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19 results on '"Sousa I"'

1. Dense genotyping of immune-related loci implicates host responses to microbial exposure in Behçet's disease susceptibility.

Author

Takeuchi M, Mizuki N, Meguro A, Ombrello MJ, Kirino Y, Satorius C, Le J, Blake M, Erer B, Kawagoe T, Ustek D, Tugal-Tutkun I, Seyahi E, Ozyazgan Y, Sousa I, Davatchi F, Francisco V, Shahram F, Abdollahi BS, Nadji A, Shafiee NM, Ghaderibarmi F, Ohno S, Ueda A, Ishigatsubo Y, Gadina M, Oliveira SA, Gül A, Kastner DL, and Remmers EF

Subjects
Adult, Alleles, Case-Control Studies, Female, Genome-Wide Association Study methods, Genotype, Humans, Iran, Male, Turkey, Behcet Syndrome genetics, Genetic Loci genetics, Genetic Predisposition to Disease genetics, Polymorphism, Single Nucleotide genetics
Abstract

We analyzed 1,900 Turkish Behçet's disease cases and 1,779 controls genotyped with the Immunochip. The most significantly associated SNP was rs1050502, a tag SNP for HLA-B*51. In the Turkish discovery set, we identified three new risk loci, IL1A-IL1B, IRF8, and CEBPB-PTPN1, with genome-wide significance (P < 5 × 10 -8 ) by direct genotyping and ADO-EGR2 by imputation. We replicated the ADO-EGR2, IRF8, and CEBPB-PTPN1 loci by genotyping 969 Iranian cases and 826 controls. Imputed data in 608 Japanese cases and 737 controls further replicated ADO-EGR2 and IRF8, and meta-analysis additionally identified RIPK2 and LACC1. The disease-associated allele of rs4402765, the lead marker at IL1A-IL1B, was associated with both decreased IL-1α and increased IL-1β production. ABO non-secretor genotypes for two ancestry-specific FUT2 SNPs showed strong disease association (P = 5.89 × 10 -15 ). Our findings extend the list of susceptibility genes shared with Crohn's disease and leprosy and implicate mucosal factors and the innate immune response to microbial exposure in Behçet's disease susceptibility.

Published
2017
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2. Genetic Variants Underlying Risk of Intracranial Aneurysms: Insights from a GWAS in Portugal.

Author

Abrantes P, Santos MM, Sousa I, Xavier JM, Francisco V, Krug T, Sobral J, Matos M, Martins M, Jacinto A, Coiteiro D, and Oliveira SA

Subjects
DNA genetics, Databases, Genetic, Female, Humans, Male, Middle Aged, Polymorphism, Single Nucleotide genetics, Portugal, Reproducibility of Results, Risk Factors, Genetic Predisposition to Disease, Genetic Variation, Genome-Wide Association Study, Intracranial Aneurysm genetics
Abstract

Subarachnoid hemorrhage (SAH) is a life-threatening event that most frequently leads to severe disability and death. Its most frequent cause is the rupture of a saccular intracranial aneurysm (IA), which is a blood vessel dilation caused by disease or weakening of the vessel wall. Although the genetic contribution to IA is well established, to date no single gene has been unequivocally identified as responsible for IA formation or rupture. We aimed to identify IA susceptibility genes in the Portuguese population through a pool-based multistage genome-wide association study. Replicate pools were allelotyped in triplicate in a discovery dataset (100 IA cases and 92 gender-matched controls) using the Affymetrix Human SNP Array 6.0. Top SNPs (absolute value of the relative allele score difference between cases and controls |RASdiff|≥13.0%) were selected for technical validation by individual genotyping in the discovery dataset. From the 101 SNPs successfully genotyped, 99 SNPs were nominally associated with IA. Replication of technically validated SNPs was conducted in an independent replication dataset (100 Portuguese IA cases and 407 controls). rs4667622 (between UBR3 and MYO3B), rs6599001 (between SCN11A and WDR48), rs3932338 (214 kilobases downstream of PRDM9), and rs10943471 (96 kilobases upstream of HTR1B) were associated with IA (unadjusted allelic chi-square tests) in the datasets tested (discovery: 6.84E-04≤P≤1.92E-02, replication: 2.66E-04≤P≤2.28E-02, and combined datasets: 6.05E-05≤P≤5.50E-04). Additionally, we confirmed the known association with IA of rs1333040 at the 9p21.3 genomic region, thus validating our dataset. These novel findings in the Portuguese population warrant further replication in additional independent studies, and provide additional candidates to more comprehensively understand IA etiopathogenesis.

Published
2015
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3. FOXE1 polymorphisms are associated with familial and sporadic nonmedullary thyroid cancer susceptibility.

Author

Tomaz RA, Sousa I, Silva JG, Santos C, Teixeira MR, Leite V, and Cavaco BM

Subjects
Adenocarcinoma, Follicular epidemiology, Adenocarcinoma, Follicular genetics, Aged, Aged, 80 and over, Gene Frequency, Humans, Linkage Disequilibrium, Middle Aged, Portugal epidemiology, Sequence Analysis, DNA, Thyroid Neoplasms epidemiology, Forkhead Transcription Factors genetics, Genetic Predisposition to Disease, Polymorphism, Genetic genetics, Thyroid Neoplasms genetics
Abstract

Objective: FOXE1 is a transcription factor required for thyroid differentiation and function. FOXE1 locus polymorphisms (chromosome 9q22.33) were recently associated with increased sporadic thyroid cancer risk. In this study, we aimed to investigate the association of FOXE1 variants with nonmedullary thyroid cancer (NMTC), in both sporadic and familial (FNMTC) cases from the Portuguese population., Design and Methods: Nine variants located at the FOXE1 locus were sequenced in genomic DNA from 60 FNMTC probands and 80 patients with sporadic NMTC. Alleles were tested for association with thyroid cancer, against 130 healthy matched Portuguese controls., Results: All variants were significantly associated with increased thyroid cancer risk when combining familial and sporadic cases (OR range = 1·62-2·58). In particular, two reported risk variants were associated with the disease: rs965513 (allele A) with familial (OR = 2·30, 95% CI = 1·48-3·59, P = 0·0002) and sporadic (OR = 2·81, 95% CI = 1·87-4·22, P < 0·0001) NMTC and rs1867277 (allele A) with the sporadic (OR = 1·76, 95% CI = 1·18-2·62, P = 0·0052) and combined NMTC cases (OR = 1·70, 95% CI = 1·21-2·40, P = 0·0022). Interestingly, we also identified association of FOXE1 polyalanine tract expansions (>14 alanines) with thyroid cancer risk, in both familial (OR = 2·56, 95% CI = 1·64-4·01, P < 0·0001) and sporadic (OR = 2·44, 95% CI = 1·61-3·68, P < 0·0001) cases., Conclusions: We found compelling evidence of association between FOXE1 variants and thyroid cancer risk in the Portuguese population. To our knowledge, this is the first study supporting the association of this locus with both sporadic and familial NMTC susceptibility., (© 2012 Blackwell Publishing Ltd.)

Published
2012
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4. Individual common variants exert weak effects on the risk for autism spectrum disorders.

Author

Anney R, Klei L, Pinto D, Almeida J, Bacchelli E, Baird G, Bolshakova N, Bölte S, Bolton PF, Bourgeron T, Brennan S, Brian J, Casey J, Conroy J, Correia C, Corsello C, Crawford EL, de Jonge M, Delorme R, Duketis E, Duque F, Estes A, Farrar P, Fernandez BA, Folstein SE, Fombonne E, Gilbert J, Gillberg C, Glessner JT, Green A, Green J, Guter SJ, Heron EA, Holt R, Howe JL, Hughes G, Hus V, Igliozzi R, Jacob S, Kenny GP, Kim C, Kolevzon A, Kustanovich V, Lajonchere CM, Lamb JA, Law-Smith M, Leboyer M, Le Couteur A, Leventhal BL, Liu XQ, Lombard F, Lord C, Lotspeich L, Lund SC, Magalhaes TR, Mantoulan C, McDougle CJ, Melhem NM, Merikangas A, Minshew NJ, Mirza GK, Munson J, Noakes C, Nygren G, Papanikolaou K, Pagnamenta AT, Parrini B, Paton T, Pickles A, Posey DJ, Poustka F, Ragoussis J, Regan R, Roberts W, Roeder K, Roge B, Rutter ML, Schlitt S, Shah N, Sheffield VC, Soorya L, Sousa I, Stoppioni V, Sykes N, Tancredi R, Thompson AP, Thomson S, Tryfon A, Tsiantis J, Van Engeland H, Vincent JB, Volkmar F, Vorstman JA, Wallace S, Wing K, Wittemeyer K, Wood S, Zurawiecki D, Zwaigenbaum L, Bailey AJ, Battaglia A, Cantor RM, Coon H, Cuccaro ML, Dawson G, Ennis S, Freitag CM, Geschwind DH, Haines JL, Klauck SM, McMahon WM, Maestrini E, Miller J, Monaco AP, Nelson SF, Nurnberger JI Jr, Oliveira G, Parr JR, Pericak-Vance MA, Piven J, Schellenberg GD, Scherer SW, Vicente AM, Wassink TH, Wijsman EM, Betancur C, Buxbaum JD, Cook EH, Gallagher L, Gill M, Hallmayer J, Paterson AD, Sutcliffe JS, Szatmari P, Vieland VJ, Hakonarson H, and Devlin B

Subjects
Alleles, Child, Child Development Disorders, Pervasive physiopathology, Female, Gene Frequency, Genotype, Humans, Language Development, Male, Polymorphism, Single Nucleotide, Risk Factors, Child Development Disorders, Pervasive genetics, Genetic Predisposition to Disease, Genome-Wide Association Study, Membrane Proteins genetics, Nerve Tissue Proteins genetics
Abstract

While it is apparent that rare variation can play an important role in the genetic architecture of autism spectrum disorders (ASDs), the contribution of common variation to the risk of developing ASD is less clear. To produce a more comprehensive picture, we report Stage 2 of the Autism Genome Project genome-wide association study, adding 1301 ASD families and bringing the total to 2705 families analysed (Stages 1 and 2). In addition to evaluating the association of individual single nucleotide polymorphisms (SNPs), we also sought evidence that common variants, en masse, might affect the risk. Despite genotyping over a million SNPs covering the genome, no single SNP shows significant association with ASD or selected phenotypes at a genome-wide level. The SNP that achieves the smallest P-value from secondary analyses is rs1718101. It falls in CNTNAP2, a gene previously implicated in susceptibility for ASD. This SNP also shows modest association with age of word/phrase acquisition in ASD subjects, of interest because features of language development are also associated with other variation in CNTNAP2. In contrast, allele scores derived from the transmission of common alleles to Stage 1 cases significantly predict case status in the independent Stage 2 sample. Despite being significant, the variance explained by these allele scores was small (Vm< 1%). Based on results from individual SNPs and their en masse effect on risk, as inferred from the allele score results, it is reasonable to conclude that common variants affect the risk for ASD but their individual effects are modest.

Published
2012
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5. A novel approach of homozygous haplotype sharing identifies candidate genes in autism spectrum disorder.

Author

Casey JP, Magalhaes T, Conroy JM, Regan R, Shah N, Anney R, Shields DC, Abrahams BS, Almeida J, Bacchelli E, Bailey AJ, Baird G, Battaglia A, Berney T, Bolshakova N, Bolton PF, Bourgeron T, Brennan S, Cali P, Correia C, Corsello C, Coutanche M, Dawson G, de Jonge M, Delorme R, Duketis E, Duque F, Estes A, Farrar P, Fernandez BA, Folstein SE, Foley S, Fombonne E, Freitag CM, Gilbert J, Gillberg C, Glessner JT, Green J, Guter SJ, Hakonarson H, Holt R, Hughes G, Hus V, Igliozzi R, Kim C, Klauck SM, Kolevzon A, Lamb JA, Leboyer M, Le Couteur A, Leventhal BL, Lord C, Lund SC, Maestrini E, Mantoulan C, Marshall CR, McConachie H, McDougle CJ, McGrath J, McMahon WM, Merikangas A, Miller J, Minopoli F, Mirza GK, Munson J, Nelson SF, Nygren G, Oliveira G, Pagnamenta AT, Papanikolaou K, Parr JR, Parrini B, Pickles A, Pinto D, Piven J, Posey DJ, Poustka A, Poustka F, Ragoussis J, Roge B, Rutter ML, Sequeira AF, Soorya L, Sousa I, Sykes N, Stoppioni V, Tancredi R, Tauber M, Thompson AP, Thomson S, Tsiantis J, Van Engeland H, Vincent JB, Volkmar F, Vorstman JA, Wallace S, Wang K, Wassink TH, White K, Wing K, Wittemeyer K, Yaspan BL, Zwaigenbaum L, Betancur C, Buxbaum JD, Cantor RM, Cook EH, Coon H, Cuccaro ML, Geschwind DH, Haines JL, Hallmayer J, Monaco AP, Nurnberger JI Jr, Pericak-Vance MA, Schellenberg GD, Scherer SW, Sutcliffe JS, Szatmari P, Vieland VJ, Wijsman EM, Green A, Gill M, Gallagher L, Vicente A, and Ennis S

Subjects
Adult, Child, Cluster Analysis, Cohort Studies, DNA Copy Number Variations, Female, Genotype, Homozygote, Humans, Linkage Disequilibrium, Male, Middle Aged, Nuclear Family, Polymorphism, Single Nucleotide, Child Development Disorders, Pervasive genetics, Genetic Predisposition to Disease genetics, Genome-Wide Association Study methods, Haplotypes genetics
Abstract

Autism spectrum disorder (ASD) is a highly heritable disorder of complex and heterogeneous aetiology. It is primarily characterized by altered cognitive ability including impaired language and communication skills and fundamental deficits in social reciprocity. Despite some notable successes in neuropsychiatric genetics, overall, the high heritability of ASD (~90%) remains poorly explained by common genetic risk variants. However, recent studies suggest that rare genomic variation, in particular copy number variation, may account for a significant proportion of the genetic basis of ASD. We present a large scale analysis to identify candidate genes which may contain low-frequency recessive variation contributing to ASD while taking into account the potential contribution of population differences to the genetic heterogeneity of ASD. Our strategy, homozygous haplotype (HH) mapping, aims to detect homozygous segments of identical haplotype structure that are shared at a higher frequency amongst ASD patients compared to parental controls. The analysis was performed on 1,402 Autism Genome Project trios genotyped for 1 million single nucleotide polymorphisms (SNPs). We identified 25 known and 1,218 novel ASD candidate genes in the discovery analysis including CADM2, ABHD14A, CHRFAM7A, GRIK2, GRM3, EPHA3, FGF10, KCND2, PDZK1, IMMP2L and FOXP2. Furthermore, 10 of the previously reported ASD genes and 300 of the novel candidates identified in the discovery analysis were replicated in an independent sample of 1,182 trios. Our results demonstrate that regions of HH are significantly enriched for previously reported ASD candidate genes and the observed association is independent of gene size (odds ratio 2.10). Our findings highlight the applicability of HH mapping in complex disorders such as ASD and offer an alternative approach to the analysis of genome-wide association data.

Published
2012
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6. A genome-wide scan for common alleles affecting risk for autism.

Author

Anney R, Klei L, Pinto D, Regan R, Conroy J, Magalhaes TR, Correia C, Abrahams BS, Sykes N, Pagnamenta AT, Almeida J, Bacchelli E, Bailey AJ, Baird G, Battaglia A, Berney T, Bolshakova N, Bölte S, Bolton PF, Bourgeron T, Brennan S, Brian J, Carson AR, Casallo G, Casey J, Chu SH, Cochrane L, Corsello C, Crawford EL, Crossett A, Dawson G, de Jonge M, Delorme R, Drmic I, Duketis E, Duque F, Estes A, Farrar P, Fernandez BA, Folstein SE, Fombonne E, Freitag CM, Gilbert J, Gillberg C, Glessner JT, Goldberg J, Green J, Guter SJ, Hakonarson H, Heron EA, Hill M, Holt R, Howe JL, Hughes G, Hus V, Igliozzi R, Kim C, Klauck SM, Kolevzon A, Korvatska O, Kustanovich V, Lajonchere CM, Lamb JA, Laskawiec M, Leboyer M, Le Couteur A, Leventhal BL, Lionel AC, Liu XQ, Lord C, Lotspeich L, Lund SC, Maestrini E, Mahoney W, Mantoulan C, Marshall CR, McConachie H, McDougle CJ, McGrath J, McMahon WM, Melhem NM, Merikangas A, Migita O, Minshew NJ, Mirza GK, Munson J, Nelson SF, Noakes C, Noor A, Nygren G, Oliveira G, Papanikolaou K, Parr JR, Parrini B, Paton T, Pickles A, Piven J, Posey DJ, Poustka A, Poustka F, Prasad A, Ragoussis J, Renshaw K, Rickaby J, Roberts W, Roeder K, Roge B, Rutter ML, Bierut LJ, Rice JP, Salt J, Sansom K, Sato D, Segurado R, Senman L, Shah N, Sheffield VC, Soorya L, Sousa I, Stoppioni V, Strawbridge C, Tancredi R, Tansey K, Thiruvahindrapduram B, Thompson AP, Thomson S, Tryfon A, Tsiantis J, Van Engeland H, Vincent JB, Volkmar F, Wallace S, Wang K, Wang Z, Wassink TH, Wing K, Wittemeyer K, Wood S, Yaspan BL, Zurawiecki D, Zwaigenbaum L, Betancur C, Buxbaum JD, Cantor RM, Cook EH, Coon H, Cuccaro ML, Gallagher L, Geschwind DH, Gill M, Haines JL, Miller J, Monaco AP, Nurnberger JI Jr, Paterson AD, Pericak-Vance MA, Schellenberg GD, Scherer SW, Sutcliffe JS, Szatmari P, Vicente AM, Vieland VJ, Wijsman EM, Devlin B, Ennis S, and Hallmayer J

Subjects
Alleles, DNA Copy Number Variations, Databases, Genetic, Genetic Variation, Genome, Human, Genotype, Humans, Risk Factors, White People genetics, Autistic Disorder genetics, Genetic Predisposition to Disease, Genome-Wide Association Study, Polymorphism, Single Nucleotide
Abstract

Although autism spectrum disorders (ASDs) have a substantial genetic basis, most of the known genetic risk has been traced to rare variants, principally copy number variants (CNVs). To identify common risk variation, the Autism Genome Project (AGP) Consortium genotyped 1558 rigorously defined ASD families for 1 million single-nucleotide polymorphisms (SNPs) and analyzed these SNP genotypes for association with ASD. In one of four primary association analyses, the association signal for marker rs4141463, located within MACROD2, crossed the genome-wide association significance threshold of P < 5 × 10(-8). When a smaller replication sample was analyzed, the risk allele at rs4141463 was again over-transmitted; yet, consistent with the winner's curse, its effect size in the replication sample was much smaller; and, for the combined samples, the association signal barely fell below the P < 5 × 10(-8) threshold. Exploratory analyses of phenotypic subtypes yielded no significant associations after correction for multiple testing. They did, however, yield strong signals within several genes, KIAA0564, PLD5, POU6F2, ST8SIA2 and TAF1C.

Published
2010
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7. Functional impact of global rare copy number variation in autism spectrum disorders.

Author

Pinto D, Pagnamenta AT, Klei L, Anney R, Merico D, Regan R, Conroy J, Magalhaes TR, Correia C, Abrahams BS, Almeida J, Bacchelli E, Bader GD, Bailey AJ, Baird G, Battaglia A, Berney T, Bolshakova N, Bölte S, Bolton PF, Bourgeron T, Brennan S, Brian J, Bryson SE, Carson AR, Casallo G, Casey J, Chung BH, Cochrane L, Corsello C, Crawford EL, Crossett A, Cytrynbaum C, Dawson G, de Jonge M, Delorme R, Drmic I, Duketis E, Duque F, Estes A, Farrar P, Fernandez BA, Folstein SE, Fombonne E, Freitag CM, Gilbert J, Gillberg C, Glessner JT, Goldberg J, Green A, Green J, Guter SJ, Hakonarson H, Heron EA, Hill M, Holt R, Howe JL, Hughes G, Hus V, Igliozzi R, Kim C, Klauck SM, Kolevzon A, Korvatska O, Kustanovich V, Lajonchere CM, Lamb JA, Laskawiec M, Leboyer M, Le Couteur A, Leventhal BL, Lionel AC, Liu XQ, Lord C, Lotspeich L, Lund SC, Maestrini E, Mahoney W, Mantoulan C, Marshall CR, McConachie H, McDougle CJ, McGrath J, McMahon WM, Merikangas A, Migita O, Minshew NJ, Mirza GK, Munson J, Nelson SF, Noakes C, Noor A, Nygren G, Oliveira G, Papanikolaou K, Parr JR, Parrini B, Paton T, Pickles A, Pilorge M, Piven J, Ponting CP, Posey DJ, Poustka A, Poustka F, Prasad A, Ragoussis J, Renshaw K, Rickaby J, Roberts W, Roeder K, Roge B, Rutter ML, Bierut LJ, Rice JP, Salt J, Sansom K, Sato D, Segurado R, Sequeira AF, Senman L, Shah N, Sheffield VC, Soorya L, Sousa I, Stein O, Sykes N, Stoppioni V, Strawbridge C, Tancredi R, Tansey K, Thiruvahindrapduram B, Thompson AP, Thomson S, Tryfon A, Tsiantis J, Van Engeland H, Vincent JB, Volkmar F, Wallace S, Wang K, Wang Z, Wassink TH, Webber C, Weksberg R, Wing K, Wittemeyer K, Wood S, Wu J, Yaspan BL, Zurawiecki D, Zwaigenbaum L, Buxbaum JD, Cantor RM, Cook EH, Coon H, Cuccaro ML, Devlin B, Ennis S, Gallagher L, Geschwind DH, Gill M, Haines JL, Hallmayer J, Miller J, Monaco AP, Nurnberger JI Jr, Paterson AD, Pericak-Vance MA, Schellenberg GD, Szatmari P, Vicente AM, Vieland VJ, Wijsman EM, Scherer SW, Sutcliffe JS, and Betancur C

Subjects
Case-Control Studies, Cell Movement, Child, Child Development Disorders, Pervasive pathology, Cytoprotection, Europe ethnology, Genome-Wide Association Study, Humans, Signal Transduction, Social Behavior, Child Development Disorders, Pervasive genetics, Child Development Disorders, Pervasive physiopathology, DNA Copy Number Variations genetics, Gene Dosage genetics, Genetic Predisposition to Disease genetics
Abstract

The autism spectrum disorders (ASDs) are a group of conditions characterized by impairments in reciprocal social interaction and communication, and the presence of restricted and repetitive behaviours. Individuals with an ASD vary greatly in cognitive development, which can range from above average to intellectual disability. Although ASDs are known to be highly heritable ( approximately 90%), the underlying genetic determinants are still largely unknown. Here we analysed the genome-wide characteristics of rare (<1% frequency) copy number variation in ASD using dense genotyping arrays. When comparing 996 ASD individuals of European ancestry to 1,287 matched controls, cases were found to carry a higher global burden of rare, genic copy number variants (CNVs) (1.19 fold, P = 0.012), especially so for loci previously implicated in either ASD and/or intellectual disability (1.69 fold, P = 3.4 x 10(-4)). Among the CNVs there were numerous de novo and inherited events, sometimes in combination in a given family, implicating many novel ASD genes such as SHANK2, SYNGAP1, DLGAP2 and the X-linked DDX53-PTCHD1 locus. We also discovered an enrichment of CNVs disrupting functional gene sets involved in cellular proliferation, projection and motility, and GTPase/Ras signalling. Our results reveal many new genetic and functional targets in ASD that may lead to final connected pathways.

Published
2010
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8. Copy number variation and association analysis of SHANK3 as a candidate gene for autism in the IMGSAC collection.

Author

Sykes NH, Toma C, Wilson N, Volpi EV, Sousa I, Pagnamenta AT, Tancredi R, Battaglia A, Maestrini E, Bailey AJ, and Monaco AP

Subjects
Carrier Proteins, Chromosome Aberrations, Cohort Studies, Disease Progression, Female, Genetic Variation, Genotype, Humans, In Situ Hybridization, Fluorescence, Italy, Male, Models, Genetic, Nerve Tissue Proteins, Synapses genetics, Autistic Disorder genetics, Genetic Predisposition to Disease
Abstract

SHANK3 is located on chromosome 22q13.3 and encodes a scaffold protein that is found in excitatory synapses opposite the pre-synaptic active zone. SHANK3 is a binding partner of neuroligins, some of whose genes contain mutations in a small subset of individuals with autism. In individuals with autism spectrum disorders (ASDs), several studies have found SHANK3 to be disrupted by deletions ranging from hundreds of kilobases to megabases, suggesting that 1% of individuals with ASDs may have these chromosomal aberrations. To further analyse the involvement of SHANK3 in ASD, we screened the International Molecular Genetic Study of Autism Consortium (IMGSAC) multiplex family sample, 330 families, for SNP association and copy number variants (CNVs) in SHANK3. A collection of 76 IMGSAC Italian probands from singleton families was also examined by multiplex ligation-dependent probe amplification for CNVs. No CNVs or SNP associations were found within the sample set, although sequencing of the gene was not performed. Our data suggest that SHANK3 deletions may be limited to lower functioning individuals with autism.

Published
2009
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9. MET and autism susceptibility: family and case-control studies.

Author

Sousa I, Clark TG, Toma C, Kobayashi K, Choma M, Holt R, Sykes NH, Lamb JA, Bailey AJ, Battaglia A, Maestrini E, and Monaco AP

Subjects
Case-Control Studies, Genotype, Haplotypes, Humans, Polymorphism, Single Nucleotide, Proto-Oncogene Proteins c-met, Autistic Disorder genetics, Genetic Predisposition to Disease genetics, Proto-Oncogene Proteins genetics, Receptors, Growth Factor genetics
Abstract

Autism is a common, severe and highly heritable neurodevelopmental disorder. The International Molecular Genetic Study of Autism Consortium (IMGSAC) genome screen for linkage in affected sib-pair families identified a chromosome 7q susceptibility locus (AUTS1), that has subsequently shown evidence of increased sharing in several independent multiplex samples and in two meta-analyses. Taking into account the location of the MET gene under this linkage peak, and the fact that it has recently been reported to be associated with autism, the gene was further analyzed as a promising autism candidate. The gene encodes a transmembrane receptor tyrosine kinase of the hepatocyte growth factor/scatter factor (HGF/SF). MET is best known as an oncogene, but its signalling also participates in immune function, peripheral organ development and repair, and the development of the cerebral cortex and cerebellum (all of which have been observed earlier as being disregulated in individuals with autism). Here we present a family-based association analysis covering the entire MET locus. Significant results were obtained in both single locus and haplotype approaches with a single nucleotide polymorphism in intron 1 (rs38845, P<0.004) and with one intronic haplotype (AAGTG, P<0.009) in 325 multiplex IMGSAC families and 10 IMGSAC trios. Although these results failed to replicate in an independent sample of 82 Italian trios, the association itself was confirmed by a case-control analysis performed using the Italian cohort (P<0.02). The previously reported positive association of rs1858830 failed to replicate in this study. Overall, our findings provide further evidence that MET may play a role in autism susceptibility.

Published
2009
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10. Is ASMT a susceptibility gene for autism spectrum disorders? A replication study in European populations.

Author

Toma C, Rossi M, Sousa I, Blasi F, Bacchelli E, Alen R, Vanhala R, Monaco AP, Järvelä I, and Maestrini E

Subjects
Autistic Disorder epidemiology, DNA Mutational Analysis, Europe epidemiology, Family Health, Humans, Polymorphism, Single Nucleotide genetics, Acetylserotonin O-Methyltransferase genetics, Autistic Disorder genetics, Genetic Predisposition to Disease
Published
2007
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11. Mapping autism risk loci using genetic linkage and chromosomal rearrangements.

Author

Szatmari P, Paterson AD, Zwaigenbaum L, Roberts W, Brian J, Liu XQ, Vincent JB, Skaug JL, Thompson AP, Senman L, Feuk L, Qian C, Bryson SE, Jones MB, Marshall CR, Scherer SW, Vieland VJ, Bartlett C, Mangin LV, Goedken R, Segre A, Pericak-Vance MA, Cuccaro ML, Gilbert JR, Wright HH, Abramson RK, Betancur C, Bourgeron T, Gillberg C, Leboyer M, Buxbaum JD, Davis KL, Hollander E, Silverman JM, Hallmayer J, Lotspeich L, Sutcliffe JS, Haines JL, Folstein SE, Piven J, Wassink TH, Sheffield V, Geschwind DH, Bucan M, Brown WT, Cantor RM, Constantino JN, Gilliam TC, Herbert M, Lajonchere C, Ledbetter DH, Lese-Martin C, Miller J, Nelson S, Samango-Sprouse CA, Spence S, State M, Tanzi RE, Coon H, Dawson G, Devlin B, Estes A, Flodman P, Klei L, McMahon WM, Minshew N, Munson J, Korvatska E, Rodier PM, Schellenberg GD, Smith M, Spence MA, Stodgell C, Tepper PG, Wijsman EM, Yu CE, Rogé B, Mantoulan C, Wittemeyer K, Poustka A, Felder B, Klauck SM, Schuster C, Poustka F, Bölte S, Feineis-Matthews S, Herbrecht E, Schmötzer G, Tsiantis J, Papanikolaou K, Maestrini E, Bacchelli E, Blasi F, Carone S, Toma C, Van Engeland H, de Jonge M, Kemner C, Koop F, Langemeijer M, Hijmans C, Staal WG, Baird G, Bolton PF, Rutter ML, Weisblatt E, Green J, Aldred C, Wilkinson JA, Pickles A, Le Couteur A, Berney T, McConachie H, Bailey AJ, Francis K, Honeyman G, Hutchinson A, Parr JR, Wallace S, Monaco AP, Barnby G, Kobayashi K, Lamb JA, Sousa I, Sykes N, Cook EH, Guter SJ, Leventhal BL, Salt J, Lord C, Corsello C, Hus V, Weeks DE, Volkmar F, Tauber M, Fombonne E, Shih A, and Meyer KJ

Subjects
Autistic Disorder diagnosis, Family, Female, Genetic Variation, Humans, Lod Score, Male, Risk Factors, Autistic Disorder genetics, Chromosome Aberrations, Chromosome Mapping, Genetic Linkage, Genetic Predisposition to Disease, Genetic Testing methods
Abstract

Autism spectrum disorders (ASDs) are common, heritable neurodevelopmental conditions. The genetic architecture of ASDs is complex, requiring large samples to overcome heterogeneity. Here we broaden coverage and sample size relative to other studies of ASDs by using Affymetrix 10K SNP arrays and 1,181 [corrected] families with at least two affected individuals, performing the largest linkage scan to date while also analyzing copy number variation in these families. Linkage and copy number variation analyses implicate chromosome 11p12-p13 and neurexins, respectively, among other candidate loci. Neurexins team with previously implicated neuroligins for glutamatergic synaptogenesis, highlighting glutamate-related genes as promising candidates for contributing to ASDs.

Published
2007
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12. High-density SNP association study and copy number variation analysis of the AUTS1 and AUTS5 loci implicate the IMMP2L–DOCK4 gene region in autism susceptibility

Author

O Korvatska, Alistair T. Pagnamenta, Claudio Toma, Fiorella Minopoli, Jennifer Reichert, Joseph D. Buxbaum, Janine A. Lamb, H Butler, A de Bildt, Geraldine Dawson, Laura Winchester, Anthony J. Bailey, Gabrielle Barnby, Elena Bacchelli, Inês Sousa, Nuala Sykes, Elena Maestrini, Erik J. Mulder, Thomas S. Scerri, Guiqing Cai, Gerard D. Schellenberg, Andrew P. Morris, Ruud B. Minderaa, Anthony P. Monaco, Maestrini E, Pagnamenta AT, Lamb JA, Bacchelli E, Sykes NH, Sousa I, Toma C, Barnby G, Butler H, Winchester L, Scerri TS, Minopoli F, Reichert J, Cai G, Buxbaum JD, Korvatska O, Schellenberg GD, Dawson G, Bildt AD, Minderaa RB, Mulder EJ, Morris AP, Bailey AJ, and Monaco AP.

Subjects
Adult, Male, Linkage disequilibrium, Candidate gene, Genotype, MULTILOCUS GENOTYPE DATA, Gene Dosage, Single-nucleotide polymorphism, SPECTRUM DISORDERS, Biology, Polymorphism, Single Nucleotide, CANDIDATE GENES, single nucleotide polymorphisms, 03 medical and health sciences, Cellular and Molecular Neuroscience, 0302 clinical medicine, Endopeptidases, chromosome 7, Humans, Genetic Predisposition to Disease, Heritability of autism, Copy-number variation, Child, chromosome 2, Molecular Biology, 030304 developmental biology, Genetic association, Genetics, 0303 health sciences, MUTATIONS, GTPase-Activating Proteins, Haplotype, LINKAGE ANALYSES, Genetic Variation, LINKED MENTAL-RETARDATION, PERVASIVE DEVELOPMENTAL DISORDERS, disease susceptibility, Tag SNP, GENOME, Psychiatry and Mental health, Chromosomes, Human, Pair 2, CHROMOSOME 7Q, Original Article, Female, autistic disorder, Chromosomes, Human, Pair 7, linkage disequilibrium, ARRAY-CGH, 030217 neurology & neurosurgery
Abstract

Autism spectrum disorders are a group of highly heritable neurodevelopmental disorders with a complex genetic etiology. The International Molecular Genetic Study of Autism Consortium previously identified linkage loci on chromosomes 7 and 2, termed AUTS1 and AUTS5, respectively. In this study, we performed a high-density association analysis in AUTS1 and AUTS5, testing more than 3000 single nucleotide polymorphisms (SNPs) in all known genes in each region, as well as SNPs in non-genic highly conserved sequences. SNP genotype data were also used to investigate copy number variation within these regions. The study sample consisted of 127 and 126 families, showing linkage to the AUTS1 and AUTS5 regions, respectively, and 188 gender-matched controls. Further investigation of the strongest association results was conducted in an independent European family sample containing 390 affected individuals. Association and copy number variant analysis highlighted several genes that warrant further investigation, including IMMP2L and DOCK4 on chromosome 7. Evidence for the involvement of DOCK4 in autism susceptibility was supported by independent replication of association at rs2217262 and the finding of a deletion segregating in a sib-pair family. Molecular Psychiatry (2010) 15, 954-968; doi:10.1038/mp.2009.34; published online 28 April 2009

Published
2009

13. Individual common variants exert weak effects on the risk for autism spectrum disorderspi

Author

Naisha Shah, William M. McMahon, Barbara Parrini, Jeremy R. Parr, Thomas Bourgeron, Vanessa Hus, Gudrun Nygren, Sabine M. Klauck, John B. Vincent, Nadine M. Melhem, Jillian P. Casey, Christina Corsello, Jonathan L. Haines, Andrew D. Paterson, Raffaella Tancredi, Alistair T. Pagnamenta, Jonathan Green, Richard Delorme, Geraldine Dawson, Andrew Pickles, Carine Mantoulan, Alexander Kolevzon, Bridget A. Fernandez, Frederico Duque, Inês Sousa, Tara Paton, Kathryn Roeder, Joana Almeida, Richard Anney, Margaret A. Pericak-Vance, Joachim Hallmayer, Gerard D. Schellenberg, Sabata C. Lund, Rita M. Cantor, Daniel H. Geschwind, Janine A. Lamb, Annette Estes, Sven Bölte, Hakon Hakonarson, Gillian Hughes, Gillian Baird, John I. Nurnberger, Jessica Brian, Bernie Devlin, Roberta Igliozzi, Vera Stoppioni, Jiannis Ragoussis, Peter Szatmari, Ghazala Mirza, Eric Fombonne, Thomas H. Wassink, Emily L. Crawford, Nuala Sykes, Danielle Zurawiecki, Graham Kenny, David J. Posey, Elena Maestrini, Vlad Kustanovich, Elena Bacchelli, Veronica J. Vieland, Stephen W. Scherer, Guiomar Oliveira, Simon Wallace, John R. Gilbert, Latha Soorya, Sean Brennan, Tiago R. Magalhaes, Hilary Coon, Elizabeth A. Heron, Sabine Schlitt, Fritz Poustka, Astrid M. Vicente, Patrick Bolton, Linda Lotspeich, Nancy J. Minshew, Val C. Sheffield, Bennett L. Leventhal, Xiao-Qing Liu, Andrew Green, Joseph D. Buxbaum, Shawn Wood, Susan E. Folstein, Sean Ennis, Catarina Correia, James S. Sutcliffe, Carolyn Noakes, Ann Le Couteur, Marion Leboyer, Ann P. Thompson, Christine M. Freitag, Fred R. Volkmar, Katerina Papanikolaou, Dalila Pinto, Agatino Battaglia, Frances Lombard, Joseph Piven, Maretha de Jonge, Michael Rutter, Clara Lajonchere, Kerstin Wittemeyer, Herman van Engeland, Michael L. Cuccaro, Richard Holt, Lonnie Zwaigenbaum, Louise Gallagher, Jeff Munson, Ana Tryfon, John Tsiantis, Lambertus Klei, Christopher Gillberg, Penny Farrar, Joseph T. Glessner, Ellen M. Wijsman, Anthony P. Monaco, Wendy Roberts, Nadia Bolshakova, Cecilia Kim, Judith Miller, Stephen J. Guter, Susanne Thomson, Catherine Lord, Anthony J. Bailey, Miriam Law-Smith, Michael Gill, Christopher J. McDougle, Bernadette Rogé, Alison K. Merikangas, Jacob A. S. Vorstman, Suma Jacob, Judith Conroy, Kirsty Wing, Regina Regan, Jennifer L. Howe, Stanley F. Nelson, Edwin H. Cook, Catalina Betancur, Eftichia Duketis, Division of Mental Health and Addiction, Oslo University Hospital [Oslo], Department of Psychiatry [Pittsburgh], University of Pittsburgh School of Medicine, Pennsylvania Commonwealth System of Higher Education (PCSHE)-Pennsylvania Commonwealth System of Higher Education (PCSHE), The Centre for Applied Genomics, Toronto, University of Toronto-The Hospital for sick children [Toronto] (SickKids)-Department of Molecular Genetics-McLaughlin Centre, Unidade de Neurodesenvolvimento e Autismo (UNDA), Hospital Pediatrico de Coimbra, Department of Pharmacy and Biotechnology, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Newcomen Centre, Guy's Hospital [London], Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Goethe-Universität Frankfurt am Main, Department of Child and Adolescent Psychiatry, Institute of psychiatry, Molecular and Cellular Neurobiology, Autism Research Unit, The Hospital for sick children [Toronto] (SickKids)-University of Toronto, Academic Centre on Rare Diseases (ACoRD), University College Dublin [Dublin] (UCD), Instituto Nacional de Saùde Dr Ricardo Jorge [Portugal] (INSA), BioFIG, Center for Biodiversity, Functional and Integrative Genomics, Autism and Communicative Disorders Centre, University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Department of Molecular Physiology & Biophysics and Psychiatry, Vanderbilt University [Nashville]-Centers for Human Genetics Research and Molecular Neuroscience, Vanderbilt Brain Institute, Vanderbilt University School of Medicine [Nashville], Department of Psychiatry, University Medical Center [Utrecht]-Brain Center Rudolf Magnus, Service de psychopathologie de l'enfant et de l'adolescent, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7), Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Department of Speech and Hearing Sciences [Washington], University of Washington [Seattle], The Wellcome Trust Centre for Human Genetics [Oxford], University of Oxford [Oxford], Disciplines of Genetics and Medicine, Memorial University of Newfoundland [St. John's], University of Miami School of Medicine, John P. Hussman Institute for Human Genomics, University of Miami [Coral Gables], Research Unit on Children's Psychosocial Maladjustment, Université Laval [Québec] (ULaval)-Department of Psychology, University of Gothenburg (GU), The Center for Applied Genomics, Children’s Hospital of Philadelphia (CHOP ), Manchester Academic Health Sciences Centre, Department of Disability and Human Development, University of Illinois [Chicago] (UIC), University of Illinois System-University of Illinois System, Program in Genetics and Genomic Biology, Hospital for Sick Children-University of Toronto McLaughlin Centre, Department of Psychiatry and Behavioral Sciences [Stanford], Stanford Medicine, Stanford University-Stanford University, Human Genetics Center, The University of Texas Health Science Center at Houston (UTHealth), Autism Genetic Resource Exchange, Autism Speaks, Centre for Integrated Genomic Medical Research, Manchester, University of Manchester [Manchester], Service de psychiatrie, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor-Hôpital Albert Chenevier, European Network of Bipolar Research Expert Centres (ENBREC), ENBREC, Newcastle University [Newcastle]-Institute of Health & Society (Child & Adolescent Psychiatry), New York University [New York] (NYU), NYU System (NYU)-NYU System (NYU), Centre de Référence du Syndrome de Prader-Willi, CHU Toulouse [Toulouse], Indiana University School of Medicine, Indiana University System-Indiana University System, Department of Psychiatry and Behavioral Sciences, University Department of Child Psychiatry, National and Kapodistrian University of Athens (NKUA), Department of Medicine, Manchester, University of Manchester [Manchester]-School of Epidemiology and Health Science, Department of Statistics, Carnegie Mellon University [Pittsburgh] (CMU), Octogone Unité de Recherche Interdisciplinaire (Octogone), Université Toulouse - Jean Jaurès (UT2J), Social, Genetic and Developmental Psychiatry Centre, Department of Pediatrics, University of Iowa [Iowa City]-Howard Hughes Medical-Institute Carver College of Medicine, Neuropsichiatria Infantile, Ospedale Santa Croce, Department of Psychiatry and Behavioural Neurosciences, McMaster University [Hamilton, Ontario]-Offord Centre for Child Studies, University of Toronto, Child Study Centre, Yale University School of Medicine, University of Oxford [Oxford]-Warneford Hospital, University of Alberta, MRC Social, Genetic and Developmental Psychiatry Centre (SGDP), The Institute of Psychiatry-King‘s College London, Department of Human Genetics, Los Angeles, David Geffen School of Medicine [Los Angeles], University of California [Los Angeles] (UCLA), University of California-University of California-University of California [Los Angeles] (UCLA), University of California-University of California, Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris [Pisa], Autism Speaks and the Department of Psychiatry, University of North Carolina [Chapel Hill] (UNC), University of North Carolina System (UNC)-University of North Carolina System (UNC), Department of Neurology, University of California-University of California-David Geffen School of Medicine [Los Angeles], Division of Molecular Genome Analysis, German Cancer Research Center - Deutsches Krebsforschungszentrum [Heidelberg] (DKFZ), Institutes of Neuroscience and Health and Society, Newcastle University [Newcastle], Carolina Institute for Developmental Disabilities, Pathology and Laboratory Medicine, University of Pennsylvania [Philadelphia], Carver College of Medicine [Iowa City], University of Iowa [Iowa City]-University of Iowa [Iowa City], Departments of Biostatistics and Medicine, Physiopathologie des Maladies du Système Nerveux Central, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Stanford School of Medicine [Stanford], Battelle Center for Mathematical Medicine, Ohio State University [Columbus] (OSU)-Nationwide Children's Hospital, Children’s Hospital of Philadelphia (CHOP )-Perelman School of Medicine, University of Pennsylvania [Philadelphia]-University of Pennsylvania [Philadelphia], The Hospital for sick children [Toronto] (SickKids)-University of Toronto-Department of Molecular Genetics-McLaughlin Centre, Memorial University of Newfoundland = Université Memorial de Terre-Neuve [St. John's, Canada] (MUN), Yale School of Medicine [New Haven, Connecticut] (YSM), King‘s College London-The Institute of Psychiatry, University of California (UC)-University of California (UC)-University of California [Los Angeles] (UCLA), University of California (UC)-University of California (UC), University of California (UC)-University of California (UC)-David Geffen School of Medicine [Los Angeles], Perelman School of Medicine, University of Pennsylvania [Philadelphia]-University of Pennsylvania [Philadelphia]-Children’s Hospital of Philadelphia (CHOP ), Anney R, Klei L, Pinto D, Almeida J, Bacchelli E, Baird G, Bolshakova N, Bölte S, Bolton PF, Bourgeron T, Brennan S, Brian J, Casey J, Conroy J, Correia C, Corsello C, Crawford EL, de Jonge M, Delorme R, Duketis E, Duque F, Estes A, Farrar P, Fernandez BA, Folstein SE, Fombonne E, Gilbert J, Gillberg C, Glessner JT, Green A, Green J, Guter SJ, Heron EA, Holt R, Howe JL, Hughes G, Hus V, Igliozzi R, Jacob S, Kenny GP, Kim C, Kolevzon A, Kustanovich V, Lajonchere CM, Lamb JA, Law-Smith M, Leboyer M, Le Couteur A, Leventhal BL, Liu XQ, Lombard F, Lord C, Lotspeich L, Lund SC, Magalhaes TR, Mantoulan C, McDougle CJ, Melhem NM, Merikangas A, Minshew NJ, Mirza GK, Munson J, Noakes C, Nygren G, Papanikolaou K, Pagnamenta AT, Parrini B, Paton T, Pickles A, Posey DJ, Poustka F, Ragoussis J, Regan R, Roberts W, Roeder K, Roge B, Rutter ML, Schlitt S, Shah N, Sheffield VC, Soorya L, Sousa I, Stoppioni V, Sykes N, Tancredi R, Thompson AP, Thomson S, Tryfon A, Tsiantis J, Van Engeland H, Vincent JB, Volkmar F, Vorstman J, Wallace S, Wing K, Wittemeyer K, Wood S, Zurawiecki D, Zwaigenbaum L, Bailey AJ, Battaglia A, Cantor RM, Coon H, Cuccaro ML, Dawson G, Ennis S, Freitag CM, Geschwind DH, Haines JL, Klauck SM, McMahon WM, Maestrini E, Miller J, Monaco AP, Nelson SF, Nurnberger JI Jr, Oliveira G, Parr JR, Pericak-Vance MA, Piven J, Schellenberg GD, Scherer SW, Vicente AM, Wassink TH, Wijsman EM, Betancur C, Buxbaum JD, Cook EH, Gallagher L, Gill M, Hallmayer J, Paterson AD, Sutcliffe JS, Szatmari P, Vieland VJ, Hakonarson H, Devlin B, University of Oxford, Pôle Enfants [CHU Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), University of Oxford-Warneford Hospital, University of Pennsylvania, University of Pennsylvania-University of Pennsylvania-Children’s Hospital of Philadelphia (CHOP ), Betancur, Catalina, and Université de Toulouse (UT)-Université de Toulouse (UT)

Subjects
Male, CNTNAP2, Genotype, Genome-wide association study, Single-nucleotide polymorphism, Nerve Tissue Proteins, [SDV.GEN] Life Sciences [q-bio]/Genetics, Biology, Language Development, Polymorphism, Single Nucleotide, 03 medical and health sciences, 0302 clinical medicine, autism spectrum disorders (ASDs), Gene Frequency, Risk Factors, mental disorders, Genetics, medicine, Humans, Genetic Predisposition to Disease, Copy-number variation, Allele, GENOME-WIDE ASSOCIATION, Child, Molecular Biology, Allele frequency, Genetics (clinical), Alleles, 030304 developmental biology, 0303 health sciences, [SDV.GEN]Life Sciences [q-bio]/Genetics, Association Studies Articles, Membrane Proteins, General Medicine, medicine.disease, Genetic architecture, Child Development Disorders, Pervasive, common variant, Perturbações do Desenvolvimento Infantil e Saúde Mental, Autism, Female, 030217 neurology & neurosurgery, Genome-Wide Association Study
Abstract

International audience; While it is apparent that rare variation can play an important role in the genetic architecture of autism spectrum disorders (ASDs), the contribution of common variation to the risk of developing ASD is less clear. To produce a more comprehensive picture, we report Stage 2 of the Autism Genome Project genome-wide association study, adding 1301 ASD families and bringing the total to 2705 families analysed (Stages 1 and 2). In addition to evaluating the association of individual single nucleotide polymorphisms (SNPs), we also sought evidence that common variants, en masse, might affect the risk. Despite genotyping over a million SNPs covering the genome, no single SNP shows significant association with ASD or selected phenotypes at a genome-wide level. The SNP that achieves the smallest P-value from secondary analyses is rs1718101. It falls in CNTNAP2, a gene previously implicated in susceptibility for ASD. This SNP also shows modest association with age of word/phrase acquisition in ASD subjects, of interest because features of language development are also associated with other variation in CNTNAP2. In contrast, allele scores derived from the transmission of common alleles to Stage 1 cases significantly predict case status in the independent Stage 2 sample. Despite being significant, the variance explained by these allele scores was small (Vm< 1%). Based on results from individual SNPs and their en masse effect on risk, as inferred from the allele score results, it is reasonable to conclude that common variants affect the risk for ASD but their individual effects are modest.

Published
2012

14. A genome-wide scan for common alleles affecting risk for autism

Author

Veronica J. Vieland, Stephen W. Scherer, Elizabeth A. Heron, Barbara Parrini, Jeremy R. Parr, Louise Gallagher, Jeff Munson, Annemarie Poustka, Susan E. Folstein, Irene Drmic, Gudrun Nygren, John P. Rice, Jeff Salt, Simon Wallace, Geraldine Dawson, Daniel H. Geschwind, Annette Estes, Sean Brennan, Alistair T. Pagnamenta, Nancy J. Minshew, Christina Corsello, Jonathan Green, William M. McMahon, Christopher Gillberg, Kathryn Roeder, Lambertus Klei, Anath C. Lionel, Bridget A. Fernandez, Thomas Bourgeron, Ellen M. Wijsman, Gerard D. Schellenberg, Wendy Roberts, Jeremy Goldberg, Frederico Duque, Ghazala Mirza, Sean Ennis, Joana Almeida, Nadine M. Melhem, Jillian P. Casey, Roberta Igliozzi, Ricardo Segurado, Carine Mantoulan, Katy Renshaw, Kai Wang, Andrew D. Paterson, Raffaella Tancredi, Matthew Nicholas Hill, Richard Anney, Christian R. Marshall, Anthony P. Monaco, Linda Lotspeich, Marion Leboyer, Richard Holt, Andrew Pickles, Vlad Kustanovich, William M. Mahoney, Jessica Brian, Inês Sousa, Peter Szatmari, Vanessa Hus, Janine A. Lamb, Hakon Hakonarson, Lonnie Zwaigenbaum, John Tsiantis, David J. Posey, Olena Korvatska, Guillermo Casallo, Rita M. Cantor, Bhooma Thiruvahindrapduram, Nadia Bolshakova, Sven Bölte, Alison K. Merikangas, Brian L. Yaspan, Cecilia Kim, Andrew Crossett, Fritz Poustka, Danielle Zurawiecki, Agatino Battaglia, Sabata C. Lund, Ann P. Thompson, Bennett L. Leventhal, Jessica Rickaby, Zhouzhi Wang, John I. Nurnberger, Astrid M. Vicente, Maretha de Jonge, Tiago R. Magalhaes, Michael L. Cuccaro, Val C. Sheffield, Nuala Sykes, Elena Maestrini, Guiomar Oliveira, Joseph D. Buxbaum, Fred R. Volkmar, Shawn Wood, Magdalena Laskawiec, Katherine Sansom, Herman van Engeland, Jane McGrath, Thomas H. Wassink, Su H. Chu, Elena Bacchelli, Carolyn Noakes, Ann Le Couteur, Catarina Correia, Ohsuke Migita, Bernie Devlin, Hilary Coon, Gillian Baird, Joseph Piven, Tom Berney, Ana Tryfon, Abdul Noor, Patrick Bolton, Latha Soorya, Vera Stoppioni, Stephen J. Guter, Joseph T. Glessner, Michael Gill, Christopher J. McDougle, Anthony J. Bailey, Margaret A. Pericak-Vance, Joachim Hallmayer, Christine M. Freitag, Penny Farrar, Kirsty Wing, Katherine E. Tansey, Bernadette Rogé, Michael Rutter, Christina Strawbridge, Brett S. Abrahams, Kerstin Wittemeyer, Laura J. Bierut, Tara Paton, Emily L. Crawford, Jonathan L. Haines, Alexander Kolevzon, Gillian Hughes, Lili Senman, James S. Sutcliffe, John B. Gilbert, Katerina Papanikolaou, Andrew R. Carson, Lynne E Cochrane, Regina Regan, Judith Miller, Susanne Thomson, Helen McConachie, Daisuke Sato, Richard Delorme, Jiannis Ragoussis, Eric Fombonne, Clara Lajonchere, Judith Conroy, Dalila Pinto, Aparna Prasad, Naisha Shah, Stanley F. Nelson, Sabine M. Klauck, Catalina Betancur, John B. Vincent, Eftichia Duketis, Jennifer L. Howe, Edwin H. Cook, Xiao-Qing Liu, Catherine Lord, Division of Mental Health and Addiction, Oslo University Hospital [Oslo], Department of Psychiatry [Pittsburgh], University of Pittsburgh School of Medicine, Pennsylvania Commonwealth System of Higher Education (PCSHE)-Pennsylvania Commonwealth System of Higher Education (PCSHE), Program in Genetics and Genomic Biology, Hospital for Sick Children-University of Toronto McLaughlin Centre, Academic Centre on Rare Diseases (ACoRD), University College Dublin [Dublin] (UCD), Instituto Nacional de Saùde Dr Ricardo Jorge [Portugal] (INSA), BioFIG, Center for Biodiversity, Functional and Integrative Genomics, Department of Neurology, University of California [Los Angeles] (UCLA), University of California-University of California-David Geffen School of Medicine [Los Angeles], University of California-University of California, The Wellcome Trust Centre for Human Genetics [Oxford], University of Oxford [Oxford], Unidade de Neurodesenvolvimento e Autismo (UNDA), Hospital Pediatrico de Coimbra, Department of Pharmacy and Biotechnology, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Department of Psychiatry, University of Oxford [Oxford]-Warneford Hospital, Newcomen Centre, Guy's Hospital [London], Department of Psychiatry and Behavioral Sciences [Stanford], Stanford Medicine, Stanford University-Stanford University, Child and Adolescent Mental Health, Newcastle University [Newcastle], Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Goethe-Universität Frankfurt am Main, Department of Child and Adolescent Psychiatry, Institute of psychiatry, Génétique Humaine et Fonctions Cognitives, Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS), Autism Research Unit, University of Toronto-The Hospital for sick children [Toronto] (SickKids), Autism and Communicative Disorders Centre, University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Department of Molecular Physiology & Biophysics and Psychiatry, Vanderbilt University [Nashville]-Centers for Human Genetics Research and Molecular Neuroscience, Department of Statistics, Carnegie Mellon University [Pittsburgh] (CMU), Scientific Affairs, Autism Speaks, University of North Carolina [Chapel Hill] (UNC), University of North Carolina System (UNC)-University of North Carolina System (UNC), University Medical Center [Utrecht]-Brain Center Rudolf Magnus, Service de psychopathologie de l'enfant et de l'adolescent, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7), Department of Speech and Hearing Sciences [Washington], University of Washington [Seattle], Disciplines of Genetics and Medicine, Memorial University of Newfoundland [St. John's], John P. Hussman Institute for Human Genomics, University of Miami [Coral Gables], Department of Child Psychiatry, McGill University = Université McGill [Montréal, Canada]-Montreal Children's Hospital, McGill University Health Center [Montreal] (MUHC)-McGill University Health Center [Montreal] (MUHC), University of Gothenburg (GU), The Center for Applied Genomics, Children’s Hospital of Philadelphia (CHOP ), Department of Psychiatry and Behavioural Neurosciences, McMaster University [Hamilton, Ontario], Manchester Academic Health Sciences Centre, Institute for Juvenile Research-University of Illinois [Chicago] (UIC), University of Illinois System-University of Illinois System, Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania [Philadelphia]-University of Pennsylvania [Philadelphia]-Children’s Hospital of Philadelphia (CHOP ), Division of Molecular Genome Analysis, German Cancer Research Center - Deutsches Krebsforschungszentrum [Heidelberg] (DKFZ), Human Genetics Center, The University of Texas Health Science Center at Houston (UTHealth), Department of Medicine, Autism Genetic Resource Exchange, Centre for Integrated Genomic Medical Research, Manchester, University of Manchester [Manchester], Institut Universitaire d'Hématologie (IUH), Université Paris Diderot - Paris 7 (UPD7), Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Nathan Kline Institute for Psychiatric Research (NKI), Nathan Kline Institute for Psychiatric Research, New York University [New York] (NYU), NYU System (NYU)-NYU System (NYU)-NYU Child Study Center, Centre d'Etudes et de Recherches en PsychoPathologie, Université Toulouse - Jean Jaurès (UT2J), Indiana University School of Medicine, Indiana University System-Indiana University System, Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris [Pisa], Departments of Psychiatry and Neurology, Department of Psychiatry and Behavioral Sciences, Department of Human Genetics, Los Angeles, David Geffen School of Medicine [Los Angeles], University of California-University of California-University of California [Los Angeles] (UCLA), Centre for Addiction and Mental Health, Clarke Institute, University Department of Child Psychiatry, National and Kapodistrian University of Athens (NKUA), Institutes of Neuroscience and Health and Society, Department of Medicine, Manchester, University of Manchester [Manchester]-School of Epidemiology and Health Science, Carolina Institute for Developmental Disabilities, Social, Genetic and Developmental Psychiatry Centre, Washington University in Saint Louis (WUSTL), Howard Hughes Medical-Institute Carver College of Medicine-University of Iowa [Iowa City], Neuropsichiatria Infantile, Ospedale Santa Croce, Child Study Centre, Yale University School of Medicine, Carver College of Medicine [Iowa City], University of Iowa [Iowa City]-University of Iowa [Iowa City], University of Alberta, Physiopathologie des Maladies du Système Nerveux Central, Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC), Vanderbilt Brain Institute, Vanderbilt University School of Medicine [Nashville], Pathology and Laboratory Medicine, University of Pennsylvania [Philadelphia], Battelle Center for Mathematical Medicine, Ohio State University [Columbus] (OSU)-Nationwide Children's Hospital, Departments of Biostatistics and Medicine, This research was primarily supported by Autism Speaks (USA), the Health Research Board (HRB, Ireland), The Medical Research Council (MRC, UK), Genome Canada/Ontario Genomics Institute, and the Hilibrand Foundation (USA). Additional support for individual groups was provided by the US National Institutes of Health [HD055751, HD055782, HD055784, HD35465, MH52708, MH55284, MH057881, MH061009, MH06359, MH066673, MH077930, MH080647, MH081754, MH66766, NS026630, NS042165, NS049261], the Canadian Institutes for Health Research (CIHR), Assistance Publique-Hôpitaux de Paris (France), Autistica, Canada Foundation for Innovation/Ontario Innovation Trust, Deutsche Forschungsgemeinschaft (grant: Po 255/17-4) (Germany), EC Sixth FP AUTISM MOLGEN, Fundação Calouste Gulbenkian (Portugal), Fondation de France, Fondation FondaMental (France), Fondation Orange (France), Fondation pour la Recherche Médicale (France), Fundação para a Ciência e Tecnologia (Portugal), GlaxoSmithKline-CIHR Pathfinder Chair (Canada), the Hospital for Sick Children Foundation and University of Toronto (Canada), INSERM (France), Institut Pasteur (France), the Italian Ministry of Health [convention 181 of 19.10.2001], the John P Hussman Foundation (USA), McLaughlin Centre (Canada), Netherlands Organization for Scientific Research [Rubicon 825.06.031], Ontario Ministry of Research and Innovation (Canada), Royal Netherlands Academy of Arts and Sciences [TMF/DA/5801], the Seaver Foundation (USA), the Swedish Science Council, The Centre for Applied Genomics (Canada), the Utah Autism Foundation (USA) and the Wellcome Trust core award [075491/Z/04 UK]. Funding support for the Study of Addiction: Genetics and Environment (SAGE) was provided through the NIH Genes, Environment and Health Initiative [GEI] (U01 HG004422)., University of California (UC)-University of California (UC)-David Geffen School of Medicine [Los Angeles], University of California (UC)-University of California (UC), The Hospital for sick children [Toronto] (SickKids)-University of Toronto, Memorial University of Newfoundland = Université Memorial de Terre-Neuve [St. John's, Canada] (MUN), University of California (UC)-University of California (UC)-University of California [Los Angeles] (UCLA), University of Iowa [Iowa City]-Howard Hughes Medical-Institute Carver College of Medicine, Yale School of Medicine [New Haven, Connecticut] (YSM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), University of Oxford, University of Oxford-Warneford Hospital, Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS), University of Pennsylvania-University of Pennsylvania-Children’s Hospital of Philadelphia (CHOP ), Université de Toulouse (UT)-Université de Toulouse (UT), University of Pennsylvania, Betancur, Catalina, Anney R, Klei L, Pinto D, Regan R, Conroy J, Magalhaes TR, Correia C, Abrahams BS, Sykes N, Pagnamenta AT, Almeida J, Bacchelli E, Bailey AJ, Baird G, Battaglia A, Berney T, Bolshakova N, Bölte S, Bolton PF, Bourgeron T, Brennan S, Brian J, Carson AR, Casallo G, Casey J, Chu SH, Cochrane L, Corsello C, Crawford EL, Crossett A, Dawson G, de Jonge M, Delorme R, Drmic I, Duketis E, Duque F, Estes A, Farrar P, Fernandez BA, Folstein SE, Fombonne E, Freitag CM, Gilbert J, Gillberg C, Glessner JT, Goldberg J, Green J, Guter SJ, Hakonarson H, Heron EA, Hill M, Holt R, Howe JL, Hughes G, Hus V, Igliozzi R, Kim C, Klauck SM, Kolevzon A, Korvatska O, Kustanovich V, Lajonchere CM, Lamb JA, Laskawiec M, Leboyer M, Le Couteur A, Leventhal BL, Lionel AC, Liu XQ, Lord C, Lotspeich L, Lund SC, Maestrini E, Mahoney W, Mantoulan C, Marshall CR, McConachie H, McDougle CJ, McGrath J, McMahon WM, Melhem NM, Merikangas A, Migita O, Minshew NJ, Mirza GK, Munson J, Nelson SF, Noakes C, Noor A, Nygren G, Oliveira G, Papanikolaou K, Parr JR, Parrini B, Paton T, Pickles A, Piven J, Posey DJ, Poustka A, Poustka F, Prasad A, Ragoussis J, Renshaw K, Rickaby J, Roberts W, Roeder K, Roge B, Rutter ML, Bierut LJ, Rice JP, Salt J, Sansom K, Sato D, Segurado R, Senman L, Shah N, Sheffield VC, Soorya L, Sousa I, Stoppioni V, Strawbridge C, Tancredi R, Tansey K, Thiruvahindrapduram B, Thompson AP, Thomson S, Tryfon A, Tsiantis J, Van Engeland H, Vincent JB, Volkmar F, Wallace S, Wang K, Wang Z, Wassink TH, Wing K, Wittemeyer K, Wood S, Yaspan BL, Zurawiecki D, Zwaigenbaum L, Betancur C, Buxbaum JD, Cantor RM, Cook EH, Coon H, Cuccaro ML, Gallagher L, Geschwind DH, Gill M, Haines JL, Miller J, Monaco AP, Nurnberger JI Jr, Paterson AD, Pericak-Vance MA, Schellenberg GD, Scherer SW, Sutcliffe JS, Szatmari P, Vicente AM, Vieland VJ, Wijsman EM, Devlin B, Ennis S, and Hallmayer J.

Subjects
Genome-wide association study, [SDV.GEN] Life Sciences [q-bio]/Genetics, MESH: Genotype, 0302 clinical medicine, Risk Factors, MESH: Risk Factors, Databases, Genetic, Copy-number variation, MESH: Genetic Variation, Genetics (clinical), MESH: Databases, Genetic, Genetics, 0303 health sciences, education.field_of_study, MESH: Polymorphism, Single Nucleotide, Association Studies Articles, MESH: Genetic Predisposition to Disease, General Medicine, MESH: European Continental Ancestry Group, Autism spectrum disorders, MESH: DNA Copy Number Variations, Genotyping, DNA Copy Number Variations, Genotype, Population, MESH: Autistic Disorder, Single-nucleotide polymorphism, Biology, Polymorphism, Single Nucleotide, White People, 03 medical and health sciences, Genetic variation, Humans, Genetic Predisposition to Disease, ddc:610, Allele, Autistic Disorder, SNP association, education, Molecular Biology, Alleles, MESH: Genome, Human, 030304 developmental biology, [SDV.GEN]Life Sciences [q-bio]/Genetics, MESH: Humans, Genome, Human, MESH: Alleles, Haplotype, Genetic Variation, Genetic architecture, Perturbações do Desenvolvimento Infantil e Saúde Mental, MESH: Genome-Wide Association Study, 030217 neurology & neurosurgery, Genome-Wide Association Study
Abstract

Although autism spectrum disorders (ASDs) have a substantial genetic basis, most of the known genetic risk has been traced to rare variants, principally copy number variants (CNVs). To identify common risk variation, the Autism Genome Project (AGP) Consortium genotyped 1558 rigorously defined ASD families for 1 million single-nucleotide polymorphisms (SNPs) and analyzed these SNP genotypes for association with ASD. In one of four primary association analyses, the association signal for marker rs4141463, located within MACROD2, crossed the genome-wide association significance threshold of P < 5 × 10−8. When a smaller replication sample was analyzed, the risk allele at rs4141463 was again over-transmitted; yet, consistent with the winner's curse, its effect size in the replication sample was much smaller; and, for the combined samples, the association signal barely fell below the P < 5 × 10−8 threshold. Exploratory analyses of phenotypic subtypes yielded no significant associations after correction for multiple testing. They did, however, yield strong signals within several genes, KIAA0564, PLD5, POU6F2, ST8SIA2 and TAF1C. Author has checked copyright TS 14.06.13 The subscript characters from the abstract have not copied across properly. TS

Published
2010

15. Linkage and candidate gene studies of autism spectrum disorders in European populations

Author

Richard, Holt, Gabrielle, Barnby, Elena, Maestrini, Elena, Bacchelli, Denise, Brocklebank, Inês, Sousa, Erik J, Mulder, Katri, Kantojärvi, Irma, Järvelä, Sabine M, Klauck, Fritz, Poustka, Anthony J, Bailey, Anthony P, Monaco, Tero, Ylisaukko-oja, Holt R, Barnby G, Maestrini E, Bacchelli E, Brocklebank D, Sousa I, Mulder EJ, Kantojärvi K, Järvelä I, Klauck SM, Poustka F, Bailey AJ, Monaco AP, and EU Autism MOLGEN Consortium

Subjects
Candidate gene, Genetic Linkage, Population, Biology, Polymorphism, Single Nucleotide, Article, 03 medical and health sciences, 0302 clinical medicine, GRIK2 POLYMORPHISMS, INFANTILE-AUTISM, Genetic linkage, Genetics, Pervasive developmental disorder, medicine, SNP, Humans, Genetic Predisposition to Disease, Autistic Disorder, SUSCEPTIBILITY LOCUS, education, FAMILY-BASED ASSOCIATION, Genetics (clinical), Finland, 030304 developmental biology, Genetic association, Netherlands, 0303 health sciences, education.field_of_study, GENOMEWIDE SCREEN, IDENTIFICATION, COMPLEX TRAITS, association, candidate gene, PERVASIVE DEVELOPMENTAL DISORDERS, GLUTAMATE-RECEPTOR-6 GENE, medicine.disease, Developmental disorder, Europe, Reelin Protein, SEROTONIN TRANSPORTER, Autism, linkage, 030217 neurology & neurosurgery
Abstract

Over the past decade, research on the genetic variants underlying susceptibility to autism and autism spectrum disorders (ASDs) has focused on linkage and candidate gene studies. This research has implicated various chromosomal loci and genes. Candidate gene studies have proven to be particularly intractable, with many studies failing to replicate previously reported associations. In this paper, we investigate previously implicated genomic regions for a role in ASD susceptibility, using four cohorts of European ancestry. Initially, a 384 SNP Illumina GoldenGate array was used to examine linkage at six previously implicated loci. We identify linkage approaching genome-wide suggestive levels on chromosome 2 (rs2885116, MLOD=1.89). Association analysis showed significant associations in MKL2 with ASD (rs756472, P=4.31 x 10(-5)) and between SND1 and strict autism (rs1881084, P=7.76 x 10(-5)) in the Finnish and Northern Dutch populations, respectively. Subsequently, we used a second 384 SNP Illumina GoldenGate array to examine the association in seven candidate genes, and evidence for association was found in RELN (rs362780, P=0.00165). Further increasing the sample size strengthened the association with RELN (rs362780, P=0.001) and produced a second significant result in GRIK2 (rs2518261, P=0.008). Our results strengthen the case for a more detailed study of the role of RELN and GRIK2 in autism susceptibility, as well as identifying two new potential candidate genes, MKL2 and SND1. European Journal of Human Genetics (2010) 18, 1013-1019; doi:10.1038/ejhg.2010.69; published online 5 May 2010

Published
2010

16. MET and autism susceptibility: family and case-control studies

Author

Richard Holt, Inês Sousa, Maja K. Choma, Agatino Battaglia, Nuala Sykes, Elena Maestrini, Janine A. Lamb, Anthony P. Monaco, Kazuhiro Kobayashi, Claudio Toma, Taane G. Clark, Anthony J. Bailey, Sousa I, Clark TG, Toma C, Kobayashi K, Choma M, Holt R, Sykes NH, Lamb JA, Bailey AJ, Battaglia A, Maestrini E, Monaco AP., and Genetics, European Society of Human

Subjects
Linkage disequilibrium, Genotype, Autism, Locus (genetics), Single-nucleotide polymorphism, Biology, Medical sciences, Polymorphism, Single Nucleotide, Neurodevelopmental disorder, Proto-Oncogene Proteins, Genetics, medicine, Humans, Genetic Predisposition to Disease, Receptors, Growth Factor, Heritability of autism, Autistic Disorder, Genetics (clinical), Genetic association, Psychiatry, Genetics (medical sciences), Haplotype, News and Commentary, Proto-Oncogene Proteins c-met, medicine.disease, Haplotypes, Case-Control Studies
Abstract

Austism is a common, severe and highly heritable neurodevelopmental disorder. The International Molecular Genetic Study of Autism Consortium (IMGSAC) genome screen for linkage in affected sib-pair families identified a chromosome 7 q susceptibility locus (AUTS1), that has subsequently shown evidence of increased sharing in several independent multiplex samples and in two meta-anlyses. Taking into account the location of the MET gene under this linkage peak, and the fact that it has recently been reported to be associated with autism, the gene was further analyzed as a promising autism candidate. The gene encodes a transmembrane receptor tyrosine kinase of the hepatocyte growth factor/scatter factor (HGF/SF). MET is best known as an oncogene, but its signalling also participates in immune function, peripheral organ development and repair, and the development of the cerebral cortex and cerebellum (all of which have been observed earlier as being disregulated in individuals with autism). Here we present a family-based association analysis covering the entire MET locus. Significant results were obtained in both single locus and haplotype approaches with a single nucleotide polymorphism in intron 1 (rs38845, P < 0.004) and with one intronic haplotype (AAGTG, P < 0.009) in 325 multiplex IMGSAC families and 10 IMGSAC trios. Although these results failed to replicate in an independent sample of 82 Italian trios, the association itself was confirmed by a case-control analysis performed using the Italian cohort (P < 0.02). The previously reported positive association of rs1858830 failed to replicate in this study. Overall, our findings provide further evidence that MET may play a role in autism susceptibility.

Published
2009

17. Is ASMT a susceptibility gene for autism spectrum disorders? A replication study in European populations

Author

Ap Monaco, Inês Sousa, Elena Bacchelli, Elena Maestrini, Raija Vanhala, R Alen, Francesca Blasi, Mari Rossi, Claudio Toma, Irma Järvelä, Toma C, Rossi M, Sousa I, Blasi F, Bacchelli E, Alen R, Vanhala R, Monaco AP, Järvelä I, and Maestrini E

Subjects
Acetylserotonin O-Methyltransferase, DNA Mutational Analysis, Susceptibility gene, Biology, behavioral disciplines and activities, Polymorphism, Single Nucleotide, 03 medical and health sciences, Cellular and Molecular Neuroscience, 0302 clinical medicine, mental disorders, Replication (statistics), medicine, Humans, Genetic Predisposition to Disease, Autistic Disorder, Molecular Biology, 030304 developmental biology, Genetics, Family health, Family Health, 0303 health sciences, medicine.disease, 3. Good health, Europe, Psychiatry and Mental health, Autism, 030217 neurology & neurosurgery
Abstract

Is ASMT a susceptibility gene for autism spectrum disorders? A replication study in European populations

Published
2007

18. Mapping autism risk loci using genetic linkage and chromosomal rearrangements

Author

Peter, Szatmari, Andrew D, Paterson, Lonnie, Zwaigenbaum, Wendy, Roberts, Jessica, Brian, Xiao-Qing, Liu, John B, Vincent, Jennifer L, Skaug, Ann P, Thompson, Lili, Senman, Lars, Feuk, Cheng, Qian, Susan E, Bryson, Marshall B, Jones, Christian R, Marshall, Stephen W, Scherer, Veronica J, Vieland, Christopher, Bartlett, La Vonne, Mangin, Rhinda, Goedken, Alberto, Segre, Margaret A, Pericak-Vance, Michael L, Cuccaro, John R, Gilbert, Harry H, Wright, Ruth K, Abramson, Catalina, Betancur, Thomas, Bourgeron, Christopher, Gillberg, Marion, Leboyer, Joseph D, Buxbaum, Kenneth L, Davis, Eric, Hollander, Jeremy M, Silverman, Joachim, Hallmayer, Linda, Lotspeich, James S, Sutcliffe, Jonathan L, Haines, Susan E, Folstein, Joseph, Piven, Thomas H, Wassink, Val, Sheffield, Daniel H, Geschwind, Maja, Bucan, W Ted, Brown, Rita M, Cantor, John N, Constantino, T Conrad, Gilliam, Martha, Herbert, Clara, Lajonchere, David H, Ledbetter, Christa, Lese-Martin, Janet, Miller, Stan, Nelson, Carol A, Samango-Sprouse, Sarah, Spence, Matthew, State, Rudolph E, Tanzi, Hilary, Coon, Geraldine, Dawson, Bernie, Devlin, Annette, Estes, Pamela, Flodman, Lambertus, Klei, William M, McMahon, Nancy, Minshew, Jeff, Munson, Elena, Korvatska, Patricia M, Rodier, Gerard D, Schellenberg, Moyra, Smith, M Anne, Spence, Chris, Stodgell, Ping Guo, Tepper, Ellen M, Wijsman, Chang-En, Yu, Bernadette, Rogé, Carine, Mantoulan, Kerstin, Wittemeyer, Annemarie, Poustka, Bärbel, Felder, Sabine M, Klauck, Claudia, Schuster, Fritz, Poustka, Sven, Bölte, Sabine, Feineis-Matthews, Evelyn, Herbrecht, Gabi, Schmötzer, John, Tsiantis, Katerina, Papanikolaou, Elena, Maestrini, Elena, Bacchelli, Francesca, Blasi, Simona, Carone, Claudio, Toma, Herman, Van Engeland, Maretha, de Jonge, Chantal, Kemner, Frederieke, Koop, Frederike, Koop, Marjolein, Langemeijer, Marjolijn, Langemeijer, Channa, Hijmans, Channa, Hijimans, Wouter G, Staal, Gillian, Baird, Patrick F, Bolton, Michael L, Rutter, Emma, Weisblatt, Jonathan, Green, Catherine, Aldred, Julie-Anne, Wilkinson, Andrew, Pickles, Ann, Le Couteur, Tom, Berney, Helen, McConachie, Anthony J, Bailey, Kostas, Francis, Gemma, Honeyman, Aislinn, Hutchinson, Jeremy R, Parr, Simon, Wallace, Anthony P, Monaco, Gabrielle, Barnby, Kazuhiro, Kobayashi, Janine A, Lamb, Ines, Sousa, Nuala, Sykes, Edwin H, Cook, Stephen J, Guter, Bennett L, Leventhal, Jeff, Salt, Catherine, Lord, Christina, Corsello, Vanessa, Hus, Daniel E, Weeks, Fred, Volkmar, Maïté, Tauber, Eric, Fombonne, Andy, Shih, Kacie J, Meyer, Department of Psychiatry and Behavioural Neurosciences, McMaster University [Hamilton, Ontario]-Offord Centre for Child Studies, The Centre for Applied Genomics, Toronto, University of Toronto-The Hospital for sick children [Toronto] (SickKids)-Department of Molecular Genetics-McLaughlin Centre, Department of Pediatrics, University of Alberta, Autism Research Unit, The Hospital for sick children [Toronto] (SickKids)-University of Toronto, Department of Psychiatry, University of Toronto, Departments of Pediatrics and Psychology, Dalhousie University [Halifax], Department of Neural and Behavioral Sciences, Pennsylvania State University (Penn State), Penn State System-Penn State System, Department of Molecular Genetics [Toronto], Battelle Center for Mathematical Medicine, Ohio State University [Columbus] (OSU)-Nationwide Children's Hospital, Department of Pathology and Laboratory Medicine, University of North Carolina [Chapel Hill] (UNC), University of North Carolina System (UNC)-University of North Carolina System (UNC), Department of Computer Science, University of Iowa [Iowa City], John P. Hussman Institute for Human Genomics, University of Miami [Coral Gables], W.S. Hall Psychiatric Institute, University of South Carolina [Columbia], Physiopathologie des Maladies du Système Nerveux Central, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Génétique Humaine et Fonctions Cognitives, Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS), Gillberg Neuropsychiatry Centre [Göteborg, Sueden], Institute of Neuroscience and Physiology [Göteborg]-University of Gothenburg (GU), Institute of Child Health, University College of London [London] (UCL), Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Friedman Brain Institute, Mount Sinai, Icahn School of Medicine at Mount Sinai [New York] (MSSM), Department of Neuroscience, PennState Meteorology Department, Department of Psychiatry [Pittsburgh], University of Pittsburgh School of Medicine, Pennsylvania Commonwealth System of Higher Education (PCSHE)-Pennsylvania Commonwealth System of Higher Education (PCSHE), Stanford School of Medicine [Stanford], Stanford Medicine, Stanford University-Stanford University, Department of Psychiatry and Behavioral Sciences [Stanford], Vanderbilt Brain Institute, Vanderbilt University School of Medicine [Nashville], Department of Molecular Physiology & Biophysics and Psychiatry, Vanderbilt University [Nashville]-Centers for Human Genetics Research and Molecular Neuroscience, Johns Hopkins University (JHU), Carolina Institute for Developmental Disabilities, Carver College of Medicine [Iowa City], University of Iowa [Iowa City]-University of Iowa [Iowa City], University of Iowa [Iowa City]-Howard Hughes Medical-Institute Carver College of Medicine, Department of Neurology, UCLA School of Medicine, Department of Genetics, University of Pennsylvania [Philadelphia]-School of Medicine, N.Y.S. Institute for Basic Research in Developmental Disabilities, Department of Human Genetics, UCLA, University of California [Los Angeles] (UCLA), University of California-University of California-Semel Institute, Washington University in Saint Louis (WUSTL), University of Chicago, Harvard Medical School [Boston] (HMS), Autism Genetic Resource Exchange, Autism Speaks, Emory University [Atlanta, GA], Developmental Brain and Behaviour Unit, University of Southampton, Cure Autism Now, Institute of Human Genetics, Rheinische Friedrich-Wilhelms-Universität Bonn, Children's National Medical Center, The George Washington University (GW), Massachusetts General Hospital, Massachusetts General Hospital [Boston], Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris [Pisa], Autism Speaks and the Department of Psychiatry, Department of Speech and Hearing Sciences [Washington], University of Washington [Seattle], University of California [Irvine] (UCI), University of California-University of California, Department of Psychiatry and Behavioral Sciences, Department of OB/GYN, University of Rochester Medical Center, Pathology and Laboratory Medicine, University of Pennsylvania [Philadelphia], Department of Epidemiology, University of Pittsburgh (PITT), Departments of Biostatistics and Medicine, Department of Medicine, Octogone Unité de Recherche Interdisciplinaire (Octogone), Université Toulouse - Jean Jaurès (UT2J), Centre de Référence du Syndrome de Prader-Willi, CHU Toulouse [Toulouse], University of Oxford [Oxford]-Warneford Hospital, Division of Molecular Genome Analysis, German Cancer Research Center - Deutsches Krebsforschungszentrum [Heidelberg] (DKFZ), Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Goethe-Universität Frankfurt am Main, University Department of Child Psychiatry, National and Kapodistrian University of Athens (NKUA), Department of Pharmacy and Biotechnology, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Medical Genetics Laboratory, Policlinico S. Orsola-Malpighi, University Medical Center [Utrecht]-Brain Center Rudolf Magnus, Department of Neurocognition, Maastricht University [Maastricht], Newcomen Centre, Guy's Hospital [London], Department of Child and Adolescent Psychiatry, Institute of psychiatry, MRC Social, Genetic and Developmental Psychiatry Centre (SGDP), The Institute of Psychiatry-King‘s College London, University of Cambridge Clinical School, University of Cambridge [UK] (CAM), Manchester Academic Health Sciences Centre, Department of Medicine, Manchester, University of Manchester [Manchester]-School of Epidemiology and Health Science, Newcastle University [Newcastle]-Institute of Health & Society (Child & Adolescent Psychiatry), Child and Adolescent Mental Health, Newcastle University [Newcastle], Institutes of Neuroscience and Health and Society, The Wellcome Trust Centre for Human Genetics [Oxford], University of Oxford [Oxford], Centre for Integrated Genomic Medical Research, Manchester, University of Manchester [Manchester], Institute for Juvenile Research-University of Illinois [Chicago] (UIC), University of Illinois System-University of Illinois System, Institute for Juvenile Research, University of Illinois [Chicago] (UIC), Department of Disability and Human Development, New York University [New York] (NYU), NYU System (NYU)-NYU System (NYU), Autism and Communicative Disorders Centre, University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Human Genetics Department, SFU Discrete Mathematics Group (SFU-DMG), Simon Fraser University (SFU.ca), Child Study Centre, Yale University School of Medicine, Centre d'Endocrinologie, Maladies Osseuses, Génétique et Gynécologie Médicale, Hôpital des Enfants, CHU Toulouse [Toulouse]-CHU Toulouse [Toulouse], Department of Child Psychiatry, McGill University = Université McGill [Montréal, Canada]-Montreal Children's Hospital, McGill University Health Center [Montreal] (MUHC)-McGill University Health Center [Montreal] (MUHC), Scientific Affairs, Autism Genome Project Consortium, RS: FPN CN II, Cognitive Neuroscience, MUMC+: HZC Klinische Neurofysiologie (5), The Hospital for sick children [Toronto] (SickKids)-University of Toronto-Department of Molecular Genetics-McLaughlin Centre, University of California (UC)-University of California (UC)-Semel Institute, University of California [Irvine] (UC Irvine), University of California (UC)-University of California (UC), King‘s College London-The Institute of Psychiatry, Yale School of Medicine [New Haven, Connecticut] (YSM), Betancur, Catalina, Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS), University of Pennsylvania-School of Medicine, University of Pennsylvania, Pôle Enfants [CHU Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), University of Oxford-Warneford Hospital, University of Oxford, Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Université de Toulouse (UT)-Université de Toulouse (UT), Szatmari P, Paterson AD, Zwaigenbaum L, Roberts W, Brian J, Liu XQ, Vincent JB, Skaug JL, Thompson AP, Senman L, Feuk L, Qian C, Bryson SE, Jones MB, Marshall CR, Scherer SW, Vieland VJ, Bartlett C, Mangin LV, Goedken R, Segre A, Pericak-Vance MA, Cuccaro ML, Gilbert JR, Wright HH, Abramson RK, Betancur C, Bourgeron T, Gillberg C, Leboyer M, Buxbaum JD, Davis KL, Hollander E, Silverman JM, Hallmayer J, Lotspeich L, Sutcliffe JS, Haines JL, Folstein SE, Piven J, Wassink TH, Sheffield V, Geschwind DH, Bucan M, Brown WT, Cantor RM, Constantino JN, Gilliam TC, Herbert M, Lajonchere C, Ledbetter DH, Lese-Martin C, Miller J, Nelson S, Samango-Sprouse CA, Spence S, State M, Tanzi RE, Coon H, Dawson G, Devlin B, Estes A, Flodman P, Klei L, McMahon WM, Minshew N, Munson J, Korvatska E, Rodier PM, Schellenberg GD, Smith M, Spence MA, Stodgell C, Tepper PG, Wijsman EM, Yu CE, Roge B, Mantoulan C, Wittemeyer K, Poustka A, Felder B, Klauck SM, Schuster C, Poustka F, Bolte S, Feineis-Matthews S, Herbrecht E, Schmotzer G, Tsiantis J, Papanikolaou K, Maestrini E, Bacchelli E, Blasi F, Carone S, Toma C, Van Engeland H, de Jonge M, Kemner C, Koop F, Langemeijer M, Hijimans C, Staal WG, Baird G, Bolton PF, Rutter ML, Weisblatt E, Green J, Aldred C, Wilkinson JA, Pickles A, Le Couteur A, Berney T, McConachie H, Bailey AJ, Francis K, Honeyman G, Hutchinson A, Parr JR, Wallace S, Monaco AP, Barnby G, Kobayashi K, Lamb JA, Sousa I, Sykes N, Cook EH, Guter SJ, Leventhal BL, Salt J, Lord C, Corsello C, Hus V, Weeks DE, Volkmar F, Tauber M, Fombonne E, and Shih A.

Subjects
Male, genetic structures, Genetic Linkage, Neurexin, [SDV.GEN] Life Sciences [q-bio]/Genetics, 0302 clinical medicine, Risk Factors, MESH: Risk Factors, Heritability of autism, Copy-number variation, MESH: Genetic Variation, Genetics, 0303 health sciences, medicine.diagnostic_test, MESH: Genetic Testing, MESH: Genetic Predisposition to Disease, Chromosome Mapping, 3. Good health, Female, MESH: Genetic Linkage, MESH: Autistic Disorder, Epigenetics of autism, Biology, Article, 03 medical and health sciences, Genetic linkage, mental disorders, medicine, Humans, MESH: Chromosome Aberrations, Family, Genetic Predisposition to Disease, Genetic Testing, Autistic Disorder, MESH: Family, 030304 developmental biology, Genetic testing, Chromosome Aberrations, [SDV.GEN]Life Sciences [q-bio]/Genetics, MESH: Humans, Genetic Variation, medicine.disease, Genetic architecture, MESH: Male, MESH: Lod Score, Autism, Lod Score, MESH: Chromosome Mapping, MESH: Female, 030217 neurology & neurosurgery
Abstract

International audience; Autism spectrum disorders (ASDs) are common, heritable neurodevelopmental conditions. The genetic architecture of ASDs is complex, requiring large samples to overcome heterogeneity. Here we broaden coverage and sample size relative to other studies of ASDs by using Affymetrix 10K SNP arrays and 1,181 [corrected] families with at least two affected individuals, performing the largest linkage scan to date while also analyzing copy number variation in these families. Linkage and copy number variation analyses implicate chromosome 11p12-p13 and neurexins, respectively, among other candidate loci. Neurexins team with previously implicated neuroligins for glutamatergic synaptogenesis, highlighting glutamate-related genes as promising candidates for contributing to ASDs.

Published
2007

19. A novel approach of homozygous haplotype sharing identifies candidate genes in autism spectrum disorder

Author

Veronica J. Vieland, Stephen W. Scherer, Alison K. Merikangas, Naisha Shah, Edwin H. Cook, William M. McMahon, Kirsty Wing, Sabata C. Lund, Jacob A. S. Vorstman, Judith Conroy, Sabine M. Klauck, John B. Vincent, Astrid M. Vicente, Carine Mantoulan, Barbara Parrini, Jeremy R. Parr, Herman van Engeland, Jane McGrath, Guiomar Oliveira, Jonathan Green, James S. Sutcliffe, Peter Szatmari, Ann Le Couteur, Katerina Papanikolaou, Joseph Piven, Andrew Pickles, Gillian Baird, Inês Sousa, Gerard D. Schellenberg, Catarina Correia, Bennett L. Leventhal, Helen McConachie, Joseph T. Glessner, Fritz Poustka, Alistair T. Pagnamenta, Marion Leboyer, Nuala Sykes, Elena Maestrini, Penny Farrar, Maïté Tauber, Suzanne Foley, Richard Holt, Lonnie Zwaigenbaum, David J. Posey, John Tsiantis, Alexander Kolevzon, Agatino Battaglia, Maretha de Jonge, Hilary Coon, Gillian Hughes, John R. Gilbert, Patrick Bolton, Louise Gallagher, Jeff Munson, Kathy White, Michael L. Cuccaro, Annemarie Poustka, Daniel H. Geschwind, Richard Delorme, Annette Estes, Christine M. Freitag, Jillian P. Casey, Joana Almeida, Dalila Pinto, Simon Wallace, Sean Brennan, Stephen J. Guter, Stanley F. Nelson, Michael Rutter, Ghazala Mirza, Anthony J. Bailey, Christina Corsello, Kerstin Wittemeyer, Christian R. Marshall, Janine A. Lamb, Catherine Lord, Hakon Hakonarson, Jiannis Ragoussis, Catalina Betancur, Geraldine Dawson, Eftichia Duketis, Sean Ennis, Fiorella Minopoli, Christopher Gillberg, Vera Stoppioni, Bridget A. Fernandez, Frederico Duque, Eric Fombonne, Ellen M. Wijsman, Bernadette Rogé, Vanessa Hus, Susan E. Folstein, Jonathan L. Haines, Denis C. Shields, Tiago R. Magalhaes, Andrew Green, Thomas Bourgeron, Brian L. Yaspan, Ann P. Thompson, Gudrun Nygren, Judith Miller, Susanne Thomson, Roberta Igliozzi, Ana Filipa Sequeira, Kai Wang, Brett S. Abrahams, John I. Nurnberger, Michael Gill, Thomas H. Wassink, Christopher J. McDougle, Marc N. Coutanche, Anthony P. Monaco, Nadia Bolshakova, Cecilia Kim, Raffaella Tancredi, Rita M. Cantor, Phil Cali, Fred R. Volkmar, Tom Berney, Margaret A. Pericak-Vance, Joachim Hallmayer, Joseph D. Buxbaum, Elena Bacchelli, Latha Soorya, Richard Anney, Regina Regan, University of Bologna, Open University of Israël, IRCCS Fondazione Stella Maris [Pisa], Génétique humaine et fonctions cognitives - Human Genetics and Cognitive Functions (GHFC (UMR_3571 / U-Pasteur_1)), Institut Pasteur [Paris]-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut Pasteur [Paris], AP-HP Hôpital universitaire Robert-Debré [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Goethe-University Frankfurt am Main, Memorial University of Newfoundland [St. John's], McGill University = Université McGill [Montréal, Canada], Johns Hopkins University (JHU), Autism Research Centre and Section of Developmental Psychiatry, University of Cambridge [UK] (CAM), German Cancer Research Center - Deutsches Krebsforschungszentrum [Heidelberg] (DKFZ), Psychiatrie génétique, Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Mondor de Recherche Biomédicale, The Hospital for sick children [Toronto] (SickKids), University of Toronto, Australian Resources Research Centre, Kensington, Sécurité et Qualité des Produits d'Origine Végétale (SQPOV), Avignon Université (AU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Hôpital des Enfants, CHU Toulouse [Toulouse], School of Chemistry, Dalhousie University [Halifax], DLR Institut für Planetenforschung, Deutsches Zentrum für Luft- und Raumfahrt [Berlin] (DLR), Department of Human Genetics, University of Chicago, University of Alberta, Génétique de l'autisme = Genetics of Autism (NPS-01), Neurosciences Paris Seine (NPS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Biologie Paris Seine (IBPS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Biologie Paris Seine (IBPS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Seaver Autism Center for Research and Treatment, Icahn School of Medicine at Mount Sinai [New York] (MSSM), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), University of Koblenz-Landau, McMaster University [Hamilton, Ontario], The authors acknowledge the families participating in the study and the main funders of the Autism Genome Project Consortium (AGP): Autism Speaks (USA), the Health Research Board (HRB, Ireland), The Medical Research Council (MRC, UK), Genome Canada/Ontario Genomics Institute, and the Hilibrand Foundation (USA). Additional support for individual groups was provided by the US National Institutes of Health (NIH grants HD055751, HD055782, HD055784, HD35465, MH52708, MH55284, MH57881, MH061009, MH06359, MH066673, MH080647, MH081754, MH66766, NS026630, NS042165, NS049261), the Canadian Institute for Advanced Research (CIFAR), the Canadian Institutes for Health Research (CIHR), Assistance Publique–Hôpitaux de Paris (France), Autistica, Canada Foundation for Innovation/Ontario Innovation Trust, Deutsche Forschungsgemeinschaft (grant Po 255/17-4) (Germany), EC Sixth FP AUTISM MOLGEN, Fundação Calouste Gulbenkian (Portugal), Fondation de France, Fondation FondaMental (France), Fondation Orange (France), Fondation pour la Recherche Médicale (France), Fundação para a Ciência e Tecnologia (Portugal), the Hospital for Sick Children Foundation and University of Toronto (Canada), INSERM (France), Institut Pasteur (France), the Italian Ministry of Health (convention 181 of 19.10.2001), the John P. Hussman Foundation (USA), McLaughlin Centre (Canada), Ontario Ministry of Research and Innovation (Canada), the Seaver Foundation (USA), the Swedish Science Council, The Centre for Applied Genomics (Canada), the Utah Autism Foundation (USA) and the Wellcome Trust core award 075491/Z/04 (UK). We acknowledge support from the Autism Genetic Resource Exchange (AGRE) and Autism Speaks. We gratefully acknowledge the resources provided by the AGRE consortium and the participating AGRE families. AGRE is a program of Autism Speaks and is supported, in part, by grant 1U24MH081810 from the National Institute of Mental Health to Clara M. Lajonchere (PI). We wish to acknowledge the National Children’s Research Centre Our Lady’s Children’s Hospital Crumlin Ireland for providing additional support and the Wellcome Trust Case–Control Consortium for providing data sets that were used as part of this study. J.P.C is supported by an EMBARK postgraduate award from the Irish Research Council for Science, Engineering and Technology (IRCSET)., The AGRE Consortium, Casey JP, Magalhaes T, Conroy JM, Regan R, Shah N, Anney R, Shields DC, Abrahams BS, Almeida J, Bacchelli E, Bailey AJ, Baird G, Battaglia A, Berney T, Bolshakova N, Bolton PF, Bourgeron T, Brennan S, Cali P, Correia C, Corsello C, Coutanche M, Dawson G, de Jonge M, Delorme R, Duketis E, Duque F, Estes A, Farrar P, Fernandez BA, Folstein SE, Foley S, Fombonne E, Freitag CM, Gilbert J, Gillberg C, Glessner JT, Green J, Guter SJ, Hakonarson H, Holt R, Hughes G, Hus V, Igliozzi R, Kim C, Klauck SM, Kolevzon A, Lamb JA, Leboyer M, Le Couteur A, Leventhal BL, Lord C, Lund SC, Maestrini E, Mantoulan C, Marshall CR, McConachie H, McDougle CJ, McGrath J, McMahon WM, Merikangas A, Miller J, Minopoli F, Mirza GK, Munson J, Nelson SF, Nygren G, Oliveira G, Pagnamenta AT, Papanikolaou K, Parr JR, Parrini B, Pickles A, Pinto D, Piven J, Posey DJ, Poustka A, Poustka F, Ragoussis J, Roge B, Rutter ML, Sequeira AF, Soorya L, Sousa I, Sykes N, Stoppioni V, Tancredi R, Tauber M, Thompson AP, Thomson S, Tsiantis J, Van Engeland H, Vincent JB, Volkmar F, Vorstman JA, Wallace S, Wang K, Wassink TH, White K, Wing K, Wittemeyer K, Yaspan BL, Zwaigenbaum L, Betancur C, Buxbaum JD, Cantor RM, Cook EH, Coon H, Cuccaro ML, Geschwind DH, Haines JL, Hallmayer J, Monaco AP, Nurnberger JI Jr, Pericak-Vance MA, Schellenberg GD, Scherer SW, Sutcliffe JS, Szatmari P, Vieland VJ, Wijsman EM, Green A, Gill M, Gallagher L, Vicente A, Ennis S., McGill University, Institut National de la Recherche Agronomique (INRA)-Avignon Université (AU), Neuroscience Paris Seine (NPS), Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Paris Seine (IBPS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Paris Seine (IBPS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), University of Bologna/Università di Bologna, Institut Pasteur [Paris] (IP)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut Pasteur [Paris] (IP), Memorial University of Newfoundland = Université Memorial de Terre-Neuve [St. John's, Canada] (MUN), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Biologie Paris Seine (IBPS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Biologie Paris Seine (IBPS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut Pasteur [Paris], Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Biologie Paris Seine (IBPS), and Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Male, Candidate gene, Genome-wide association study, Linkage Disequilibrium, MESH: Child Development Disorders, Pervasive, Cohort Studies, MESH: Genotype, 0302 clinical medicine, MESH: Child, Cluster Analysis, Genetics(clinical), Copy-number variation, Child, MESH: Cohort Studies, Genetics (clinical), Original Investigation, SNPS, Genetics, 0303 health sciences, education.field_of_study, MESH: Middle Aged, MESH: Nuclear Family, MESH: Polymorphism, Single Nucleotide, Homozygote, MESH: Genetic Predisposition to Disease, Middle Aged, Autism spectrum disorder (ASD), 3. Good health, MESH: Linkage Disequilibrium, Female, MESH: DNA Copy Number Variations, [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], MESH: Homozygote, Adult, DNA Copy Number Variations, Genotype, Population, Single-nucleotide polymorphism, Biology, Polymorphism, Single Nucleotide, Nuclear Family, 03 medical and health sciences, HOMOZYGOSITY MAPPING, mental disorders, medicine, Humans, Genetic Predisposition to Disease, ddc:610, AUTISM, GENOME-WIDE ASSOCIATION, education, 030304 developmental biology, MESH: Humans, Genetic heterogeneity, Haplotype, MESH: Adult, MESH: Haplotypes, medicine.disease, MESH: Cluster Analysis, MESH: Male, Haplotypes, Child Development Disorders, Pervasive, Perturbações do Desenvolvimento Infantil e Saúde Mental, MESH: Genome-Wide Association Study, Autism, MESH: Female, 030217 neurology & neurosurgery, Genome-Wide Association Study
Abstract

Autism spectrum disorder (ASD) is a highly heritable disorder of complex and heterogeneous aetiology. It is primarily characterized by altered cognitive ability including impaired language and communication skills and fundamental deficits in social reciprocity. Despite some notable successes in neuropsychiatric genetics, overall, the high heritability of ASD (~90%) remains poorly explained by common genetic risk variants. However, recent studies suggest that rare genomic variation, in particular copy number variation, may account for a significant proportion of the genetic basis of ASD. We present a large scale analysis to identify candidate genes which may contain low-frequency recessive variation contributing to ASD while taking into account the potential contribution of population differences to the genetic heterogeneity of ASD. Our strategy, homozygous haplotype (HH) mapping, aims to detect homozygous segments of identical haplotype structure that are shared at a higher frequency amongst ASD patients compared to parental controls. The analysis was performed on 1,402 Autism Genome Project trios genotyped for 1 million single nucleotide polymorphisms (SNPs). We identified 25 known and 1,218 novel ASD candidate genes in the discovery analysis including CADM2, ABHD14A, CHRFAM7A, GRIK2, GRM3, EPHA3, FGF10, KCND2, PDZK1, IMMP2L and FOXP2. Furthermore, 10 of the previously reported ASD genes and 300 of the novel candidates identified in the discovery analysis were replicated in an independent sample of 1,182 trios. Our results demonstrate that regions of HH are significantly enriched for previously reported ASD candidate genes and the observed association is independent of gene size (odds ratio 2.10). Our findings highlight the applicability of HH mapping in complex disorders such as ASD and offer an alternative approach to the analysis of genome-wide association data. Electronic supplementary material The online version of this article (doi:10.1007/s00439-011-1094-6) contains supplementary material, which is available to authorized users.

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