Journal of Jilin University Medicine Edition ›› 2016, Vol. 42 ›› Issue (02): 283-289.doi: 10.13481/j.1671-587x.20160218

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Relationship between CD56 antigen expression in leukemia cells and prognosis of patients with acute myeloid leukemia

LI Qian1,2, LI Jingao3, ZHOU Maohua4, LIAO Pengjun2, PENG Qi2, CHEN Jing5, CHEN Shaoxian5, WEI Shanshan2, HUANG Huiting2, SHE Miaorong2   

  1. 1. Department of Internal Medicine, Second Clinical Medical College, Southern Medical University, Guangzhou 510515, China;
    2. Department of Hematology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China;
    3. Department of Nephrology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China;
    4. Department of Laboratory Medicine, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China;
    5. Department of Pathophysiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
  • Received:2015-09-24 Published:2016-03-31

Abstract:

Objective: To investigate the expression of CD56 antigen in leukemia cells of the patients with acute myeloid leukemia (AML) and its relationship with the prognosis of AML, and to clarify the role of CD56 antigen expression in predicting the prognosis of the AML patients.Methods: 171 AML (non-M3) patients aged from 14 to 60 years old, who received a IA Regimen as the first time inducing chemotherapy were chosen.Flow cytometric analysis was used to evaluate the CD56 expression in leukemia cells.COX proportional regression analysis was used to select the prognostic factors, and bivariable analysis was used to study the relationship between the positive rate of CD56 and overall survival (OS).The CD56+ group(n=52), including CD56≥50% expression group(n=39) and CD56<50% expression group(n=13), and CD56- group(n=119) were identified by the expression of CD56 antigen.The complete remission rate (CRR), the relapse rate, the median OS, the median disease-free survival (DFS) and the survival rate of patients were compared.Results: The medium OS of the patients in CD56+ group (14.2 months) was shorter than that in CD56- group (39.4 months) (P<0.05).Moreover, the medium OS in CD56≥50% group was shorter than that in CD56<50% group (11.7 months vs 20.3 months, P<0.05).The 1-year and 2-year survival rates of the patients in CD56+ group(61.5%, 46.2%) were lower than those in CD56- group(75.6%, 63.9%)(P<0.05).The 1-year survival rate had no significant difference between CD56≥50% group and CD56<50% group (53.8% vs 84.6%, P>0.05), while the 2-year survival rate in CD56≥50% group was lower than that in CD56<50% group (41.0% vs 61.5%, P<0.05).There were no significant differences of the CRR between CD56+ group(76.9%) and CD56- group (68.9%) as well as CD56≥50% group(58.9%) and CD56<50% group(63.5%) (P>0.05). The relapse rate and first year relapse rate of patients in CD56+ group (64.3% and 37.5%) were significantly higher than those in CD56- group (34.3% and 17.9%) (P<0.05).However, there were no significant differences of the relapse rate and first year relapse rate between CD56≥50% group(75.0% and 42.9%) and CD56<50% group(37.5% and 16.7%) (P>0.05).The DFS in CD56+ group was shorter than that in CD56- group (P<0.05).The same DFS result was also found between CD56≥50% group and CD56<50% group(P<0.05).Conclusion: The expression of CD56 antigen in leukemia cells predicts a bad prognosis in the AML patients, and the higher expression of CD56 indicates the worse prognosis.

Key words: acute myeloid leukemia, CD56, prognosis, overall survival, disease-free survival

CLC Number: 

  • R733.71