作者: Jack A. Kosmicki , Kaitlin E. Samocha , Daniel P. Howrigan , Stephan J. Sanders , Kamil Slowikowski
DOI: 10.1101/052886
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摘要: Recent research has established the significant role of newly arising (de novo) variation in neurodevelopmental disorders. Using aggregated data from 5603 families affected by ASD, intellectual disability (ID), or developmental delay (DD), we show that overall ~1/3 de novo variants are independently observed as standing Exome Aggregation Consortium's (ExAC) cohort 60,706 adults without severe disease, and these do not contribute substantively to risk. We further use a loss-of-function intolerance metric derived ExAC identify small subset genes contain entire signal associated protein truncating (PTVs) disorders (ASD: rate ratio (RR) = 3.24, P < 10-16; ID/DD: RR 6.70, 10-38). These same carry moderate excess PTVs inherited individuals with ASD their unaffected parents (RR 1.16, 0.00985), larger 404 cases 3654 controls (OR 2.66; 6.34 x 10-19), again no association seen outside genes. findings illustrate importance population-based cohorts reference samples for interpretation candidate pathogenic variants, even analysis variation.