IGFBP1 and dermatomyositis: The IGFBP-1 level was positively correlated with constitutional (r = 0.472, p < 0.001), cutaneous (r = 0.270, p = 0.031), gastrointestinal (r = 0.415, p = 0.001), cardiovascular (r = 0.367, p = 0.030), muscle (r = 0.406, p = 0.001), and global (r = 0.584, p < 0.001) disease activity in all DM patients.