老年弥漫大B细胞淋巴瘤联合化疗效果分析

来源:岁月联盟 作者:朱志刚 时间:2017-02-28
      美罗华是通过基因重组技术生产的一种人鼠嵌合性单克隆抗体,是一种治疗性抗体,它能与B淋巴细胞上的CD20抗原特异性的结合,通过介导抗体依赖的细胞毒性(ADCC)和补体依赖的细胞毒性(CDC)作用清除B细胞。有资料表明,美罗华可诱导细胞产生抗增殖、凋亡信号,从而增加耐药淋巴瘤细胞对化疗的敏感性〔7〕。CHOP方案是年轻和老年DLBCL患者的标准方案,但老年DLBCL的CR率仅为40%~50%,3年总体生存率(OS)为35%~40%〔8〕。对于侵袭性NHL患者,单用美罗华的总有效率较低,总反应率(ORR)为31%〔7〕,中位至疾病进展时间(TTP)仅8月多。而R-CHOP方案治疗结果大为改观,ORR达94%〔9〕,中位持续反应时间(DR)26月。除联合CHOP化疗方案外,在许多II期临床研究中,美罗华还被用于与DHAP、EPOCH、VNCOP-B、ICE以及含氟达拉滨的化疗方案配伍。结果均发现美罗华联合化学治疗可在并不增加毒性的基础上,进一步提高肿瘤的缓解率和延长肿瘤缓解时间。美罗华联合化疗的效果已使用成为一线治疗侵袭性淋巴瘤的新标准。此外,美罗华维持治疗可能在彻底清除微小肿瘤病灶,减少复发方面发挥作用。本次12病例选择R-CHOP化疗后均达CR(CR率偏高可能与所选病人情况有关),均未疾病进展,均未发生严重或危及生命的不良反应。综上所述,我们可以看到R-CHOP方案对老年弥漫大B细胞淋巴瘤治疗有较好的疗效,不良反应极小,药物耐受好。
参 考 文 献
[1]Vose JM,Link BK,Grossbard ML,et al.Phase Ⅱ study of rituximab in combination with CHOP chemotherapy in patients with previously untreated,aggressive non-Hodgkin’s lymphoma.J Clin Oncol,2001,19(2):389-397.
[2]Coiffier B,Lepage E,Briere J,et al.CHOP chemotherapy plus rituximab compared with CHOP alone in elderly patients with diffuse large-B-cell lymphoma.N Engl J Med,2002,346(4):235-242. 
[3]Sehn LH,Jane DJ,Chhanabhai M,et al.Introduction of combined CHOP plus rituximab therapy improved outcome of diffuse large B-cell lymphoma in British Columbia. J Clin Oncol,2005,23:5027.
[4]Pfreundschuch M,Truemper L,Gill D,et al.Fist analysis of the completed mabthera international (Mlnt)trial in young patients with low-risk diffuse large B-cell lymphoma(DLBCL):Addition of rituximab to a CHOP-like regimens significantly improves outcome of all patients with the identification of a very favorable subgroup with IPI=0 and no bulky disease. Blood,2004,104:Abstract 157.
[5]林桐榆.中山大学肿瘤防治中心,高危弥漫大B细胞淋巴瘤的诊断和治疗进展.肿瘤预防与治疗,2008(1): 1-7.
[6]周立强.中国协和医科大学,肿瘤医院.临床肿瘤学进展,2006,3(2):907-910.
[7]Demidem A,Lam T,Alas S,et al.Chimeric anti-CD20(IDEC-C2B8)monoclonal antibody sensitizes a B cell lymphoma cell line to cell killing by cytoxic drugs.Cancer Biother Radiopharm,1997,12(3):117-186.
[8]Forer A,Lobuglio AF.History of antibody therapy for non-Hodgkin’s lymphoma.Semin Oncol,2003,30(6 Suppl 17):1-5.
[9]Coiffer B,Hiaoun C,Ketterer N,et al. Rituximab (anti-CD20 monoclonal antibody)for the treatment of patients with relapsing or refractory aggressive lymphoma:multicenter phase Ⅱ study.Blood,1998,92(6):1927-1932.

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