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    Rates, Distribution, and Implications of Post-zygotic Mosaic Mutations in Autism Spectrum Disorder

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    204-2017.34 Mohammed Uddin (654.5Kb)
    Date
    2017-09
    Author
    Uddin, Mohammed
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    Abstract
    Abstract: We systematically analyzed post-zygotic mutations (PZMs) in whole-exome sequences from the largest collection of trios (5,947) with autism spectrum disorder (ASD) available, including 282 unpublished trios, and performed re-sequencing using multiple independent technologies. We identified 7.5% of de novo mutations as PZMs, with 83.3% of these PZMs not discovered in previous studies. Damaging, non-synonymous PZMs within critical exons of prenatally-expressed genes were more common in ASD probands than controls (P<1×10-6), and genes carrying these PZMs were enriched for expression in the amygdala (P=5.4×10-3). Two genes (KLF16 and MSANTD2) were significantly enriched for PZMs genome-wide, and other PZMs involved genes (SCN2A, HNRNPU, SMARCA4) known to cause ASD or other neurodevelopmental disorders. PZMs constitute a significant proportion of de novo mutations and contribute importantly to ASD risk.
    URI
    https://repository.mbru.ac.ae/handle/1/207
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