CXCL10 was decreased in CD138+ plasma cells obtained from MM patients compared to those from HD or MGUS patients (Figure 2H; Figure S3J, Supporting Information), and was positively correlated with the OS and PFS of MM patients, especially bortezomib‐treated patients (Figure 2I; Figure S3K, Supporting Information). The gene discussed is SDC1; the disease is Miyoshi myopathy.