Efficacy and safety of GST-HG171 in adult patients with mild to moderate COVID-19 : a randomised, double-blind, placebo-controlled phase 2/3 trial

© 2024 The Author(s)..

Background: GST-HG171 is a potent, broad-spectrum, orally bioavailable small-molecule 3C like protease inhibitor that has demonstrated greater potency and efficacy compared to Nirmatrelvir in pre-clinical studies. We aimed to evaluate the efficacy and safety of orally administered GST-HG171 plus Ritonavir in patients with coronavirus disease 2019 (COVID-19) infected with emerging XBB and non-XBB variants.

Methods: This randomised, double-blind, placebo-controlled phase 2/3 trial was conducted in 47 sites in China among adult patients with mild-to-moderate COVID-19 with symptoms onset ≤72 h. Eligible patients were randomised 1:1 to receive GST-HG171 (150 mg) plus Ritonavir (100 mg) or corresponding placebo tablets twice daily for 5 days, with stratification factors including the risk level of disease progression and vaccination status. The primary efficacy endpoint was time to sustained recovery of clinical symptoms within 28 days, defined as a score of 0 for 11 COVID-19-related target symptoms for 2 consecutive days, assessed in the modified intention-to-treat (mITT) population. This trial was registered at ClinicalTrials.gov (NCT05656443) and Chinese Clinical Trial Registry (ChiCTR2200067088).

Findings: Between Dec 19, 2022, and May 4, 2023, 1525 patients were screened. Among 1246 patients who underwent randomisation, most completed basic (21.2%) or booster (74.9%) COVID-19 immunization, and most had a low risk of disease progression at baseline. 610 of 617 who received GST-HG171 plus Ritonavir and 603 of 610 who received placebo were included in the mITT population. Patients who received GST-HG171 plus Ritonavir showed shortened median time to sustained recovery of clinical symptoms compared to the placebo group (13.0 days [95.45% confidence interval 12.0-15.0] vs. 15.0 days [14.0-15.0], P = 0.031). Consistent results were observed in both SARS-CoV-2 XBB (45.7%, 481/1053 of mITT population) and non-XBB variants (54.3%, 572/1053 of mITT population) subgroups. Incidence of adverse events was similar in the GST-HG171 plus Ritonavir (320/617, 51.9%) and placebo group (298/610, 48.9%). The most common adverse events in both placebo and treatment groups were hypertriglyceridaemia (10.0% vs. 14.7%). No deaths occurred.

Interpretation: Treatment with GST-HG171 plus Ritonavir has demonstrated benefits in symptom recovery and viral clearance among low-risk vaccinated adult patients with COVID-19, without apparent safety concerns. As most patients were treated within 2 days after symptom onset in our study, confirming the potential benefits of symptom recovery for patients with a longer duration between symptom onset and treatment initiation will require real-world studies.

Funding: Fujian Akeylink Biotechnology Co., Ltd.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:71

Enthalten in:

EClinicalMedicine - 71(2024) vom: 01. Apr., Seite 102582

Sprache:

Englisch

Beteiligte Personen:

Lu, Hongzhou [VerfasserIn]
Zhang, George [VerfasserIn]
Mao, John [VerfasserIn]
Chen, Xiaochun [VerfasserIn]
Zhan, Yangqing [VerfasserIn]
Lin, Ling [VerfasserIn]
Zhang, Tianxiang [VerfasserIn]
Tang, Yanan [VerfasserIn]
Lin, Feng [VerfasserIn]
Zhu, Feiyue [VerfasserIn]
Lin, Yuanlong [VerfasserIn]
Zeng, Yiming [VerfasserIn]
Zhang, Kaiyu [VerfasserIn]
Yuan, Wenfang [VerfasserIn]
Liang, Zhenyu [VerfasserIn]
Sun, Ruilin [VerfasserIn]
Huo, Liya [VerfasserIn]
Hu, Peng [VerfasserIn]
Lin, Yihua [VerfasserIn]
Zhuang, Xibin [VerfasserIn]
Wei, Zhaohui [VerfasserIn]
Chen, Xia [VerfasserIn]
Yan, Wenhao [VerfasserIn]
Yan, Xiuping [VerfasserIn]
Mu, Lisa [VerfasserIn]
Lin, Zhuhua [VerfasserIn]
Tu, Xinyu [VerfasserIn]
Tan, Hongshan [VerfasserIn]
Huang, Fuhu [VerfasserIn]
Hu, Zhiqiang [VerfasserIn]
Li, Hongming [VerfasserIn]
Li, Guoping [VerfasserIn]
Fu, Haijun [VerfasserIn]
Yang, Zifeng [VerfasserIn]
Chen, Xinwen [VerfasserIn]
Wang, Fu-Sheng [VerfasserIn]
Zhong, Nanshan [VerfasserIn]

Links:

Volltext

Themen:

3CL protease
Anti SARS-CoV-2 drug
COVID-19
Journal Article
RCT
XBB variants

Anmerkungen:

Date Revised 25.04.2024

published: Electronic-eCollection

ClinicalTrials.gov: NCT05656443

Citation Status PubMed-not-MEDLINE

doi:

10.1016/j.eclinm.2024.102582

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM371075319