With regard to the expression of mir-6855-5p, we describe here for the first time the relationship between BAG3-mutation carriers with DCM and systolic (r = −6059, P<0.006), diastolic blood pressure (r = −4493, P<0.05), aortic diameter (r = −0.47179, P<0.003), left atrium length (r = −0.73897, P<0.0002), and left atrium area (r = 0.44648, P<0.05). This evidence concerns the gene BAG3 and familial dilated cardiomyopathy.