Mitochondrial DNA variants in genomic data: diagnostic uplifts and predictive implications.

Abstract

A broad spectrum of rare disease presentations can now be investigated by analysing mitochondrial DNA (mtDNA) variants from whole-genome sequencing (WGS) data. However, mtDNA mutations may cause unanticipated, extended phenotypes and have reproductive implications. We recommend that these be considered by patients and clinicians before embarking on WGS. Variants in mitochondrial DNA (mtDNA), which are detectable in whole-genome sequencing (WGS) data, can cause a wide range of phenotypes of varying severity. The authors call for a wider debate on the communication of uncertainties around mtDNA variants and the risks versus benefits of screening.