A randomized, double-blind, placebo-controlled phase II clinical study to evaluate the efficacy and safety of WPV01 in patients with mild/moderate COVID-19 infection

Inclusion Criteria:

1. Participants ≥18 years of age when signing ICF;
2. Initial onset at least 1 of 11 COVID-19 symptoms within 48 hours before randomization;
3. Within three days before randomization, the RT-PCR test of specimens such as nasal and pharyngeal swabs must be positive for SARS-CoV-2 or the rapid antigen test must be positive, and also the patiets should meet the diagnostic criteria for mild or moderate cases as defined in the Diagnosis and Treatment Protocol for COVID-19 (Trial Version 10) issued by the National Health Commission of China;
4. Fertile participants must agree to take effective contraceptive measures;
5. Participants who understand and agree to comply with planned study procedures，voluntarily participate in this clinical trial and sign an informed consent form.

Exclusion Criteria:

1. Known allergy to any ingredient in the study treatment drug;
2. Patients who meet the diagnostic criteria for severe or critical cases of COVID-19 as defined in the Diagnosis and Treatment Protocol for Novel Coronavirus Pneumonia (Trial Version 10) issued by the National Health Commission of China at the time of randomization;
3. Obvious abnormal liver function (ALT or AST ≥ 3ULN, or total bilirubin ≥1.5ULN);
4. On dialysis or combined with moderate to severe kidney injury;
5. Patients with compromised immune system;
6. Patients with acute exacerbation of chronic respiratory disease at screening, including bronchial asthma, chronic obstructive pulmonary disease;
7. Patients with suspected or confirmed concurrent active systemic infection other than COVID-19 at screening;
8. Any comorbidity requiring surgery within 14 days prior to study entry, or that is considered life threatening within 30 days prior to study entry, as determined by the investigator;
9. Has received or is expected to receive COVID-19 monoclonal antibody or convalescent COVID-19 plasma during study treatment;
10. Has received treatment with antivirals against SARS-CoV-2 within 14 days prior to randomization;
11. Has received any novel coronavirus infection vaccine within 1 week prior to randomization;
12. Current or expected use of strong CYP3A4 inducers, inhibitors or medications that are highly dependent on CYP3A4 for clearance;
13. Difficulty swallowing or a history of gastrointestinal disorders that severely interfere with drug absorption;
14. BMI≥30 kg/m2;
15. Pregnant, lactating women or those with a positive pregnancy test;
16. Previous administration with any investigational drug within 3 months before the study drug administration;
17. Patients who are judged by the investigator to be unsuitable to participate in this study.

6 months after summary data has been published, sponsor will share the IPD and additional supporting information after internal approval process.