The expression levels of the chaperones were measured in muscle tissue from controls and five hereditary myopathies with mutations in CAPN3 (LGMD2A), FLNC (MFM-filaminopathy), DMD (Duchenne muscular dystrophy), MYOT (MFM-myotilinopathy) or VCP (IBMPFD). Here, CAPN3 is linked to Duchenne muscular dystrophy.