MYOM2 and Miyoshi myopathy: al. who introduced sBCMA as a biomarker that can control and predict the results of MM patients and by examining 243 patients, the level of this protein measured by ELISA method in smoldering MM and active MM was high, in addition, sBCMA levels are correlated with plasma cell ratio at biopsy, patient's clinical status, and M protein [25, 83, 84].