MURC was immunodetected after Western blotting in the TE of FSHD and control myotubes (Fig. 6), and in agreement with the proteomic data, densitometry analysis indicated a 0.5-fold reduction in its relative expression in dFSHD12 and aFSHD3 myotubes. Here, CAVIN4 is linked to facioscapulohumeral muscular dystrophy.