SDHA and Miyoshi myopathy: When SDHA was overexpressed in H929 and U266 cells, the combination index (CI) of chidamide and bortezomib (Figures 4C,D, left panel) or lenalidomide (Figures 4C,D, right panel) was decreased compared with nc MM cells at the same inhibition rate (FA) level, which indicated an enhanced synergistic effect of drugs.