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Virologic Response and Safety of Ibuzatrelvir, a Novel SARS-CoV-2 Antiviral, in Adults With COVID-19
Clinical Infectious Diseases ( IF 8.2 ) Pub Date : 2024-11-01 , DOI: 10.1093/cid/ciae529
Mahta Mortezavi, Abigail Sloan, Ravi Shankar P Singh, Luke F Chen, Jin Hyang Kim, Negin Shojaee, Sima S Toussi, John Prybylski, Mary Lynn Baniecki, Arthur Bergman, Anindita Banerjee, Charlotte Allerton, Negar Niki Alami

Background Despite effective vaccines and treatments for COVID-19, clinical burden persists. An unmet need exists for additional effective agents with safety profiles allowing use across a broad population. Ibuzatrelvir is an orally bioavailable SARS-CoV-2 Mpro inhibitor that has demonstrated in vitro antiviral activity and low potential for safety concerns, including drug-drug interactions. Methods This phase 2b, double-blind, randomized clinical trial enrolled US adults aged 18‒<65 years with symptomatic COVID-19 and no risk factors for severe disease. Participants were randomized 1:1:2:2 to receive 100, 300, or 600 mg ibuzatrelvir or placebo orally twice daily for 5 days. Nasopharyngeal specimens were collected on Days 1 (baseline), 3, 5, 10, 14, and 21; adverse events (AEs) were recorded through Day 33. The primary endpoint was change in SARS-CoV-2 RNA level (viral load [VL]) from baseline to Day 5 among participants with baseline VL ≥4 log10 copies/mL. Results Of 240 enrollees, 237 received ≥1 dose and 199 were included in the primary analysis. Placebo-adjusted least squares mean (80% CI) change from baseline in VL at Day 5 was significant across all doses: 100 mg, ‒0.7 (‒1.1, ‒0.3) log10 copies/mL, P=0.02; 300 mg, ‒0.8 (‒1.3, ‒0.3) log10 copies/mL, P=0.01; and 600 mg, ‒1.2 (‒1.5, ‒0.8) log10 copies/mL, P<0.0001. AEs occurred in similar percentages of participants across groups. No deaths from any cause or treatment-related serious AEs occurred through Day 33, and no participants reported dysgeusia. Conclusions All 3 ibuzatrelvir doses were associated with robust antiviral activity and an acceptable safety profile, supporting continued clinical development. Trial Registration Clinicaltrials.gov identifier: NCT05799495

中文翻译:


新型 SARS-CoV-2 抗病毒药物 Ibuzatrelvir 在成人 COVID-19 患者中的病毒学反应和安全性



背景 尽管针对 COVID-19 的疫苗和治疗方法有效,但临床负担仍然存在。对具有安全性的其他有效药物的需求尚未得到满足,以便在广泛的人群中使用。Ibuzazrelvir 是一种口服生物可利用的 SARS-CoV-2 Mpro 抑制剂,已证明具有体外抗病毒活性和低潜在的安全问题,包括药物相互作用。方法 这项 2b 期、双盲、随机临床试验招募了 18-<65 岁有症状的 COVID-19 且无严重疾病危险因素的美国成年人。参与者以 1:1:2:2 的比例随机接受 100 、 300 或 600 mg ibuzatrelvir 或安慰剂,每天两次口服,持续 5 天。在第 1 天 (基线) 、 第 3 天 、 第 5 天 、 第 10 天 、 第 14 天和第 21 天收集鼻咽标本;不良事件 (AE) 记录到第 33 天。主要终点是基线 VL ≥4 log10拷贝/mL) 参与者的 SARS-CoV-2 RNA 水平(病毒载量 [VL])从基线到第 5 天的变化。结果 在 240 名入组者中,237 名接受了 ≥1 剂,199 名被纳入初步分析。安慰剂调整的最小二乘均值 (80% CI) 第 5 天 VL 相对于基线的变化在所有剂量中均显著:100 mg,\u20120.7 (\u20121.1, \u20120.3) log10 拷贝/mL,P = 0.02;300 mg,\u20120.8 (\u20121.3, \u20120.3) log10 拷贝/mL,P = 0.01;和 600 毫克,\u20121.2 (\u20121.5, \u20120.8) log10 拷贝/mL,P<0.0001。各组参与者的 AE 发生率相似。截至第 33 天,没有发生任何原因或治疗相关的严重 AE 死亡,也没有参与者报告味觉障碍。结论 所有 3 剂 ibuzazrelvir 均具有强大的抗病毒活性和可接受的安全性,支持持续的临床开发。试验注册 Clinicaltrials.gov 标识符:NCT05799495
更新日期:2024-11-01
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