NOS1AP and Schnyder corneal dystrophy: Though not directly ascertained in our sample, rs4292933 is not in LD with the previously reported NOS1AP risk alleles for QT interval (rs10494366, r2 = 0.091)[13,14] and those SNPs with reported association with SCD (rs12567209 [r2 = 0.245], rs16847548 [r2 = 0.096])[17] in the Caucasian populations sampled in public databases.