[Treatment Selection of Elderly Acute Myeloid Leukemia Patients Guided by HCT-CI Score].

OBJECTIVE: To explore the feasibility of guiding the individalized treatment strategy for elderly AML patients by using hematopoietic cell transplantation-comorbidity index(HCT-CI) score.

METHODS: The clinical and biological data of 165 elderly (260 years) AML patients in department of hematology of the first affiliated hospital of Wenzhou medical universtity from January 2000 to December 2014 were analyzed retrospectively. The AML patients were divided into 3 groups: score 0-1, 2-3 and ≥4 according to HCT-CI, then the patients in each group again were divided into standard chemotherapy group, low dose chemotherapy group and support therapy group accoriding to therapeutic regimens, and the efficacy of above mentioned 3 kinds of treatment and their effects on survival of ealderly AML patients were compared, the prognostic risk factors for patients were analyzed further.

RESULTS: A total of 165 patients (100%) were followed-up, and the mean follow-up time was 309 days, median survival time was 210 days. The survival analysis showed that the patients in HCT-CI score 0-1 group and 2-3 group banefited from chemotherapy, while the survival analysis of the HCT-CI score ≥4 group showed that there were no significant differance in survival rate between support therapy and chemotherapy groups. The complete remission rate and early mortality of patients received low dose or standard dose chemotherapy in HCT-CI score 0-1, 2-3 and ≥4 groups were not significantly different. Univariate analysis and multivariante analysis of COX ratio risk model showed that the EOCG-PS≥2, WBC≥100×107 /L at initial diagnosis and HCT-CI score ≥4 were the independent risk factor affecting the prognosis of elderly AML patients. The median survival time of patients received chemotherapy and support therapy was 840 and 150 d(P<0.01) in HCT-CI score 0-1 group respectively, 210 and 60 days (P<0.01) in HCT-CI score 2-3 group respectively, 130 and 90 days (P>0.05) in HCT-CI score ≥4 group, respectively.

CONCLUSION: The HCT-CI score can be used as simple and feasible evaluation criteria to judge the selection of individualized treatment strategy for elderly AML patients.