It is interesting to note that female carriers do demonstrate a mosaic pattern of utrophin expression, with the ratio between dystrophin and utrophin potentially impacting the extent of DCM in this class of patients69, though murine carrier models have shown comparable cardiac compliance to that of WT70 suggesting that mosaics are less affected compared to homozygous patients. Here, UTRN is linked to familial dilated cardiomyopathy.