单纯CHOP样方案与CHOP样方案联合造血干细胞移植巩固治疗淋巴母细胞淋巴瘤的疗效分析

目的 探讨单纯CHOP样方案与CHOP样方案+高剂量治疗联合造血干细胞移植(HDT-HSCT)一线巩固治疗淋巴母细胞淋巴瘤(LBL)的疗效.方法 63例有完整治疗及随访记录的LBL患者,初治均采用标准CHOP样方案,42例获得完全缓解(CR)或不确定CR(CRu).其中26例接受HDT-HSCT巩固治疗,16例单纯进行6～8个周期CHOP样方案治疗.结果 63例患者中,初治总缓解率为82.5%.中位随访24个月时,5年生存率为31.2%,5年无病生存率为29.3%.接受HDT-HSCT巩固治疗的26例患者,5年生存率为59.8%;单纯CHOP样方案治疗的16例患者,5年生存率为14.6%,差异有统计学意义(P=0.004).单因素预后分析结果显示,年龄、骨髓侵犯、初治缓解情况与预后有关(均P<0.05).18例骨髓受侵的患者中,3例接受异基因造血干细胞移植(allo-HSCT)的患者在随访22、32和37个月时仍生存,而4例接受自体造血干细胞移植(auto-HSCT)的患者,均在14个月内死亡.结论 单纯应用CHOP样方案治疗LBL疗效欠佳.HDT-HSCT作为一线巩固治疗有可能提高LBL患者的总生存率和无病生存率.骨髓受侵的LBL患者,allo-HSCT的效果优于auto-HSCT.

Comparison of the efficiency of CHOP-based regimen with or without high dose consolidation treatment combined with hematopoietic stem cell transplantation in 63 lymphoblastic lymphoma patients

Objective To retrospectively analyze and compare the treatment efficiency of CHOP-based regimens with or without high-dose consolidation treatment combined with hematopoietie stem cell transplantation (HDT-HSCT) in the patients with lymphoblastic lymphoma (LBL). Methods From 1989 to 2004, totally 63 patients with LBL were initially treated with a standard CHOP-based regimen. Forty-two of the 63 patients achieved complete response (CR), 26 of those subsequently received consolidation HDT-HSCT, while the other 16 had 6-8 cycles of standard CHOP-based treatment only. Results Of the 63 patients, 57 had a T-LBL and 6 B-LBL, with a median age of 20 years, 19 (30.2%) had a stage Ⅰ-Ⅱ diseases and 44 (69.8%) stage Ⅲ-Ⅳ diseases, 61.9% presented with a mediastinal mass. Bone marrow involvement presented in 28.6% of the patients. Fourteen percent had central nervous system involvement. The median follow-up period was 24 months, and the estimated 5-year overall survival and disease-free survival of this series was 31.2% and 29.3%, respectively. Of the 42 patients who achieved CR, the 5-year OS rate of the patients who received HDT-HSCT as a consolidation therapy was 59.8% versus 14.6% of the patients treated by CHOP-based regimens alone (P =0.004). Bone marrow involvement, age ≥20 years, short response duration and primary refractory disease were factors significantly associated with poor outcome. Among the 18 patients with bone marrow involvement, 3 received allogeneic HSCT and were all still alive at the follow up time of 22, 32 and 37 months, respectively, while another 4 received auto-HSCT and all died of the disease within 14 months. Conclusion Short term treatment with a CHOP-based regimen is not sufficient for the patients with lymphoblastic lymphoma. High-dose consolidation treatment and hematopoietic stem cell transplantation may improve overall survival and disease free survival. Bone marrow involvement, age > 20 years, and short response duration and primary refractory disease are all the factors significantly associated with poor outcome. For the patients with bone marrow involvement, allo-hematopoietic stem cell transplantation is superior to auto-hematopoietic stem cell transplantation.