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Wiel, Laurens; Hampstead, Juliet E.; Venselaar, Hanka; Vissers, Lisenka E.L.M.; Brunner, Han G.; Pfundt, Rolph; Vriend, Gerrit; Veltman, Joris A.; Gilissen, Christian
American journal of human genetics, 01/2023, Letnik: 110, Številka: 1Journal Article
Variant interpretation remains a major challenge in medical genetics. We developed Meta-Domain HotSpot (MDHS) to identify mutational hotspots across homologous protein domains. We applied MDHS to a dataset of 45,221 de novo mutations (DNMs) from 31,058 individuals with neurodevelopmental disorders (NDDs) and identified three significantly enriched missense DNM hotspots in the ion transport protein domain family (PF00520). The 37 unique missense DNMs that drive enrichment affect 25 genes, 19 of which were previously associated with NDDs. 3D protein structure modeling supports the hypothesis of function-altering effects of these mutations. Hotspot genes have a unique expression pattern in tissue, and we used this pattern alongside in silico predictors and population constraint information to identify candidate NDD-associated genes. We also propose a lenient version of our method, which identifies 32 hotspot positions across 16 different protein domains. These positions are enriched for likely pathogenic variation in clinical databases and DNMs in other genetic disorders. Display omitted We developed MDHS which utilizes homologous protein domains to identify domain-based variant hotspots. Applying MDHS on de novo mutations from 31,058 patients with neurodevelopmental disorders (NDDs) identified three missense hotspots across 25 genes, of which 19 genes were previously associated with NDD. The identified missense mutations at the hotspots are suggested to alter function.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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