Studies showed that BMSCs were the main product source of BAFF.13, 18Because myeloid lineage cell monocytes including MΦs, dendritic cells were originally found to express BAFF,36, 37 and MΦs are important components of the BMSCs of MM that support plasma cell survival and induce chemotherapy resistance.32 Therefore, we anticipated a role of BAFF in the adhesion of MΦs and MM cells. The gene discussed is TNFSF13B; the disease is Miyoshi myopathy.