
Keywords: DM، dermatomyositis; Polymyositis; Idiopathic inflammatory myopathiesPM, polymyositis; DM, dermatomyositis; s-IBM, sporadic inclusion body myositis; IMNM, immune-mediated necrotizing myopathies; MAAs, myositis-associated autoantibodies; MSAs, myositis-specific autoantibodies;