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Evaluation of gecacitinib vs hydroxyurea in patients with intermediate-2 or high-risk myelofibrosis: final analysis results from a randomized phase 3 study
Blood Cancer Journal ( IF 12.9 ) Pub Date : 2024-12-18 , DOI: 10.1038/s41408-024-01202-8
Yi Zhang 1, 2, 3, 4 , Hu Zhou 5 , Shanshan Suo 1, 2, 3, 4 , Junling Zhuang 6 , Linhua Yang 7 , Aili He 8 , Qingchi Liu 9 , Xin Du 10 , Sujun Gao 11 , Yarong Li 12 , Yan Li 13 , Yuqing Chen 14 , Wen Wu 15 , Huanling Zhu 16 , Guangsheng He 17 , Mei Hong 18 , Qian Jiang 19 , Zhongxing Jiang 20 , Hongmei Jing 21 , Jishi Wang 22 , Na Xu 23 , Lingling Yue 24 , Cuiping Zheng 25 , Zeping Zhou 26 , Chenghao Jin 27 , Xin Li 28 , Lin Liu 29 , Yajing Xu 30 , Dengshu Wu 30 , Feng Zhang 31 , Jin Zhang 32 , Liqing Wu 33 , Hewen Yin 33 , Binhua Lv 33 , Zhijian Xiao 34 , Jie Jin 1, 2, 3, 4
Affiliation  

To compare the efficacy and safety of gecacitinib (also known as jaktinib) with hydroxyurea (HU) in treating myelofibrosis (MF) patients. In this multicenter, randomized phase 3 trial (ZGJAK016), intermediate- or high-risk primarily JAK inhibitor naïve MF patients were assigned in a 2:1 ratio to receive either gecacitinib (100 mg twice a day, BID) or HU (500 mg BID). The primary endpoint was the proportion of patients with ≥35% reduction in spleen volume (SVR35) from baseline at week 24. Secondary endpoints included the best spleen response rate, the proportion of patients with a ≥50% reduction in total symptom score (TSS50), anemia improvement, and safety profile. At 24 weeks, the SVR35 was reached by 64.8% of patients on gecacitinib (46/71), compared to 26.5% on HU (9/34), P = 0.0002. The best spleen response rates were also superior for gecacitinib at 81.7%, vs 32.4% for HU, P < 0.0001. The TSS50 rates were 62.0% for gecacitinib- and 50% for HU-treated patients. Among non-transfusion-dependent patients with baseline hemoglobin (HGB) ≤ 100 g/L, 31.0% (13/42) in the gecacitinib group showed a ≥20 g/L increase in HGB, compared to 15.0% (3/20) in HU group. The common grade ≥ 3 treatment-emergent adverse events (TEAEs), including anemia (26.8% vs 44.1%), thrombocytopenia (15.5% vs 32.4%), leukopenia (2.8% vs 20.6%), and neutropenia (1.4% vs 20.6%), were less frequent with gecacitinib than HU. Treatment discontinuation due to TEAEs was lower in gecacitinib (7.0%) compared to HU (11.8%). Gecacitinib demonstrates superior efficacy and a more favorable safety profile compared to HU, making it a promising treatment option for managing MF, particularly in patients with anemia (This trial was registered with ClinicalTrials.gov, (NCT04617028)).



中文翻译:


gecacitinib 与羟基脲在中 2 期或高危骨髓纤维化患者中的评价:一项随机 3 期研究的最终分析结果



比较吉卡替尼(也称为 jaktinib)与羟基脲 (胡) 治疗骨髓纤维化 (MF) 患者的疗效和安全性。在这项多中心、随机 3 期试验 (ZGJAK016) 中,中度或高风险主要为 JAK 抑制剂初治的 MF 患者以 2:1 的比例分配接受吉卡替尼 (100 mg 每天两次,BID) 或 胡 (500 mg BID)。主要终点是第 24 周时脾体积 (SVR35) 较基线减少 ≥35% 的患者比例。次要终点包括最佳脾脏反应率、总症状评分 (TSS50) 降低 ≥50% 的患者比例、贫血改善和安全性。在 24 周时,64.8% 的患者使用吉卡替布达到 SVR35 (46/71),而 胡 为 26.5% (9/34),P = 0.0002。吉卡替尼的最佳脾脏反应率也优于 81.7%,而 胡 为 32.4%,P < 0.0001。吉卡替尼患者的 TSS50 率为 62.0%,胡 治疗患者的 TSS50 率为 50%。在基线血红蛋白 (HGB) ≤ 100 g/L 的非输血依赖型患者中,吉卡替布组 31.0% (13/42) 显示 HGB 增加 ≥20 g/L,而胡组为 15.0% (3/20)。常见的 ≥ 3 级治疗中出现的不良事件 (TEAE),包括贫血 (26.8% 对 44.1%)、血小板减少症 (15.5% 对 32.4%)、白细胞减少症 (2.8% 对 20.6%) 和中性粒细胞减少症 (1.4% 对 20.6%),吉卡替尼组比 胡 组发生率低。与 胡 (11.8%) 相比,gecacitinib (7.0%) 因 TEAE 导致的治疗中断率较低。与 胡 相比,Gecacitinib 显示出卓越的疗效和更有利的安全性,使其成为管理 MF 的有前途的治疗选择,尤其是对于贫血患者(该试验在 ClinicalTrials.gov,(NCT04617028) 注册)。

更新日期:2024-12-18
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