AJG:利妥昔单抗可治疗原发性胆汁性肝硬化

2013-07-15 tiancai_erbao dxy

利妥昔单抗– CD20的单克隆抗体,能够选择性消耗B细胞,有望成为调节自身抗体引起的自身免疫紊乱疾病的药物。熊去氧胆酸为治疗原发性胆汁性肝硬化的药物,但并非对所有患者均有效,所以寻找其他的治疗方案是必要的。加拿大卡尔加里大学医学院的Robert P. Myers设计了实验评估利妥昔单抗治疗熊去氧胆酸治疗无效的原发性胆汁性肝硬化患者的安全性及疗效。该结果发表在2013年6月The American

利妥昔单抗– CD20的单克隆抗体,能够选择性消耗B细胞,有望成为调节自身抗体引起的自身免疫紊乱疾病的药物。熊去氧胆酸为治疗原发性胆汁性肝硬化的药物,但并非对所有患者均有效,所以寻找其他的治疗方案是必要的。

加拿大卡尔加里大学医学院的Robert P. Myers设计了实验评估利妥昔单抗治疗熊去氧胆酸治疗无效的原发性胆汁性肝硬化患者的安全性及疗效。该结果发表在2013年6月The American journal of Gastroenterology上。

14例熊去氧胆酸治疗无效的原发性胆汁性肝硬化患者静脉应用利妥昔单抗1000mg,每周2次。初级应答为血清碱性磷酸酶恢复正常或至少改善25%。

14名患者的中位年龄为53岁。92%为女性,血清抗线粒体抗体(AMA)阳性。平均熊去氧胆酸用量为15.3mg/kg/天(四份间距为14.5-17.8)。虽然对利妥昔单抗耐受性良好,一名患者因第一次静脉输注利妥昔单抗时出现哮喘加剧而退出实验。在剩余的13名患者中检测B细胞消耗的情况。其中3人出现抗人嵌合型抗体阳性。用药6、12和18个月后,3名患者(23%)达到了血清碱性磷酸酶恢复正常或至少改善25%。

碱性磷酸酶平均水平明显降低(在第6个月碱性磷酸酶的基线水平由259 U / l下降到213 U / l,平均降低16%)。用药6个月时血清IgM和血清抗线粒体抗体为阳性。用药12个月,虽然患者仍感觉乏力,但60%患者皮肤瘙痒有所缓解(8%存在皮肤瘙痒较前明显进展)。利妥昔单抗使B细胞出现选择性消耗是安全的,能够显著降低自身免疫性抗体的产生。但在对熊去氧胆酸不完全应答的患者中利妥昔单抗所取得的生物化学效应是有限的。


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    2013-08-07 minzju5052
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一项随机Ⅲ期研究的结果显示,苯丁酸氮芥+利妥昔单抗联合治疗黏膜相关淋巴组织(MALT)淋巴瘤患者的无事件生存率和无进展生存率均优于仅接受其中一种药物治疗的患者。国际结外淋巴瘤研究组研究(IELSG-19)显示,联合治疗组131例患者的5年无事件生存率为70%,而苯丁酸氮芥单药治疗组130例患者为52%,利妥昔单抗单药治疗组132例患者为51%。联合治疗组与两个单药治疗组相比,无进展生存率也显著提高