Abstract
The QRS interval, from the beginning of the Q wave to the end of the S wave on an electrocardiogram, reflects ventricular depolarization and conduction time and is a risk factor for mortality, sudden death and heart failure. We performed a genomewide association meta-analysis in 40,407 individuals of European descent from 14 studies, with further genotyping in 7,170 additional Europeans, and we identified 22 loci associated with QRS duration ( P < 5 x 10(-8)). These loci map in or near genes in pathways with established roles in ventricular conduction such as sodium channels, transcription factors and calcium-handling proteins, but also point to previously unidentified biologic processes, such as kinase inhibitors and genes related to tumorigenesis. We demonstrate that SCN10A, a candidate gene at the most significantly associated locus in this study, is expressed in the mouse ventricular conduction system, and treatment with a selective SCN10A blocker prolongs QRS duration. These findings extend our current knowledge of ventricular depolarization and conduction.
Original language | English |
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Pages (from-to) | 1068-1076 |
Number of pages | 11 |
Journal | Nature Genetics |
Volume | 42 |
Issue number | 12 |
DOIs | |
Publication status | Published - Dec 2010 |
Keywords
- GENOME-WIDE ASSOCIATION
- QT INTERVAL DURATION
- RICH REPEAT PROTEIN
- HEART-RATE
- TRANSCRIPTION FACTOR
- GENE-EXPRESSION
- PR INTERVAL
- SYSTEM
- DISEASE
- ELECTROCARDIOGRAM