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    A set of regulatory genes co-expressed in embryonic human brain is implicated in disrupted speech development

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    Author
    Eising, E; Carrion-Castillo, A; Vino, A; Strand, EA; Jakielski, KJ; Scerri, TS; Hildebrand, MS; Webster, R; Ma, A; Mazoyer, B; ...
    Date
    2019-07-01
    Source Title
    Molecular Psychiatry
    Publisher
    NATURE PUBLISHING GROUP
    University of Melbourne Author/s
    Scerri, Thomas; Hildebrand, Michael; Scheffer, Ingrid; Morgan, Angela; Bahlo, Melanie
    Affiliation
    Medical Biology (W.E.H.I.)
    Medicine and Radiology
    Audiology and Speech Pathology
    School of Mathematics and Statistics
    Metadata
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    Document Type
    Journal Article
    Citations
    Eising, E., Carrion-Castillo, A., Vino, A., Strand, E. A., Jakielski, K. J., Scerri, T. S., Hildebrand, M. S., Webster, R., Ma, A., Mazoyer, B., Francks, C., Bahlo, M., Scheffer, I. E., Morgan, A. T., Shriberg, L. D. & Fisher, S. E. (2019). A set of regulatory genes co-expressed in embryonic human brain is implicated in disrupted speech development. MOLECULAR PSYCHIATRY, 24 (7), pp.1065-1078. https://doi.org/10.1038/s41380-018-0020-x.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/255908
    DOI
    10.1038/s41380-018-0020-x
    Abstract
    Genetic investigations of people with impaired development of spoken language provide windows into key aspects of human biology. Over 15 years after FOXP2 was identified, most speech and language impairments remain unexplained at the molecular level. We sequenced whole genomes of nineteen unrelated individuals diagnosed with childhood apraxia of speech, a rare disorder enriched for causative mutations of large effect. Where DNA was available from unaffected parents, we discovered de novo mutations, implicating genes, including CHD3, SETD1A and WDR5. In other probands, we identified novel loss-of-function variants affecting KAT6A, SETBP1, ZFHX4, TNRC6B and MKL2, regulatory genes with links to neurodevelopment. Several of the new candidates interact with each other or with known speech-related genes. Moreover, they show significant clustering within a single co-expression module of genes highly expressed during early human brain development. This study highlights gene regulatory pathways in the developing brain that may contribute to acquisition of proficient speech.

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