These results indicate that in the muscles from CM patients: (i) NFATC2 and NFATC3 levels do not correlate with the expression of specific slow twitch muscle genes and (ii) the expression level of different MEF2 isoforms increases in muscles from XL-MTM and AD nemaline myopathy patients. This evidence concerns the gene NFATC3 and nemaline myopathy.