CCL1 and dermatomyositis: At baseline, serum levels of CCL2, CCL4, TNFR2, CXCL13, IL-1ra, IL-1b, CCL1, CXCL11, and CCL3 were significantly higher in patients with DM than HCs (adjusted P-value < 0.05; FC > 1.2 or < 0.83; Table 3, Figure 2, and Supplementary Figures 1A–I).