MYH6 and familial dilated cardiomyopathy: HCM lines showed an increase in cell size (156 ± 85%, n = 15; DCM +/−), in MYH7 gene expression (or the ratio of MYH7/MYH6 (500 ± 547%, n = 8; DCM +/− or reduction) and nuclear accumulation of the transcription factor NFAT (175 ± 65%, n = 3; DCM not determined).