MKI67 and neoplasm: As shown in Table 2, CDC20 expression level was significantly correlated with Ki-67 expression (P = 0.014), LDH serum level (P = 0.007), tumor stage (P = 0.040), MIPI score (P = 0.008), number of involved lymph node areas (P = 0.036), bone marrow involvement (P = 0.015) and treatment response (P = 0.002), but was not significantly associated with age, gender, B symptoms, pathological type, ECOG score, white blood cell count and β2-MG serum level.