Comparing MMD patient and control plasma samples, C-X-C motif chemokine 9 (CXCL9), Tumor necrosis factor receptor superfamily member 9 (TNFRSF9), and TNF-related activation-induced cytokine (TNFSF11) showed significant concentration differences (Figure 4B–D). Here, TNFSF11 is linked to multiminicore myopathy.