Hemoglobin (Hb), thrombocytes (PLT), albumin (ALB), lactate dehydrogenase (LDH), creatinine (Cr), β2‐microglobulin (β2‐MG), C‐reactive protein (CRP), immune globulin IgG (IgG), immune globulin (IgG+ IgA+ IgM), and light chain (κ+λ) in serum (Ig/L−κ+λ) were analyzed among MM and MUGS patients (Table 2). Here, GSTM1 is linked to Miyoshi myopathy.