Phase 3
N=2,011
Study of Obeldesivir in Nonhospitalized Participants With COVID-19
COVID-19
Bottom Line
View on ClinicalTrials.gov: NCT05715528 ↗Enrolled (actual)
2,011
Serious AEs
0.3%
Results posted
Dec 2024
Primary outcome: Primary: Time to Coronavirus Disease 2019 (COVID-19) Symptom Alleviation by Day 29 — 5.9; 6.0 days — p=0.0681
Study Design & Population
- Study type
- Interventional
- Phase
- Phase 3
- Interventions
- Obeldesivir (Drug); Obeldesivir Placebo (Drug)
- Age
- Pediatric, Adult · 12+ yrs
- Sex
- All
- Sponsor
- Gilead Sciences
- Primary completion
- Nov 2023
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Time to Coronavirus Disease 2019 (COVID-19) Symptom Alleviation by Day 29 |
5.9; 6.0 | 0.0681 |
| PRIMARY Percentage of Participants Experiencing Treatment-emergent Adverse Events (TEAEs) |
5.4; 5.7 | — |
| PRIMARY Percentage of Participants Experiencing Laboratory Abnormalities |
77.5; 78.5; 6.1; 8.5 | — |
| PRIMARY Percentage of Participants Experiencing Serious Adverse Events (SAEs) and Adverse Events (AEs) Leading to Study Drug Discontinuation |
0.2; 0.4; 0.1; 0 | — |
| SECONDARY Time to COVID-19 Symptom Resolution by Day 29 |
9.2; 9.3 | 0.5558 |
| SECONDARY Percentage of Participants With Moderate Relapse of COVID-19 Symptoms by Day 29 |
8.3; 9.0 | 0.6469 |
| SECONDARY Percentage of Participants With COVID-19 Related Medically Attended Visits (MAVs) or All-cause Death by Day 29 |
0.1; 0.2 | 0.5581 |
| SECONDARY Percentage of Participants With COVID-19 Related Hospitalization or All-cause Death by Day 29 |
0; 0 | — |
| SECONDARY Change From Baseline in Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Nasal Swab Viral Load at Day 5 |
-2.69; -2.71 | 0.4254 |
| SECONDARY Time to Antigen Negativity |
5.0; 5.0 | 0.0015 sig |
| SECONDARY Percentage of Participants With Viral Antigen Rebound |
1.5; 1.7 | 0.6978 |
| SECONDARY Plasma Concentrations of GS-441524 (Metabolite of Obeldesivir) |
2528.97; 2390.68; 1103.79; 3339.59; 2599.61; 4595.37 | — |
| SECONDARY Pharmacokinetic (PK) Parameter: AUCtau,Steady-State of GS-441524 |
18000 | — |
| SECONDARY PK Parameter: Ctau of GS-441524 |
772; 735 | — |
| SECONDARY PK Parameter: Cmax of GS-441524 |
2910; 2920 | — |
| SECONDARY Percentage of Participants With Relapse of COVID-19 Symptoms by Day 29 |
10.9; 12.0 | 0.5707 |
Summary
The goal of this clinical study is to test if obeldesivir (GS-5245) is safe and effective for the treatment of coronavirus disease 2019 (COVID-19) in participants who have a standard risk of developing severe illness. This study will also measure how much obeldesivir gets into the blood and how long it takes for the body to get rid of it.
Eligibility Criteria
Key Inclusion Criteria
- Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection confirmed, ≤ 3 days before randomization, by polymerase chain reaction (PCR), rapid antigen test, or an approved alternative assay. Serologic tests will not be accepted.
- Willing and able to complete the coronavirus disease 19 (COVID-19) symptom questionnaire prior to first dose and daily throughout the study period.
- Initial onset of COVID-19 signs/symptoms ≤ 3 days before randomization with ≥ 2 of the following targeted symptoms, at moderate or higher severity, present at randomization.
- Stuffy or runny nose.
- Sore throat.
- Shortness of breath (difficulty breathing).
- Cough.
- Low energy or tiredness.
- Muscle or body aches.
- Headache.
- Chills or shivering.
- Feeling hot or feverish.
- Not currently hospitalized or requiring hospitalization.
Key Exclusion Criteria
- Any risk factors for progression to severe disease.
- Planning to receive a direct acting antiviral or monoclonal antibody against SARS-CoV-2 for the treatment of COVID-19.
- Received any direct acting antiviral drug or monoclonal antibody against SARS-CoV-2 for the treatment of COVID-19 < 28 days or < 5 half-lives, whichever is longer, before randomization.
- Received any convalescent COVID-19 plasma or other antibody-based anti-SARS-CoV-2 prophylaxis at any time prior to study entry.
- Received an COVID-19 vaccine (including booster dose) < 120 days before randomization.
- Self-reported COVID-19 diagnosis < 120 days before randomization.
- Anticipated need for hospitalization < 48 hours after randomization.
- New oxygen requirement < 24 hours before randomization.
- Known influenza, or any other suspected or confirmed concurrent active systemic infection other than COVID-19 that may interfere with the evaluation of response to the study drug.
- Known history of chronic liver disease, limited to cirrhosis, nonalcoholic steatohepatitis, alcoholic liver disease, and autoimmune hepatitis.
- Undergoing dialysis, or known history of chronic kidney disease.
- Persistent symptoms from previous COVID-19 illness that may interfere with the evaluation of response to the study drug.
- Pregnant or breastfeeding.
- Unwilling to use protocol-mandated contraception.
- Any other factor, including inability to complete the patient-reported outcome (PRO) questionnaire for the primary endpoint, making the individual, in the opinion of the investigator, unsuitable to participate in the study.
- Concurrent participation/enrollment in a separate therapeutic clinical study.
Note: Other protocol defined Inclusion/Exclusion criteria may apply.
Data sourced from ClinicalTrials.gov (NCT05715528). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.