Although we could find distinct SNPs/mutations in HCM and DCM, interestingly, certain common genetic variations were found in exons 7, 12, 19 and 20 of MYH7 gene in both the diseased phenotypes, where three of the genotypes were heterozygotes in HCM and all the genotypes were homozygotes in DCM. The gene discussed is MYH7; the disease is familial dilated cardiomyopathy.