Haematologica:天门冬酰胺酶治疗儿童急性淋巴细胞白血病和非霍奇金淋巴瘤,强化用药时间的疗效是否会更佳?

2017-07-30 xiaoxiao MedSci原创

天门冬酰胺酶是儿童急性淋巴细胞白血病和非霍奇金淋巴瘤的联合化疗方案中的重要组成部分。

天门冬酰胺酶是儿童急性淋巴细胞白血病和非霍奇金淋巴瘤的联合化疗方案中的重要组成部分。

欧洲儿童血液癌症研究与治疗组织(European Organzation for Research and Treatment of Cancer Children's Leukemia Group)进行的一项包含58951例患儿的III期临床试验中,在其非极高危患儿比较加强天然大肠杆菌天门冬酰胺酶疗法(长期天门冬酰胺酶组)vs 标准天然大肠杆菌天门冬酰胺酶疗法(短期天门冬酰胺酶组)的部分研就中,研究人员通过一个随机问题挑选的非极高危患者组成的研究的结果再次证明了天门冬酰胺酶的重要性。主要终点是无病生存期。

总体而言,共有1552例患者被随机分配到长期天门冬酰胺酶(775例)或短期天门冬酰胺酶(777例)治疗。存在≥2级天然大肠杆菌过敏的患者改用等效剂量的欧文氏菌或聚乙二醇化大肠杆菌天门冬酰胺酶。8年内的无病生存率(±标准误差),在长期天门冬酰胺酶组为87.0+/- 1.3%,在短期天门冬酰胺酶组为84.4±1.4%(风险比0.87,P = 0.33);8年总生存率分别为92.6±1%和91.3±1.2%(风险比:0.89,P = 0.53)。

探索性分析表明,长期天门冬酰胺酶的作用在国家癌症研究所的标准风险组的无病生存率方面更有优势(危险比:0.70;P = 0.057),但在总生存率方面较差(风险比:0.89)。长期天门冬酰胺酶组患者,恢复期(25.2% vs 14.4%)和强化治疗后期(22.6% vs 15.9%)的3-4级感染的发生率,以及2-4级过敏(30% vs 21%)的发生率较高。

在非极高危患者的恢复期和强化治疗的后期,长期大肠杆菌天门冬酰胺酶疗法并没有改善整体结局,反而导致了感染和过敏的增加。

原始出处:

Mondelaers V1, Suciu S,et al.Prolonged versus standard native E. coli asparaginase therapy in childhood acute lymphoblastic leukemia and non-Hodgkin lymphoma: final results of the EORTC-CLG randomized phase III trial 58951.Haematologica. 2017 Jul 27. pii: haematol.2017.165845. doi: 10.3324/haematol.2017.165845. [Epub ahead of print]

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    2018-01-15 changfy
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    2017-08-01 fengyi812

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