ECHS1 and familial dilated cardiomyopathy: After finding this association, we stratified by genotype and found that the ECHS1:rs10466126 (G/G) recessive genotype is associated with DCM (p = 0.02496) and not the ECHS1:rs10466126 (A/G) heterozygote genotype (p = 0.209) (Table 2).