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2. Immune response to pneumococcal polysaccharides 4 and 14 in elderly and young adults. I Antibody concentrations, avidity and functional activity

Author

Carlone George M, Romero-Steiner Sandra, Khuder Sadik, Shriner Anne K, Smithson S Louise, Kolibab Kris, and Westerink MA Julie

Subjects
Immunologic diseases. Allergy, RC581-607, Geriatrics, RC952-954.6
Abstract

Abstract Streptococcus pneumoniae is a serious worldwide pathogen and the focus of numerous vaccine development projects. Currently the most widely accepted surrogate marker for evaluating the efficacy of a given vaccine is to utilize ELISA. Measurement of antibody concentration by ELISA without reduction in cross-reactive antibodies causes an overestimation of antibody concentration and therefore protection, this is most notable in the aged, an at risk group for this infection. We compared the immune response to the pneumococcal polysaccharides (PPS) 4 and 14 of 20 young to 20 elderly adults. Pre-and post-vaccination IgG antibody concentrations and antibody avidity against PPS4 and PPS14 were measured using two different enzyme-linked immunosorbant assay (ELISA) absorption protocols. All sera were pre-absorbed with either cell-wall polysaccharide (CPS), or CPS and serotype 22F polysaccharide. Pre- and post-vaccination IgG antibody concentrations for serotype 4, but not 14, were significantly lowered with the additional absorption with serotype 22F polysaccharide in both age groups. Young and elderly demonstrated a significant increase from pre- to post-immunization antibody concentration, using either absorption method; and opsonophagocytic antibody titers in response to both PPS4 and PPS14. The correlation coefficients between ELISA and opsonophagocytic assays were improved by additional absorption with serotype 22F in response to serotype 4, but not serotype 14 in all age groups. Opsonophagocytic antibody titers in a sub-group of elderly (>77 years of age) were significantly lower than the opsonophagocytic antibody concentrations in young adults. These results suggest the importance of eliminating cross-reactive antibodies from ELISA measurements by absorption of serum and an age-related impairment in the antibody response to pneumococcal polysaccharides.

Published
2005
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5. De novo variants in CNOT3 cause a variable neurodevelopmental disorder

Author

Martin, R., Splitt, M., Genevieve, D., Aten, E., Collins, A., de Bie, C. I., Faivre, L., Foulds, N., Giltay, J., Ibitoye, R., Joss, S., Kennedy, J., Kerr, B., Kivuva, E., Koopmans, M., Newbury-Ecob, R., Jean-Marçais, N., Peeters, E. A. J., Smithson, S., Tomkins, S., Tranmauthem, F., Piton, A., and van Haeringen, A.

Published
2019
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7. POU3F3-related disorder: Defining the phenotype and expanding the molecular spectrum

Author

Rossi, A, Snijders Blok, L., Neuser, S., Klöckner, C., Platzer, K., Faivre, L.O., Weigand, H., Dentici, M.L., Tartaglia, M., Niceta, M., Alfieri, P., Srivastava, S., Coulter, D., Smith, Lacey, Vinorum, K., Cappuccio, G., Brunetti-Pierri, N., Torun, D., Arslan, M., Lauridsen, M.F., Murch, O., Irving, R., Lynch, S.A., Mehta, S.G., Carmichael, J., Zonneveld-Huijssoon, E., Vries, B.B. de, Kleefstra, T., Johannesen, K.M., Westphall, I.T., Hughes, S.S., Smithson, S., Evans, J., Dudding-Byth, T., Simon, M., Binsbergen, E. van, Herkert, J.C., Beunders, G., Oppermann, H., Bakal, M., Møller, R.S., Rubboli, G., Bayat, A., Rossi, A, Snijders Blok, L., Neuser, S., Klöckner, C., Platzer, K., Faivre, L.O., Weigand, H., Dentici, M.L., Tartaglia, M., Niceta, M., Alfieri, P., Srivastava, S., Coulter, D., Smith, Lacey, Vinorum, K., Cappuccio, G., Brunetti-Pierri, N., Torun, D., Arslan, M., Lauridsen, M.F., Murch, O., Irving, R., Lynch, S.A., Mehta, S.G., Carmichael, J., Zonneveld-Huijssoon, E., Vries, B.B. de, Kleefstra, T., Johannesen, K.M., Westphall, I.T., Hughes, S.S., Smithson, S., Evans, J., Dudding-Byth, T., Simon, M., Binsbergen, E. van, Herkert, J.C., Beunders, G., Oppermann, H., Bakal, M., Møller, R.S., Rubboli, G., and Bayat, A.

Abstract

Item does not contain fulltext, POU3F3 variants cause developmental delay, behavioral problems, hypotonia and dysmorphic features. We investigated the phenotypic and genetic landscape, and genotype-phenotype correlations in individuals with POU3F3-related disorders. We recruited unpublished individuals with POU3F3 variants through international collaborations and obtained updated clinical data on previously published individuals. Trio exome sequencing or single exome sequencing followed by segregation analysis were performed in the novel cohort. Functional effects of missense variants were investigated with 3D protein modeling. We included 28 individuals (5 previously published) from 26 families carrying POU3F3 variants; 23 de novo and one inherited from an affected parent. Median age at study inclusion was 7.4 years. All had developmental delay mainly affecting speech, behavioral difficulties, psychiatric comorbidities and dysmorphisms. Additional features included gastrointestinal comorbidities, hearing loss, ophthalmological anomalies, epilepsy, sleep disturbances and joint hypermobility. Autism, hearing and eye comorbidities, dysmorphisms were more common in individuals with truncating variants, whereas epilepsy was only associated with missense variants. In silico structural modeling predicted that all (likely) pathogenic variants destabilize the DNA-binding region of POU3F3. Our study refined the phenotypic and genetic landscape of POU3F3-related disorders, it reports the functional properties of the identified pathogenic variants, and delineates some genotype-phenotype correlations.

Published
2023

8. Heterozygous ANKRD17 loss-of-function variants cause a syndrome with intellectual disability, speech delay, and dysmorphism

Author

Chopra, M., McEntagart, M., Clayton-Smith, J., Platzer, K., Shukla, A., Girisha, K.M., Kaur, A., Kaur, P., Pfundt, R., Veenstra-Knol, H., Mancini, G.M.S., Cappuccio, G., Brunetti-Pierri, N., Kortum, F., Hempel, M., Denecke, J., Lehman, A., Kleefstra, T., Stuurman, K.E., Wilke, M., Thompson, M.L., Bebin, E.M., Bijlsma, E.K., Hoffer, M.J.V., Peeters-Scholte, C., Slavotinek, A., Weiss, W.A., Yip, T., Hodoglugil, U., Whittle, A., Monda, J., Neira, J., Yang, S., Kirby, A., Pinz, H., Lechner, R., Sleutels, F., Helbig, I., McKeown, S., Helbig, K., Willaert, R., Juusola, J., Semotok, J., Hadonou, M., Short, J., Yachelevich, N., Lala, S., Fernandez-Jaen, A., Pelayo, J.P., Klockner, C., Kamphausen, S.B., Abou Jamra, R., Arelin, M., Innes, A.M., Niskakoski, A., Amin, S., Williams, M., Evans, J., Smithson, S., Smedley, D., Burca, A., Kini, U., Delatycki, M.B., Gallacher, L., Yeung, A., Pais, L., Field, M., Martin, E., Charles, P., Courtin, T., Keren, B., Iascone, M., Cereda, A., Poke, G., Abadie, V., Chalouhi, C., Parthasarathy, P., Halliday, B.J., Robertson, S.P., Lyonnet, S., Amiel, J., Gordon, C.T., CAUSES Study, Genomics England Res Consortium, Clinical Genetics, Chopra, Maya, Mcentagart, Meriel, Clayton-Smith, Jill, Platzer, Konrad, Shukla, Anju, Girisha, Katta M, Kaur, Anupriya, Kaur, Parneet, Pfundt, Rolph, Veenstra-Knol, Hermine, Mancini, Grazia M S, Cappuccio, Gerarda, Brunetti-Pierri, Nicola, Kortüm, Fanny, Hempel, Maja, Denecke, Jona, Lehman, Anna, Kleefstra, Tjitske, Stuurman, Kyra E, Wilke, Martina, Thompson, Michelle L, Bebin, E Martina, Bijlsma, Emilia K, Hoffer, Mariette J V, Peeters-Scholte, Cacha, Slavotinek, Anne, Weiss, William A, Yip, Tiffany, Hodoglugil, Ugur, Whittle, Amy, Dimonda, Janette, Neira, Juanita, Yang, Sandra, Kirby, Amelia, Pinz, Hailey, Lechner, Rosan, Sleutels, Frank, Helbig, Ingo, Mckeown, Sarah, Helbig, Katherine, Willaert, Rebecca, Juusola, Jane, Semotok, Jennifer, Hadonou, Medard, Short, John, Yachelevich, Naomi, Lala, Sajel, Fernández-Jaen, Alberto, Pelayo, Janvier Porta, Klöckner, Chiara, Kamphausen, Susanne B, Abou Jamra, Rami, Arelin, Maria, Innes, A Micheil, Niskakoski, Anni, Amin, Sam, Williams, Maggie, Evans, Julie, Smithson, Sarah, Smedley, Damian, de Burca, Anna, Kini, Usha, Delatycki, Martin B, Gallacher, Lyndon, Yeung, Alison, Pais, Lynn, Field, Michael, Martin, Ellenore, Charles, Perrine, Courtin, Thoma, Keren, Bori, Iascone, Maria, Cereda, Anna, Poke, Gemma, Abadie, Véronique, Chalouhi, Christel, Parthasarathy, Padmini, Halliday, Benjamin J, Robertson, Stephen P, Lyonnet, Stanisla, Amiel, Jeanne, and Gordon, Christopher T

Subjects
Male, speech delay, Haploinsufficiency, Craniofacial Abnormalities, 0302 clinical medicine, Neurodevelopmental disorder, Loss of Function Mutation, Intellectual disability, Missense mutation, Ankyrin, Child, Genetics (clinical), Genetics, chemistry.chemical_classification, 0303 health sciences, RNA-Binding Proteins, Syndrome, Pedigree, ANKYRIN REPEAT, Phenotype, Child, Preschool, Speech delay, Female, medicine.symptom, Signal Transduction, Adult, Heterozygote, Adolescent, MASK, ANKRD17, dysmorphism, Biology, 03 medical and health sciences, Young Adult, All institutes and research themes of the Radboud University Medical Center, SDG 3 - Good Health and Well-being, Intellectual Disability, Report, medicine, Humans, Language Development Disorders, Yorkie, Loss function, 030304 developmental biology, HIPPO PATHWAY, Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7], MUTATIONS, Infant, medicine.disease, GENE, neurodevelopmental syndrome, chemistry, Ankyrin repeat, 030217 neurology & neurosurgery
Abstract

ANKRD17 is an ankyrin repeat-containing protein thought to play a role in cell cycle progression, whose ortholog in Drosophila functions in the Hippo pathway as a co-factor of Yorkie. Here, we delineate a neurodevelopmental disorder caused by de novo heterozygous ANKRD17 variants. The mutational spectrum of this cohort of 34 individuals from 32 families is highly suggestive of haploinsufficiency as the underlying mechanism of disease, with 21 truncating or essential splice site variants, 9 missense variants, 1 in-frame insertion-deletion, and 1 microdeletion (1.16 Mb). Consequently, our data indicate that loss of ANKRD17 is likely the main cause of phenotypes previously associated with large multi-gene chromosomal aberrations of the 4q13.3 region. Protein modeling suggests that most of the missense variants disrupt the stability of the ankyrin repeats through alteration of core structural residues. The major phenotypic characteristic of our cohort is a variable degree of developmental delay/intellectual disability, particularly affecting speech, while additional features include growth failure, feeding difficulties, non-specific MRI abnormalities, epilepsy and/or abnormal EEG, predisposition to recurrent infections (mostly bacterial), ophthalmological abnormalities, gait/balance disturbance, and joint hypermobility. Moreover, many individuals shared similar dysmorphic facial features. Analysis of single-cell RNA-seq data from the developing human telencephalon indicated ANKRD17 expression at multiple stages of neurogenesis, adding further evidence to the assertion that damaging ANKRD17 variants cause a neurodevelopmental disorder.

Published
2021

9. Recurrent de novo missense variants across multiple histone H4 genes underlie a neurodevelopmental syndrome

Author

Tessadori, F., Duran, K., Knapp, K., Fellner, M., Smithson, S., Meireles, A. Beleza, Elting, M.W., Waisfisz, Q., O'Donnell-Luria, A., Nowak, C., Douglas, J., Ronan, A., Brunet, T., Kotzaeridou, U., Svihovec, S., Saenz, M.S., Thiffault, I., Viso, F. Del, Devine, P., Rego, S., Tenney, J., Haeringen, A. van, Ruivenkamp, C.A.L., Koene, S., Robertson, S.P., Deshpande, C., Pfundt, R.P., Verbeek, N., Kamp, J.M. van de, Weiss, J., Ruiz, A., Gabau, E., Banne, E., Pepler, A., Bottani, A., Laurent, S., Guipponi, M., Bijlsma, E., Bruel, A.L., Sorlin, A., Willis, M., Powis, Z., Smol, T., Vincent-Delorme, C., Baralle, D., Colin, E., Revencu, N., Calpena, E., Wilkie, A.O.M., Chopra, M., Cormier-Daire, V., Keren, B., Afenjar, A., Niceta, M., Terracciano, A., Specchio, N., Tartaglia, M., Rio, M. del, Barcia, G., Rondeau, S., Colson, C., Bakkers, J., Mace, P.D., Bicknell, L.S., Haaften, G. van, Tessadori, F., Duran, K., Knapp, K., Fellner, M., Smithson, S., Meireles, A. Beleza, Elting, M.W., Waisfisz, Q., O'Donnell-Luria, A., Nowak, C., Douglas, J., Ronan, A., Brunet, T., Kotzaeridou, U., Svihovec, S., Saenz, M.S., Thiffault, I., Viso, F. Del, Devine, P., Rego, S., Tenney, J., Haeringen, A. van, Ruivenkamp, C.A.L., Koene, S., Robertson, S.P., Deshpande, C., Pfundt, R.P., Verbeek, N., Kamp, J.M. van de, Weiss, J., Ruiz, A., Gabau, E., Banne, E., Pepler, A., Bottani, A., Laurent, S., Guipponi, M., Bijlsma, E., Bruel, A.L., Sorlin, A., Willis, M., Powis, Z., Smol, T., Vincent-Delorme, C., Baralle, D., Colin, E., Revencu, N., Calpena, E., Wilkie, A.O.M., Chopra, M., Cormier-Daire, V., Keren, B., Afenjar, A., Niceta, M., Terracciano, A., Specchio, N., Tartaglia, M., Rio, M. del, Barcia, G., Rondeau, S., Colson, C., Bakkers, J., Mace, P.D., Bicknell, L.S., and Haaften, G. van

Abstract

Contains fulltext : 252023.pdf (Publisher’s version ) (Open Access), Chromatin is essentially an array of nucleosomes, each of which consists of the DNA double-stranded fiber wrapped around a histone octamer. This organization supports cellular processes such as DNA replication, DNA transcription, and DNA repair in all eukaryotes. Human histone H4 is encoded by fourteen canonical histone H4 genes, all differing at the nucleotide level but encoding an invariant protein. Here, we present a cohort of 29 subjects with de novo missense variants in six H4 genes (H4C3, H4C4, H4C5, H4C6, H4C9, and H4C11) identified by whole-exome sequencing and matchmaking. All individuals present with neurodevelopmental features of intellectual disability and motor and/or gross developmental delay, while non-neurological features are more variable. Ten amino acids are affected, six recurrently, and are all located within the H4 core or C-terminal tail. These variants cluster to specific regions of the core H4 globular domain, where protein-protein interactions occur with either other histone subunits or histone chaperones. Functional consequences of the identified variants were evaluated in zebrafish embryos, which displayed abnormal general development, defective head organs, and reduced body axis length, providing compelling evidence for the causality of the reported disorder(s). While multiple developmental syndromes have been linked to chromatin-associated factors, missense-bearing histone variants (e.g., H3 oncohistones) are only recently emerging as a major cause of pathogenicity. Our findings establish a broader involvement of H4 variants in developmental syndromes.

Published
2022

15. Refining the Primrose syndrome phenotype: A study of five patients with ZBTB20 de novo variants and a review of the literature

Author

Cleaver, RJ, Berg, J, Craft, E, Foster, A, Gibbons, RJ, Hobson, E, Lachlan, K, Naik, S, Sampson, JR, Sharif, S, Smithson, S, Study, Deciphering Developmental Disorders, Parker, MJ, and Tatton-Brown, K

Subjects
Male, medicine.medical_specialty, Genotype, Nerve Tissue Proteins, Corpus callosum, Intellectual Disability, Intellectual disability, Genetics, Humans, Medicine, Missense mutation, Abnormalities, Multiple, Genetic Predisposition to Disease, Child, Ear Diseases, Genetic Association Studies, Genetics (clinical), Exome sequencing, business.industry, Macrocephaly, Calcinosis, Facies, Genetic Variation, Primrose syndrome, medicine.disease, Magnetic Resonance Imaging, Dermatology, Hypotonia, Muscular Atrophy, Phenotype, Genetic Loci, Child, Preschool, Mutation, Female, Sensorineural hearing loss, medicine.symptom, business, Transcription Factors
Abstract

Primrose syndrome is a rare autosomal dominant condition caused by heterozygous missense variants within ZBTB20. Through an exome sequencing approach (as part of the Deciphering Developmental Disorders [DDD] study) we have identified five unrelated individuals with previously unreported, de novo ZBTB20 pathogenic missense variants. All five missense variants targeted the C2H2 zinc finger domains. This genotype-up approach has allowed further refinement of the Primrose syndrome phenotype. Major characteristics (>90% individuals) include an intellectual disability (most frequently in the moderate range), a recognizable facial appearance and brain MRI abnormalities, particularly abnormalities of the corpus callosum. Other frequent clinical associations (in 50-90% individuals) include sensorineural hearing loss (83%), hypotonia (78%), cryptorchidism in males (75%), macrocephaly (72%), behavioral issues (56%), and dysplastic/hypoplastic nails (57%). Based upon these clinical data we discuss our current management of patients with Primrose syndrome.

Published
2019

16. Large-scale discovery of novel genetic causes of developmental disorders

Author

Fitzgerald, T. W., Gerety, S. S., Jones, W. D., van Kogelenberg, M., King, D. A., McRae, J., Morley, K. I., Parthiban, V., Al-Turki, S., Ambridge, K., Barrett, D. M., Bayzetinova, T., Clayton, S., Coomber, E. L., Gribble, S., Jones, P., Krishnappa, N., Mason, L. E., Middleton, A., Miller, R., Prigmore, E., Rajan, D., Sifrim, A., Tivey, A. R., Ahmed, M., Akawi, N., Andrews, R., Anjum, U., Archer, H., Armstrong, R., Balasubramanian, M., Banerjee, R., Baralle, D., Batstone, P., Baty, D., Bennett, C., Berg, J., Bernhard, B., Bevan, A. P., Blair, E., Blyth, M., Bohanna, D., Bourdon, L., Bourn, D., Brady, A., Bragin, E., Brewer, C., Brueton, L., Brunstrom, K., Bumpstead, S. J., Bunyan, D. J., Burn, J., Burton, J., Canham, N., Castle, B., Chandler, K., Clasper, S., Clayton-Smith, J., Cole, T., Collins, A., Collinson, M. N., Connell, F., Cooper, N., Cox, H., Cresswell, L., Cross, G., Crow, Y., DʼAlessandro, M., Dabir, T., Davidson, R., Davies, S., Dean, J., Deshpande, C., Devlin, G., Dixit, A., Dominiczak, A., Donnelly, C., Donnelly, D., Douglas, A., Duncan, A., Eason, J., Edkins, S., Ellard, S., Ellis, P., Elmslie, F., Evans, K., Everest, S., Fendick, T., Fisher, R., Flinter, F., Foulds, N., Fryer, A., Fu, B., Gardiner, C., Gaunt, L., Ghali, N., Gibbons, R., Pereira, Gomes S. L., Goodship, J., Goudie, D., Gray, E., Greene, P., Greenhalgh, L., Harrison, L., Hawkins, R., Hellens, S., Henderson, A., Hobson, E., Holden, S., Holder, S., Hollingsworth, G., Homfray, T., Humphreys, M., Hurst, J., Ingram, S., Irving, M., Jarvis, J., Jenkins, L., Johnson, D., Jones, D., Jones, E., Josifova, D., Joss, S., Kaemba, B., Kazembe, S., Kerr, B., Kini, U., Kinning, E., Kirby, G., Kirk, C., Kivuva, E., Kraus, A., Kumar, D., Lachlan, K., Lam, W., Lampe, A., Langman, C., Lees, M., Lim, D., Lowther, G., Lynch, S. A., Magee, A., Maher, E., Mansour, S., Marks, K., Martin, K., Maye, U., McCann, E., McConnell, V., McEntagart, M., McGowan, R., McKay, K., McKee, S., McMullan, D. J., McNerlan, S., Mehta, S., Metcalfe, K., Miles, E., Mohammed, S., Montgomery, T., Moore, D., Morgan, S., Morris, A., Morton, J., Mugalaasi, H., Murday, V., Nevitt, L., Newbury-Ecob, R., Norman, A., OʼShea, R., Ogilvie, C., Park, S., Parker, M. J., Patel, C., Paterson, J., Payne, S., Phipps, J., Pilz, D. T., Porteous, D., Pratt, N., Prescott, K., Price, S., Pridham, A., Procter, A., Purnell, H., Ragge, N., Rankin, J., Raymond, L., Rice, D., Robert, L., Roberts, E., Roberts, G., Roberts, J., Roberts, P., Ross, A., Rosser, E., Saggar, A., Samant, S., Sandford, R., Sarkar, A., Schweiger, S., Scott, C., Scott, R., Selby, A., Seller, A., Sequeira, C., Shannon, N., Sharif, S., Shaw-Smith, C., Shearing, E., Shears, D., Simonic, I., Simpkin, D., Singzon, R., Skitt, Z., Smith, A., Smith, B., Smith, K., Smithson, S., Sneddon, L., Splitt, M., Squires, M., Stewart, F., Stewart, H., Suri, M., Sutton, V., Swaminathan, G. J., Sweeney, E., Tatton-Brown, K., Taylor, C., Taylor, R., Tein, M., Temple, I. K., Thomson, J., Tolmie, J., Torokwa, A., Treacy, B., Turner, C., Turnpenny, P., Tysoe, C., Vandersteen, A., Vasudevan, P., Vogt, J., Wakeling, E., Walker, D., Waters, J., Weber, A., Wellesley, D., Whiteford, M., Widaa, S., Wilcox, S., Williams, D., Williams, N., Woods, G., Wragg, C., Wright, M., Yang, F., Yau, M., Carter, N. P., Parker, M., Firth, H. V., FitzPatrick, D. R., Wright, C. F., Barrett, J. C., and Hurles, M. E.

Published
2015
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17. Unplanned Cesarean delivery is associated with risk for postpartum depressive symptoms in the immediate postpartum period.

Author

Smithson, S., Mirocha, J., Horgan, R., Graebe, R., Massaro, R., and Accortt, E.

Abstract

Postpartum depression (PPD) is a common pregnancy complication. The association between cesarean delivery (CD) and PPD has shown conflicting results in prior studies, although emergent CD appears to be a clear risk factor. Establishing PPD risk is critical and may, however, be related to the unplanned nature of the CD, rather than the surgery itself. Our objective was to determine whether women who underwent unplanned CD were more likely than those with vaginal delivery to have higher depressive symptoms and thus screen positive for PPD risk in the immediate postpartum period. This cohort study was conducted at a community medical center using data for deliveries between 8/2015–1/2016. Women were screened in the hospital for depressive symptoms (PPD risk) using the Edinburgh Postnatal Depression Scale (EPDS) within 4 days post-delivery. Logistic regression, adjusting for maternal race/ethnicity and parity, was performed to evaluate the association between delivery route (vaginal vs planned vs unplanned CD) and PPD risk (EPDS ≥ 10). A total of 2094 women had complete data for analysis. Overall, 44 women (2.1%) screened positive for PPD risk. Logistic regression results showed that unplanned CD was significantly associated with PPD risk (OR = 2.28, 95% CI 1.13–4.57, p =.022), after adjusting for parity and race/ethnicity. Planned CD was not associated with PPD risk. Unplanned CD may be an independent risk factor for PPD risk in the immediate postpartum period. This finding might explain why some previous studies have demonstrated different results with regards to risk of CD where the unplanned nature of the delivery was not accounted for. [ABSTRACT FROM AUTHOR]

Published
2022
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18. Genotype-phenotype correlations and novel molecular insights into the DHX30-associated neurodevelopmental disorders

Author

Mannucci, I., Dang, N.D.P., Huber, H, Murry, J.B., Abramson, J., Althoff, T., Banka, S., Baynam, G., Bearden, D., Beleza-Meireles, A., Benke, P.J., Berland, S., Bierhals, T., Bilan, F., Bindoff, Laurence, Braathen, G.J., Busk, O.L., Chenbhanich, J., Denecke, J., Escobar, L.F., Estes, C., Fleischer, J., Groepper, D., Haaxma, C.A., Hempel, M., Holler-Managan, Y., Houge, G., Jackson, A., Kellogg, L., Keren, B., Kiraly-Borri, C., Kraus, C., Kubisch, C., Guyader, G. Le, Ljungblad, U.W., Brenman, L.M., Martinez-Agosto, J.A., Might, M., Miller, D.T., Minks, K.Q., Moghaddam, B., Nava, C., Nelson, S.F., Parant, J.M., Prescott, T., Rajabi, F., Randrianaivo, H., Reiter, S.F., Schuurs-Hoeijmakers, J.H.M., Shieh, P.B., Slavotinek, A., Smithson, S., Stegmann, A.P.A., Tomczak, K., Tveten, K., Wang, J, Whitlock, J.H., Zweier, C., McWalter, K., Juusola, J., Quintero-Rivera, F., Fischer, U., Yeo, N.C., Kreienkamp, H.J., Lessel, D., Mannucci, I., Dang, N.D.P., Huber, H, Murry, J.B., Abramson, J., Althoff, T., Banka, S., Baynam, G., Bearden, D., Beleza-Meireles, A., Benke, P.J., Berland, S., Bierhals, T., Bilan, F., Bindoff, Laurence, Braathen, G.J., Busk, O.L., Chenbhanich, J., Denecke, J., Escobar, L.F., Estes, C., Fleischer, J., Groepper, D., Haaxma, C.A., Hempel, M., Holler-Managan, Y., Houge, G., Jackson, A., Kellogg, L., Keren, B., Kiraly-Borri, C., Kraus, C., Kubisch, C., Guyader, G. Le, Ljungblad, U.W., Brenman, L.M., Martinez-Agosto, J.A., Might, M., Miller, D.T., Minks, K.Q., Moghaddam, B., Nava, C., Nelson, S.F., Parant, J.M., Prescott, T., Rajabi, F., Randrianaivo, H., Reiter, S.F., Schuurs-Hoeijmakers, J.H.M., Shieh, P.B., Slavotinek, A., Smithson, S., Stegmann, A.P.A., Tomczak, K., Tveten, K., Wang, J, Whitlock, J.H., Zweier, C., McWalter, K., Juusola, J., Quintero-Rivera, F., Fischer, U., Yeo, N.C., Kreienkamp, H.J., and Lessel, D.

Abstract

Contains fulltext : 245060.pdf (Publisher’s version ) (Open Access), BACKGROUND: We aimed to define the clinical and variant spectrum and to provide novel molecular insights into the DHX30-associated neurodevelopmental disorder. METHODS: Clinical and genetic data from affected individuals were collected through Facebook-based family support group, GeneMatcher, and our network of collaborators. We investigated the impact of novel missense variants with respect to ATPase and helicase activity, stress granule (SG) formation, global translation, and their effect on embryonic development in zebrafish. SG formation was additionally analyzed in CRISPR/Cas9-mediated DHX30-deficient HEK293T and zebrafish models, along with in vivo behavioral assays. RESULTS: We identified 25 previously unreported individuals, ten of whom carry novel variants, two of which are recurrent, and provide evidence of gonadal mosaicism in one family. All 19 individuals harboring heterozygous missense variants within helicase core motifs (HCMs) have global developmental delay, intellectual disability, severe speech impairment, and gait abnormalities. These variants impair the ATPase and helicase activity of DHX30, trigger SG formation, interfere with global translation, and cause developmental defects in a zebrafish model. Notably, 4 individuals harboring heterozygous variants resulting either in haploinsufficiency or truncated proteins presented with a milder clinical course, similar to an individual harboring a de novo mosaic HCM missense variant. Functionally, we established DHX30 as an ATP-dependent RNA helicase and as an evolutionary conserved factor in SG assembly. Based on the clinical course, the variant location, and type we establish two distinct clinical subtypes. DHX30 loss-of-function variants cause a milder phenotype whereas a severe phenotype is caused by HCM missense variants that, in addition to the loss of ATPase and helicase activity, lead to a detrimental gain-of-function with respect to SG formation. Behavioral characterization of dhx30-deficient

Published
2021

21. Development, behaviour and sensory processing in Marshall–Smith syndrome and Malan syndrome: phenotype comparison in two related syndromes

Author

Mulder, P. A., van Balkom, I. D. C., Landlust, A. M., Priolo, M., Menke, L. A., Acero, I. H., Alkuraya, F. S., Arias, P., Bernardini, L., Bijlsma, E. K., Cole, T., Coubes, C., Dapia, I., Davies, S., Di Donato, N., Elcioglu, N. H., Fahrner, J. A., Foster, A., Gonzalez, N. G., Huber, I., Iascone, M., Kaiser, A. -S., Kamath, A., Kooblall, K., Lapunzina, P., Liebelt, J., Lynch, S. A., Maas, S. M., Mammi, C., Mathijssen, I. B., Mckee, S., Mirzaa, G. M., Montgomery, T., Neubauer, D., Neumann, T. E., Pintomalli, L., Pisanti, M. A., Plomp, A. S., Price, S., Salter, C., Santos-Simarro, F., Sarda, P., Schanze, D., Segovia, M., Shaw-Smith, C., Smithson, S., Suri, M., Tatton-Brown, K., Tenorio, J., Thakker, R. V., Valdez, R. M., Van Haeringen, A., Van Hagen, J. M., Zenker, M., Zollino, Marcella, Dunn, W. W., Piening, S., Hennekam, R. C., Zollino M. (ORCID:0000-0003-4871-9519), Mulder, P. A., van Balkom, I. D. C., Landlust, A. M., Priolo, M., Menke, L. A., Acero, I. H., Alkuraya, F. S., Arias, P., Bernardini, L., Bijlsma, E. K., Cole, T., Coubes, C., Dapia, I., Davies, S., Di Donato, N., Elcioglu, N. H., Fahrner, J. A., Foster, A., Gonzalez, N. G., Huber, I., Iascone, M., Kaiser, A. -S., Kamath, A., Kooblall, K., Lapunzina, P., Liebelt, J., Lynch, S. A., Maas, S. M., Mammi, C., Mathijssen, I. B., Mckee, S., Mirzaa, G. M., Montgomery, T., Neubauer, D., Neumann, T. E., Pintomalli, L., Pisanti, M. A., Plomp, A. S., Price, S., Salter, C., Santos-Simarro, F., Sarda, P., Schanze, D., Segovia, M., Shaw-Smith, C., Smithson, S., Suri, M., Tatton-Brown, K., Tenorio, J., Thakker, R. V., Valdez, R. M., Van Haeringen, A., Van Hagen, J. M., Zenker, M., Zollino, Marcella, Dunn, W. W., Piening, S., Hennekam, R. C., and Zollino M. (ORCID:0000-0003-4871-9519)

Abstract

Background: Ultrarare Marshall–Smith and Malan syndromes, caused by changes of the gene nuclear factor I X (NFIX), are characterised by intellectual disability (ID) and behavioural problems, although questions remain. Here, development and behaviour are studied and compared in a cross-sectional study, and results are presented with genetic findings. Methods: Behavioural phenotypes are compared of eight individuals with Marshall-Smith syndrome (three male individuals) and seven with Malan syndrome (four male individuals). Long-term follow-up assessment of cognition and adaptive behaviour was possible in three individuals with Marshall–Smith syndrome. Results: Marshall–Smith syndrome individuals have more severe ID, less adaptive behaviour, more impaired speech and less reciprocal interaction compared with individuals with Malan syndrome. Sensory processing difficulties occur in both syndromes. Follow-up measurement of cognition and adaptive behaviour in Marshall–Smith syndrome shows different individual learning curves over time. Conclusions: Results show significant between and within syndrome variability. Different NFIX variants underlie distinct clinical phenotypes leading to separate entities. Cognitive, adaptive and sensory impairments are common in both syndromes and increase the risk of challenging behaviour. This study highlights the value of considering behaviour within developmental and environmental context. To improve quality of life, adaptations to environment and treatment are suggested to create a better person-environment fit.

Published
2020

26. Development, behaviour and sensory processing in Marshall–Smith syndrome and Malan syndrome: phenotype comparison in two related syndromes

Author

Mulder, P. A., primary, Balkom, I. D. C., additional, Landlust, A. M., additional, Priolo, M., additional, Menke, L. A., additional, Acero, I. H., additional, Alkuraya, F. S., additional, Arias, P., additional, Bernardini, L., additional, Bijlsma, E. K., additional, Cole, T., additional, Coubes, C., additional, Dapia, I., additional, Davies, S., additional, Di Donato, N., additional, Elcioglu, N. H., additional, Fahrner, J. A., additional, Foster, A., additional, González, N. G., additional, Huber, I., additional, Iascone, M., additional, Kaiser, A.‐S., additional, Kamath, A., additional, Kooblall, K., additional, Lapunzina, P., additional, Liebelt, J., additional, Lynch, S. A., additional, Maas, S. M., additional, Mammì, C., additional, Mathijssen, I. B., additional, McKee, S., additional, Mirzaa, G. M., additional, Montgomery, T., additional, Neubauer, D., additional, Neumann, T. E., additional, Pintomalli, L., additional, Pisanti, M. A., additional, Plomp, A. S., additional, Price, S., additional, Salter, C., additional, Santos‐Simarro, F., additional, Sarda, P., additional, Schanze, D., additional, Segovia, M., additional, Shaw‐Smith, C., additional, Smithson, S., additional, Suri, M., additional, Tatton‐Brown, K., additional, Tenorio, J., additional, Thakker, R. V., additional, Valdez, R. M., additional, Van Haeringen, A., additional, Van Hagen, J. M., additional, Zenker, M., additional, Zollino, M., additional, Dunn, W. W., additional, Piening, S., additional, and Hennekam, R. C., additional

Published
2020
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30. Towards the treatment of Cantu syndrome

Author

Haaften, G., Nichols, C. G., Grange, D. K., Haelst, M. M., Smithson, S. F., Scurr, I., Kirk, E. P., Remedi, M. S., Kovacs, A., Jeroen Bakkers, Tessadori, F., Savelberg, S., Harter, T., Halabi, C. M., Huang, Y., Mcclenaghan, C., Roessler, H. I., Clinical genetics, Amsterdam Neuroscience - Complex Trait Genetics, and Amsterdam Reproduction & Development

Published
2019

31. Deep phenotyping of fourteen new patients with IQSEC2 variants, including monozygotic twins of discordant phenotype

Author

Radley, J.A., O'Sullivan, R.B.G., Turton, S.E., Cox, H., Vogt, J., Morton, J., Jones, E., Smithson, S., Lachlan, K., Rankin, J., Clayton-Smith, J., Willoughby, J., Elmslie, F.F., Sansbury, F.H., Cooper, N., Study, D.D.D., and Balasubramanian, M.

Abstract

Whole exome sequencing has established IQSEC2 as a neurodevelopmental disability gene. The IQSEC2 variant phenotype includes developmental delay, intellectual disability, epilepsy, hypotonia, autism, developmental regression, microcephaly and stereotypies but is yet to be fully described. Presented here, are 14 new patients with IQSEC2 variants. In addition to the established features, we observed: gait ataxia in 7/9 (77.8%), drooling in 9/14 (64.2%), early feeding difficulties in 7/14 (50%), structural brain abnormalities, in 6/13 (46.2%), brachycephaly in 5/14 (35.7%), and scoliosis and paroxysms of laughter, each in 4/14 (28.6%). We suggest that these are features of the IQSEC2-related disorder. Gastrostomy requirement, plagiocephaly, strabismus and cortical blindness, each seen in 2/14 (14.3%) may also be associated. Shared facial features were noted in 8/14 patients and shared hair patterning was identified in 4/14 patients. This study further delineates the IQSEC2 phenotypic spectrum and supports the notion of an emerging IQSEC2 syndrome. We draw parallels between the IQSEC2-related disorder and the Angelman- / Rett- / Pitt-Hopkins syndrome group of conditions and recommend the addition of IQSEC2 to epilepsy- and developmental delay gene panels. We observed discordant phenotypes in monozygotic twins and apparent gonadal mosaicism, which has implications for recurrence risk counselling in the IQSEC2-related disorder.

Published
2019

32. De novo variants in CNOT3 cause a variable neurodevelopmental disorder

Author

Sectie Morfologie/CMC, Genetica Klinische Genetica, Child Health, Martin, R., Splitt, M., Genevieve, D., Aten, E., Collins, A., de Bie, C. I., Faivre, L., Foulds, N., Giltay, J., Ibitoye, R., Joss, S., Kennedy, J., Kerr, B., Kivuva, E., Koopmans, M., Newbury-Ecob, R., Jean-Marçais, N., Peeters, E. A.J., Smithson, S., Tomkins, S., Tranmauthem, F., Piton, A., van Haeringen, A., Sectie Morfologie/CMC, Genetica Klinische Genetica, Child Health, Martin, R., Splitt, M., Genevieve, D., Aten, E., Collins, A., de Bie, C. I., Faivre, L., Foulds, N., Giltay, J., Ibitoye, R., Joss, S., Kennedy, J., Kerr, B., Kivuva, E., Koopmans, M., Newbury-Ecob, R., Jean-Marçais, N., Peeters, E. A.J., Smithson, S., Tomkins, S., Tranmauthem, F., Piton, A., and van Haeringen, A.

Published
2019

37. Phenotype of CNTNAP1:a study of patients demonstrating a specific severe congenital hypomyelinating neuropathy with survival beyond infancy

Author

Low, K. J., Stals, K., Caswell, R., Wakeling, M., Clayton-Smith, J., Donaldson, A., Foulds, N., Norman, A., Splitt, M., Urankar, K., Vijayakumar, K., Majumdar, A., Study, DDD, Ellard, S., and Smithson, S. F.

Abstract

CHN is genetically heterogeneous and its genetic basis is difficult to determine on features alone. CNTNAP1 encodes CASPR, integral in the paranodal junction high molecular mass complex. Nineteen individuals with biallelic variants have been described in association with severe congenital hypomyelinating neuropathy, respiratory compromise, profound intellectual disability and death within the first year. We report 7 additional patients ascertained through exome sequencing. We identified 9 novel CNTNAP1 variants in 6 families: three missense variants, four nonsense variants, one frameshift variant and one splice site variant. Significant polyhydramnios occurred in 6/7 pregnancies. Severe respiratory compromise was seen in 6/7 (tracheostomy in 5). A complex neurological phenotype was seen in all patients who had marked brain hypomyelination/demyelination and profound developmental delay. Additional neurological findings included cranial nerve compromise: orobulbar dysfunction in 5/7, facial nerve weakness in 4/7 and vocal cord paresis in 5/7. Dystonia occurred in 2/7 patients and limb contractures in 5/7. All had severe gastroesophageal reflux, and a gastrostomy was required in 5/7. In contrast to most previous reports, only one patient died in the first year of life. Protein modelling was performed for all detected CNTNAP1 variants. We propose a genotype–phenotype correlation, whereby hypomorphic missense variants partially ameliorate the phenotype, prolonging survival. This study suggests that biallelic variants in CNTNAP1 cause a distinct recognisable syndrome, which is not caused by other genes associated with CHN. Neonates presenting with this phenotype will benefit from early genetic definition to inform clinical management and enable essential genetic counselling for their families.

Published
2018

38. A Design Framework for Invertible Logic

Author

Onizawa, N., primary, Nishino, K., additional, Smithson, S., additional, Meyer, B., additional, Gross, W., additional, Yamagata, H., additional, Fujita, H., additional, and Hanyu, T., additional

Published
2019
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39. Finding Diagnostically Useful Patterns in Quantitative Phenotypic Data

Author

Aitken, Stuart, primary, Firth, Helen V., additional, McRae, Jeremy, additional, Halachev, Mihail, additional, Kini, Usha, additional, Parker, Michael J., additional, Lees, Melissa M., additional, Lachlan, Katherine, additional, Sarkar, Ajoy, additional, Joss, Shelagh, additional, Splitt, Miranda, additional, McKee, Shane, additional, Németh, Andrea H., additional, Scott, Richard H., additional, Wright, Caroline F., additional, Marsh, Joseph A., additional, Hurles, Matthew E., additional, FitzPatrick, David R., additional, Fitzgerald, T.W., additional, Gerety, S.S., additional, Jones, W.D., additional, van Kogelenberg, M., additional, King, D.A., additional, McRae, J., additional, Morley, K.I., additional, Parthiban, V., additional, Al-Turki, S., additional, Ambridge, K., additional, Barrett, D.M., additional, Bayzetinova, T., additional, Clayton, S., additional, Coomber, E.L., additional, Gribble, S., additional, Jones, P., additional, Krishnappa, N., additional, Mason, L.E., additional, Middleton, A., additional, Miller, R., additional, Prigmore, E., additional, Rajan, D., additional, Sifrim, A., additional, Tivey, A.R., additional, Ahmed, M., additional, Akawi, N., additional, Andrews, R., additional, Anjum, U., additional, Archer, H., additional, Armstrong, R., additional, Balasubramanian, M., additional, Banerjee, R., additional, Barelle, D., additional, Batstone, P., additional, Baty, D., additional, Bennett, C., additional, Berg, J., additional, Bernhard, B., additional, Bevan, A.P., additional, Blair, E., additional, Blyth, M., additional, Bohanna, D., additional, Bourdon, L., additional, Bourn, D., additional, Brady, A., additional, Bragin, E., additional, Brewer, C., additional, Brueton, L., additional, Brunstrom, K., additional, Bumpstead, S.J., additional, Bunyan, D.J., additional, Burn, J., additional, Burton, J., additional, Canham, N., additional, Castle, B., additional, Chandler, K., additional, Clasper, S., additional, Clayton-Smith, J., additional, Cole, T., additional, Collins, A., additional, Collinson, M.N., additional, Connell, F., additional, Cooper, N., additional, Cox, H., additional, Cresswell, L., additional, Cross, G., additional, Crow, Y., additional, D’Alessandro, P.M., additional, Dabir, T., additional, Davidson, R., additional, Davies, S., additional, Dean, J., additional, Deshpande, C., additional, Devlin, G., additional, Dixit, A., additional, Dominiczak, A., additional, Donnelly, C., additional, Donnelly, D., additional, Douglas, A., additional, Duncan, A., additional, Eason, J., additional, Edkins, S., additional, Ellard, S., additional, Ellis, P., additional, Elmslie, F., additional, Evans, K., additional, Everest, S., additional, Fendick, T., additional, Fisher, R., additional, Flinter, F., additional, Foulds, N., additional, Fryer, A., additional, Fu, B., additional, Gardiner, C., additional, Gaunt, L., additional, Ghali, N., additional, Gibbons, R., additional, Pereira, S.L. Gomes, additional, Goodship, J., additional, Goudie, D., additional, Gray, E., additional, Greene, P., additional, Greenhalgh, L., additional, Harrison, L., additional, Hawkins, R., additional, Hellens, S., additional, Henderson, A., additional, Hobson, E., additional, Holden, S., additional, Holder, S., additional, Hollingsworth, G., additional, Homfray, T., additional, Humphreys, M., additional, Hurst, J., additional, Ingram, S., additional, Irving, M., additional, Jarvis, J., additional, Jenkins, L., additional, Johnson, D., additional, Jones, D., additional, Jones, E., additional, Josifova, D., additional, Joss, S., additional, Kaemba, B., additional, Kazembe, S., additional, Kerr, B., additional, Kini, U., additional, Kinning, E., additional, Kirby, G., additional, Kirk, C., additional, Kivuva, E., additional, Kraus, A., additional, Kumar, D., additional, Lachlan, K., additional, Lam, W., additional, Lampe, A., additional, Langman, C., additional, Lees, M., additional, Lim, D., additional, Lowther, G., additional, Lynch, S.A., additional, Magee, A., additional, Maher, E., additional, Mansour, S., additional, Marks, K., additional, Martin, K., additional, Maye, U., additional, McCann, E., additional, McConnell, V., additional, McEntagart, M., additional, McGowan, R., additional, McKay, K., additional, McKee, S., additional, McMullan, D.J., additional, McNerlan, S., additional, Mehta, S., additional, Metcalfe, K., additional, Miles, E., additional, Mohammed, S., additional, Montgomery, T., additional, Moore, D., additional, Morgan, S., additional, Morris, A., additional, Morton, J., additional, Mugalaasi, H., additional, Murday, V., additional, Nevitt, L., additional, Newbury-Ecob, R., additional, Norman, A., additional, O’Shea, R., additional, Ogilvie, C., additional, Park, S., additional, Parker, M.J., additional, Patel, C., additional, Paterson, J., additional, Payne, S., additional, Phipps, J., additional, Pilz, D.T., additional, Porteous, D., additional, Pratt, N., additional, Prescott, K., additional, Price, S., additional, Pridham, A., additional, Proctor, A., additional, Purnell, H., additional, Ragge, N., additional, Rankin, J., additional, Raymond, L., additional, Rice, D., additional, Robert, L., additional, Roberts, E., additional, Roberts, G., additional, Roberts, J., additional, Roberts, P., additional, Ross, A., additional, Rosser, E., additional, Saggar, A., additional, Samant, S., additional, Sandford, R., additional, Sarkar, A., additional, Schweiger, S., additional, Scott, C., additional, Scott, R., additional, Selby, A., additional, Seller, A., additional, Sequeira, C., additional, Shannon, N., additional, Sharif, S., additional, Shaw-Smith, C., additional, Shearing, E., additional, Shears, D., additional, Simonic, I., additional, Simpkin, D., additional, Singzon, R., additional, Skitt, Z., additional, Smith, A., additional, Smith, B., additional, Smith, K., additional, Smithson, S., additional, Sneddon, L., additional, Splitt, M., additional, Squires, M., additional, Stewart, F., additional, Stewart, H., additional, Suri, M., additional, Sutton, V., additional, Swaminathan, G.J., additional, Sweeney, E., additional, Tatton-Brown, K., additional, Taylor, C., additional, Taylor, R., additional, Tein, M., additional, Temple, I.K., additional, Thomson, J., additional, Tolmie, J., additional, Torokwa, A., additional, Treacy, B., additional, Turner, C., additional, Turnpenny, P., additional, Tysoe, C., additional, Vandersteen, A., additional, Vasudevan, P., additional, Vogt, J., additional, Wakeling, E., additional, Walker, D., additional, Waters, J., additional, Weber, A., additional, Wellesley, D., additional, Whiteford, M., additional, Widaa, S., additional, Wilcox, S., additional, Williams, D., additional, Williams, N., additional, Woods, G., additional, Wragg, C., additional, Wright, M., additional, Yang, F., additional, Yau, M., additional, Carter, N.P., additional, Parker, M., additional, Firth, H.V., additional, FitzPatrick, D.R., additional, Wright, C.F., additional, Barrett, J.C., additional, and Hurles, M.E., additional

Published
2019
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41. Diagnosis of lethal or prenatal-onset autosomal recessive disorders by parental exome sequencing.

Author

Stals, KL, Wakeling, M, Baptista, J, Caswell, R, Parrish, A, Rankin, J, Tysoe, C, Jones, G, Gunning, AC, Lango Allen, H, Bradley, L, Brady, AF, Carley, H, Carmichael, J, Castle, B, Cilliers, D, Cox, H, Deshpande, C, Dixit, A, Eason, J, Elmslie, F, Fry, AE, Fryer, A, Holder, M, Homfray, T, Kivuva, E, McKay, V, Newbury-Ecob, R, Parker, M, Savarirayan, R, Searle, C, Shannon, N, Shears, D, Smithson, S, Thomas, E, Turnpenny, PD, Varghese, V, Vasudevan, P, Wakeling, E, Baple, EL, Ellard, S, Stals, KL, Wakeling, M, Baptista, J, Caswell, R, Parrish, A, Rankin, J, Tysoe, C, Jones, G, Gunning, AC, Lango Allen, H, Bradley, L, Brady, AF, Carley, H, Carmichael, J, Castle, B, Cilliers, D, Cox, H, Deshpande, C, Dixit, A, Eason, J, Elmslie, F, Fry, AE, Fryer, A, Holder, M, Homfray, T, Kivuva, E, McKay, V, Newbury-Ecob, R, Parker, M, Savarirayan, R, Searle, C, Shannon, N, Shears, D, Smithson, S, Thomas, E, Turnpenny, PD, Varghese, V, Vasudevan, P, Wakeling, E, Baple, EL, and Ellard, S

Published
2018

44. Prevalence and architecture of de novo mutations in developmental disorders

Author

McRae, JF, Clayton, S, Fitzgerald, TW, Kaplanis, J, Prigmore, E, Rajan, D, Sifrim, A, Aitken, S, Akawi, N, Alvi, M, Ambridge, K, Barrett, DM, Bayzetinova, T, Jones, P, Jones, WD, King, D, Krishnappa, N, Mason, LE, Singh, T, Tivey, AR, Ahmed, M, Anjum, U, Archer, H, Armstrong, R, Awada, J, Balasubramanian, M, Banka, S, Baralle, D, Barnicoat, A, Batstone, P, Baty, D, Bennett, C, Berg, J, Bernhard, B, Bevan, AP, Bitner-Glindzicz, M, Blair, E, Blyth, M, Bohanna, D, Bourdon, L, Bourn, D, Bradley, L, Brady, A, Brent, S, Brewer, C, Brunstrom, K, Bunyan, DJ, Burn, J, Canham, N, Castle, B, Chandler, K, Chatzimichali, E, Cilliers, D, Clarke, A, Clasper, S, Clayton-Smith, J, Clowes, V, Coates, A, Cole, T, Colgiu, I, Collins, A, Collinson, MN, Connell, F, Cooper, N, Cox, H, Cresswell, L, Cross, G, Crow, Y, D’Alessandro, M, Dabir, T, Davidson, R, Davies, S, de Vries, D, Dean, J, Deshpande, C, Devlin, G, Dixit, A, Dobbie, A, Donaldson, A, Donnai, D, Donnelly, D, Donnelly, C, Douglas, A, Douzgou, S, Duncan, A, Eason, J, Ellard, S, Ellis, I, Elmslie, F, Evans, K, Everest, S, Fendick, T, Fisher, R, Flinter, F, Foulds, N, Fry, A, Fryer, A, Gardiner, C, Gaunt, L, Ghali, N, Gibbons, R, Gill, H, Goodship, J, Goudie, D, Gray, E, Green, A, Greene, P, Greenhalgh, L, Gribble, S, Harrison, R, Harrison, L, Harrison, V, Hawkins, R, He, L, Hellens, S, Henderson, A, Hewitt, S, Hildyard, L, Hobson, E, Holden, S, Holder, M, Holder, S, Hollingsworth, G, Homfray, T, Humphreys, M, Hurst, J, Hutton, B, Ingram, S, Irving, M, Islam, L, Jackson, A, Jarvis, J, Jenkins, L, Johnson, D, Jones, E, Josifova, D, Joss, S, Kaemba, B, Kazembe, S, Kelsell, R, Kerr, B, Kingston, H, Kini, U, Kinning, E, Kirby, G, Kirk, C, Kivuva, E, Kraus, A, Kumar, D, Kumar, VKA, Lachlan, K, Lam, W, Lampe, A, Langman, C, Lees, M, Lim, D, Longman, C, Lowther, G, Lynch, SA, Magee, A, Maher, E, Male, A, Mansour, S, Marks, K, Martin, K, Maye, U, McCann, E, McConnell, V, McEntagart, M, McGowan, R, McKay, K, McKee, S, McMullan, DJ, McNerlan, S, McWilliam, C, Mehta, S, Metcalfe, K, Middleton, A, Miedzybrodzka, Z, Miles, E, Mohammed, S, Montgomery, T, Moore, D, Morgan, S, Morton, J, Mugalaasi, H, Murday, V, Murphy, H, Naik, S, Nemeth, A, Nevitt, L, Newbury-Ecob, R, Norman, A, O’Shea, R, Ogilvie, C, Ong, K-R, Park, S-M, Parker, MJ, Patel, C, Paterson, J, Payne, S, Perrett, D, Phipps, J, Pilz, DT, Pollard, M, Pottinger, C, Poulton, J, Pratt, N, Prescott, K, Price, S, Pridham, A, Procter, A, Purnell, H, Quarrell, O, Ragge, N, Rahbari, R, Randall, J, Rankin, J, Raymond, L, Rice, D, Robert, L, Roberts, E, Roberts, J, Roberts, P, Roberts, G, Ross, A, Rosser, E, Saggar, A, Samant, S, Sampson, J, Sandford, R, Sarkar, A, Schweiger, S, Scott, R, Scurr, I, Selby, A, Seller, A, Sequeira, C, Shannon, N, Sharif, S, Shaw-Smith, C, Shearing, E, Shears, D, Sheridan, E, Simonic, I, Singzon, R, Skitt, Z, Smith, A, Smith, K, Smithson, S, Sneddon, L, Splitt, M, Squires, M, Stewart, F, Stewart, H, Straub, V, Suri, M, Sutton, V, Swaminathan, GJ, Sweeney, E, Tatton-Brown, K, Taylor, C, Taylor, R, Tein, M, Temple, IK, Thomson, J, Tischkowitz, M, Tomkins, S, Torokwa, A, Treacy, B, Turner, C, Turnpenny, P, Tysoe, C, Vandersteen, A, Varghese, V, Vasudevan, P, Vijayarangakannan, P, Vogt, J, Wakeling, E, Wallwark, S, Waters, J, Weber, A, Wellesley, D, Whiteford, M, Widaa, S, Wilcox, S, Wilkinson, E, Williams, D, Williams, N, Wilson, L, Woods, G, Wragg, C, Wright, M, Yates, L, Yau, M, Nellåker, C, Parker, M, Firth, HV, Wright, CF, FitzPatrick, DR, Barrett, JC, and Hurles, ME

Subjects
Male, Parents, Heredity, Developmental Disabilities, GRIN2B, POGZ, Autoantigens, SMAD4, CASK, GATAD2B, 0302 clinical medicine, TRIO, SMARCA2, KCNH1, Average Faces, CTNNB1, SCN1A, Young adult, Casein Kinase II, Child, AUTS2, MEF2C, Exome, ADNP, Exome sequencing, EP300, KCNQ2, KCNQ3, EHMT1, CNKSR2, CREBBP, MYT1L, MED13L, CSNK2A1, Protein Phosphatase 2C, PPP2R1A, ZBTB18, CDKL5, WAC, HNRNPU, Cohort, STXBP1, Medical genetics, SYNGAP1, Mi-2 Nucleosome Remodeling and Deacetylase Complex, Sex characteristics, AHDC1, SCN8A, medicine.medical_specialty, SLC6A1, FOXP1, USP9X, Article, ANKRD11, PUF60, BRAF, 03 medical and health sciences, SATB2, SMC1A, Intellectual Disability, BCL11A, GABRB3, IQSEC2, Humans, TBL1XR1, TCF4, MSL3, TCF20, DNM1, EEF1A2, SUV420H1, DYRK1A, SETD5, COL4A3BP, CTCF, CHD2, R1, CHD4, 030104 developmental biology, NAA10, HDAC8, Mutation, KDM5B, CHAMP1, PhenIcons, 030217 neurology & neurosurgery, Transcription Factors, 0301 basic medicine, ZMYND11, PTEN, De novo mutation, Chromosomal Proteins, Non-Histone, PTPN11, ASXL1, Bioinformatics, medicine.disease_cause, ASXL3, Cohort Studies, DEAD-box RNA Helicases, CHD8, Prevalence, QRICH1, KIF1A, Genetics, Sex Characteristics, GNAI1, Multidisciplinary, WDR45, Middle Aged, KMT2A, PPM1D, MECP2, DNA-Binding Proteins, PPP2R5D, Phenotype, PACS1, ras GTPase-Activating Proteins, DDX3X, Female, FOXG1, SET, Myeloid-Lymphoid Leukemia Protein, Developmental Disease, Adult, KANSL1, Adolescent, NFIX, Nerve Tissue Proteins, PURA, Biology, KAT6B, KAT6A, NSD1, PDHA1, ALG13, Young Adult, Seizures, CDC2 Protein Kinase, medicine, Journal Article, QH426, Homeodomain Proteins, ITPR1, DYNC1H1, GNAO1, Histone-Lysine N-Methyltransferase, Sequence Analysis, DNA, ZC4H2, ARID1B, Repressor Proteins, CNOT3, SCN2A, SLC35A2, CDK13
Abstract

Children with severe, undiagnosed developmental disorders (DDs) are enriched for damaging de novo mutations (DNMs) in developmentally important genes. We exome sequenced 4,294 families with children with DDs, and meta-analysed these data with published data on 3,287 children with similar disorders. We show that the most significant factors influencing the diagnostic yield of de novo mutations are the sex of the child, the relatedness of their parents and the age of both father and mother. We identified 95 genes enriched for damaging de novo mutation at genome-wide significance (P < 5 x 10-7), including fourteen genes for which compelling data for causation was previously lacking. The large number of genome-wide significant findings allow us to demonstrate that, at current cost differentials, exome sequencing has much greater power than genome sequencing for novel gene discovery in genetically heterogeneous disorders. We estimate that 42.5% of our cohort likely carry pathogenic de novo single nucleotide variants (SNVs) and indels in coding sequences, with approximately half operating by a loss-of-function mechanism, and the remainder being gain-of-function. We established that most haploinsufficient developmental disorders have already been identified, but that many gain-of-function disorders remain to be discovered. Extrapolating from the DDD cohort to the general population, we estimate that de novo dominant developmental disorders have an average birth prevalence of 1 in 168 to 1 in 377, depending on parental age.

Published
2017

46. Biallelic TRIP13 mutations predispose to Wilms tumor and chromosome missegregation.

Author

Yost, S., Wolf, B., Hanks, S., Zachariou, A., Marcozzi, C., Clarke, M., Voer, R.M. de, Etemad, B., Uijttewaal, E., Ramsay, E., Wylie, H., Elliott, A., Picton, S., Smith, A., Smithson, S., Seal, S., Ruark, E., Houge, G., Pines, J., Kops, G.J., Rahman, N., Yost, S., Wolf, B., Hanks, S., Zachariou, A., Marcozzi, C., Clarke, M., Voer, R.M. de, Etemad, B., Uijttewaal, E., Ramsay, E., Wylie, H., Elliott, A., Picton, S., Smith, A., Smithson, S., Seal, S., Ruark, E., Houge, G., Pines, J., Kops, G.J., and Rahman, N.

Abstract

Item does not contain fulltext

Published
2017

47. Daycase cataract surgery

Author

Strong, N.P., Wigmore, W., Smithson, S., Rhodes, S., Woodruff, G., and Rosenthal, A.R.

Subjects
Cataract, Surgery, Outpatient -- Evaluation, Surgery, Outpatient -- United Kingdom, Health
Abstract

Whereas 20 years ago a patient undergoing cataract surgery might have spent two weeks in the hospital, today in Britain a patient usually stays in the hospital only a few days. In the United States, 80 percent of patients having cataract surgery do not stay overnight. Several factors have contributed to these changes: increasing demand for cataract surgery, increased costs of hospitalization, and a reduction in the number of National Health Service beds available for elective surgery in Britain. A report is presented of six months' experience with day-stay (outpatient) cataract surgery at a large eye clinic in Britain. Day-stay patients were compared with patients admitted to the hospital for cataract surgery during the same period. The day-stay patients accounted for 34 percent of all cataract surgery patients. Ninety percent of the day-stay operations were performed under local anesthesia, compared with 56 percent of the inpatient operations. The rate of complication was not affected by day-stay operation or type of anesthesia used. The percent of outpatient operations performed by the different consultant groups varied greatly (from 14 percent to 74 percent). Comparison of the consultant groups showed a strong correlation between the group's utilization of local anesthesia and day-stay surgery. Only 2.1 percent of day-stay patients required subsequent hospital admission. These results indicate that day-stay cataract surgery does not increase the risk of complications, and can safely be performed under either local or general anesthesia. (Consumer Summary produced by Reliance Medical Information, Inc.)

Published
1991

48. CNTNAP1: Extending the phenotype of congenital hypomyelinating neuropathy in 6 further patients

Author

Low, K., primary, Stals, K., additional, Caswell, R., additional, Clayton-Smith, J., additional, Donaldson, A., additional, Foulds, N., additional, Splitt, M., additional, Norman, A., additional, Urankar, K., additional, Vijayakumar, K., additional, Study, D., additional, Ellard, S., additional, Majumdar, A., additional, and Smithson, S., additional

Published
2017
Full Text
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50. Large-scale discovery of novel genetic causes of developmental disorders

Author

Fitzgerald, TW, Gerety, SS, Jones, WD, van Kogelenberg, M, King, DA, McRae, J, Morley, KI, Parthiban, V, Al-Turki, S, Ambridge, K, Barrett, DM, Bayzetinova, T, Clayton, S, Coomber, EL, Gribble, S, Jones, P, Krishnappa, N, Mason, LE, Middleton, A, Miller, R, Prigmore, E, Rajan, D, Sifrim, A, Tivey, AR, Ahmed, M, Akawi, N, Andrews, R, Anjum, U, Archer, H, Armstrong, R, Balasubramanian, M, Banerjee, R, Baralle, D, Batstone, P, Baty, D, Bennett, C, Berg, J, Bernhard, B, Bevan, AP, Blair, E, Blyth, M, Bohanna, D, Bourdon, L, Bourn, D, Brady, A, Bragin, E, Brewer, C, Brueton, L, Brunstrom, K, Bumpstead, SJ, Bunyan, DJ, Burn, J, Burton, J, Canham, N, Castle, B, Chandler, K, Clasper, S, Clayton-Smith, J, Cole, T, Collins, A, Collinson, MN, Connell, F, Cooper, N, Cox, H, Cresswell, L, Cross, G, Crow, Y, D'Alessandro, M, Dabir, T, Davidson, R, Davies, S, Dean, J, Deshpande, C, Devlin, G, Dixit, A, Dominiczak, A, Donnelly, C, Donnelly, D, Douglas, A, Duncan, A, Eason, J, Edkins, S, Ellard, S, Ellis, P, Elmslie, F, Evans, K, Everest, S, Fendick, T, Fisher, R, Flinter, F, Foulds, N, Fryer, A, Fu, B, Gardiner, C, Gaunt, L, Ghali, N, Gibbons, R, Pereira, SLG, Goodship, J, Goudie, D, Gray, E, Greene, P, Greenhalgh, L, Harrison, L, Hawkins, R, Hellens, S, Henderson, A, Hobson, E, Holden, S, Holder, S, Hollingsworth, G, Homfray, T, Humphreys, M, Hurst, J, Ingram, S, Irving, M, Jarvis, J, Jenkins, L, Johnson, D, Jones, D, Jones, E, Josifova, D, Joss, S, Kaemba, B, Kazembe, S, Kerr, B, Kini, U, Kinning, E, Kirby, G, Kirk, C, Kivuva, E, Kraus, A, Kumar, D, Lachlan, K, Lam, W, Lampe, A, Langman, C, Lees, M, Lim, D, Lowther, G, Lynch, SA, Magee, A, Maher, E, Mansour, S, Marks, K, Martin, K, Maye, U, McCann, E, McConnell, V, McEntagart, M, McGowan, R, McKay, K, McKee, S, McMullan, DJ, McNerlan, S, Mehta, S, Metcalfe, K, Miles, E, Mohammed, S, Montgomery, T, Moore, D, Morgan, S, Morris, A, Morton, J, Mugalaasi, H, Murday, V, Nevitt, L, Newbury-Ecob, R, Norman, A, O'Shea, R, Ogilvie, C, Park, S, Parker, MJ, Patel, C, Paterson, J, Payne, S, Phipps, J, Pilz, DT, Porteous, D, Pratt, N, Prescott, K, Price, S, Pridham, A, Procter, A, Purnell, H, Ragge, N, Rankin, J, Raymond, L, Rice, D, Robert, L, Roberts, E, Roberts, G, Roberts, J, Roberts, P, Ross, A, Rosser, E, Saggar, A, Samant, S, Sandford, R, Sarkar, A, Schweier, S, Scott, C, Scott, R, Selby, A, Seller, A, Sequeira, C, Shannon, N, Shanrif, S, Shaw-Smith, C, Shearing, E, Shears, D, Simonic, I, Simpkin, D, Singzon, R, Skitt, Z, Smith, A, Smith, B, Smith, K, Smithson, S, Sneddon, L, Splitt, M, Squires, M, Stewart, F, Stewart, H, Suri, M, Sutton, V, Swaminathan, GJ, Sweeney, E, Tatton-Brown, K, Taylor, C, Taylor, R, Tein, M, Temple, IK, Thomson, J, Tolmie, J, Torokwa, A, Treacy, B, Turner, C, Turnpenny, P, Tysoe, C, Vandersteen, A, Vasudevan, P, Vogt, J, Wakeling, E, Walker, D, Waters, J, Weber, A, Wellesley, D, Whiteford, M, Widaa, S, Wilcox, S, Williams, D, Williams, N, Woods, G, Wragg, C, Wright, M, Yang, F, Yau, M, Carter, NP, Parker, M, Firth, HV, FitzPatrick, DR, Wright, CF, Barrett, JC, Hurles, ME, Fitzgerald, TW, Gerety, SS, Jones, WD, van Kogelenberg, M, King, DA, McRae, J, Morley, KI, Parthiban, V, Al-Turki, S, Ambridge, K, Barrett, DM, Bayzetinova, T, Clayton, S, Coomber, EL, Gribble, S, Jones, P, Krishnappa, N, Mason, LE, Middleton, A, Miller, R, Prigmore, E, Rajan, D, Sifrim, A, Tivey, AR, Ahmed, M, Akawi, N, Andrews, R, Anjum, U, Archer, H, Armstrong, R, Balasubramanian, M, Banerjee, R, Baralle, D, Batstone, P, Baty, D, Bennett, C, Berg, J, Bernhard, B, Bevan, AP, Blair, E, Blyth, M, Bohanna, D, Bourdon, L, Bourn, D, Brady, A, Bragin, E, Brewer, C, Brueton, L, Brunstrom, K, Bumpstead, SJ, Bunyan, DJ, Burn, J, Burton, J, Canham, N, Castle, B, Chandler, K, Clasper, S, Clayton-Smith, J, Cole, T, Collins, A, Collinson, MN, Connell, F, Cooper, N, Cox, H, Cresswell, L, Cross, G, Crow, Y, D'Alessandro, M, Dabir, T, Davidson, R, Davies, S, Dean, J, Deshpande, C, Devlin, G, Dixit, A, Dominiczak, A, Donnelly, C, Donnelly, D, Douglas, A, Duncan, A, Eason, J, Edkins, S, Ellard, S, Ellis, P, Elmslie, F, Evans, K, Everest, S, Fendick, T, Fisher, R, Flinter, F, Foulds, N, Fryer, A, Fu, B, Gardiner, C, Gaunt, L, Ghali, N, Gibbons, R, Pereira, SLG, Goodship, J, Goudie, D, Gray, E, Greene, P, Greenhalgh, L, Harrison, L, Hawkins, R, Hellens, S, Henderson, A, Hobson, E, Holden, S, Holder, S, Hollingsworth, G, Homfray, T, Humphreys, M, Hurst, J, Ingram, S, Irving, M, Jarvis, J, Jenkins, L, Johnson, D, Jones, D, Jones, E, Josifova, D, Joss, S, Kaemba, B, Kazembe, S, Kerr, B, Kini, U, Kinning, E, Kirby, G, Kirk, C, Kivuva, E, Kraus, A, Kumar, D, Lachlan, K, Lam, W, Lampe, A, Langman, C, Lees, M, Lim, D, Lowther, G, Lynch, SA, Magee, A, Maher, E, Mansour, S, Marks, K, Martin, K, Maye, U, McCann, E, McConnell, V, McEntagart, M, McGowan, R, McKay, K, McKee, S, McMullan, DJ, McNerlan, S, Mehta, S, Metcalfe, K, Miles, E, Mohammed, S, Montgomery, T, Moore, D, Morgan, S, Morris, A, Morton, J, Mugalaasi, H, Murday, V, Nevitt, L, Newbury-Ecob, R, Norman, A, O'Shea, R, Ogilvie, C, Park, S, Parker, MJ, Patel, C, Paterson, J, Payne, S, Phipps, J, Pilz, DT, Porteous, D, Pratt, N, Prescott, K, Price, S, Pridham, A, Procter, A, Purnell, H, Ragge, N, Rankin, J, Raymond, L, Rice, D, Robert, L, Roberts, E, Roberts, G, Roberts, J, Roberts, P, Ross, A, Rosser, E, Saggar, A, Samant, S, Sandford, R, Sarkar, A, Schweier, S, Scott, C, Scott, R, Selby, A, Seller, A, Sequeira, C, Shannon, N, Shanrif, S, Shaw-Smith, C, Shearing, E, Shears, D, Simonic, I, Simpkin, D, Singzon, R, Skitt, Z, Smith, A, Smith, B, Smith, K, Smithson, S, Sneddon, L, Splitt, M, Squires, M, Stewart, F, Stewart, H, Suri, M, Sutton, V, Swaminathan, GJ, Sweeney, E, Tatton-Brown, K, Taylor, C, Taylor, R, Tein, M, Temple, IK, Thomson, J, Tolmie, J, Torokwa, A, Treacy, B, Turner, C, Turnpenny, P, Tysoe, C, Vandersteen, A, Vasudevan, P, Vogt, J, Wakeling, E, Walker, D, Waters, J, Weber, A, Wellesley, D, Whiteford, M, Widaa, S, Wilcox, S, Williams, D, Williams, N, Woods, G, Wragg, C, Wright, M, Yang, F, Yau, M, Carter, NP, Parker, M, Firth, HV, FitzPatrick, DR, Wright, CF, Barrett, JC, and Hurles, ME

Abstract

Despite three decades of successful, predominantly phenotype-driven discovery of the genetic causes of monogenic disorders, up to half of children with severe developmental disorders of probable genetic origin remain without a genetic diagnosis. Particularly challenging are those disorders rare enough to have eluded recognition as a discrete clinical entity, those with highly variable clinical manifestations, and those that are difficult to distinguish from other, very similar, disorders. Here we demonstrate the power of using an unbiased genotype-driven approach to identify subsets of patients with similar disorders. By studying 1,133 children with severe, undiagnosed developmental disorders, and their parents, using a combination of exome sequencing and array-based detection of chromosomal rearrangements, we discovered 12 novel genes associated with developmental disorders. These newly implicated genes increase by 10% (from 28% to 31%) the proportion of children that could be diagnosed. Clustering of missense mutations in six of these newly implicated genes suggests that normal development is being perturbed by an activating or dominant-negative mechanism. Our findings demonstrate the value of adopting a comprehensive strategy, both genome-wide and nationwide, to elucidate the underlying causes of rare genetic disorders.

Published
2015

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