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Genome-wide analysis of gene dosage in 24,092 individuals estimates that 10,000 genes modulate cognitive ability
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In: ISSN: 1359-4184 ; EISSN: 1476-5578 ; Molecular Psychiatry ; https://hal-pasteur.archives-ouvertes.fr/pasteur-03325369 ; Molecular Psychiatry, Nature Publishing Group, 2021, ⟨10.1038/s41380-020-00985-z⟩ (2021)
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Effect Sizes of Deletions and Duplications on Autism Risk Across the Genome
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Douard, Elise; Zeribi, Abderrahim; Schramm, Catherine; Tamer, Petra; Loum, Mor Absa; Nowak, Sabrina; Saci, Zohra; Lord, Marie-Pier; Rodríguez-Herreros, Borja; Jean-Louis, Martineau; Moreau, Clara; Loth, Eva; Schumann, Gunter; Pausova, Zdenka; Elsabbagh, Mayada; Almasy, Laura; Glahn, David,; Bourgeron, Thomas; Labbe, Aurélie; Paus, Tomas; Mottron, Laurent; Greenwood, Celia,; Huguet, Guillaume; Jacquemont, Sébastien
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In: ISSN: 0002-953X ; EISSN: 1535-7228 ; American Journal of Psychiatry ; https://hal-pasteur.archives-ouvertes.fr/pasteur-03325371 ; American Journal of Psychiatry, American Psychiatric Publishing, 2021, 178 (1), pp.87-98. ⟨10.1176/appi.ajp.2020.19080834⟩ (2021)
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Abstract:
International audience ; Objective:Deleterious copy number variants (CNVs) are identified in up to 20% of individuals with autism. However, levels of autism risk conferred by most rare CNVs remain unknown. The authors recently developed statistical models to estimate the effect size on IQ of all CNVs, including undocumented ones. In this study, the authors extended this model to autism susceptibility.Methods:The authors identified CNVs in two autism populations (Simons Simplex Collection and MSSNG) and two unselected populations (IMAGEN and Saguenay Youth Study). Statistical models were used to test nine quantitative variables associated with genes encompassed in CNVs to explain their effects on IQ, autism susceptibility, and behavioral domains.Results:The “probability of being loss-of-function intolerant” (pLI) best explains the effect of CNVs on IQ and autism risk. Deleting 1 point of pLI decreases IQ by 2.6 points in autism and unselected populations. The effect of duplications on IQ is threefold smaller. Autism susceptibility increases when deleting or duplicating any point of pLI. This is true for individuals with high or low IQ and after removing de novo and known recurrent neuropsychiatric CNVs. When CNV effects on IQ are accounted for, autism susceptibility remains mostly unchanged for duplications but decreases for deletions. Model estimates for autism risk overlap with previously published observations. Deletions and duplications differentially affect social communication, behavior, and phonological memory, whereas both equally affect motor skills.Conclusions:Autism risk conferred by duplications is less influenced by IQ compared with deletions. The model applied in this study, trained on CNVs encompassing >4,500 genes, suggests highly polygenic properties of gene dosage with respect to autism risk and IQ loss. These models will help to interpret CNVs identified in the clinic.
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Keyword:
[SCCO.NEUR]Cognitive science/Neuroscience; Autism Spectrum Disorder; Copy Number Variants; IQ; MESH: Adolescent; MESH: Adult; MESH: Autistic Disorder; MESH: Case-Control Studies; MESH: Child; MESH: DNA Copy Number Variations; MESH: Female; MESH: Gene Deletion; MESH: Gene Duplication; MESH: Genetic Predisposition to Disease; MESH: Genome; MESH: Humans; MESH: Intelligence; MESH: Male; MESH: Risk Factors
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URL: https://doi.org/10.1176/appi.ajp.2020.19080834
https://hal-pasteur.archives-ouvertes.fr/pasteur-03325371
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The role of the striatum in linguistic selection: Evidence from Huntington's disease and computational modeling
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In: ISSN: 0010-9452 ; Cortex ; https://hal.archives-ouvertes.fr/hal-02326550 ; Cortex, Elsevier, 2018, 109, pp.189-204. ⟨10.1016/j.cortex.2018.08.031⟩ (2018)
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COMT Val158Met Polymorphism Modulates Huntington's Disease Progression
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In: ISSN: 1932-6203 ; EISSN: 1932-6203 ; PLoS ONE ; https://hal.archives-ouvertes.fr/hal-02326563 ; PLoS ONE, Public Library of Science, 2016, 11 (9), pp.e0161106. ⟨10.1371/journal.pone.0161106⟩ (2016)
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