In the context of patients with a definite diagnosis of sarcoidosis, authors found the presence of sarcoidosis-specific autoantibodies against macrophage-associated antigens, including major facilitator superfamily domain containing 6 (MFSD6) and myocyte enhancer factor 2D (MEF2D); they also found autoantibodies against antigens notoriously highly expressed in the granulomatous tissue of patients with sarcoidosis, such as vonWillebrand factor (vWF) (16) and ferritin heavy chain 1 (FTH1) (17). This evidence concerns the gene MEF2D and sarcoidosis.