Out of the genes whose mutations cause myofibrillar myopathies or protein aggregation myopathies (n = 16) [23], [S28] (Table S8, column R; Table S8, 2nd sheet, column R), only two candidates, namely, Dnajb6 and Bag3, were up‐regulated on the protein level in both the heterozygous and homozygous phenotypes. Here, BAG3 is linked to myopathy.