Erlacher et al. measured cardiac troponin T (cTnT), cardiac troponin I (cTnI), myosin heavy chains, myoglobin, creatine kinase (CK), and creatine kinase isoenzyme MB (CKMB) from 15 DM patients without any clinical evidence for acute cardiac affection. Here, TNNI3 is linked to dermatomyositis.