HSPB7 and familial dilated cardiomyopathy: In the second GWAS of DCM, SNPs in the HSPB7 locus had weak association signals (rs1763610, P = 0.002; and rs4661346, P = 0.024) [73], but, in a separate association study of a subset of patients who featured in the replication stage of this GWAS, a stronger association was detected (rs1739843, P = 1.06 × 10–6) [41].