglion cell inner plexiform layer (mGCIPL) thicknesses, and interaction terms with multitrait glaucoma polygenic risk scores (MTAG PRS) or intraocular pressure (IOP) PRS., Results: A total of 170,815 participants (34.3%) reported current oral health problems, including painful or bleeding gums, toothache, loose teeth, and/or denture wear. A In all, 33,059, 33,004, 14,652, and 14,613 participants were available for analysis of glaucoma, IOP, mRNFL, and mGCIPL, respectively. No association between oral health and glaucoma was identified [odds ratio (OR): 1.04, 95% CI: 0.95-1.14]. IOPs were slightly lower among those with oral disease (-0.08 mm Hg, 95% CI: -0.15, -0.009); specifically, among those with loose teeth ( P =0.03) and denture-wearers ( P <0.0001). mRNFL measurements were lower among those with oral health conditions (-0.14 μm, 95% CI: -0.27, -0.0009), but mGCIPL measurements ( P =0.96) were not significantly different. A PRS for IOP or glaucoma did not modify relations between oral health and IOP or glaucoma ( P for interactions ≥0.17)., Conclusions: Self-reported oral health was not associated with elevated IOP or an increased risk of glaucoma. Future studies should confirm the null association between clinically diagnosed oral health conditions and glaucoma., Competing Interests: Disclosure: J.H.K. received research support from Pfizer. J.L.W. is a consultant for Editas, CRISPR Therapeutics, Broadwing Bio, Regenxbio. L.R.P. is a consultant to Twenty Twenty, Character Bio. The remaining authors declare no conflict of interest., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)
Published: 2024
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42. POU6F2, a risk factor for glaucoma, myopia and dyslexia, labels specific populations of retinal ganglion cells.

Author: Lin F, Li Y, Wang J, Jardines S, King R, Chrenek MA, Wiggs JL, Boatright JH, and Geisert EE
Subjects: Animals, Humans, Mice, Disease Models, Animal, Intraocular Pressure, Mice, Inbred DBA, Mice, Knockout, Risk Factors, Dyslexia genetics, Dyslexia metabolism, Dyslexia pathology, Glaucoma pathology, Glaucoma metabolism, Glaucoma genetics, Myopia pathology, Myopia metabolism, Myopia genetics, Retinal Ganglion Cells pathology, Retinal Ganglion Cells metabolism
Abstract: Pou6f2 is a genetic connection between central corneal thickness (CCT) in the mouse and a risk factor for developing primary open-angle glaucoma. POU6F2 is also a risk factor for several conditions in humans, including glaucoma, myopia, and dyslexia. Recent findings demonstrate that POU6F2-positive retinal ganglion cells (RGCs) comprise a number of RGC subtypes in the mouse, some of which also co-stain for Cdh6 and Hoxd10. These POU6F2-positive RGCs appear to be novel of ON-OFF directionally selective ganglion cells (ooDSGCs) that do not co-stain with CART or SATB2 (typical ooDSGCs markers). These POU6F2-positive cells are sensitive to damage caused by elevated intraocular pressure. In the DBA/2J mouse glaucoma model, heavily-labeled POU6F2 RGCs decrease by 73% at 8 months of age compared to only 22% loss of total RGCs (labeled with RBPMS). Additionally, Pou6f2 -/- mice suffer a significant loss of acuity and spatial contrast sensitivity along with an 11.4% loss of total RGCs. In the rhesus macaque retina, POU6F2 labels the large parasol ganglion cells that form the magnocellular (M) pathway. The association of POU6F2 with the M-pathway may reveal in part its role in human glaucoma, myopia, and dyslexia., (© 2024. The Author(s).)
Published: 2024
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43. Genetic Associations of Primary Angle-Closure Disease: A Systematic Review and Meta-Analysis.

Author: Liang YJ, Wang YY, Rong SS, Chen ZJ, Chen SY, Tham JA, Chan PP, Yam JC, Wiggs JL, Pang CP, Tham CC, and Chen LJ
Subjects: Humans, Genetic Predisposition to Disease, Intraocular Pressure physiology, Glaucoma, Angle-Closure genetics, Glaucoma, Angle-Closure diagnosis, Polymorphism, Single Nucleotide, Genome-Wide Association Study
Abstract: Importance: Effects of genetic variants on primary angle-closure disease remained uncertain., Objective: To systematically review the associations of common single-nucleotide variants (SNVs) and rare coding variants with primary angle-closure disease, its subtypes (including primary angle-closure glaucoma, primary angle-closure suspect, and primary angle-closure) and progression., Data Sources: Eligible studies from PubMed, Embase, and Web of Science were retrieved up to April 3, 2023. SNV information was extracted from eligible reports and 2 genome-wide association studies summary statistics, UK BioBank and FinnGen., Study Selection: Studies providing analyzable genotype or allele data in a case-control design for primary angle-closure disease association and longitudinal case-only design for primary angle-closure disease progression., Data Extraction and Synthesis: PRISMA guidelines were used for literature screening and the Newcastle Ottawa Scale for data quality assessment. Pooled effect size with 95% CIs of SNV associations were calculated using fixed- or random-effect models according to I2 statistics., Main Outcomes and Measures: SNVs reported in 2 or more studies were meta-analyzed to generate pooled odds ratios and P values. Common and rare coding variants from single reports were summarized., Results: Sixty-nine citations were eligible for meta-analysis on overall primary angle-closure disease, involving 206 SNVs in 64 genes or loci. Seventeen SNVs in 15 genes or loci showed associations with primary angle-closure disease, and 15 SNVs in 13 genes or loci showed associations with primary angle-closure glaucoma. Two SNVs, ABCA1 rs2422493 and ZNRF3 rs3178915, were associated only with primary angle-closure disease. Two SNVs, PCMTD1-ST18 rs1015213 and COL11A1 rs3753841, were associated with primary angle-closure suspect, and 1 SNV, MMP9 rs3918249, was associated with primary angle-closure. This systematic review and meta-analysis newly confirmed 7 genes or loci associated with primary angle-closure glaucoma: ATOH7, CALCRL, FBN1, IL6, LOXL1, MMP19, and VAV3. Common and rare coding variants in 16 genes or loci that have been associated with primary angle-closure disease were cataloged. Stratification analysis revealed different primary angle-closure disease-associated genes in different ethnic populations. Only 1 study regarding the genetic association of primary angle-closure glaucoma progression was identified., Conclusions and Relevance: This study revealed the genetic complexity of primary angle-closure disease, involving common SNVs and rare coding variants in more than 30 genes or loci, with ethnic and phenotypic diversities. Further replication, genotype-phenotype correlation, and pathway analyses are warranted.
Published: 2024
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44. Polygenic Risk Scores for Glaucoma Onset in the Ocular Hypertension Treatment Study.

Author: Singh RK, Zhao Y, Elze T, Fingert J, Gordon M, Kass MA, Luo Y, Pasquale LR, Scheetz T, Segrè AV, Wiggs JL, and Zebardast N
Subjects: Humans, Female, Middle Aged, Male, Genetic Risk Score, Risk Factors, Intraocular Pressure, Glaucoma, Open-Angle diagnosis, Ocular Hypertension diagnosis
Abstract: Importance: Primary open-angle glaucoma (POAG) is a highly heritable disease, with 127 identified risk loci to date. Polygenic risk score (PRS) may provide a clinically useful measure of aggregate genetic burden and improve patient risk stratification., Objective: To assess whether a PRS improves prediction of POAG onset in patients with ocular hypertension., Design, Setting, and Participants: This was a post hoc analysis of the Ocular Hypertension Treatment Study. Data were collected from 22 US sites with a mean (SD) follow-up of 14.0 (6.9) years. A total of 1636 participants were followed up from February 1994 to December 2008; 1077 participants were enrolled in an ancillary genetics study, of which 1009 met criteria for this analysis. PRS was calculated using summary statistics from the largest cross-ancestry POAG meta-analysis, with weights trained using 8 813 496 variants from 449 186 cross-ancestry participants in the UK Biobank. Data were analyzed from July 2022 to December 2023., Exposures: From February 1994 to June 2002, participants were randomized to either topical intraocular pressure-lowering medication or close observation. After June 2002, both groups received medication., Main Outcomes and Measures: Outcome measures were hazard ratios for POAG onset. Concordance index and time-dependent areas under the receiver operating characteristic curve were used to compare the predictive performance of multivariable Cox proportional hazards models., Results: Of 1009 included participants, 562 (55.7%) were female, and the mean (SD) age was 55.9 (9.3) years. The mean (SD) PRS was significantly higher for 350 POAG converters (0.24 [0.95]) compared with 659 nonconverters (-0.12 [1.00]) (P < .001). POAG risk increased 1.36% (95% CI, 1.08-1.64) with each higher PRS decile, with conversion ranging from 9.52% (95% CI, 7.09-11.95) in the lowest PRS decile to 21.81% (95% CI, 19.37-24.25) in the highest decile. Comparison of low-risk and high-risk PRS tertiles showed a 2.0-fold increase in 20-year POAG risk for participants of European and African ancestries. In the subgroup randomized to delayed treatment, each increase in PRS decile was associated with a 0.52-year (95% CI, 0.01-1.03) decrease in age at diagnosis (P = .047). No significant linear association between PRS and age at POAG diagnosis was present in the early treatment group. Prediction models significantly improved with the addition of PRS as a covariate (C index = 0.77) compared with the Ocular Hypertension Treatment Study baseline model (C index = 0.75) (P < .001). Each 1-SD higher PRS conferred a mean hazard ratio of 1.25 (95% CI, 1.13-1.44) for POAG onset., Conclusions and Relevance: Higher PRS was associated with increased risk for POAG in patients with ocular hypertension. The inclusion of a PRS improved the prediction of POAG onset., Trial Registration: ClinicalTrials.gov Identifier: NCT00000125.
Published: 2024
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45. Phenome- and genome-wide analyses of retinal optical coherence tomography images identify links between ocular and systemic health.

Author: Zekavat SM, Jorshery SD, Rauscher FG, Horn K, Sekimitsu S, Koyama S, Nguyen TT, Costanzo MC, Jang D, Burtt NP, Kühnapfel A, Shweikh Y, Ye Y, Raghu V, Zhao H, Ghassemi M, Elze T, Segrè AV, Wiggs JL, Del Priore L, Scholz M, Wang JC, Natarajan P, and Zebardast N
Subjects: Adult, Humans, Tomography, Optical Coherence, Face, Retina diagnostic imaging, Genome-Wide Association Study, Cardiovascular Diseases
Abstract: The human retina is a multilayered tissue that offers a unique window into systemic health. Optical coherence tomography (OCT) is widely used in eye care and allows the noninvasive, rapid capture of retinal anatomy in exquisite detail. We conducted genotypic and phenotypic analyses of retinal layer thicknesses using macular OCT images from 44,823 UK Biobank participants. We performed OCT layer cross-phenotype association analyses (OCT-XWAS), associating retinal thicknesses with 1866 incident conditions (median 10-year follow-up) and 88 quantitative traits and blood biomarkers. We performed genome-wide association studies (GWASs), identifying inherited genetic markers that influence retinal layer thicknesses and replicated our associations among the LIFE-Adult Study ( N = 6313). Last, we performed a comparative analysis of phenome- and genome-wide associations to identify putative causal links between retinal layer thicknesses and both ocular and systemic conditions. Independent associations with incident mortality were detected for thinner photoreceptor segments (PSs) and, separately, ganglion cell complex layers. Phenotypic associations were detected between thinner retinal layers and ocular, neuropsychiatric, cardiometabolic, and pulmonary conditions. A GWAS of retinal layer thicknesses yielded 259 unique loci. Consistency between epidemiologic and genetic associations suggested links between a thinner retinal nerve fiber layer with glaucoma, thinner PS with age-related macular degeneration, and poor cardiometabolic and pulmonary function with a thinner PS. In conclusion, we identified multiple inherited genetic loci and acquired systemic cardio-metabolic-pulmonary conditions associated with thinner retinal layers and identify retinal layers wherein thinning is predictive of future ocular and systemic conditions.
Published: 2024
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46. Genetic Basis of Pigment Dispersion Syndrome and Pigmentary Glaucoma: An Update and Functional Insights.

Author: Rong S, Yu X, and Wiggs JL
Subjects: Humans, Trabecular Meshwork pathology, Face pathology, Genome-Wide Association Study, Glaucoma, Open-Angle pathology
Abstract: Pigment Dispersion Syndrome (PDS) and Pigmentary Glaucoma (PG) comprise a spectrum of ocular disorders characterized by iris pigment dispersion and trabecular meshwork changes, resulting in increased intraocular pressure and potential glaucomatous optic neuropathy. This review summarizes recent progress in PDS/PG genetics including rare pathogenic protein coding alterations ( PMEL ) and susceptibility loci identified from genome-wide association studies ( GSAP and GRM5/TYR). Areas for future research are also identified, especially the development of efficient model systems. While substantial strides have been made in understanding the genetics of PDS/PG, our review identifies key gaps and outlines the future directions necessary for further advancing this important field of ocular genetics.
Published: 2024
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47. A multi-cohort genome-wide association study in African ancestry individuals reveals risk loci for primary open-angle glaucoma.

Author: Verma SS, Gudiseva HV, Chavali VRM, Salowe RJ, Bradford Y, Guare L, Lucas A, Collins DW, Vrathasha V, Nair RM, Rathi S, Zhao B, He J, Lee R, Zenebe-Gete S, Bowman AS, McHugh CP, Zody MC, Pistilli M, Khachatryan N, Daniel E, Murphy W, Henderer J, Kinzy TG, Iyengar SK, Peachey NS, Taylor KD, Guo X, Chen YI, Zangwill L, Girkin C, Ayyagari R, Liebmann J, Chuka-Okosa CM, Williams SE, Akafo S, Budenz DL, Olawoye OO, Ramsay M, Ashaye A, Akpa OM, Aung T, Wiggs JL, Ross AG, Cui QN, Addis V, Lehman A, Miller-Ellis E, Sankar PS, Williams SM, Ying GS, Cooke Bailey J, Rotter JI, Weinreb R, Khor CC, Hauser MA, Ritchie MD, and O'Brien JM
Subjects: Humans, Genetic Predisposition to Disease, Black People genetics, Polymorphism, Single Nucleotide genetics, Genome-Wide Association Study, Glaucoma, Open-Angle genetics
Abstract: Primary open-angle glaucoma (POAG), the leading cause of irreversible blindness worldwide, disproportionately affects individuals of African ancestry. We conducted a genome-wide association study (GWAS) for POAG in 11,275 individuals of African ancestry (6,003 cases; 5,272 controls). We detected 46 risk loci associated with POAG at genome-wide significance. Replication and post-GWAS analyses, including functionally informed fine-mapping, multiple trait co-localization, and in silico validation, implicated two previously undescribed variants (rs1666698 mapping to DBF4P2; rs34957764 mapping to ROCK1P1) and one previously associated variant (rs11824032 mapping to ARHGEF12) as likely causal. For individuals of African ancestry, a polygenic risk score (PRS) for POAG from our mega-analysis (African ancestry individuals) outperformed a PRS from summary statistics of a much larger GWAS derived from European ancestry individuals. This study quantifies the genetic architecture similarities and differences between African and non-African ancestry populations for this blinding disease., Competing Interests: Declaration of interests J.M.O. is a member of the scientific advisory board of Life Biosciences and a paid consultant of Atheneum Partners, Cerner Enviza (includes Kantar Health), and Calico. A.G.R. holds intellectual property for the use of gene therapy to treat glaucoma. E.M.-E. is a scientific advisor for Avisi and a paid consultant of Aerie Pharmaceuticals, Allergan, Eyenovia, and Thea Pharma. J.L. receives instrument support from Carl Zeiss Meditech, Inc., and Heidelberg Engineering, GmBH; receives research support from Novartis, Inc.; and is a paid consultant at Thea, Inc., Alcon Laboratories, Inc., Johnson & Johnson, Inc., Abbvie, Inc., Carl Zeiss Meditech, Inc., Genetech, Inc., and ONL Therapeutics, Inc., (Copyright © 2023 Elsevier Inc. All rights reserved.)
Published: 2024
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48. Integrating genetic regulation and single-cell expression with GWAS prioritizes causal genes and cell types for glaucoma.

Author: Hamel AR, Yan W, Rouhana JM, Monovarfeshani A, Jiang X, Mehta PA, Advani J, Luo Y, Liang Q, Rajasundaram S, Shrivastava A, Duchinski K, Mantena S, Wang J, van Zyl T, Pasquale LR, Swaroop A, Gharahkhani P, Khawaja AP, MacGregor S, Chen R, Vitart V, Sanes JR, Wiggs JL, and Segrè AV
Subjects: Humans, Genome-Wide Association Study, Gene Expression Regulation, Causality, Glaucoma, Open-Angle genetics, Glaucoma genetics
Abstract: Primary open-angle glaucoma (POAG), characterized by retinal ganglion cell death, is a leading cause of irreversible blindness worldwide. However, its molecular and cellular causes are not well understood. Elevated intraocular pressure (IOP) is a major risk factor, but many patients have normal IOP. Colocalization and Mendelian randomization analysis of >240 POAG and IOP genome-wide association study (GWAS) loci and overlapping expression and splicing quantitative trait loci (e/sQTLs) in 49 GTEx tissues and retina prioritizes causal genes for 60% of loci. These genes are enriched in pathways implicated in extracellular matrix organization, cell adhesion, and vascular development. Analysis of single-nucleus RNA-seq of glaucoma-relevant eye tissues reveals that the POAG and IOP colocalizing genes and genome-wide associations are enriched in specific cell types in the aqueous outflow pathways, retina, optic nerve head, peripapillary sclera, and choroid. This study nominates IOP-dependent and independent regulatory mechanisms, genes, and cell types that may contribute to POAG pathogenesis., (© 2024. The Author(s).)
Published: 2024
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49. WITHDRAWN: Genome-wide risk prediction of primary open-angle glaucoma across multiple ancestries.

Author: Gharahkhani P, He W, Han X, Ong JS, Rentería ME, Wiggs JL, Khawaja AP, Trzaskowski M, Mackey DA, Craig JE, Hewitt AW, MacGregor S, and Wu Y
Abstract: This manuscript has been withdrawn by medRxiv following a formal request by the QIMR Berghofer Medical Research Institute Research Integrity Office owing to lack of author consent.
Published: 2023
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50. Association between Diabetes and Exfoliation Syndrome: A Systematic Review and Meta-Analysis of Observational Studies.

Author: Yu M, Hwang HH, Wiggs JL, Pasquale LR, and Kang JH
Published: 2023
Full Text: View/download PDF

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