In patients with DM, serum resistin levels significantly correlated with MYOACT score (r = 0.667, P = 0.001), creatine kinase (r = 0.739, P = 0.001) and myoglobin levels (r = 0.791, P = 0.0003) and showed a trend towards correlation with CRP levels (r = 0.447, P = 0.067). The gene discussed is RETN; the disease is dermatomyositis.