5 recherche sur le mot-clé 'Exome Sequencing'

Calculating genetic risk for dysfunction in pleiotropic biological processes using whole exome sequencing data / Olivia J. VEATCH in Journal of Neurodevelopmental Disorders, 14 (2022)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 14 (2022) Titre : Calculating genetic risk for dysfunction in pleiotropic biological processes using whole exome sequencing data Type de document : texte imprimé Auteurs : Olivia J. VEATCH, Auteur ; Diego R. MAZZOTTI, Auteur ; Robert T. SCHULTZ, Auteur ; Ted ABEL, Auteur ; Jacob J. MICHAELSON, Auteur ; Edward S. BRODKIN, Auteur ; Birkan TUNC, Auteur ; Susan G. ASSOULINE, Auteur ; Thomas NICKL-JOCKSCHAT, Auteur ; Beth A. MALOW, Auteur ; James S. SUTCLIFFE, Auteur ; Allan I. PACK, Auteur Langues : Anglais (eng) Mots-clés : Adolescent  Autism Spectrum Disorder/complications/genetics  Biological Phenomena  Child  Exome/genetics  Humans  Sleep Wake Disorders/complications/genetics  Exome Sequencing  Autism spectrum disorders  Genetic risk scores  Pleiotropy  Sleep duration  Systems biology Index. décimale : PER Périodiques Résumé : BACKGROUND: Numerous genes are implicated in autism spectrum disorder (ASD). ASD encompasses a wide-range and severity of symptoms and co-occurring conditions; however, the details of how genetic variation contributes to phenotypic differences are unclear. This creates a challenge for translating genetic evidence into clinically useful knowledge. Sleep disturbances are particularly prevalent co-occurring conditions in ASD, and genetics may inform treatment. Identifying convergent mechanisms with evidence for dysfunction that connect ASD and sleep biology could help identify better treatments for sleep disturbances in these individuals. METHODS: To identify mechanisms that influence risk for ASD and co-occurring sleep disturbances, we analyzed whole exome sequence data from individuals in the Simons Simplex Collection (n = 2380). We predicted protein damaging variants (PDVs) in genes currently implicated in either ASD or sleep duration in typically developing children. We predicted a network of ASD-related proteins with direct evidence for interaction with sleep duration-related proteins encoded by genes with PDVs. Overrepresentation analyses of Gene Ontology-defined biological processes were conducted on the resulting gene set. We calculated the likelihood of dysfunction in the top overrepresented biological process. We then tested if scores reflecting genetic dysfunction in the process were associated with parent-reported sleep duration. RESULTS: There were 29 genes with PDVs in the ASD dataset where variation was reported in the literature to be associated with both ASD and sleep duration. A network of 108 proteins encoded by ASD and sleep duration candidate genes with PDVs was identified. The mechanism overrepresented in PDV-containing genes that encode proteins in the interaction network with the most evidence for dysfunction was cerebral cortex development (GO:0,021,987). Scores reflecting dysfunction in this process were associated with sleep durations; the largest effects were observed in adolescents (p = 4.65 × 10(-3)). CONCLUSIONS: Our bioinformatic-driven approach detected a biological process enriched for genes encoding a protein-protein interaction network linking ASD gene products with sleep duration gene products where accumulation of potentially damaging variants in individuals with ASD was associated with sleep duration as reported by the parents. Specifically, genetic dysfunction impacting development of the cerebral cortex may affect sleep by disrupting sleep homeostasis which is evidenced to be regulated by this brain region. Future functional assessments and objective measurements of sleep in adolescents with ASD could provide the basis for more informed treatment of sleep problems in these individuals. En ligne : https://dx.doi.org/10.1186/s11689-022-09448-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=574 [article] Calculating genetic risk for dysfunction in pleiotropic biological processes using whole exome sequencing data [texte imprimé] / Olivia J. VEATCH, Auteur ; Diego R. MAZZOTTI, Auteur ; Robert T. SCHULTZ, Auteur ; Ted ABEL, Auteur ; Jacob J. MICHAELSON, Auteur ; Edward S. BRODKIN, Auteur ; Birkan TUNC, Auteur ; Susan G. ASSOULINE, Auteur ; Thomas NICKL-JOCKSCHAT, Auteur ; Beth A. MALOW, Auteur ; James S. SUTCLIFFE, Auteur ; Allan I. PACK, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 14 (2022) Mots-clés : Adolescent  Autism Spectrum Disorder/complications/genetics  Biological Phenomena  Child  Exome/genetics  Humans  Sleep Wake Disorders/complications/genetics  Exome Sequencing  Autism spectrum disorders  Genetic risk scores  Pleiotropy  Sleep duration  Systems biology Index. décimale : PER Périodiques Résumé : BACKGROUND: Numerous genes are implicated in autism spectrum disorder (ASD). ASD encompasses a wide-range and severity of symptoms and co-occurring conditions; however, the details of how genetic variation contributes to phenotypic differences are unclear. This creates a challenge for translating genetic evidence into clinically useful knowledge. Sleep disturbances are particularly prevalent co-occurring conditions in ASD, and genetics may inform treatment. Identifying convergent mechanisms with evidence for dysfunction that connect ASD and sleep biology could help identify better treatments for sleep disturbances in these individuals. METHODS: To identify mechanisms that influence risk for ASD and co-occurring sleep disturbances, we analyzed whole exome sequence data from individuals in the Simons Simplex Collection (n = 2380). We predicted protein damaging variants (PDVs) in genes currently implicated in either ASD or sleep duration in typically developing children. We predicted a network of ASD-related proteins with direct evidence for interaction with sleep duration-related proteins encoded by genes with PDVs. Overrepresentation analyses of Gene Ontology-defined biological processes were conducted on the resulting gene set. We calculated the likelihood of dysfunction in the top overrepresented biological process. We then tested if scores reflecting genetic dysfunction in the process were associated with parent-reported sleep duration. RESULTS: There were 29 genes with PDVs in the ASD dataset where variation was reported in the literature to be associated with both ASD and sleep duration. A network of 108 proteins encoded by ASD and sleep duration candidate genes with PDVs was identified. The mechanism overrepresented in PDV-containing genes that encode proteins in the interaction network with the most evidence for dysfunction was cerebral cortex development (GO:0,021,987). Scores reflecting dysfunction in this process were associated with sleep durations; the largest effects were observed in adolescents (p = 4.65 × 10(-3)). CONCLUSIONS: Our bioinformatic-driven approach detected a biological process enriched for genes encoding a protein-protein interaction network linking ASD gene products with sleep duration gene products where accumulation of potentially damaging variants in individuals with ASD was associated with sleep duration as reported by the parents. Specifically, genetic dysfunction impacting development of the cerebral cortex may affect sleep by disrupting sleep homeostasis which is evidenced to be regulated by this brain region. Future functional assessments and objective measurements of sleep in adolescents with ASD could provide the basis for more informed treatment of sleep problems in these individuals. En ligne : https://dx.doi.org/10.1186/s11689-022-09448-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=574

Association between rare, genetic variants linked to autism and ultrasonography fetal anomalies in children with autism spectrum disorder / Ohad REGEV in Journal of Neurodevelopmental Disorders, 16 (2024)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 16 (2024) Titre : Association between rare, genetic variants linked to autism and ultrasonography fetal anomalies in children with autism spectrum disorder Type de document : texte imprimé Auteurs : Ohad REGEV, Auteur ; Apurba SHIL, Auteur ; Tal BRONSHTEIN, Auteur ; Amnon HADAR, Auteur ; Gal MEIRI, Auteur ; Dikla ZIGDON, Auteur ; Analya MICHAELOVSKI, Auteur ; Reli HERSHKOVITZ, Auteur ; Idan MENASHE, Auteur Langues : Anglais (eng) Mots-clés : Humans  Autism Spectrum Disorder/genetics/diagnostic imaging  Female  Male  Ultrasonography, Prenatal  Child  Exome Sequencing  Pregnancy  Cross-Sectional Studies  Child, Preschool  Genetic Variation  Genetic Predisposition to Disease  Autism spectrum disorder  Congenital anomalies  Fetal development  Genetic mutations  Prenatal ultrasound  Ultrasonography fetal anomalies  Whole-exome sequencing Index. décimale : PER Périodiques Résumé : BACKGROUND: Recent evidence suggests that certain fetal anomalies detected upon prenatal ultrasound screenings are associated with autism spectrum disorder (ASD). In this cross-sectional study, we aimed to identify genetic variants associated with fetal ultrasound anomalies (UFAs) in children with ASD. METHODS: The study included all children with ASD who are registered in the database of the Azrieli National Center of Autism and Neurodevelopment and for whom both prenatal ultrasound and whole exome sequencing (WES) data were available. We applied our in-house integrative bioinformatics pipeline, AutScore, to these WES data to prioritize rare, gene-disrupting variants (GDVs) probably contributing to ASD susceptibily. Univariate statistics and multivariable regression were used to assess the associations between UFAs and GDVs identified in these children. RESULTS: The study sample comprised 126 children, of whom 43 (34.1%) had at least one UFA detected in the prenatal ultrasound scan. A total of 87 candidate ASD genetic variants were detected in 60 children, with 24 (40%) children carrying multiple variants. Children with UFAs were more likely to have loss-of-function (LoF) mutations (aOR = 2.55, 95%CI: 1.13-5.80). This association was particularly noticeable when children with structural anomalies or children with UFAs in their head and brain scans were compared to children without UFAs (any mutation: aOR = 8.28, 95%CI: 2.29-30.01; LoF: aOR = 5.72, 95%CI: 2.08-15.71 and any mutation: aOR = 6.39, 95%CI: 1.34-30.47; LoF: aOR = 4.50, 95%CI: 1.32-15.35, respectively). GDVs associated with UFAs were enriched in genes highly expressed across all tissues (aOR = 2.76, 95%CI: 1.14-6.68). There was a weak, but significant, correlation between the number of mutations and the number of abnormalities detected in the same children (r = 0.21, P = 0.016). CONCLUSIONS: The results provide valuable insights into the potential genetic basis of prenatal organogenesis abnormalities associated with ASD and shed light on the complex interplay between genetic factors and fetal development. En ligne : https://dx.doi.org/10.1186/s11689-024-09573-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=576 [article] Association between rare, genetic variants linked to autism and ultrasonography fetal anomalies in children with autism spectrum disorder [texte imprimé] / Ohad REGEV, Auteur ; Apurba SHIL, Auteur ; Tal BRONSHTEIN, Auteur ; Amnon HADAR, Auteur ; Gal MEIRI, Auteur ; Dikla ZIGDON, Auteur ; Analya MICHAELOVSKI, Auteur ; Reli HERSHKOVITZ, Auteur ; Idan MENASHE, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 16 (2024) Mots-clés : Humans  Autism Spectrum Disorder/genetics/diagnostic imaging  Female  Male  Ultrasonography, Prenatal  Child  Exome Sequencing  Pregnancy  Cross-Sectional Studies  Child, Preschool  Genetic Variation  Genetic Predisposition to Disease  Autism spectrum disorder  Congenital anomalies  Fetal development  Genetic mutations  Prenatal ultrasound  Ultrasonography fetal anomalies  Whole-exome sequencing Index. décimale : PER Périodiques Résumé : BACKGROUND: Recent evidence suggests that certain fetal anomalies detected upon prenatal ultrasound screenings are associated with autism spectrum disorder (ASD). In this cross-sectional study, we aimed to identify genetic variants associated with fetal ultrasound anomalies (UFAs) in children with ASD. METHODS: The study included all children with ASD who are registered in the database of the Azrieli National Center of Autism and Neurodevelopment and for whom both prenatal ultrasound and whole exome sequencing (WES) data were available. We applied our in-house integrative bioinformatics pipeline, AutScore, to these WES data to prioritize rare, gene-disrupting variants (GDVs) probably contributing to ASD susceptibily. Univariate statistics and multivariable regression were used to assess the associations between UFAs and GDVs identified in these children. RESULTS: The study sample comprised 126 children, of whom 43 (34.1%) had at least one UFA detected in the prenatal ultrasound scan. A total of 87 candidate ASD genetic variants were detected in 60 children, with 24 (40%) children carrying multiple variants. Children with UFAs were more likely to have loss-of-function (LoF) mutations (aOR = 2.55, 95%CI: 1.13-5.80). This association was particularly noticeable when children with structural anomalies or children with UFAs in their head and brain scans were compared to children without UFAs (any mutation: aOR = 8.28, 95%CI: 2.29-30.01; LoF: aOR = 5.72, 95%CI: 2.08-15.71 and any mutation: aOR = 6.39, 95%CI: 1.34-30.47; LoF: aOR = 4.50, 95%CI: 1.32-15.35, respectively). GDVs associated with UFAs were enriched in genes highly expressed across all tissues (aOR = 2.76, 95%CI: 1.14-6.68). There was a weak, but significant, correlation between the number of mutations and the number of abnormalities detected in the same children (r = 0.21, P = 0.016). CONCLUSIONS: The results provide valuable insights into the potential genetic basis of prenatal organogenesis abnormalities associated with ASD and shed light on the complex interplay between genetic factors and fetal development. En ligne : https://dx.doi.org/10.1186/s11689-024-09573-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=576

Experimental Tools for the Identification of Specific Genes in Autism Spectrum Disorders and Intellectual Disability / Yiping SHEN  

Public ISBD in Neuronal and Synaptic Dysfunction in Autism Spectrum Disorder and Intellectual Disability / Carlo SALA Titre : Experimental Tools for the Identification of Specific Genes in Autism Spectrum Disorders and Intellectual Disability Type de document : texte imprimé Auteurs : Yiping SHEN, Auteur ; Xiaohong GONG, Auteur Année de publication : 2016 Importance : p.3-12 Langues : Anglais (eng) Mots-clés : Autozygosity mapping  Balanced translocation breakpoint mapping  Candidate gene approach  Copy number variations  Exome sequencing  Linkage analysis  Next-generation sequencing  Positional mapping  Whole-genome sequencing Index. décimale : SCI-D SCI-D - Neurosciences Résumé : Technological advancements for interrogating genomic variants continue to facilitate discoveries of the genetic causes of intellectual disability (ID) and autism spectrum disorders (ASD), both of which are neurodevelopmental disorders known to have a strong genetic basis. In this chapter we discuss the major methods and approaches that have had significant roles in revealing genes and genomic regions associated with ID and ASD. Linkage analysis followed by candidate gene sequencing and positional cloning in patients with genomic rearrangements have been largely responsible for the success of identifying X-linked and autosomal dominant ID/ASD genes. Autozygosity mapping has a unique role in identifying recessive ID/ASD genes. Exome and whole-genome sequencing has provided unprecedented power for genotyping, and the data have provided us with a broader understanding of the association of de novo variants with ID and ASD. We believe that a better understanding of the genetic underpinnings will lead to better diagnosis, management, and treatment for patients with ID and ASD. En ligne : http://dx.doi.org/10.1016/B978-0-12-800109-7.00001-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=301 in Neuronal and Synaptic Dysfunction in Autism Spectrum Disorder and Intellectual Disability / Carlo SALA Experimental Tools for the Identification of Specific Genes in Autism Spectrum Disorders and Intellectual Disability [texte imprimé] / Yiping SHEN, Auteur ; Xiaohong GONG, Auteur . - 2016 . - p.3-12. Langues : Anglais (eng) Mots-clés : Autozygosity mapping  Balanced translocation breakpoint mapping  Candidate gene approach  Copy number variations  Exome sequencing  Linkage analysis  Next-generation sequencing  Positional mapping  Whole-genome sequencing Index. décimale : SCI-D SCI-D - Neurosciences Résumé : Technological advancements for interrogating genomic variants continue to facilitate discoveries of the genetic causes of intellectual disability (ID) and autism spectrum disorders (ASD), both of which are neurodevelopmental disorders known to have a strong genetic basis. In this chapter we discuss the major methods and approaches that have had significant roles in revealing genes and genomic regions associated with ID and ASD. Linkage analysis followed by candidate gene sequencing and positional cloning in patients with genomic rearrangements have been largely responsible for the success of identifying X-linked and autosomal dominant ID/ASD genes. Autozygosity mapping has a unique role in identifying recessive ID/ASD genes. Exome and whole-genome sequencing has provided unprecedented power for genotyping, and the data have provided us with a broader understanding of the association of de novo variants with ID and ASD. We believe that a better understanding of the genetic underpinnings will lead to better diagnosis, management, and treatment for patients with ID and ASD. En ligne : http://dx.doi.org/10.1016/B978-0-12-800109-7.00001-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=301

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De novo variants in CACNA1E found in patients with intellectual disability, developmental regression and social cognition deficit but no seizures / Beryl ROYER-BERTRAND in Molecular Autism, 12 (2021)  

Public ISBD [article]  inMolecular Autism > 12 (2021) . - 69 p. Titre : De novo variants in CACNA1E found in patients with intellectual disability, developmental regression and social cognition deficit but no seizures Type de document : texte imprimé Auteurs : Beryl ROYER-BERTRAND, Auteur ; Marine JEQUIER GYGAX, Auteur ; Katarina CISAROVA, Auteur ; Jill A. ROSENFELD, Auteur ; Jennifer A. BASSETTI, Auteur ; Oana MOLDOVAN, Auteur ; Emily O'HEIR, Auteur ; Lindsay C. BURRAGE, Auteur ; Jake ALLEN, Auteur ; Lisa T. EMRICK, Auteur ; Emma EASTMAN, Auteur ; Camille KUMPS, Auteur ; Safdar ABBAS, Auteur ; Geraldine VAN WINCKEL, Auteur ; Nadia CHABANE, Auteur ; Elaine H. ZACKAI, Auteur ; Sebastien LEBON, Auteur ; Beth KEENA, Auteur ; Elizabeth J. BHOJ, Auteur ; Muhammad UMAIR, Auteur ; Dong LI, Auteur ; Kirsten A. DONALD, Auteur ; Andrea SUPERTI-FURGA, Auteur Article en page(s) : 69 p. Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Cacna1e  Developmental regression  Epilepsy  Exome sequencing  Global developmental delay  Intellectual disability  Neurodevelopmental disorders  Seizures  Topiramate  receives revenue from clinical genetic testing completed at Baylor Genetics  Laboratories. Index. décimale : PER Périodiques Résumé : BACKGROUND: De novo variants in the voltage-gated calcium channel subunit α1 E gene (CACNA1E) have been described as causative of epileptic encephalopathy with contractures, macrocephaly and dyskinesias. METHODS: Following the observation of an index patient with developmental delay and autism spectrum disorder (ASD) without seizures who had a de novo deleterious CACNA1E variant, we screened GeneMatcher for other individuals with CACNA1E variants and neurodevelopmental phenotypes without epilepsy. The spectrum of pathogenic CACNA1E variants was compared to the mutational landscape of variants in the gnomAD control population database. RESULTS: We identified seven unrelated individuals with intellectual disability, developmental regression and ASD-like behavioral profile, and notably without epilepsy, who had de novo heterozygous putatively pathogenic variants in CACNA1E. Age of onset of clinical manifestation, presence or absence of regression and degree of severity were variable, and no clear-cut genotype-phenotype association could be recognized. The analysis of disease-associated variants and their comparison to benign variants from the control population allowed for the identification of regions in the CACNA1E protein that seem to be intolerant to substitutions and thus more likely to harbor pathogenic variants. As in a few reported cases with CACNA1E variants and epilepsy, one patient showed a positive clinical behavioral response to topiramate, a specific calcium channel modulator. LIMITATIONS: The significance of our study is limited by the absence of functional experiments of the effect of identified variants, the small sample size and the lack of systematic ASD assessment in all participants. Moreover, topiramate was given to one patient only and for a short period of time. CONCLUSIONS: Our results indicate that CACNA1E variants may result in neurodevelopmental disorders without epilepsy and expand the mutational and phenotypic spectrum of this gene. CACNA1E deserves to be included in gene panels for non-specific developmental disorders, including ASD, and not limited to patients with seizures, to improve diagnostic recognition and explore the possible efficacy of topiramate. En ligne : http://dx.doi.org/10.1186/s13229-021-00473-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=459 [article] De novo variants in CACNA1E found in patients with intellectual disability, developmental regression and social cognition deficit but no seizures [texte imprimé] / Beryl ROYER-BERTRAND, Auteur ; Marine JEQUIER GYGAX, Auteur ; Katarina CISAROVA, Auteur ; Jill A. ROSENFELD, Auteur ; Jennifer A. BASSETTI, Auteur ; Oana MOLDOVAN, Auteur ; Emily O'HEIR, Auteur ; Lindsay C. BURRAGE, Auteur ; Jake ALLEN, Auteur ; Lisa T. EMRICK, Auteur ; Emma EASTMAN, Auteur ; Camille KUMPS, Auteur ; Safdar ABBAS, Auteur ; Geraldine VAN WINCKEL, Auteur ; Nadia CHABANE, Auteur ; Elaine H. ZACKAI, Auteur ; Sebastien LEBON, Auteur ; Beth KEENA, Auteur ; Elizabeth J. BHOJ, Auteur ; Muhammad UMAIR, Auteur ; Dong LI, Auteur ; Kirsten A. DONALD, Auteur ; Andrea SUPERTI-FURGA, Auteur . - 69 p. Langues : Anglais (eng) in Molecular Autism > 12 (2021) . - 69 p. Mots-clés : Autism spectrum disorder  Cacna1e  Developmental regression  Epilepsy  Exome sequencing  Global developmental delay  Intellectual disability  Neurodevelopmental disorders  Seizures  Topiramate  receives revenue from clinical genetic testing completed at Baylor Genetics  Laboratories. Index. décimale : PER Périodiques Résumé : BACKGROUND: De novo variants in the voltage-gated calcium channel subunit α1 E gene (CACNA1E) have been described as causative of epileptic encephalopathy with contractures, macrocephaly and dyskinesias. METHODS: Following the observation of an index patient with developmental delay and autism spectrum disorder (ASD) without seizures who had a de novo deleterious CACNA1E variant, we screened GeneMatcher for other individuals with CACNA1E variants and neurodevelopmental phenotypes without epilepsy. The spectrum of pathogenic CACNA1E variants was compared to the mutational landscape of variants in the gnomAD control population database. RESULTS: We identified seven unrelated individuals with intellectual disability, developmental regression and ASD-like behavioral profile, and notably without epilepsy, who had de novo heterozygous putatively pathogenic variants in CACNA1E. Age of onset of clinical manifestation, presence or absence of regression and degree of severity were variable, and no clear-cut genotype-phenotype association could be recognized. The analysis of disease-associated variants and their comparison to benign variants from the control population allowed for the identification of regions in the CACNA1E protein that seem to be intolerant to substitutions and thus more likely to harbor pathogenic variants. As in a few reported cases with CACNA1E variants and epilepsy, one patient showed a positive clinical behavioral response to topiramate, a specific calcium channel modulator. LIMITATIONS: The significance of our study is limited by the absence of functional experiments of the effect of identified variants, the small sample size and the lack of systematic ASD assessment in all participants. Moreover, topiramate was given to one patient only and for a short period of time. CONCLUSIONS: Our results indicate that CACNA1E variants may result in neurodevelopmental disorders without epilepsy and expand the mutational and phenotypic spectrum of this gene. CACNA1E deserves to be included in gene panels for non-specific developmental disorders, including ASD, and not limited to patients with seizures, to improve diagnostic recognition and explore the possible efficacy of topiramate. En ligne : http://dx.doi.org/10.1186/s13229-021-00473-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=459

Pleiotropy between language impairment and broader behavioral disorders-an investigation of both common and rare genetic variants / Ron NUDEL in Journal of Neurodevelopmental Disorders, 13 (2021)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 13 (2021) Titre : Pleiotropy between language impairment and broader behavioral disorders-an investigation of both common and rare genetic variants Type de document : texte imprimé Auteurs : Ron NUDEL, Auteur ; Vivek APPADURAI, Auteur ; Alfonso BUIL, Auteur ; Merete NORDENTOFT, Auteur ; Thomas WERGE, Auteur Langues : Anglais (eng) Mots-clés : Attention Deficit Disorder with Hyperactivity/epidemiology  Autism Spectrum Disorder/complications/epidemiology/genetics  Autistic Disorder/complications  Humans  Language  Language Development Disorders/complications/epidemiology/genetics  Attention deficit/hyperactivity disorder  Autism spectrum disorder  Exome sequencing  Polygenic risk score  Schizophrenia  Specific language impairment  biomedical financial interests or potential conflicts of interest. TW states that  he has acted as a lecturer and scientific counselor to H. Lundbeck A/S. Index. décimale : PER Périodiques Résumé : BACKGROUND: Language plays a major role in human behavior. For this reason, neurodevelopmental and psychiatric disorders in which linguistic ability is impaired could have a big impact on the individual's social interaction and general wellbeing. Such disorders tend to have a strong genetic component, but most past studies examined mostly the linguistic overlaps across these disorders; investigations into their genetic overlaps are limited. The aim of this study was to assess the potential genetic overlap between language impairment and broader behavioral disorders employing methods capturing both common and rare genetic variants. METHODS: We employ polygenic risk scores (PRS) trained on specific language impairment (SLI) to evaluate genetic overlap across several disorders in a large case-cohort sample comprising ~13,000 autism spectrum disorder (ASD) cases, including cases of childhood autism and Asperger's syndrome, ~15,000 attention deficit/hyperactivity disorder (ADHD) cases, ~3000 schizophrenia cases, and ~21,000 population controls. We also examine rare variants in SLI/language-related genes in a subset of the sample that was exome-sequenced using the SKAT-O method. RESULTS: We find that there is little evidence for genetic overlap between SLI and ADHD, schizophrenia, and ASD, the latter being in line with results of linguistic analyses in past studies. However, we observe a small, significant genetic overlap between SLI and childhood autism specifically, which we do not observe for SLI and Asperger's syndrome. Moreover, we observe that childhood autism cases have significantly higher SLI-trained PRS compared to Asperger's syndrome cases; these results correspond well to the linguistic profiles of both disorders. Our rare variant analyses provide suggestive evidence of association for specific genes with ASD, childhood autism, and schizophrenia. CONCLUSIONS: Our study provides, for the first time, to our knowledge, genetic evidence for ASD subtypes based on risk variants for language impairment. En ligne : https://dx.doi.org/10.1186/s11689-021-09403-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=574 [article] Pleiotropy between language impairment and broader behavioral disorders-an investigation of both common and rare genetic variants [texte imprimé] / Ron NUDEL, Auteur ; Vivek APPADURAI, Auteur ; Alfonso BUIL, Auteur ; Merete NORDENTOFT, Auteur ; Thomas WERGE, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 13 (2021) Mots-clés : Attention Deficit Disorder with Hyperactivity/epidemiology  Autism Spectrum Disorder/complications/epidemiology/genetics  Autistic Disorder/complications  Humans  Language  Language Development Disorders/complications/epidemiology/genetics  Attention deficit/hyperactivity disorder  Autism spectrum disorder  Exome sequencing  Polygenic risk score  Schizophrenia  Specific language impairment  biomedical financial interests or potential conflicts of interest. TW states that  he has acted as a lecturer and scientific counselor to H. Lundbeck A/S. Index. décimale : PER Périodiques Résumé : BACKGROUND: Language plays a major role in human behavior. For this reason, neurodevelopmental and psychiatric disorders in which linguistic ability is impaired could have a big impact on the individual's social interaction and general wellbeing. Such disorders tend to have a strong genetic component, but most past studies examined mostly the linguistic overlaps across these disorders; investigations into their genetic overlaps are limited. The aim of this study was to assess the potential genetic overlap between language impairment and broader behavioral disorders employing methods capturing both common and rare genetic variants. METHODS: We employ polygenic risk scores (PRS) trained on specific language impairment (SLI) to evaluate genetic overlap across several disorders in a large case-cohort sample comprising ~13,000 autism spectrum disorder (ASD) cases, including cases of childhood autism and Asperger's syndrome, ~15,000 attention deficit/hyperactivity disorder (ADHD) cases, ~3000 schizophrenia cases, and ~21,000 population controls. We also examine rare variants in SLI/language-related genes in a subset of the sample that was exome-sequenced using the SKAT-O method. RESULTS: We find that there is little evidence for genetic overlap between SLI and ADHD, schizophrenia, and ASD, the latter being in line with results of linguistic analyses in past studies. However, we observe a small, significant genetic overlap between SLI and childhood autism specifically, which we do not observe for SLI and Asperger's syndrome. Moreover, we observe that childhood autism cases have significantly higher SLI-trained PRS compared to Asperger's syndrome cases; these results correspond well to the linguistic profiles of both disorders. Our rare variant analyses provide suggestive evidence of association for specific genes with ASD, childhood autism, and schizophrenia. CONCLUSIONS: Our study provides, for the first time, to our knowledge, genetic evidence for ASD subtypes based on risk variants for language impairment. En ligne : https://dx.doi.org/10.1186/s11689-021-09403-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=574