New PR interval genetic associations in the CVDKP
We've added a new dataset to the Cardiovascular Disease Knowledge Portal: PR interval exome chip analysis, with genetic associations from nearly 93,000 individuals. This study was published yesterday in Circulation: Genomics and Precision Medicine ( Lin, H., et al., Circ Genom Precis Med. 2018;11:e002037 ). The cardiac conduction system is critical to proper heart function, and abnormalities are associated with harmful conditions such as atrial fibrillation. One measure of cardiac conduction is the duration of the PR interval, defined as the time between the onset of the P wave and the onset of the QRS interval in an electrocardiogram. In this study, the authors measured the PR interval, in milliseconds, for 83,367 participants of European ancestry and 9,436 participants of African-American ancestry. They genotyped each participant using the Illumina Human Exome BeadChip, analyzed variant associations with PR interval, and performed meta-analyses. Common and low-frequency vari