Vanderbilt University Medical Center Sep 27 2024 An innovative analysis of shared segments within the genome -; an indication of distant "relatedness" -; has identified undiagnosed cases of Long QT syndrome, a rare disorder that can lead to abnormal heart rhythms, fainting and sudden cardiac death.  The findings, reported in the journal  Nature Communications , illustrate the feasibility of the new approach developed by researchers at Vanderbilt University Medical Center to detect undiagnosed