Associations of HLA alleles with specific language impairment / R. NUDEL in Journal of Neurodevelopmental Disorders, 6-1 (December 2014)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 6-1 (December 2014) . - p.1 Titre : Associations of HLA alleles with specific language impairment Type de document : Texte imprimé et/ou numérique Auteurs : R. NUDEL, Auteur ; N. H. SIMPSON, Auteur ; Gillian BAIRD, Auteur ; A. O'HARE, Auteur ; G. CONTI-RAMSDEN, Auteur ; Patrick BOLTON, Auteur ; E. R. HENNESSY, Auteur ; A. P. MONACO, Auteur ; J. C. KNIGHT, Auteur ; B. WINNEY, Auteur ; S. E. FISHER, Auteur ; D. F. NEWBURY, Auteur Article en page(s) : p.1 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : BACKGROUND: Human leukocyte antigen (HLA) loci have been implicated in several neurodevelopmental disorders in which language is affected. However, to date, no studies have investigated the possible involvement of HLA loci in specific language impairment (SLI), a disorder that is defined primarily upon unexpected language impairment. We report association analyses of single-nucleotide polymorphisms (SNPs) and HLA types in a cohort of individuals affected by language impairment. METHODS: We perform quantitative association analyses of three linguistic measures and case-control association analyses using both SNP data and imputed HLA types. RESULTS: Quantitative association analyses of imputed HLA types suggested a role for the HLA-A locus in susceptibility to SLI. HLA-A A1 was associated with a measure of short-term memory (P = 0.004) and A3 with expressive language ability (P = 0.006). Parent-of-origin effects were found between HLA-B B8 and HLA-DQA1*0501 and receptive language. These alleles have a negative correlation with receptive language ability when inherited from the mother (P = 0.021, P = 0.034, respectively) but are positively correlated with the same trait when paternally inherited (P = 0.013, P = 0.029, respectively). Finally, case control analyses using imputed HLA types indicated that the DR10 allele of HLA-DRB1 was more frequent in individuals with SLI than population controls (P = 0.004, relative risk = 2.575), as has been reported for individuals with attention deficit hyperactivity disorder (ADHD). CONCLUSION: These preliminary data provide an intriguing link to those described by previous studies of other neurodevelopmental disorders and suggest a possible role for HLA loci in language disorders. En ligne : http://dx.doi.org/10.1186/1866-1955-6-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=345 [article] Associations of HLA alleles with specific language impairment [Texte imprimé et/ou numérique] / R. NUDEL, Auteur ; N. H. SIMPSON, Auteur ; Gillian BAIRD, Auteur ; A. O'HARE, Auteur ; G. CONTI-RAMSDEN, Auteur ; Patrick BOLTON, Auteur ; E. R. HENNESSY, Auteur ; A. P. MONACO, Auteur ; J. C. KNIGHT, Auteur ; B. WINNEY, Auteur ; S. E. FISHER, Auteur ; D. F. NEWBURY, Auteur . - p.1. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 6-1 (December 2014) . - p.1 Index. décimale : PER Périodiques Résumé : BACKGROUND: Human leukocyte antigen (HLA) loci have been implicated in several neurodevelopmental disorders in which language is affected. However, to date, no studies have investigated the possible involvement of HLA loci in specific language impairment (SLI), a disorder that is defined primarily upon unexpected language impairment. We report association analyses of single-nucleotide polymorphisms (SNPs) and HLA types in a cohort of individuals affected by language impairment. METHODS: We perform quantitative association analyses of three linguistic measures and case-control association analyses using both SNP data and imputed HLA types. RESULTS: Quantitative association analyses of imputed HLA types suggested a role for the HLA-A locus in susceptibility to SLI. HLA-A A1 was associated with a measure of short-term memory (P = 0.004) and A3 with expressive language ability (P = 0.006). Parent-of-origin effects were found between HLA-B B8 and HLA-DQA1*0501 and receptive language. These alleles have a negative correlation with receptive language ability when inherited from the mother (P = 0.021, P = 0.034, respectively) but are positively correlated with the same trait when paternally inherited (P = 0.013, P = 0.029, respectively). Finally, case control analyses using imputed HLA types indicated that the DR10 allele of HLA-DRB1 was more frequent in individuals with SLI than population controls (P = 0.004, relative risk = 2.575), as has been reported for individuals with attention deficit hyperactivity disorder (ADHD). CONCLUSION: These preliminary data provide an intriguing link to those described by previous studies of other neurodevelopmental disorders and suggest a possible role for HLA loci in language disorders. En ligne : http://dx.doi.org/10.1186/1866-1955-6-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=345

A family with autism and rare copy number variants disrupting the Duchenne/Becker muscular dystrophy gene DMD and TRPM3 / Alistair T. PAGNAMENTA in Journal of Neurodevelopmental Disorders, 3-2 (June 2011)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 3-2 (June 2011) . - p.124-31 Titre : A family with autism and rare copy number variants disrupting the Duchenne/Becker muscular dystrophy gene DMD and TRPM3 Type de document : Texte imprimé et/ou numérique Auteurs : Alistair T. PAGNAMENTA, Auteur ; R. HOLT, Auteur ; M. YUSUF, Auteur ; D. PINTO, Auteur ; K. WING, Auteur ; Catalina BETANCUR, Auteur ; Stephen SCHERER, Auteur ; E. V. VOLPI, Auteur ; A. P. MONACO, Auteur Article en page(s) : p.124-31 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Autism spectrum disorder is a genetically complex and clinically heterogeneous neurodevelopmental disorder. A recent study by the Autism Genome Project (AGP) used 1M single-nucleotide polymorphism arrays to show that rare genic copy number variants (CNVs), possibly acting in tandem, play a significant role in the genetic aetiology of this condition. In this study, we describe the phenotypic and genomic characterisation of a multiplex autism family from the AGP study that was found to harbour a duplication of exons 31-44 of the Duchenne/Becker muscular dystrophy gene DMD and also a rare deletion involving exons 1-9 of TRPM3. Further characterisation of these extremely rare CNVs was carried out using quantitative PCR, fluorescent in situ hybridisation, long-range PCR amplification and sequencing of junction fragments. The maternal chrX:32,097,213-32,321,945 tandem duplication and paternal chr9:72,480,413-73,064,196 deletion (NCBI build 36 coordinates) were transmitted to both affected boys, potentially signifying a multi-hit mechanism. The DMD reading frame rule predicts a Becker phenotype, characterised by later onset and milder symptoms. When last evaluated, neither child had developed signs of muscular dystrophy. These data are consistent with a degree of comorbidity between autism and muscular dystrophy and suggest that genomic background as well as the position of the mutation within the DMD gene may impact on the neurological correlates of Duchenne/Becker muscular dystrophy. Finally, communicating unexpected findings such as these back to families raises a number of ethical questions, which are discussed. En ligne : http://dx.doi.org/10.1007/s11689-011-9076-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=343 [article] A family with autism and rare copy number variants disrupting the Duchenne/Becker muscular dystrophy gene DMD and TRPM3 [Texte imprimé et/ou numérique] / Alistair T. PAGNAMENTA, Auteur ; R. HOLT, Auteur ; M. YUSUF, Auteur ; D. PINTO, Auteur ; K. WING, Auteur ; Catalina BETANCUR, Auteur ; Stephen SCHERER, Auteur ; E. V. VOLPI, Auteur ; A. P. MONACO, Auteur . - p.124-31. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 3-2 (June 2011) . - p.124-31 Index. décimale : PER Périodiques Résumé : Autism spectrum disorder is a genetically complex and clinically heterogeneous neurodevelopmental disorder. A recent study by the Autism Genome Project (AGP) used 1M single-nucleotide polymorphism arrays to show that rare genic copy number variants (CNVs), possibly acting in tandem, play a significant role in the genetic aetiology of this condition. In this study, we describe the phenotypic and genomic characterisation of a multiplex autism family from the AGP study that was found to harbour a duplication of exons 31-44 of the Duchenne/Becker muscular dystrophy gene DMD and also a rare deletion involving exons 1-9 of TRPM3. Further characterisation of these extremely rare CNVs was carried out using quantitative PCR, fluorescent in situ hybridisation, long-range PCR amplification and sequencing of junction fragments. The maternal chrX:32,097,213-32,321,945 tandem duplication and paternal chr9:72,480,413-73,064,196 deletion (NCBI build 36 coordinates) were transmitted to both affected boys, potentially signifying a multi-hit mechanism. The DMD reading frame rule predicts a Becker phenotype, characterised by later onset and milder symptoms. When last evaluated, neither child had developed signs of muscular dystrophy. These data are consistent with a degree of comorbidity between autism and muscular dystrophy and suggest that genomic background as well as the position of the mutation within the DMD gene may impact on the neurological correlates of Duchenne/Becker muscular dystrophy. Finally, communicating unexpected findings such as these back to families raises a number of ethical questions, which are discussed. En ligne : http://dx.doi.org/10.1007/s11689-011-9076-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=343

Further evidence for a parent-of-origin effect at the NOP9 locus on language-related phenotypes / K. A. PETTIGREW in Journal of Neurodevelopmental Disorders, 8-1 (December 2016)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 8-1 (December 2016) . - p.24 Titre : Further evidence for a parent-of-origin effect at the NOP9 locus on language-related phenotypes Type de document : Texte imprimé et/ou numérique Auteurs : K. A. PETTIGREW, Auteur ; E. FRINTON, Auteur ; R. NUDEL, Auteur ; M. T. M. CHAN, Auteur ; P. THOMPSON, Auteur ; M. E. HAYIOU-THOMAS, Auteur ; J. B. TALCOTT, Auteur ; J. STEIN, Auteur ; A. P. MONACO, Auteur ; C. HULME, Auteur ; M. J. SNOWLING, Auteur ; D. F. NEWBURY, Auteur ; S. PARACCHINI, Auteur Article en page(s) : p.24 Langues : Anglais (eng) Mots-clés : Candidate gene  Dyslexia  Genetic association  Language impairment  Parent-of-origin Index. décimale : PER Périodiques Résumé : BACKGROUND: Specific language impairment (SLI) is a common neurodevelopmental disorder, observed in 5-10 % of children. Family and twin studies suggest a strong genetic component, but relatively few candidate genes have been reported to date. A recent genome-wide association study (GWAS) described the first statistically significant association specifically for a SLI cohort between a missense variant (rs4280164) in the NOP9 gene and language-related phenotypes under a parent-of-origin model. Replications of these findings are particularly challenging because the availability of parental DNA is required. METHODS: We used two independent family-based cohorts characterised with reading- and language-related traits: a longitudinal cohort (n = 106 informative families) including children with language and reading difficulties and a nuclear family cohort (n = 264 families) selected for dyslexia. RESULTS: We observed association with language-related measures when modelling for parent-of-origin effects at the NOP9 locus in both cohorts: minimum P = 0.001 for phonological awareness with a paternal effect in the first cohort and minimum P = 0.0004 for irregular word reading with a maternal effect in the second cohort. Allelic and parental trends were not consistent when compared to the original study. CONCLUSIONS: A parent-of-origin effect at this locus was detected in both cohorts, albeit with different trends. These findings contribute in interpreting the original GWAS report and support further investigations of the NOP9 locus and its role in language-related traits. A systematic evaluation of parent-of-origin effects in genetic association studies has the potential to reveal novel mechanisms underlying complex traits. En ligne : http://dx.doi.org/10.1186/s11689-016-9157-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=349 [article] Further evidence for a parent-of-origin effect at the NOP9 locus on language-related phenotypes [Texte imprimé et/ou numérique] / K. A. PETTIGREW, Auteur ; E. FRINTON, Auteur ; R. NUDEL, Auteur ; M. T. M. CHAN, Auteur ; P. THOMPSON, Auteur ; M. E. HAYIOU-THOMAS, Auteur ; J. B. TALCOTT, Auteur ; J. STEIN, Auteur ; A. P. MONACO, Auteur ; C. HULME, Auteur ; M. J. SNOWLING, Auteur ; D. F. NEWBURY, Auteur ; S. PARACCHINI, Auteur . - p.24. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 8-1 (December 2016) . - p.24 Mots-clés : Candidate gene  Dyslexia  Genetic association  Language impairment  Parent-of-origin Index. décimale : PER Périodiques Résumé : BACKGROUND: Specific language impairment (SLI) is a common neurodevelopmental disorder, observed in 5-10 % of children. Family and twin studies suggest a strong genetic component, but relatively few candidate genes have been reported to date. A recent genome-wide association study (GWAS) described the first statistically significant association specifically for a SLI cohort between a missense variant (rs4280164) in the NOP9 gene and language-related phenotypes under a parent-of-origin model. Replications of these findings are particularly challenging because the availability of parental DNA is required. METHODS: We used two independent family-based cohorts characterised with reading- and language-related traits: a longitudinal cohort (n = 106 informative families) including children with language and reading difficulties and a nuclear family cohort (n = 264 families) selected for dyslexia. RESULTS: We observed association with language-related measures when modelling for parent-of-origin effects at the NOP9 locus in both cohorts: minimum P = 0.001 for phonological awareness with a paternal effect in the first cohort and minimum P = 0.0004 for irregular word reading with a maternal effect in the second cohort. Allelic and parental trends were not consistent when compared to the original study. CONCLUSIONS: A parent-of-origin effect at this locus was detected in both cohorts, albeit with different trends. These findings contribute in interpreting the original GWAS report and support further investigations of the NOP9 locus and its role in language-related traits. A systematic evaluation of parent-of-origin effects in genetic association studies has the potential to reveal novel mechanisms underlying complex traits. En ligne : http://dx.doi.org/10.1186/s11689-016-9157-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=349

Novel method for combined linkage and genome-wide association analysis finds evidence of distinct genetic architecture for two subtypes of autism / V. J. VIELAND in Journal of Neurodevelopmental Disorders, 3-2 (June 2011)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 3-2 (June 2011) . - p.113-23 Titre : Novel method for combined linkage and genome-wide association analysis finds evidence of distinct genetic architecture for two subtypes of autism Type de document : Texte imprimé et/ou numérique Auteurs : V. J. VIELAND, Auteur ; J. HALLMAYER, Auteur ; Y. HUANG, Auteur ; Alistair T. PAGNAMENTA, Auteur ; D. PINTO, Auteur ; H. KHAN, Auteur ; A. P. MONACO, Auteur ; Andrew D. PATERSON, Auteur ; Stephen SCHERER, Auteur ; J. S. SUTCLIFFE, Auteur ; P. SZATMARI, Auteur Article en page(s) : p.113-23 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : The Autism Genome Project has assembled two large datasets originally designed for linkage analysis and genome-wide association analysis, respectively: 1,069 multiplex families genotyped on the Affymetrix 10 K platform, and 1,129 autism trios genotyped on the Illumina 1 M platform. We set out to exploit this unique pair of resources by analyzing the combined data with a novel statistical method, based on the PPL statistical framework, simultaneously searching for linkage and association to loci involved in autism spectrum disorders (ASD). Our analysis also allowed for potential differences in genetic architecture for ASD in the presence or absence of lower IQ, an important clinical indicator of ASD subtypes. We found strong evidence of multiple linked loci; however, association evidence implicating specific genes was low even under the linkage peaks. Distinct loci were found in the lower IQ families, and these families showed stronger and more numerous linkage peaks, while the normal IQ group yielded the strongest association evidence. It appears that presence/absence of lower IQ (LIQ) demarcates more genetically homogeneous subgroups of ASD patients, with not just different sets of loci acting in the two groups, but possibly distinct genetic architecture between them, such that the LIQ group involves more major gene effects (amenable to linkage mapping), while the normal IQ group potentially involves more common alleles with lower penetrances. The possibility of distinct genetic architecture across subtypes of ASD has implications for further research and perhaps for research approaches to other complex disorders as well. En ligne : http://dx.doi.org/10.1007/s11689-011-9072-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=343 [article] Novel method for combined linkage and genome-wide association analysis finds evidence of distinct genetic architecture for two subtypes of autism [Texte imprimé et/ou numérique] / V. J. VIELAND, Auteur ; J. HALLMAYER, Auteur ; Y. HUANG, Auteur ; Alistair T. PAGNAMENTA, Auteur ; D. PINTO, Auteur ; H. KHAN, Auteur ; A. P. MONACO, Auteur ; Andrew D. PATERSON, Auteur ; Stephen SCHERER, Auteur ; J. S. SUTCLIFFE, Auteur ; P. SZATMARI, Auteur . - p.113-23. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 3-2 (June 2011) . - p.113-23 Index. décimale : PER Périodiques Résumé : The Autism Genome Project has assembled two large datasets originally designed for linkage analysis and genome-wide association analysis, respectively: 1,069 multiplex families genotyped on the Affymetrix 10 K platform, and 1,129 autism trios genotyped on the Illumina 1 M platform. We set out to exploit this unique pair of resources by analyzing the combined data with a novel statistical method, based on the PPL statistical framework, simultaneously searching for linkage and association to loci involved in autism spectrum disorders (ASD). Our analysis also allowed for potential differences in genetic architecture for ASD in the presence or absence of lower IQ, an important clinical indicator of ASD subtypes. We found strong evidence of multiple linked loci; however, association evidence implicating specific genes was low even under the linkage peaks. Distinct loci were found in the lower IQ families, and these families showed stronger and more numerous linkage peaks, while the normal IQ group yielded the strongest association evidence. It appears that presence/absence of lower IQ (LIQ) demarcates more genetically homogeneous subgroups of ASD patients, with not just different sets of loci acting in the two groups, but possibly distinct genetic architecture between them, such that the LIQ group involves more major gene effects (amenable to linkage mapping), while the normal IQ group potentially involves more common alleles with lower penetrances. The possibility of distinct genetic architecture across subtypes of ASD has implications for further research and perhaps for research approaches to other complex disorders as well. En ligne : http://dx.doi.org/10.1007/s11689-011-9072-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=343

---

1 (1 - 4 / 4)