CI

At a glance

ClinicalIndex Comparison Record
Phase 3Completed· 4,138 enrolled
Drug / intervention
Baloxavir Marboxil +1 moredrug
Likely dose
Baloxavir Marboxil 2 mg/kgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03969212
NCT03969212Phase 3Completed

A Phase IIIB, Multicenter, Randomized, Double-Blind, Placebo-Controlled, Clinical Efficacy Study of Baloxavir Marboxil for the Reduction of Direct Transmission of Influenza From Otherwise Healthy Patients to Household Contacts

Hoffmann-La Roche·interventional·Posted May 31, 2019·Updated Jul 4, 2025

In Brief

A Phase 3 clinical trial evaluating Baloxavir Marboxil and Placebo for Influenza. Completed, enrolled 4,138 participants across 142 sites in 16 countries.

Detailed Summary

Otherwise healthy index patients (IP) are randomized to either baloxavir marboxil or placebo if their influenza symptoms onset was within 48 hours of screening. Their households are enrolled within 24 hours of randomization if at least 1 household contacts (HHC) have not received influenza vaccine within 6 months of screening and if all HHC screen negative for influenza infection. The main endpoints are assessed based on multiple respiratory swabs, obtained from both IP and HHC up to 9 (+/-1) days post IP randomization, and through the assessment of symptoms.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsInfluenza
CountriesBulgaria, China, Costa Rica, Greece, Hungary, India, Israel, Japan, Mexico, Poland, Puerto Rico, South Africa, Spain, Turkey (Türkiye), United Kingdom, United States
Collaborators--

Timeline

Phase 3CompletedFinished
2020202120222023202420252026
First PostedMay 31, 2019
Enrollment StartOct 10, 2019
Primary CompletionMay 10, 2024
TodayJul 2, 2026
Enrollment to primary: 4.6 yearsPosted 7.1 years ago

Interventions

Baloxavir Marboxildrug

IPs less than 12 years old will receive either 2 mg/kg (if weight less than 20 kg) or 40 mg (if weight more than or equal to 20 kg) of Baloxavir Marboxil as oral suspension. IPs more than or equal to 12 years old will receive either 40 mg (if weight less than 80 kg) or 80 mg (if weight more than or equal to 80 kg) of Baloxavir Marboxil as tablets. HHCs of IPs will not receive study medication.

Placebodrug

IPs less than 12 years old will receive placebo oral suspension and those above 12 years will receive placebo tablets. HHCs of IPs will not receive study medication.