1. Exome sequencing of 18,994 ethnically diverse patients with suspected rare Mendelian disorders
- Author
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Heonjong Han, Go Hun Seo, Seong-In Hyun, Kisang Kwon, Seung Woo Ryu, Rin Khang, Eugene Lee, JiHye Kim, Yongjun Song, Won Chan Jeong, Joohyun Han, Dong-wook Kim, Soyeon Yang, Sohyun Lee, Sohyun Jang, Jungsul Lee, and Hane Lee
- Subjects
Medicine ,Genetics ,QH426-470 - Abstract
Abstract We investigated the effectiveness of exome sequencing (ES) in diagnosing ethnically diverse patients with rare genetic disorders. A total of 18,994 patients referred to a single reference laboratory for ES between 2020 and 2022 were studied for the diagnostic rate and factors influencing the diagnostic rate. The overall diagnostic rate was 31.8%. Dermatological disorders, skeletal disorders, and neurodevelopmental disorders disease categories, early age-of-onset, presence of consanguinity, and the presence of parental sequencing data were found to be correlated with a higher diagnostic rate. Nearly 68K variants were identified in our dataset at a higher frequency than that observed in gnomAD 4.0. Of these, 507 variants could be classified as likely benign, representing 0.04% of non-benign variants in ClinVar (507/1,433,904) and 0.20% of the non-benign ClinVar variants observed at least once in our cohort (507/276,777). The overall diagnostic rate is comparable to that observed in other large cohort studies with less diverse ethnic backgrounds.
- Published
- 2025
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