MYOM2 and Miyoshi myopathy: The diagnosis of the IgG-κ type MM was based on (1) elevated serologic IgG (> 3000 mg/dL), (2) paraprotein band of the r-globulin level of 5140 mg/dL, β-globulin of 1040 mg/dL and M-protein of 3020 mg/dL by IFE, (3) increased numbers of plasma cells (20%–25%) in bone marrow biopsy, and (4) a kappa/lambda ratio of 154.89.