“…As mentioned above, laboratory features including β2M, LDH, Hb, calcium, C-reactive protein (CRP), albumin, and sFLC were independent prognostic factors for MM patients. 11,23 Event-free survival (EFS) and OS were significantly shorter in MM patients with β2M > 4 mg/L and LDH > 190 U/L. 14,24 For patients undergoing PET/CT scan, with the cut-off values of β2M and LDH at 3.5 mg/L and 250 U/L, respectively, our data confirmed that the MM patients with abnormal levels of β2M and LDH also experienced shorter OS (Figure 2 and LDH alone had 100% specificity for predicting the number of FL.…”