Journal
CLINICAL GENETICS
Volume 94, Issue 1, Pages 174-178Publisher
WILEY
DOI: 10.1111/cge.13259
Keywords
clinical sequencing; CSER; data sharing; developmental delay; intellectual disability; reanalysis; VUS
Categories
Funding
- National Human Genome Research Institute [UM1HG007301]
- NATIONAL HUMAN GENOME RESEARCH INSTITUTE [UM1HG007301, U01HG007301] Funding Source: NIH RePORTER
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As genomic sequencing expands, so does our knowledge of the link between genetic variation and disease. Deeper catalogs of variant frequencies improve identification of benign variants, while sequencing affected individuals reveals disease-associated variation. Accumulation of human genetic data thus makes reanalysis a means to maximize the benefits of clinical sequencing. We implemented pipelines to systematically reassess sequencing data from 494 individuals with developmental disability. Reanalysis yielded pathogenic or likely pathogenic (P/LP) variants that were not initially reported in 23 individuals, 6 described here, comprising a 16% increase in P/LP yield. We also downgraded 3 LP and 6 variants of uncertain significance (VUS) due to updated population frequency data. The likelihood of identifying a new P/LP variant increased over time, as similar to 22% of individuals who did not receive a P/LP variant at their original analysis subsequently did after 3 years. We show here that reanalysis and data sharing increase the diagnostic yield and accuracy of clinical sequencing.
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