IL31 and familial dilated cardiomyopathy: The IL-31 mRNA results for CA/AA genotypes in DCM (n = 21) and controls (n = 22) were 0.087 (0.044–0.223) and 0.038 (0.021–0.050), and those for CC genotype in DCM (n = 20) and controls (n = 27) were 0.065 (0.044–0.124) and 0.033 (0.018–0.065).