We address the challenge of detecting the contribution of noncoding mutations to disease with a deep-learning-based framework that predicts the specific regulatory effects and the deleterious impact of genetic variants. Applying this framework to 1,790 autism spectrum disorder (ASD) simplex families reveals a role in disease for noncoding mutations—ASD probands harbor both transcriptional- and post-transcriptional-regulation-disrupting de novo mutations of significantly higher functional impact than those in unaffected siblings. Further analysis suggests involvement of noncoding mutations in synaptic transmission and neuronal development and, taken together with previous studies, reveals a convergent genetic landscape of coding and noncoding mutations in ASD. We demonstrate that sequences carrying prioritized mutations identified in probands possess allele-specific regulatory activity, and we highlight a link between noncoding mutations and heterogeneity in the IQ of ASD probands. Our predictive genomics framework illuminates the role of noncoding mutations in ASD and prioritizes mutations with high impact for further study, and is broadly applicable to complex human diseases.
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The code used in this study is available from https://hb.flatironinstitute.org/asdbrowser/help.
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We are grateful to the families participating in the SFARI SSC. This work is supported by NIH grants R01HG005998, U54HL117798 and R01GM071966, HHS grant HHSN272201000054C and Simons Foundation grant 395506 to O.G.T.; NIH grants 1UM1HG008901, NS034389, NS081706 and NS097404 and Simons Foundation grant SFARI 240432 to R.B.D.; and STARR Cancer Consortium Award I10-0056 to C.Y.P. and R.B.D. O.G.T. is a senior fellow of the Genetic Networks program of the Canadian Institute for Advanced Research (CIFAR). R.B.D. is an Investigator of the Howard Hughes Medical Institute. The authors acknowledge all members of the Troyanskaya and Darnell laboratory for helpful discussions. We also thank the SFARI, Simons Foundation and Flatiron Institute, in particular N. Volfovsky and M. Benedetti. We are pleased to acknowledge that a substantial portion of the work in this paper was performed at the TIGRESS high-performance computer center at Princeton University, which is jointly supported by the Princeton Institute for Computational Science and Engineering and the Princeton University Office of Information Technology’s Research Computing department. O.G.T. is a CIFAR fellow.
Supplementary Note and Supplementary Figures 1–16
All de novo mutations identified from the WGS cohort with predicted disease impact scores
Genomic variant set analysis of mutational burden for transcriptional and post-transcriptional disruptions
NDEA significance levels of proband excess for all genes
NDEA significance levels of proband excess for all gene sets
Cluster-specific gene set enrichment for top NDEA significant genes
Genomic sequences tested in luciferase assays (plasmid backbone pGL4.23)
List of chromatin profiles used in this study
List of RBP profiles used in this study