The Genetic Architecture of Autism Spectrum Disorders in the Faroe Islands
Autism Spectrum Disorders (ASDs) are a heterogeneous group of neurodevelopmental disorders characterized by deficits in social interaction and communication as well as the presence of repetitive behaviors and restricted interests. ASD affects approximately one in 68 individuals. They usually occur d...
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ftunivparis:oai:HAL:tel-02343507v1 2024-05-19T07:40:02+00:00 The Genetic Architecture of Autism Spectrum Disorders in the Faroe Islands Architecture génétique des troubles du spectre autistique dans les îles Féroé Carton-Buonafine, Coralie Génétique humaine et fonctions cognitives - Human Genetics and Cognitive Functions (GHFC (UMR_3571 / U-Pasteur_1)) Institut Pasteur Paris (IP)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) Université Sorbonne Paris Cité Thomas Bourgeron 2018-07-03 https://theses.hal.science/tel-02343507 https://theses.hal.science/tel-02343507/document https://theses.hal.science/tel-02343507/file/CARTON_BUONAFINE_Coralie_2_complete_20180702.pdf fr fre HAL CCSD NNT: 2018USPCC117 tel-02343507 https://theses.hal.science/tel-02343507 https://theses.hal.science/tel-02343507/document https://theses.hal.science/tel-02343507/file/CARTON_BUONAFINE_Coralie_2_complete_20180702.pdf info:eu-repo/semantics/OpenAccess https://theses.hal.science/tel-02343507 Sciences agricoles. Université Sorbonne Paris Cité, 2018. Français. ⟨NNT : 2018USPCC117⟩ De novo variants Recessive variants Mutations de novo Mutations récessives [SDV.SA]Life Sciences [q-bio]/Agricultural sciences [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology info:eu-repo/semantics/doctoralThesis Theses 2018 ftunivparis 2024-04-23T03:45:10Z Autism Spectrum Disorders (ASDs) are a heterogeneous group of neurodevelopmental disorders characterized by deficits in social interaction and communication as well as the presence of repetitive behaviors and restricted interests. ASD affects approximately one in 68 individuals. They usually occur during the first three years of life but, in some cases, symptoms are recognized later, when social demands increase. There is a strong genetic component to ASD, as indicated by the recurrence risk in families and twin studies. However, the genetic architecture of ASD remains largely unknown because of its extreme heterogeneity. It is very challenging to identify, for each patient, the combination of risk alleles. Our laboratory identified the first genetic pathway associated with ASD – the NLGN-NRXN-SHANK pathway – playing a key role in synaptogenesis during development. There are an increasing number of genes associated with ASDs but few studies have been conducted on epidemiological cohorts and isolated populations. Here, we investigated 357 individuals from the Faroe Islands including 36 patients with ASD, 136 of their relatives and 185 non-ASD controls. Data from SNP array and whole exome sequencing revealed that patients had a higher burden of copy-number variants, higher inbreeding status, higher load of homozygous deleterious mutations, and a higher ASD polygenic risk score compared to controls. We confirmed the role of several ASD-associated loci (NRXN1, ADNP, 22q11 deletion) and identified new truncating (GRIK2, ROBO1, NINL and IMMP2L) or recessive variants (KIRREL3 and CNTNAP2) affecting genes already associated with ASD. We have also identified three novel candidate genes playing key roles in synaptic plasticity (RIMS4, KALRN and PLA2G4A) carrying deleterious de novo mutations in patients without intellectual disability. Overall, for 11% of individuals with ASD, a known genetic cause was identified, for 39% at least one strongly deleterious mutation was identified in a compelling candidate gene and for 50% ... Doctoral or Postdoctoral Thesis Faroe Islands Îles Féroé Université de Paris: Portail HAL |
institution |
Open Polar |
collection |
Université de Paris: Portail HAL |
op_collection_id |
ftunivparis |
language |
French |
topic |
De novo variants Recessive variants Mutations de novo Mutations récessives [SDV.SA]Life Sciences [q-bio]/Agricultural sciences [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology |
spellingShingle |
De novo variants Recessive variants Mutations de novo Mutations récessives [SDV.SA]Life Sciences [q-bio]/Agricultural sciences [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology Carton-Buonafine, Coralie The Genetic Architecture of Autism Spectrum Disorders in the Faroe Islands |
topic_facet |
De novo variants Recessive variants Mutations de novo Mutations récessives [SDV.SA]Life Sciences [q-bio]/Agricultural sciences [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology |
description |
Autism Spectrum Disorders (ASDs) are a heterogeneous group of neurodevelopmental disorders characterized by deficits in social interaction and communication as well as the presence of repetitive behaviors and restricted interests. ASD affects approximately one in 68 individuals. They usually occur during the first three years of life but, in some cases, symptoms are recognized later, when social demands increase. There is a strong genetic component to ASD, as indicated by the recurrence risk in families and twin studies. However, the genetic architecture of ASD remains largely unknown because of its extreme heterogeneity. It is very challenging to identify, for each patient, the combination of risk alleles. Our laboratory identified the first genetic pathway associated with ASD – the NLGN-NRXN-SHANK pathway – playing a key role in synaptogenesis during development. There are an increasing number of genes associated with ASDs but few studies have been conducted on epidemiological cohorts and isolated populations. Here, we investigated 357 individuals from the Faroe Islands including 36 patients with ASD, 136 of their relatives and 185 non-ASD controls. Data from SNP array and whole exome sequencing revealed that patients had a higher burden of copy-number variants, higher inbreeding status, higher load of homozygous deleterious mutations, and a higher ASD polygenic risk score compared to controls. We confirmed the role of several ASD-associated loci (NRXN1, ADNP, 22q11 deletion) and identified new truncating (GRIK2, ROBO1, NINL and IMMP2L) or recessive variants (KIRREL3 and CNTNAP2) affecting genes already associated with ASD. We have also identified three novel candidate genes playing key roles in synaptic plasticity (RIMS4, KALRN and PLA2G4A) carrying deleterious de novo mutations in patients without intellectual disability. Overall, for 11% of individuals with ASD, a known genetic cause was identified, for 39% at least one strongly deleterious mutation was identified in a compelling candidate gene and for 50% ... |
author2 |
Génétique humaine et fonctions cognitives - Human Genetics and Cognitive Functions (GHFC (UMR_3571 / U-Pasteur_1)) Institut Pasteur Paris (IP)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) Université Sorbonne Paris Cité Thomas Bourgeron |
format |
Doctoral or Postdoctoral Thesis |
author |
Carton-Buonafine, Coralie |
author_facet |
Carton-Buonafine, Coralie |
author_sort |
Carton-Buonafine, Coralie |
title |
The Genetic Architecture of Autism Spectrum Disorders in the Faroe Islands |
title_short |
The Genetic Architecture of Autism Spectrum Disorders in the Faroe Islands |
title_full |
The Genetic Architecture of Autism Spectrum Disorders in the Faroe Islands |
title_fullStr |
The Genetic Architecture of Autism Spectrum Disorders in the Faroe Islands |
title_full_unstemmed |
The Genetic Architecture of Autism Spectrum Disorders in the Faroe Islands |
title_sort |
genetic architecture of autism spectrum disorders in the faroe islands |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://theses.hal.science/tel-02343507 https://theses.hal.science/tel-02343507/document https://theses.hal.science/tel-02343507/file/CARTON_BUONAFINE_Coralie_2_complete_20180702.pdf |
genre |
Faroe Islands Îles Féroé |
genre_facet |
Faroe Islands Îles Féroé |
op_source |
https://theses.hal.science/tel-02343507 Sciences agricoles. Université Sorbonne Paris Cité, 2018. Français. ⟨NNT : 2018USPCC117⟩ |
op_relation |
NNT: 2018USPCC117 tel-02343507 https://theses.hal.science/tel-02343507 https://theses.hal.science/tel-02343507/document https://theses.hal.science/tel-02343507/file/CARTON_BUONAFINE_Coralie_2_complete_20180702.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1799479615796805632 |