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Study of Secutrelvir in Participants With COVID-19

A Phase 3 Randomized, Double-blind, Placebo-controlled Study to Evaluate the Efficacy and Safety of Secutrelvir in Participants With COVID-19

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07746544
Enrollment
1200
Registered
2026-08-05
Start date
2026-08-05
Completion date
2027-08-31
Last updated
2026-09-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19

Keywords

S-892216, SARS-CoV-2, Mpro, Main Protease, Nonstructural Protein 5, nsp5

Brief summary

The main purpose of this study is to compare secutrelvir to placebo with respect to resolution of clinical symptoms in nonhospitalized participants with Coronavirus Disease 2019 (COVID-19) starting intervention within 48 hours of COVID-19 symptom onset.

Interventions

Secutrelvir will be administered orally as a tablet.

DRUGPlacebo

Placebo will be administered orally as a tablet.

Sponsors

Shionogi
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
12 Years to 74 Years
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * Must be 12 to \< 18 years of age (where permitted by local regulation) with a body weight ≥ 40 kilograms (kg), or ≥ 18 and \< 75 years of age regardless of body weight, at the time of signing the informed consent form (ICF). * Must have ≥ 1 of the protocol-defined COVID-19 symptoms of moderate or severe, present within 24 hours prior to randomization. * Confirmed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection as determined by any SARS-CoV-2 test, collected ≤ 48 hours prior to randomization. * Must be randomized within 48 hours of COVID-19 symptom onset, defined as the time when the first COVID-19 symptom occurs. * Agrees not to participate in another clinical study for the treatment of COVID-19 until completion of the study. Key

Exclusion criteria

* Current need or anticipated need for hospitalization within 24 hours, due to signs of severe COVID-19 illness or due to other medical conditions requiring hospitalization in the opinion of the site investigator. * Documented respiratory infection (for example, influenza, respiratory syncytial virus infection) other than COVID 19 within 14 days prior to the screening visit. * Known history of cirrhosis or liver decompensation (including ascites, variceal bleeding, or hepatic encephalopathy). * Suspected or confirmed COVID-19 outside of the current episode within 3 months of randomization. * Suspected or confirmed concurrent active systemic infection other than COVID-19 that may interfere with the evaluation of response to the investigational intervention. * Ongoing long COVID or postacute sequelae of COVID (PASC) diagnosis. * Current severely immunocompromised conditions. * Received or expected to receive any other COVID-19-specific therapies. * Have previously received secutrelvir. * Exposed to an investigational drug within 30 days or 5 half-lives (whichever is longer) prior to the screening visit. Note: Other protocol-defined inclusion and

Design outcomes

Primary

MeasureTime frameDescription
Time to First Resolution of 14 Protocol-defined Symptoms of COVID-19 Through Day 21Baseline through Day 21Symptoms will be assessed by the investigator via a participant daily electronic diary.

Secondary

MeasureTime frameDescription
Time to Sustained Resolution of 14 Protocol-defined Symptoms of COVID-19 Through Day 28Baseline through Day 28Symptoms will be assessed by the investigator via a participant daily electronic diary.
Time to Sustained Resolution of 14 Protocol-defined Symptoms of COVID-19 Through Day 21Baseline through Day 21Symptoms will be assessed by the investigator via a participant daily electronic diary.
Time to First Resolution of 14 Protocol-defined Symptoms of COVID-19 Symptoms Through Day 28Baseline through Day 28Symptoms will be assessed by the investigator via a participant daily electronic diary.
Time to First Alleviation of 14 Protocol-defined Symptoms of COVID-19 Through Day 21Baseline through Day 21Symptoms will be assessed by the investigator via a participant daily electronic diary.
Time to Sustained Alleviation of 14 Protocol-defined Symptoms of COVID-19 Through Day 21Baseline through Day 21Symptoms will be assessed by the investigator via a participant daily electronic diary.
Area Under The Curve (AUC) of Change From Baseline in Protocol-defined 14 COVID 19 Symptoms Total Score at Day 8Baseline, Day 8
Time to First Resolution of Fever Based on Body TemperatureBaseline through Day 28Symptoms will be assessed by the investigator via a participant daily electronic diary.
Time to Sustained Resolution of Fever Based on Body TemperatureBaseline through Day 28Symptoms will be assessed by the investigator via a participant daily electronic diary
Change From Baseline in SARS-CoV-2 Viral RNA LevelBaseline through Day 28
Percentage of Participants With All-cause HospitalizationBaseline through Day 21
Percentage of Participants With All-cause DeathBaseline through Day 21
Plasma Concentration of Secutrelvir and Its MetabolitesDays 4 and 8
Number of Participants With Treatment-emergent Adverse Events (TEAEs)Baseline through Day 28

Countries

Japan

Contacts

CONTACTShionogi Clinical Trials Administrator Clinical Support Help Line
Shionogiclintrials-admin@shionogi.co.jp1-800-849-9707

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 3, 2026