Moreover, in the mRNA‐seq we found aldehyde dehydrogenases (ALDH1L2, ALDH1B1, ALDH4A1, and ALDH18A1), enzymes involved in lipid peroxidation, and some antioxidant enzymes (CBR3, CYB5R3, ETHE1, PRXL2A, and SQOR), among the DEGs between IBM and CTL fibroblasts. This evidence concerns the gene ALDH18A1 and inclusion body myositis.