Icotrokinra治疗溃疡性结肠炎患者的II期临床试验
Phase 2 Trial of Icotrokinra for Patients with Ulcerative Colitis.
一句话中重度活动性溃疡性结肠炎患者每日口服icotrokinra,3种剂量的第12周临床应答率均优于安慰剂。
研究问题
数据与样本
研究流程
- 1入组与研究设置:在多中心纳入中重度活动性溃疡性结肠炎成人患者,开展IIb期双盲随机临床试验。
- 2随机分组与干预:将参与者分配至每日一次口服icotrokinra 400 mg、200 mg、100 mg或安慰剂组。
- 3主要终点评估:比较各剂量组与安慰剂组第12周的临床应答。
- 4次要终点评估与多重比较:评估第12周临床缓解、症状缓解和内镜改善,采用固定序贯检验程序处理多重比较。
- 5安全性随访:统计截至第28周各组不良事件和严重不良事件的发生比例。
关键方法与工具
- fixed-sequence testing procedure
- 控制次要终点多重比较
设计思路
主要发现
- 主要终点:400 mg、200 mg和100 mg组第12周临床应答率分别为63%、58%和55%,安慰剂组为27%,所有与安慰剂的比较均为P<0.001。
- 次要终点:400 mg组第12周临床缓解率为30% vs. 11%(P = 0.006),症状缓解率为46% vs. 19%(P<0.001),内镜改善率为37% vs. 14%(P = 0.002),均高于安慰剂组。
- 次要终点:200 mg组第12周临床缓解率为24%,与安慰剂比较P = 0.054,未达到统计学显著性;按固定序贯检验程序,未再进行后续次要终点的正式检验。
- 截至第28周,400 mg、200 mg、100 mg和安慰剂组的不良事件发生比例分别为60%、66%、66%和62%,严重不良事件比例分别为2%、5%、0%和10%。
可借鉴之处
- 探索口服药物剂量时,可借鉴本研究的3剂量组与共同安慰剂组设计,在同一试验中评价不同剂量的疗效。
- 将临床应答设为主要终点,并以临床缓解、症状缓解和内镜改善作为次要终点,可从不同维度评价治疗效果。
- 多终点研究可采用固定序贯检验,并在前序比较未达统计学显著性时停止后续正式检验,避免将后续数值差异解释为确证性证据。
数据与代码
局限
- 疗效终点评估截至第12周,安全性报告截至第28周,不能据此判断更长期的疗效与安全性。
- 固定序贯检验在200 mg组临床缓解比较后停止,后续次要终点缺乏正式统计检验支持。
摘要(中文翻译)
背景:靶向白细胞介素-23通路的单克隆抗体可有效治疗炎症性肠病。然而,这些疗法必须通过静脉或皮下注射给药。
方法:我们在中重度活动性溃疡性结肠炎成人患者中开展了一项口服icotrokinra的IIb期双盲随机临床试验;icotrokinra是一种阻断白细胞介素-23受体的肽。参与者被分配接受每日一次400 mg、200 mg或100 mg的icotrokinra,或安慰剂。主要终点为第12周临床应答。次要终点包括第12周临床缓解、症状缓解和内镜改善。
结果:共252名参与者接受随机分组:400-mg组63名、200-mg组62名、100-mg组64名、安慰剂组63名。在第12周临床应答方面,所有剂量的icotrokinra均优于安慰剂;400-mg组、200-mg组和100-mg组的临床应答率分别为63%、58%和55%,安慰剂组为27%(所有与安慰剂的比较均为P<0.001)。400-mg组第12周临床缓解的参与者比例也显著高于安慰剂组(30% vs. 11%,P = 0.006),症状缓解比例(46% vs. 19%,P<0.001)和内镜改善比例(37% vs. 14%,P = 0.002)亦是如此。200-mg组第12周临床缓解的参与者比例为24%(与安慰剂比较,P = 0.054);按照用于处理多重比较的固定序贯检验程序,未再对次要终点进行进一步正式检验。截至第28周,400-mg组、200-mg组、100-mg组和安慰剂组发生不良事件的参与者比例分别为60%、66%、66%和62%。严重不良事件的比例分别为2%、5%、0%和10%。
结论:在中重度活动性溃疡性结肠炎参与者中,每日一次口服icotrokinra的3种受试剂量,第12周临床应答均显著较安慰剂更常见。(由Johnson & Johnson资助;ANTHEM-UC的ClinicalTrials.gov注册号为NCT06049017。)
英文原文摘要
Background:Monoclonal antibodies targeting the interleukin-23 pathway are effective in treating inflammatory bowel disease. However, these therapies must be administered intravenously or by subcutaneous injection.
Methods:We conducted a phase 2b, double-blind, randomized trial of oral icotrokinra, a peptide that blocks the interleukin-23 receptor, in adults with moderately to severely active ulcerative colitis. Participants were assigned to receive icotrokinra at a once-daily dose of 400 mg, 200 mg, or 100 mg or placebo. The primary end point was clinical response at week 12. Secondary end points included clinical remission, remission of symptoms, and endoscopic improvement at week 12.
Results:A total of 252 participants underwent randomization: 63 were assigned to the 400-mg group, 62 to the 200-mg group, 64 to the 100-mg group, and 63 to the placebo group. All the doses of icotrokinra were superior to placebo with respect to a clinical response at week 12, which occurred in 63% of the participants in the 400-mg group, 58% in the 200-mg group, and 55% in the 100-mg group, as compared with 27% in the placebo group (P<0.001 for all comparisons with placebo). The percentage of participants with clinical remission at week 12 was also significantly higher in the 400-mg group than in the placebo group (30% vs. 11%, P = 0.006), as were the percentage of participants with symptomatic remission (46% vs. 19%, P<0.001) and the percentage of participants with endoscopic improvement (37% vs. 14%, P = 0.002). Clinical remission at week 12 occurred in 24% of the participants in the 200-mg group (P = 0.054 for the comparison with placebo); in accordance with the fixed-sequence testing procedure to account for multiple comparisons, no further formal testing of secondary end points was conducted. Through week 28, the percentage of participants with adverse events was 60% in the 400-mg group, 66% in the 200-mg group, 66% in the 100-mg group, and 62% in the placebo group. For serious adverse events, the percentages were 2%, 5%, 0%, and 10%, respectively.
Conclusions:Among participants with moderately to severely active ulcerative colitis, a clinical response at week 12 was significantly more common with once-daily oral icotrokinra at each of three tested doses than with placebo. (Funded by Johnson & Johnson; ANTHEM-UC ClinicalTrials.gov number, NCT06049017.).
摘要来自 PubMed。翻译与解读由模型根据摘要生成,可能有误,不构成诊疗建议;数据以原文为准,版权归原出版方所有。