The patient was a heterozygous carrier of missense VUS in collagen type VI alpha 3 chain (COL6A3) gene (c.1214T>C), a reported biomarker of DCM [29], and fukutin (FKTN) gene (c.-7C>G), associated with both DCM and myopathy [29,30]. This evidence concerns the gene COL6A3 and familial dilated cardiomyopathy.