Next, we analyzed the differences in SRRM2 expression on normal plasma cells in the reactive plasmacytosis group and in the CR subgroup of MM and abnormal plasma cells in other subgroups of MM and other plasma cell dyscrasias (Fig. 6A) and found that SRRM2 expression was significantly elevated on abnormal plasma cells. This evidence concerns the gene SRRM2 and Miyoshi myopathy.