Rs12567209

rs10494366, rs4657139 and rs16847548 were significantly associated with adjusted QT interval in whites. relative hazard of SCD associated with each C allele at rs16847548 was 1.31. rs12567209 was also independently associated with SCD in whites (relative hazard 0.57, 95% confidence interval 0.39 to 0.83, P=0.003). No significant associations observed in blacks.

Multiple independent genetic factors at NOS1AP modulate the QT interval in a multi-ethnic population.

Genetic variation in NOS1AP is associated with sudden cardiac death: evidence from the Rotterdam Study.