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1. Hypothesis-driven genome-wide association studies provide novel insights into genetics of reading disabilities

Author

Price, K.M., Wigg, K.G., Eising, E., Feng, Y, Blokland, K., Wilkinson, M., Kerr, E.N., Guger, S.L., Abbondanza, F., Allegrini, A.G., Andlauer, T.F.M., Bates, T.C., Bernard, M., Bonte, M., Boomsma, D.I., Bourgeron, T., Brandeis, D., Carreiras, M., Ceroni, F., Csépe, V., Dale, P.S., DeFries, J.C., Jong, P.F. de, Démonet, J.F., Zeeuw, E.L. de, Franken, M.-C.J., Francks, C., Gerritse, M.L., Gialluisi, A., Gordon, S.D., Gruen, J.R., Hayiou-Thomas, M.E., Hernández-Cabrera, J., Hottenga, J.-J., Hulme, C., Jansen, P.R., Kere, J., Koomar, T., Landerl, K., Leonard, G.T., Liao, Z., Luciano, M., Lyytinen, H., Martin, N.G., Martinelli, A., Maurer, U., Michaelson, J.J., Mirza-Schreiber, N., Moll, K., Monaco, A.P., Morgan, A.T., Müller-Myhsok, B., Newbury, D.F., Nöthen, M.M., Olson, R.K., Paracchini, S., Paus, T., Pausova, Z., Pennell, C.E., Pennington, B.F., Plomin, R.J., Ramus, F., Reilly, S., Richer, L., Rimfeld, K., Schulte-Körne, G., Shapland, C.Y., Simpson, N.H., Smith, S.D., Snowling, M.J., St Pourcain, B., Stein, J.F., Talcott, J.B., Tiemeier, H., Tomblin, J.B., Truong, D.T., Bergen, E. van, Schroeff, M.P. van der, Donkelaar, M.M.J. van, Verhoef, E., Wang, C.A., Watkins, K.E., Whitehouse, A.J.O., Willcutt, E.G., Wright, M.J., Zhu, G., Fisher, S.E., Lovett, M.W., Strug, L.J., Barr, C.L., University of St Andrews. School of Medicine, University of St Andrews. Centre for Biophotonics, University of St Andrews. Biomedical Sciences Research Complex, University of St Andrews. Institute of Behavioural and Neural Sciences, University of St Andrews. St Andrews Bioinformatics Unit, University of St Andrews. Cellular Medicine Division, STEMM - Stem Cells and Metabolism Research Program, Juha Kere / Principal Investigator, Research Programs Unit, University of Helsinki, Consortium, Quantitative Trait Working Group of the GenLang, European Commission, Otorhinolaryngology and Head and Neck Surgery, Child and Adolescent Psychiatry / Psychology, RS: FPN CN 7, Language, Biological Psychology, Amsterdam Reproduction & Development, APH - Mental Health, APH - Methodology, APH - Health Behaviors & Chronic Diseases, APH - Personalized Medicine, Complex Trait Genetics, Amsterdam Neuroscience - Complex Trait Genetics, LEARN! - Educational neuroscience, learning and development, and Human genetics

Subjects
Neuroinformatics, single nucleotide, Candidate gene, Autism Spectrum Disorder, Developmental dyslexia, autism spectrum disorder, QH426 Genetics, Polymorphism, Single Nucleotide, Neuronal migration, 3124 Neurology and psychiatry, polymorphism, Dyslexia, Cellular and Molecular Neuroscience, All institutes and research themes of the Radboud University Medical Center, problem solving, SDG 3 - Good Health and Well-being, dyslexia, Humans, Kiaa0319, Family, humans, Children, QH426, Problem Solving, Biological Psychiatry, MCC, Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7], genome-wide association study, Dyx1c1, Plasma-membrane, 3rd-DAS, Psychiatry and Mental health, Susceptibility, RC0321, SDG 4 - Quality Education, RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry, Genome-Wide Association Study, Knockout mice
Abstract

Reading Disability (RD) is often characterized by difficulties in the phonology of the language. While the molecular mechanisms underlying it are largely undetermined, loci are being revealed by genome-wide association studies (GWAS). In a previous GWAS for word reading (Price, 2020), we observed that top single-nucleotide polymorphisms (SNPs) were located near to or in genes involved in neuronal migration/axon guidance (NM/AG) or loci implicated in autism spectrum disorder (ASD). A prominent theory of RD etiology posits that it involves disturbed neuronal migration, while potential links between RD-ASD have not been extensively investigated. To improve power to identify associated loci, we up-weighted variants involved in NM/AG or ASD, separately, and performed a new Hypothesis-Driven (HD)–GWAS. The approach was applied to a Toronto RD sample and a meta-analysis of the GenLang Consortium. For the Toronto sample (n = 624), no SNPs reached significance; however, by gene-set analysis, the joint contribution of ASD-related genes passed the threshold (p~1.45 × 10–2, threshold = 2.5 × 10–2). For the GenLang Cohort (n = 26,558), SNPs in DOCK7 and CDH4 showed significant association for the NM/AG hypothesis (sFDR q = 1.02 × 10–2). To make the GenLang dataset more similar to Toronto, we repeated the analysis restricting to samples selected for reading/language deficits (n = 4152). In this GenLang selected subset, we found significant association for a locus intergenic between BTG3-C21orf91 for both hypotheses (sFDR q < 9.00 × 10–4). This study contributes candidate loci to the genetics of word reading. Data also suggest that, although different variants may be involved, alleles implicated in ASD risk may be found in the same genes as those implicated in word reading. This finding is limited to the Toronto sample suggesting that ascertainment influences genetic associations., Translational Psychiatry, 12 (1), ISSN:2158-3188

Published
2022
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2. Genome-wide analyses of individual differences in quantitatively assessed reading- and language-related skills in up to 34,000 people

Author

Eising, E., Mirza-Schreiber, N., Zeeuw, E.L. de, Wang, C.A., Truong, D.T., Allegrini, A.G., Shapland, C.Y., Zhu, G., Wigg, K.G., Gerritse, M.L., Molz, B., Alagöz, G., Gialluisi, A., Abbondanza, F., Rimfeld, K., Donkelaar, M.M.J. van, Liao, Z., Jansen, P.R., Andlauer, T.F.M., Bates, T.C., Bernard, M., Blokland, K., Bonte, M., Børglum, A.D., Bourgeron, T., Brandeis, D., Ceroni, F., Csépe, V., Dale, P.S., Jong, P.F. de, DeFries, J.C., Démonet, J.F., Demontis, D., Feng, Yu, Gordon, S.D.S., Guger, S.L., Hayiou-Thomas, M.E., Hernández-Cabrera, J.A., Hottenga, J.J., Hulme, C., Kere, J., Kerr, E.N., Koomar, T., Landerl, K., Leonard, G.T., Lovett, M.W., Lyytinen, H., Martin, N.G., Martinelli, A., Maurer, U., Michaelson, J.J., Moll, K., Monaco, A.P., Morgan, A.T., Nöthen, M.M., Pausova, Z., Pennell, C.E., Pennington, B.F., Price, K.M., Rajagopal, V.M., Ramus, F., Richer, L., Simpson, N.H., Smith, S.D., Snowling, M.J., Stein, J., Strug, L.J., Talcott, J.B., Tiemeier, H., Schroeff, M.P. van der, Verhoef, E., Watkins, K.E., Wilkinson, M., Wright, M.J., Barr, C.L., Boomsma, D.I., Carreiras, M., Franken, M.J., Gruen, J.R., Luciano, M., Müller-Myhsok, B., Newbury, D.F., Olson, R.K., Paracchini, S., Paus, T., Plomin, R., Reilly, S., Schulte-Körne, G., Tomblin, J.B., Bergen, E. van, Whitehouse, A.J.O., Willcutt, E.G., Pourcain, B. St, Francks, C., Fisher, S.E., St Pourcain, B., Génétique humaine et fonctions cognitives - Human Genetics and Cognitive Functions (GHFC (UMR_3571 / U-Pasteur_1)), Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire de sciences cognitives et psycholinguistique (LSCP), Département d'Etudes Cognitives - ENS Paris (DEC), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École des hautes études en sciences sociales (EHESS)-Centre National de la Recherche Scientifique (CNRS), Human genetics, APH - Aging & Later Life, APH - Mental Health, Biological Psychology, Complex Trait Genetics, Amsterdam Neuroscience - Complex Trait Genetics, APH - Health Behaviors & Chronic Diseases, APH - Personalized Medicine, Amsterdam Reproduction & Development, APH - Methodology, LEARN! - Educational neuroscience, learning and development, Child and Adolescent Psychiatry / Psychology, Otorhinolaryngology and Head and Neck Surgery, STEMM - Stem Cells and Metabolism Research Program, Juha Kere / Principal Investigator, Research Programs Unit, University of Helsinki, Language, RS: FPN CN 7, The Royal Society, University of St Andrews. Cellular Medicine Division, University of St Andrews. School of Medicine, University of St Andrews. Centre for Biophotonics, University of St Andrews. Biomedical Sciences Research Complex, University of St Andrews. Institute of Behavioural and Neural Sciences, and University of St Andrews. St Andrews Bioinformatics Unit

Subjects
Neuroinformatics, Adult, kieli ja kielet, Adolescent, Individuality, QH426 Genetics, Polymorphism, Single Nucleotide, lukeminen, Language in Interaction, Young Adult, SDG 3 - Good Health and Well-being, RA0421, reading, RA0421 Public health. Hygiene. Preventive Medicine, Humans, Speech, study, Polymorphism, Reading j, Preschool, Child, QH426, perinnöllisyys, Genome-wide Association Study, Language, Meta-analysis, Reading, MCC, Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7], genome-wide association study, language, Multidisciplinary, meta-analyysi, 1184 Genetics, developmental biology, physiology, kielitaito, [SDV.NEU.SC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive Sciences, DAS, Single Nucleotide, meta-analysis, Genetic Loci, Child, Preschool, Genome-Wide Association Study, perimä, lukutaito, genome-wide association, SDG 4 - Quality Education
Abstract

Published August 23, 2022 The use of spoken and written language is a fundamental human capacity. Individual differences in reading- and language-related skills are influenced by genetic variation, with twin-based heritability estimates of 30 to 80% depending on the trait. The genetic architecture is complex, heterogeneous, and multifactorial, but investigations of contributions of single-nucleotide polymorphisms (SNPs) were thus far underpowered. We present a multicohort genome-wide association study (GWAS) of five traits assessed individually using psychometric measures (word reading, nonword reading, spelling, phoneme awareness, and nonword repetition) in samples of 13,633 to 33,959 participants aged 5 to 26 y. We identified genome-wide significant association with word reading (rs11208009, P = 1.098 × 1028) at a locus that has not been associated with intelligence or educational attainment. All five reading-/language-related traits showed robust SNP heritability, accounting for 13 to 26% of trait variability. Genomic structural equation modeling revealed a shared genetic factor explaining most of the variation in word/nonword reading, spelling, and phoneme awareness, which only partially overlapped with genetic variation contributing to nonword repetition, intelligence, and educational attainment. A multivariate GWAS of word/nonword reading, spelling, and phoneme awareness maximized power for follow-up investigation. Genetic correlation analysis with neuroimaging traits identified an association with the surface area of the banks of the left superior temporal sulcus, a brain region linked to the processing of spoken and written language. Heritability was enriched for genomic elements regulating gene expression in the fetal brain and in chromosomal regions that are depleted of Neanderthal variants. Together, these results provide avenues for deciphering the biological underpinnings of uniquely human traits. We thank all the children, twins, families, and participants who took part and are taking part in the 22 cohorts whose data contributed to these GWAS meta-analyses; the staff working on the different cohorts, including volunteers, study coordinators, interviewers, teachers, nurses, research scientists, general practitioners, midwives, psychologists, psychometrists, computer and laboratory technicians, and colleagues who assisted in the quality control and preparation of the imputed GWAS data; and the pharmacies and hospitals that were involved. B.M., B.M.-M., B.S.P., C.F., E.E., E.V., G.A., M.v.D., and S.E.F. are supported by the Max Planck Society. A.G. and T.F.M.A. were supported by the Munich Cluster for Systems Neurology (SyNergy), and A.G. was supported by Fondazione Umberto Veronesi. A.T.M. is supported by National Health and Medical Research Council of Australia (NHMRC) Grants 1105008 and 1195955 and Centre of Research Excellence Grant 1116976. A.J.O.W. is supported by NHMRC Grant 1173896. B.S.P. is supported by Simons Foundation Autism Research Initiative Grant 514787. C.Y.S. works in the Medical Research Council Integrative Epidemiology Unit at the University of Bristol (MC_UU_00011/3). D.I.B. acknowledges Royal Netherlands Academy of Science Professor Award PAH/6635. E.E. is supported by NIH Grant R01DC016977. E.G.W. and J.R.G. are supported by National Institute of Child Health and Human Development (NICHD) Grant P50 HD 27802. F.R. is supported by Agence Nationale de la Recherche Grants ANR-06-NEURO-019-01, ANR-17-EURE-0017 IEC, ANR-10-IDEX-0001-02 PSL, and ANR-11-BSV4-014-01 and European Commission Grant LSHM-CT-2005-018696. H.T. is supported by the Netherlands Organization for Scientific Research (NWO) and Netherlands Organisation for Health Research and Development (ZonMW) Grant VICI 016.VICI.170.200. J.C.D. was supported by NICHD Grant P50 HD 27802. J.J.M., J.B.To., and T.K. were supported by NIH Grant R01 DC014489. K.M.P. was supported by the Hospital for Sick Children Research Training Program (Restracomp). K.R. is supported by a Sir Henry Wellcome Postdoctoral Fellowship (213514/Z/18/Z). M.J.S. is supported by Wellcome Trust Grant WT082032MA. S.P. and F.A. are supported by Royal Society Grants UF150663 and RGF\EA\180141. T.B. is supported by Institut Pasteur, the Bettencourt-Schueller Foundation, and Université de Paris. The Adolescent Brain Cognitive Development Study is supported by the NIH and additional federal partners (NIH Grants U01DA041048, U01DA050989, U01DA051016, U01DA041022, U01DA051018, U01DA051037, U01DA050987, U01DA041174, U01DA041106, U01DA041117, U01DA041028, U01DA041134, U01DA050988, U01DA051039, U01DA041156, U01DA041025, U01DA041120, U01DA051038, U01DA041148, U01DA041093, U01DA041089, U24DA041123, and U24DA041147). The Aston Cohort was supported by funding from European Union (EU) Horizon 2020 Programme 641652 and Waterloo Foundation Grant 797/17290. The St. Andrews Bioinformatics Unit is funded by Wellcome Trust Grants 105621/Z/14/Z and 204821/Z/16/Z. ALSPAC is supported by UK Medical Research Council and Wellcome Grant 217065/Z/19/Z and the University of Bristol. A comprehensive list of grant funding is available on the ALSPAC website (http://www.bristol.ac.uk/alspac/external/documents/grant-acknowledgements.pdf). The Basque Center on Cognition, Brain and Language (BCBL) cohort was supported by the Basque Government through the Basic Excellence Research Centre program and the Agencia Estatal de Investigación through BCBL Severo Ochoa excellence accreditation. The Brisbane Adolescent Twin Sample was supported by Australian Research Council Grants A7960034, A79906588, A79801419, DP0212016, and DP0343921, with genotyping funded by the NHMRC Grant 389891. The Colorado Learning Disabilities Research Center cohort was supported by NICHD Grant P50 HD 27802. The Early Language in Victoria Study was supported by NHMRC Grant 436958. The Familial Influences on Literacy Abilities cohort is supported by the University of Amsterdam, the Max Planck Institue Nijmegen, and NWO Grants Rubicon 446-12-005 and VENI 451-15-017. The GRaD study was funded by the Manton Foundation, NIH Grants P50-HD027802 and K99-HD094902, and the Lambert Family. NeuroDys was funded by an EU Sixth Framework Program grant to the NeuroDys Consortium, Swiss National Science Foundation Grant 32-108130, and Austrian Science Fund Grant 18351-B02. The Netherlands Twin Register is funded by NWO Grants 480-04-004, 481-08-011, 056-32-010, 024.001.003, 480-15-001/674, 184.021.007, 184.033.111, and 56-464-14192; ZonMW Grants 911-09-032 and 912-10-020; the Amsterdam Public Health and Amsterdam Reproduction and Development Research Institutes; European Science Council Grant ERC Advanced 230374; EU Seventh Framework Program (FP7) Grant FP7/2007-2013: 602768; National Institute of Mental Health (NIMH) Grants U24 MH068457-06, R01 MH58799-03, and 1RC2 MH089995; and the Avera Institute for Human Genetics. The Pediatric Imaging, Neurocognition, and Genetics cohort is funded by NIH Grant RC2DA029475, the National Institute on Drug Abuse, and the Eunice Kennedy Shriver NICHD. The Philadelphia Neurodevelopmental Cohort is funded by NIH Grants RC2MH089983 and RC2MH089924, an institutional development award to the Center for Applied Genomics from The Children’s Hospital of Philadelphia, and a donation from Adele and Daniel Kubert and thanks the NIH data repository. The Raine study was supported by long-term funding from NHMRC Grants 572613, 403981, and 1059711 and Canadian Institutes of Health Research (CIHR) Grant MOP-82893. Funding was also provided by the University of Western Australia, Curtin University, the Women and Infants Research Foundation, the Telethon Kids Institute, Edith Cowan University, Murdoch University, the University of Notre Dame Australia, and the Raine Medical Research Foundation. The Raine study analyses were supported by the Pawsey Supercomputing Centre with funding from the Australian Government and the Government of Western Australia. The Saguenay Youth Study is supported by the CIHR, the Heart and Stroke Foundation of Quebec, and the Canadian Foundation for Innovation. The SLI Consortium was funded by Wellcome Trust Grant 076566 and UK Medical Research Council Grant G1000569. The Twins Early Development Study is supported by UK Medical Research Council Grants MR/V012878/1 and MR/M021475/1, NIH Grant AG046938, and the EU FP7 grant FP7/2007-2013/: 602768. Toronto was supported by CIHR Grant MOP-133440. UK Dyslexia was supported by Wellcome Trust Grants 076566/Z/05/Z and 075491/Z/04, Waterloo Foundation Grant 797–1720, EU Grant 018696, and Royal Society Grant UF100463. The York cohort was funded by Wellcome Trust Grant 082036/B/07/Z. We acknowledge iPSYCH for sharing their summary statistics. The iPSYCH team was supported by Lundbeck Foundation Grants R102-A9118, R155-2014-1724, and R248-2017-2003; NIMH Grant 1U01MH109514-01; and the Universities and University Hospitals of Aarhus and Copenhagen. The Danish National Biobank resource was supported by the Novo Nordisk Foundation. High-performance computer capacity was provided by the Center for Genomics and Personalized Medicine and the Centre for Integrative Sequencing, Aarhus University, Denmark.

Published
2022
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3. Challenges for Implementation in Diverse Settings: reflections on two randomised controlled trials of educational interventions in South American communities

Author

Newbury, D.F., Mesa, C., Puglisis, M., Nash, M., Nag, S., Hulme, C., Snowling, M.J., Newbury, D.F., Mesa, C., Puglisis, M., Nash, M., Nag, S., Hulme, C., and Snowling, M.J.

Abstract

Research in the UK suggests that multi-componential interventions focusing on language and pre-literacy skills can improve children’s reading and language skills. However, simple translations of such programs may not produce equivalent effects in diverse communities. The reasons for this are multi-faceted and include factors beyond the rationale and content of the intervention programs themselves. Understanding these factors is critical for creating programs that will generalise across settings. In this review, we reflect upon challenges encountered in two reading and language intervention programs in South America to identify community and cultural contextual factors that can influence the implementation and scalability of educational programs. We use our findings to develop an education-specific framework to guide the development and implementation of high-quality evidence-based approaches to language and literacy intervention. Our model guides implementation practices in diverse contexts and stresses the importance of the evidence-base and communication.

Published
2022

5. Mutation-specific pathophysiological mechanisms define different neurodevelopmental disorders associated with SATB1 dysfunction

Author

Hoed, J. den, Boer, E. de, Voisin, N., Dingemans, A.J.M., Guex, N., Wiel, L.J.M. van de, Nellaker, C., Amudhavalli, S.M., Banka, S., Bena, F.S., Ben-Zeev, B., Bonagura, V.R., Bruel, A.L., Brunet, T., Brunner, H.G., Chew, H.B., Chrast, J., Cimbalistienė, L., Coon, H., Délot, E.C., Démurger, F., Denommé-Pichon, A.S., Depienne, C., Donnai, D., Dyment, D.A., Elpeleg, O., Faivre, L., Gilissen, C.F., Granger, L., Haber, B., Hachiya, Y., Abedi, Y.H., Hanebeck, J., Hehir-Kwa, J.Y., Horist, B., Itai, T., Jackson, A., Jewell, R., Jones, K.L., Joss, S., Kashii, H., Kato, M., Kattentidt-Mouravieva, A.A., Kok, F., Kotzaeridou, U., Krishnamurthy, V., Kučinskas, V., Kuechler, A., Lavillaureix, A., Liu, P, Manwaring, L., Matsumoto, N., Mazel, B., McWalter, K., Meiner, V., Mikati, M.A., Miyatake, S., Mizuguchi, T., Moey, L.H., Mohammed, S, Mor-Shaked, H., Mountford, H., Newbury-Ecob, R., Odent, S., Orec, L., Osmond, M., Palculict, T.B., Parker, M., Petersen, A.K., Pfundt, R.P., Preikšaitienė, E., Radtke, K., Ranza, E., Rosenfeld, J.A., Santiago-Sim, T., Schwager, C., Sinnema, M., Snijders Blok, L., Spillmann, R.C., Stegmann, A.P.A., Thiffault, I., Tran, L., Vaknin-Dembinsky, A., Vedovato-Dos-Santos, J.H., Schrier Vergano, S.A., Vilain, E., Vitobello, A., Wagner, M., Waheeb, A., Willing, M., Zuccarelli, B., Kini, U., Newbury, D.F., Kleefstra, T., Reymond, A., Fisher, S.E., Vissers, L.E.L.M., Hoed, J. den, Boer, E. de, Voisin, N., Dingemans, A.J.M., Guex, N., Wiel, L.J.M. van de, Nellaker, C., Amudhavalli, S.M., Banka, S., Bena, F.S., Ben-Zeev, B., Bonagura, V.R., Bruel, A.L., Brunet, T., Brunner, H.G., Chew, H.B., Chrast, J., Cimbalistienė, L., Coon, H., Délot, E.C., Démurger, F., Denommé-Pichon, A.S., Depienne, C., Donnai, D., Dyment, D.A., Elpeleg, O., Faivre, L., Gilissen, C.F., Granger, L., Haber, B., Hachiya, Y., Abedi, Y.H., Hanebeck, J., Hehir-Kwa, J.Y., Horist, B., Itai, T., Jackson, A., Jewell, R., Jones, K.L., Joss, S., Kashii, H., Kato, M., Kattentidt-Mouravieva, A.A., Kok, F., Kotzaeridou, U., Krishnamurthy, V., Kučinskas, V., Kuechler, A., Lavillaureix, A., Liu, P, Manwaring, L., Matsumoto, N., Mazel, B., McWalter, K., Meiner, V., Mikati, M.A., Miyatake, S., Mizuguchi, T., Moey, L.H., Mohammed, S, Mor-Shaked, H., Mountford, H., Newbury-Ecob, R., Odent, S., Orec, L., Osmond, M., Palculict, T.B., Parker, M., Petersen, A.K., Pfundt, R.P., Preikšaitienė, E., Radtke, K., Ranza, E., Rosenfeld, J.A., Santiago-Sim, T., Schwager, C., Sinnema, M., Snijders Blok, L., Spillmann, R.C., Stegmann, A.P.A., Thiffault, I., Tran, L., Vaknin-Dembinsky, A., Vedovato-Dos-Santos, J.H., Schrier Vergano, S.A., Vilain, E., Vitobello, A., Wagner, M., Waheeb, A., Willing, M., Zuccarelli, B., Kini, U., Newbury, D.F., Kleefstra, T., Reymond, A., Fisher, S.E., and Vissers, L.E.L.M.

Abstract

Contains fulltext : 231687.pdf (Publisher’s version ) (Closed access), Whereas large-scale statistical analyses can robustly identify disease-gene relationships, they do not accurately capture genotype-phenotype correlations or disease mechanisms. We use multiple lines of independent evidence to show that different variant types in a single gene, SATB1, cause clinically overlapping but distinct neurodevelopmental disorders. Clinical evaluation of 42 individuals carrying SATB1 variants identified overt genotype-phenotype relationships, associated with different pathophysiological mechanisms, established by functional assays. Missense variants in the CUT1 and CUT2 DNA-binding domains result in stronger chromatin binding, increased transcriptional repression, and a severe phenotype. In contrast, variants predicted to result in haploinsufficiency are associated with a milder clinical presentation. A similarly mild phenotype is observed for individuals with premature protein truncating variants that escape nonsense-mediated decay, which are transcriptionally active but mislocalized in the cell. Our results suggest that in-depth mutation-specific genotype-phenotype studies are essential to capture full disease complexity and to explain phenotypic variability.

Published
2021

8. Homozygous microdeletion of exon 5 in znf277 in a girl with specific language impairment

Author

Ceroni, F., Simpson, N.H., Francks, C., Baird, G., Conti-Ramsden, G., Clark, A., Bolton, P.F., Hennessy, E.R., Donnelly, P, Bentley, D.R., Martin, H., Parr, J., Pagnamenta, A.T., Maestrini, E., Bacchelli, E., Fisher, S.E., Newbury, D.F., Imgsac, ., Consortium, S.L.I., and Consortium, W.G.S.

Subjects
Neuroinformatics
Abstract

Contains fulltext : 133117.pdf (Publisher’s version ) (Open Access)

Published
2014
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9. Next-gen sequencing identifies non-coding variation disrupting miRNA-binding sites in neurological disorders.

Author

Devanna, P., Chen, X.S., Ho, J., Gajewski, D., Smith, S.D., Gialluisi, A., Francks, C., Fisher, S.E., Newbury, D.F., Vernes, S.C., Devanna, P., Chen, X.S., Ho, J., Gajewski, D., Smith, S.D., Gialluisi, A., Francks, C., Fisher, S.E., Newbury, D.F., and Vernes, S.C.

Abstract

Contains fulltext : 181457.pdf (publisher's version ) (Open Access), Understanding the genetic factors underlying neurodevelopmental and neuropsychiatric disorders is a major challenge given their prevalence and potential severity for quality of life. While large-scale genomic screens have made major advances in this area, for many disorders the genetic underpinnings are complex and poorly understood. To date the field has focused predominantly on protein coding variation, but given the importance of tightly controlled gene expression for normal brain development and disorder, variation that affects non-coding regulatory regions of the genome is likely to play an important role in these phenotypes. Herein we show the importance of 3 prime untranslated region (3'UTR) non-coding regulatory variants across neurodevelopmental and neuropsychiatric disorders. We devised a pipeline for identifying and functionally validating putatively pathogenic variants from next generation sequencing (NGS) data. We applied this pipeline to a cohort of children with severe specific language impairment (SLI) and identified a functional, SLI-associated variant affecting gene regulation in cells and post-mortem human brain. This variant and the affected gene (ARHGEF39) represent new putative risk factors for SLI. Furthermore, we identified 3'UTR regulatory variants across autism, schizophrenia and bipolar disorder NGS cohorts demonstrating their impact on neurodevelopmental and neuropsychiatric disorders. Our findings show the importance of investigating non-coding regulatory variants when determining risk factors contributing to neurodevelopmental and neuropsychiatric disorders. In the future, integration of such regulatory variation with protein coding changes will be essential for uncovering the genetic causes of complex neurological disorders and the fundamental mechanisms underlying health and disease.Molecular Psychiatry advance online publication, 14 March 2017; doi:10.1038/mp.2017.30.

Published
2017

10. Next-generation DNA sequencing identifies novel gene variants and pathways involved in specific language impairment

Author

Chen, X.S., Reader, R.H., Hoischen, A., Veltman, J.A., Simpson, N.H., Francks, C., Newbury, D.F., Fisher, S.E., Chen, X.S., Reader, R.H., Hoischen, A., Veltman, J.A., Simpson, N.H., Francks, C., Newbury, D.F., and Fisher, S.E.

Abstract

Contains fulltext : 174783.pdf (publisher's version ) (Open Access), A significant proportion of children have unexplained problems acquiring proficient linguistic skills despite adequate intelligence and opportunity. Developmental language disorders are highly heritable with substantial societal impact. Molecular studies have begun to identify candidate loci, but much of the underlying genetic architecture remains undetermined. We performed whole-exome sequencing of 43 unrelated probands affected by severe specific language impairment, followed by independent validations with Sanger sequencing, and analyses of segregation patterns in parents and siblings, to shed new light on aetiology. By first focusing on a pre-defined set of known candidates from the literature, we identified potentially pathogenic variants in genes already implicated in diverse language-related syndromes, including ERC1, GRIN2A, and SRPX2. Complementary analyses suggested novel putative candidates carrying validated variants which were predicted to have functional effects, such as OXR1, SCN9A and KMT2D. We also searched for potential "multiple-hit" cases; one proband carried a rare AUTS2 variant in combination with a rare inherited haplotype affecting STARD9, while another carried a novel nonsynonymous variant in SEMA6D together with a rare stop-gain in SYNPR. On broadening scope to all rare and novel variants throughout the exomes, we identified biological themes that were enriched for such variants, including microtubule transport and cytoskeletal regulation.

Published
2017

12. Reply to pembrey et al: 'Znf277 microdeletions, specific language impairment and the meiotic mismatch methylation (3m) hypothesis'

Author

Ceroni, F., Simpson, N.H., Francks, C., Baird, G., Conti-Ramsden, G., Clark, A., Bolton, P.F., Hennessy, E.R., Donnelly, P, Bentley, D.R., Martin, H., Parr, J., Pagnamenta, A.T., Maestrini, E., Bacchelli, E., Fisher, S.E., Newbury, D.F., Imgsac, ., Consrtium, S.L.I., Consortium, W.G.S., Ceroni, Fabiola, Simpson, Nuala H., Francks, Clyde, Baird, Gillian, Conti-Ramsden, Gina, Clark, Ann, Bolton, Patrick F., Hennessy, Elizabeth R., Donnelly, Peter, Bentley, David R., Martin, Hilary, Parr, Jeremy, Pagnamenta, Alistair T., Maestrini, Elena, Bacchelli, Elena, Fisher, Simon E., and Newbury, Dianne F.

Subjects
Proband, Male, Neuroinformatics, medicine.medical_specialty, Letter, DNA-Binding Protein, Exon, Biology, Specific language impairment, behavioral disciplines and activities, Language Development Disorder, 03 medical and health sciences, Genetic linkage, parasitic diseases, medicine, Genetics, Humans, Language Development Disorders, Risk factor, Allele frequency, Genetics (clinical), 030304 developmental biology, Sequence Deletion, 0303 health sciences, 030305 genetics & heredity, Exons, medicine.disease, Penetrance, DNA-Binding Proteins, Cohort, Medical genetics, lipids (amino acids, peptides, and proteins), Female, Human
Abstract

In a recent paper,1 we described a homozygous exonic microdeletion in ZNF277 in a girl with specific language impairment (SLI). This microdeletion was also identified in the heterozygous form in eight families of the SLI Consortium (SLIC) cohort and four families with ASD cases from the IMGSAC Cohort. We observed an increased allelic frequency of ZNF277 microdeletions in SLI probands (1.1%) compared with both ASD family members (0.3%) and unrelated controls (0.4%), suggesting that these microdeletions might be a risk factor for SLI. However, as the ZNF277 microdeletions showed incomplete segregation with the SLI phenotype, as they were also identified in unaffected family members and, in some cases, they were not inherited by the affected children (reverse discordance), we hypothesised that these CNVs might contribute to the SLI susceptibility in a complex manner, acting as a risk factor with a reduced penetrance.

Published
2015

13. Genome-wide analysis identifies a role for common copy number variants in specific language impairment

Author

Simpson, N.H., Ceroni, F., Reader, R.H., Covill, L.E., Knight, J.C., Hennessy, E.R., Bolton, P.F., Conti-Ramsden, G., O'Hare, A., Baird, G., Fisher, S.E., Newbury, D.F., and Consortium, S.L.I.

Subjects
Neuroinformatics
Abstract

An exploratory genome-wide copy number variant (CNV) study was performed in 127 independent cases with specific language impairment (SLI), their first-degree relatives (385 individuals) and 269 population controls. Language-impaired cases showed an increased CNV burden in terms of the average number of events (11.28 vs 10.01, empirical P=0.003), the total length of CNVs (717 vs 513 Kb, empirical P=0.0001), the average CNV size (63.75 vs 51.6 Kb, empirical P=0.0005) and the number of genes spanned (14.29 vs 10.34, empirical P=0.0007) when compared with population controls, suggesting that CNVs may contribute to SLI risk. A similar trend was observed in first-degree relatives regardless of affection status. The increased burden found in our study was not driven by large or de novo events, which have been described as causative in other neurodevelopmental disorders. Nevertheless, de novo CNVs might be important on a case-by-case basis, as indicated by identification of events affecting relevant genes, such as ACTR2 and CSNK1A1, and small events within known micro-deletion/-duplication syndrome regions, such as chr8p23.1. Pathway analysis of the genes present within the CNVs of the independent cases identified significant overrepresentation of acetylcholine binding, cyclic-nucleotide phosphodiesterase activity and MHC proteins as compared with controls. Taken together, our data suggest that the majority of the risk conferred by CNVs in SLI is via common, inherited events within a ‘common disorder–common variant’ model. Therefore the risk conferred by CNVs will depend upon the combination of events inherited (both CNVs and SNPs), the genetic background of the individual and the environmental factors.

Published
2015

14. Exome Sequencing in an Admixed Isolated Population Indicates NFXL1 Variants Confer a Risk for Specific Language Impairment

Author

Villanueva, P., Nudel, R., Hoischen, A., Fernandez, M.A., Simpson, N.H., Gilissen, C., Reader, R.H., Jara, L., Echeverry, M.M., Francks, C., Baird, G., Conti-Ramsden, G., O'Hare, A., Bolton, P.F., Hennessy, E.R., Palomino, H., Carvajal-Carmona, L., Veltman, J.A., Cazier, J.B., Barbieri, Z. De, Fisher, S.E., Newbury, D.F., Villanueva, P., Nudel, R., Hoischen, A., Fernandez, M.A., Simpson, N.H., Gilissen, C., Reader, R.H., Jara, L., Echeverry, M.M., Francks, C., Baird, G., Conti-Ramsden, G., O'Hare, A., Bolton, P.F., Hennessy, E.R., Palomino, H., Carvajal-Carmona, L., Veltman, J.A., Cazier, J.B., Barbieri, Z. De, Fisher, S.E., and Newbury, D.F.

Abstract

Contains fulltext : 144496.pdf (publisher's version ) (Open Access), Children affected by Specific Language Impairment (SLI) fail to acquire age appropriate language skills despite adequate intelligence and opportunity. SLI is highly heritable, but the understanding of underlying genetic mechanisms has proved challenging. In this study, we use molecular genetic techniques to investigate an admixed isolated founder population from the Robinson Crusoe Island (Chile), who are affected by a high incidence of SLI, increasing the power to discover contributory genetic factors. We utilize exome sequencing in selected individuals from this population to identify eight coding variants that are of putative significance. We then apply association analyses across the wider population to highlight a single rare coding variant (rs144169475, Minor Allele Frequency of 4.1% in admixed South American populations) in the NFXL1 gene that confers a nonsynonymous change (N150K) and is significantly associated with language impairment in the Robinson Crusoe population (p = 2.04 x 10-4, 8 variants tested). Subsequent sequencing of NFXL1 in 117 UK SLI cases identified four individuals with heterozygous variants predicted to be of functional consequence. We conclude that coding variants within NFXL1 confer an increased risk of SLI within a complex genetic model.

Published
2015

15. Genome-wide screening for DNA variants associated with reading and language traits

Author

Gialluisi, A., Newbury, D.F., Wilcutt, E.G., Olson, R.K., DeFries, J.C., Brandler, W.M., Pennington, B.F., Smith, S.D., Scerri, T.S., Simpson, N.H., Luciano, M., Evans, D.M., Bates, T.C., Stein, J.F., Talcott, J.B., Monaco, A.P., Paracchini, S., Francks, C., Fisher, S.E., Consortium, S.L.I., Gialluisi, A., Newbury, D.F., Wilcutt, E.G., Olson, R.K., DeFries, J.C., Brandler, W.M., Pennington, B.F., Smith, S.D., Scerri, T.S., Simpson, N.H., Luciano, M., Evans, D.M., Bates, T.C., Stein, J.F., Talcott, J.B., Monaco, A.P., Paracchini, S., Francks, C., Fisher, S.E., and Consortium, S.L.I.

Abstract

Item does not contain fulltext

Published
2014

16. Dual copy number variants involving 16p11 and 6q22 in a case of childhood apraxia of speech and pervasive developmental disorder

Author

Newbury, D.F., Mari, F., Akha, E.S., MacDermot, K.D., Canitano, R., Monaco, A.P., Taylor, J.C., Renieri, A., Fisher, S.E., Knight, S.J.L., Newbury, D.F., Mari, F., Akha, E.S., MacDermot, K.D., Canitano, R., Monaco, A.P., Taylor, J.C., Renieri, A., Fisher, S.E., and Knight, S.J.L.

Abstract

Contains fulltext : 111324.pdf (publisher's version ) (Closed access)

Published
2013

17. Investigation of dyslexia and SLI risk variants in reading- and language-impaired subjects

Author

Newbury, D.F., Paracchini, S., Scerri, T.S., Winchester, L., Addis, L., Richardson, A.J., Walter, J., Stein, J.F., Talcott, J.B., Monaco, A.P., Newbury, D.F., Paracchini, S., Scerri, T.S., Winchester, L., Addis, L., Richardson, A.J., Walter, J., Stein, J.F., Talcott, J.B., and Monaco, A.P.

Abstract

Dyslexia (or reading disability) and specific language impairment (or SLI) are common childhood disorders that show considerable co-morbidity and diagnostic overlaps and have been suggested to share some genetic aetiology. Recently, genetic risk variants have been identified for SLI and dyslexia enabling the direct evaluation of possible shared genetic influences between these disorders. In this study we investigate the role of variants in these genes (namely MRPL19/C20RF3, ROBO1, DCDC2, KIAA0319, DYX1C1, CNTNAP2, ATP2C2 and CMIP) in the aetiology of SLI and dyslexia. We perform case–control and quantitative association analyses using measures of oral and written language skills in samples of SLI and dyslexic families and cases. We replicate association between KIAA0319 and DCDC2 and dyslexia and provide evidence to support a role for KIAA0319 in oral language ability. In addition, we find association between reading-related measures and variants in CNTNAP2 and CMIP in the SLI families.

Published
2011

18. Sixteen New Cases Contributing to the Characterization of Patients with Distal 22q11.2 Microduplications

Author

Wincent, J., primary, Bruno, D.L., additional, van Bon, B.W.M., additional, Bremer, A., additional, Stewart, H., additional, Bongers, E.M.H.F., additional, Ockeloen, C.W., additional, Willemsen, M.H., additional, Keays, D.A.D., additional, Baird, G., additional, Newbury, D.F., additional, Kleefstra, T., additional, Marcelis, C., additional, Kini, U., additional, Stark, Z., additional, Savarirayan, R., additional, Sheffield, L.J., additional, Zuffardi, O., additional, Slater, H.R., additional, de Vries, B.B., additional, Knight, S.J.L., additional, Anderlid, B.-M., additional, and Schoumans, J., additional

Published
2010
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20. Mutation-specific pathophysiological mechanisms define different neurodevelopmental disorders associated with SATB1 dysfunction

Author

den Hoed, J., de Boer, E., Voisin, N., Dingemans, A.J.M., Guex, N., Wiel, L., Nellaker, C., Amudhavalli, S.M., Banka, S., Bena, F.S., Ben-Zeev, B., Bonagura, V.R., Bruel, A.-L., Brunet, T., Brunner, H.G., Chew, H.B., Chrast, J., Cimbalistienė, L., Coon, H., Délot, E.C., Démurger, F., Denommé-Pichon, A.-S., Depienne, C., Donnai, D., Dyment, D.A., Elpeleg, O., Faivre, L., Gilissen, C., Granger, L., Haber, B., Hachiya, Y., Abedi, Y.H., Hanebeck, J., Hehir-Kwa, J.Y., Horist, B., Itai, T., Jackson, A., Jewell, R., Jones, K.L., Joss, S., Kashii, H., Kato, M., Kattentidt-Mouravieva, A.A., Kok, F., Kotzaeridou, U., Krishnamurthy, V., Kučinskas, V., Kuechler, A., Lavillaureix, A., Liu, P., Manwaring, L., Matsumoto, N., Mazel, B., McWalter, K., Meiner, V., Mikati, M.A., Miyatake, S., Mizuguchi, T., Moey, L.H., Mohammed, S., Mor-Shaked, H., Mountford, H., Newbury-Ecob, R., Odent, S., Orec, L., Osmond, M., Palculict, T.B., Parker, M., Petersen, A., Pfundt, R., Preikšaitienė, E., Radtke, K., Ranza, E., Rosenfeld, J.A., Santiago-Sim, T., Schwager, C., Sinnema, M., Blok, L.S., Spillmann, R.C., Stegmann, A.P.A., Thiffault, I., Tran, L., Vaknin-Dembinsky, A., Vedovato-dos-Santos, J.H., Vergano, S.A., Vilain, E., Vitobello, A., Wagner, M., Waheeb, A., Willing, M., Zuccarelli, B., Kini, U., Newbury, D.F., Kleefstra, T., Reymond, A., Fisher, S.E., Vissers, L.E.L.M., den Hoed, J., de Boer, E., Voisin, N., Dingemans, A.J.M., Guex, N., Wiel, L., Nellaker, C., Amudhavalli, S.M., Banka, S., Bena, F.S., Ben-Zeev, B., Bonagura, V.R., Bruel, A.-L., Brunet, T., Brunner, H.G., Chew, H.B., Chrast, J., Cimbalistienė, L., Coon, H., Délot, E.C., Démurger, F., Denommé-Pichon, A.-S., Depienne, C., Donnai, D., Dyment, D.A., Elpeleg, O., Faivre, L., Gilissen, C., Granger, L., Haber, B., Hachiya, Y., Abedi, Y.H., Hanebeck, J., Hehir-Kwa, J.Y., Horist, B., Itai, T., Jackson, A., Jewell, R., Jones, K.L., Joss, S., Kashii, H., Kato, M., Kattentidt-Mouravieva, A.A., Kok, F., Kotzaeridou, U., Krishnamurthy, V., Kučinskas, V., Kuechler, A., Lavillaureix, A., Liu, P., Manwaring, L., Matsumoto, N., Mazel, B., McWalter, K., Meiner, V., Mikati, M.A., Miyatake, S., Mizuguchi, T., Moey, L.H., Mohammed, S., Mor-Shaked, H., Mountford, H., Newbury-Ecob, R., Odent, S., Orec, L., Osmond, M., Palculict, T.B., Parker, M., Petersen, A., Pfundt, R., Preikšaitienė, E., Radtke, K., Ranza, E., Rosenfeld, J.A., Santiago-Sim, T., Schwager, C., Sinnema, M., Blok, L.S., Spillmann, R.C., Stegmann, A.P.A., Thiffault, I., Tran, L., Vaknin-Dembinsky, A., Vedovato-dos-Santos, J.H., Vergano, S.A., Vilain, E., Vitobello, A., Wagner, M., Waheeb, A., Willing, M., Zuccarelli, B., Kini, U., Newbury, D.F., Kleefstra, T., Reymond, A., Fisher, S.E., and Vissers, L.E.L.M.

Abstract

Whereas large-scale statistical analyses can robustly identify disease-gene relationships, they do not accurately capture genotype-phenotype correlations or disease mechanisms. We use multiple lines of independent evidence to show that different variant types in a single gene, SATB1, cause clinically overlapping but distinct neurodevelopmental disorders. Clinical evaluation of 42 individuals carrying SATB1 variants identified overt genotype-phenotype relationships, associated with different pathophysiological mechanisms, established by functional assays. Missense variants in the CUT1 and CUT2 DNA-binding domains result in stronger chromatin binding, increased transcriptional repression and a severe phenotype. In contrast, variants predicted to result in haploinsufficiency are associated with a milder clinical presentation. A similarly mild phenotype is observed for individuals with premature protein truncating variants that escape nonsense-mediated decay, which are transcriptionally active but mislocalized in the cell. Our results suggest that in-depth mutation-specific genotype-phenotype studies are essential to capture full disease complexity and to explain phenotypic variability.

21. Multidisciplinary investigation links backward-speech trait and working memory through genetic mutation

Author

Prekovic, Stefan, Đurđević, Dušica Filipović, Csifcsák, Gábor, Šveljo, Olivera, Stojković, Oliver, Janković, Milica, Koprivšek, Katarina, Covill, Laura E, Lučić, Milos, Van den Broeck, Thomas, Helsen, Christine, Ceroni, Fabiola, Claessens, Frank, Newbury, Dianne F, Prekovic S., Durdevic D.F., Csifcsak G., Sveljo O., Stojkovic O., Jankovic M., Koprivsek K., Covill L.E., Lucic M., Van Den Broeck T., Helsen C., Ceroni F., Claessens F., and Newbury D.F.

Subjects
Adult, Male, Quantitative Trait Loci, Intracellular Signaling Peptides and Proteins, Middle Aged, Article, Semantics, Memory, Short-Term, Reading, Receptor-Interacting Protein Serine-Threonine Kinases, Mutation, Humans, Female, Serbia, Backward-speech, Language, Working memory, RIC3
Abstract

Case studies of unusual traits can provide unique snapshots of the effects of modified systems. In this study, we report on an individual from a Serbian family with the ability to rapidly, accurately and voluntarily speak backwards. We consider psychological, neural and genetic correlates of this trait to identify specific relevant neural mechanisms and new molecular pathways for working memory and speech-related tasks. EEG data suggest that the effect of word reversal precedes semantic integration of visually presented backward-words, and that event-related potentials above the frontal lobe are affected by both word reversal and the maintenance of backward-words in working memory. fMRI revealed that the left fusiform gyrus may facilitate the production of backward-speech. Exome sequencing identified three novel coding variants of potential significance in the RIC3, RIPK1 and ZBED5 genes. Taken together, our data suggest that, in this individual, the ability to speak backwards is afforded by an extraordinary working memory capacity. We hypothesise that this is served by cholinergic projections from the basal forebrain to the frontal cortex and supported by visual semantic loops within the left fusiform gyrus and that these neural processes may be mediated by a genetic mutation in RIC3; a chaperone for nicotinic acetylcholine receptors. ispartof: Scientific Reports vol:6 issue:1 ispartof: location:England status: Published online

Published
2016
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22. Genome-wide analysis identifies a role for common copy number variants in specific language impairment

Author

Simpson N. H., Ceroni F., Reader R. H., Covill L. E., Knight J. C., Hennessy E. R., Bolton P. F., Conti-Ramsden G., O'Hare A., Baird G., Fisher S. E., Newbury D. F., Nudel R., Monaco A. P., Simonoff E., Pickles A., Slonims V., Dworzynski K., Everitt A., Clark A., Watson J., Seckl J., Cowie H., Cohen W., Nasir J., Bishop D. V. M., Simkin Z., Simpson N.H., Ceroni F., Reader R.H., Covill L.E., Knight J.C., Nudel R., Monaco A.P., Simonoff E., Pickles A., Slonims V., Dworzynski K., Everitt A., Clark A., Watson J., Seckl J., Cowie H., Cohen W., Nasir J., Bishop D.V.M., Simkin Z, Hennessy E.R., Bolton P.F., Conti-Ramsden G., O'Hare A., Baird G., Fisher S.E., and Newbury D.F.

Subjects
Male, Language Disorders, Genome, DNA Copy Number Variations, Specific Language Impairment, Polymorphism, Single Nucleotide, Article, Copy Number Variations, Case-Control Studies, Humans, Female, Genetic Predisposition to Disease, Aged, Genome-Wide Association Study, Language
Abstract

An exploratory genome-wide copy number variant (CNV) study was performed in 127 independent cases with specific language impairment (SLI), their first-degree relatives (385 individuals) and 269 population controls. Language-impaired cases showed an increased CNV burden in terms of the average number of events (11.28 vs 10.01, empirical P=0.003), the total length of CNVs (717 vs 513 Kb, empirical P=0.0001), the average CNV size (63.75 vs 51.6 Kb, empirical P=0.0005) and the number of genes spanned (14.29 vs 10.34, empirical P=0.0007) when compared with population controls, suggesting that CNVs may contribute to SLI risk. A similar trend was observed in first-degree relatives regardless of affection status. The increased burden found in our study was not driven by large or de novo events, which have been described as causative in other neurodevelopmental disorders. Nevertheless, de novo CNVs might be important on a case-by-case basis, as indicated by identification of events affecting relevant genes, such as ACTR2 and CSNK1A1, and small events within known micro-deletion/-duplication syndrome regions, such as chr8p23.1. Pathway analysis of the genes present within the CNVs of the independent cases identified significant overrepresentation of acetylcholine binding, cyclic-nucleotide phosphodiesterase activity and MHC proteins as compared with controls. Taken together, our data suggest that the majority of the risk conferred by CNVs in SLI is via common, inherited events within a 'common disorder-common variant' model. Therefore the risk conferred by CNVs will depend upon the combination of events inherited (both CNVs and SNPs), the genetic background of the individual and the environmental factors.

Published
2014

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