弥漫性大B细胞性非霍奇金淋巴瘤利妥昔单克隆抗体联合化疗后免疫球蛋白的变化

利妥昔(rituximab,RTX)单克隆抗体能够迅速减少循环血液中B细胞的数量,导致血液免疫球蛋白减少。有关RTX引起的低免疫球蛋白血症也一直缺乏系统研究,为此我们研究了RTX联合CHOP方案治疗B细胞淋巴瘤血免疫球蛋白水平的变化。2004年1月至2009年12月我院收治的采用CHOP和R-CHOP治疗的18岁以上成年人初治CD20阳性弥漫性大B细胞非霍奇金淋巴瘤共122例,根据治疗方案的不同分为CHOP和R-CHOP两个组,记录两组病人各阶段免疫球蛋白水平的变化,剔除治疗前免疫球蛋白水平异常的病例后进行分析。结果显示,6个疗程结束后R-CHOP组82例基线免疫球蛋白正常的病人中,IgG水平比基线值下降超过20%的病人,占85.4%,低于正常值下限者占47.6%;IgA水平较基线值下降超过20%的病人同样占85.4%,低于正常值下限者占48.8%;IgM水平较基线值下降超过20%的病人占87.8%,低于正常值下限者占52.4%。CHOP组共24例治疗前后免疫球蛋白水平无显著变化。结论 :低免疫球蛋白血症是RTX联合CHOP方案化疗的常见并发症,免疫球蛋白血症水平多在停止治疗1年左右恢复至正常水平,少数病人免疫球蛋白的减少甚至可以持续2年以上。

Change of serum immunoglobulin level in patients with diffuse large B cell lymphoma after rituximab combined with chemotherapy

This study was purposed to investigate the changes of serum immunglobulin(Ig) level during treatment of diffuse large B cell lymphoma by using rituximab(RTX) combined with CHOP.Total of 122 newly diagnosed patients with CD20+ diffuse large B cell lymphoma from January 2004 to December 2009 were analyzed retrospectively.According to different treatment regimens,122 patients were divided into 2 group: group treated with CHOP(n=24) and group treated with R-CHOP(n=98,out of which 16 patients with abnormal Ig le...