A Surveillance Study of Susceptibility to Baloxavir Marboxil in Pediatric Participants With Influenza and Transmission of Influenza to Household Contacts

NCT ID: NCT06094010

Last Updated: 2026-01-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE3

Total Enrollment

750 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-11-22

Study Completion Date

2027-06-30

Brief Summary

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This study consists of two parts: Part A Surveillance and Part B Transmission.

The main purpose of Part A is to evaluate the prevalence of pre-dose and treatment-emergent amino acid substitutions in pediatric participants' susceptibility \<12 years with influenza treated with baloxavir marboxil.

Part B will include a subset of Part A participants who have household contacts (HHCs) recruited to the study. Part B will evaluate the incidence of onward influenza transmission from pediatric index participants (IPs) under 5 years of age and those aged 5 to under 12 years, treated with baloxavir marboxil, to their HHCs.

Detailed Description

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Conditions

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Influenza

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Baloxavir Marboxil

Participants will receive a single oral dose of baloxavir marboxil on Day 1 (based on body weight and age). HHCs related to IPs will be enrolled but will not receive treatment.

Group Type EXPERIMENTAL

Baloxavir Marboxil

Intervention Type DRUG

Baloxavir marboxil will be administered as an oral suspension per body weight (≥80 kilograms (kg): 80 milligrams (mg); ≥20 kg to \< 80 kg: 40 mg; \<20 kg: 2 mg/kg).

Interventions

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Baloxavir Marboxil

Baloxavir marboxil will be administered as an oral suspension per body weight (≥80 kilograms (kg): 80 milligrams (mg); ≥20 kg to \< 80 kg: 40 mg; \<20 kg: 2 mg/kg).

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Participants with symptoms suggestive of influenza based on investigator's judgement with diagnosis confirmed by a positive local influenza test within 24 hours before full study screening
* Participants with a negative severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) test within 48 hours before full study screening
* Time interval between onset of influenza symptoms and the pre-dose examinations at screening is 48 hours or less


\[A\] IP:

* Eligible to take part in Part A
* Lives in a household with a HHC willing to be recruited as full household contact

\[B\] HHCs:

\- Each HHC living in the home of an IP at the time of IP treatment must be screened for partial or full-study HHC eligibility

\[C\] Partial HHC:

* Starts screening within 1 calendar day after IP treatment
* Negative influenza and SARS-CoV-2 test at screening after IP's treatment with baloxavir marboxil
* HHC lives in a household where 1 or more HHCs meet the full-study HHC requirements AND at least 1 full-study HHC has not received the influenza vaccine within 6 months prior to screening
* HHC lives in a household where 1 or more HHCs meet the full-study HHC requirements AND at least 1 full-study HHC has not received the influenza vaccine within 6 months prior to screening.
* HHC lives with other HHCs (if applicable) who fulfill all the "Partial household contact" criteria

\[D\] Full-study HHC:

* Fulfills the "Partial household contact" criteria
* Agrees to participate in the full study
* Will reside in the IP's house for at least 12 of the next 15 days and will be present for scheduled study visits
* No influenza symptoms within 7 days prior to screening
* Does not have a moderate or worse active infections OR infections requiring systemic or otherwise internally administered or otherwise internally administered antibiotic/antiviral/antifungal therapy

Exclusion Criteria

* Participants with severe influenza virus infection requiring inpatient treatment
* Severely immunocompromised participants \[including participants receiving immunosuppressant therapy, or those with cancer or human immunodeficiency virus (HIV) infection\] as defined by the investigator
* Participants with concurrent (non-influenza) infections requiring systemic anti-microbial and/or anti-viral therapy at the pre-dose examinations
* Treatment with baloxavir marboxil, peramivir, laninamivir, oseltamivir, zanamivir, rimantadine, umifenovir or amantadine within 30 days prior to screening
* Treatment with an investigational influenza-specific monoclonal antibody within 6 months or 5 half-lives, whichever is longer, prior to screening
* Treatment with an investigational therapy within 30 days or 5 half-lives, whichever is longer, prior to screening
* Known hypersensitivity to baloxavir marboxil or the drug product excipients
* Females who have commenced menarche (i.e., child-bearing potential)


* IPs who fulfill an exclusion criterion for Part A
* HHCs deemed to require influenza post-exposure prophylaxis with influenza antiviral treatment due to their risk of developing influenza-related complications in accordance with local guidelines or clinical practice
* HHCs diagnosed with influenza by health care professional in the past 4 weeks
Minimum Eligible Age

3 Weeks

Maximum Eligible Age

11 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Hoffmann-La Roche

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Clinical Trials

Role: STUDY_DIRECTOR

Hoffmann-La Roche

Locations

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Central Alabama Research

Birmingham, Alabama, United States

Site Status RECRUITING

Harrisburg Family Medical Center

Harrisburg, Arkansas, United States

Site Status RECRUITING

Kendall South Medical Center Inc.

Miami, Florida, United States

Site Status RECRUITING

Avanza Medical Research Center

Pensacola, Florida, United States

Site Status RECRUITING

Tekton Research - Chamblee Georgia

Chamblee, Georgia, United States

Site Status WITHDRAWN

Tekton Research Lawrenceville

Lawrenceville, Georgia, United States

Site Status WITHDRAWN

Velocity Clinical Research at Primary Pediatrics Macon

Macon, Georgia, United States

Site Status COMPLETED

Clinical Research Prime

Idaho Falls, Idaho, United States

Site Status RECRUITING

Mishawaka Osteopathic Clinic

Mishawaka, Indiana, United States

Site Status RECRUITING

Kentucky Pediatric Research Center

Bardstown, Kentucky, United States

Site Status RECRUITING

Velocity Clinical Research Lafayette

Lafayette, Louisiana, United States

Site Status RECRUITING

Velocity Clinical Research, Slidell

Slidell, Louisiana, United States

Site Status COMPLETED

Velocity Clinical Research, Grand Island

Grand Island, Nebraska, United States

Site Status RECRUITING

Machuca Family Medicine

Las Vegas, Nevada, United States

Site Status RECRUITING

Ohio Pediatric Research Association

Dayton, Ohio, United States

Site Status RECRUITING

Helios Clinical Research, Inc (former Ventavia Research Group)

Middleburg Heights, Ohio, United States

Site Status RECRUITING

Frontier Clinical Research

Smithfield, Pennsylvania, United States

Site Status RECRUITING

Coastal Pediatric Research

Charleston, South Carolina, United States

Site Status RECRUITING

Tekton Research - Beaumont

Beaumont, Texas, United States

Site Status RECRUITING

Oak Cliff Research Company, LLC

Dallas, Texas, United States

Site Status ACTIVE_NOT_RECRUITING

Mercury Clinical Research

Houston, Texas, United States

Site Status RECRUITING

Pioneer Research Solutions

Houston, Texas, United States

Site Status RECRUITING

Oak Cliff Research Company, LLC

Richardson, Texas, United States

Site Status RECRUITING

Sun Research Institute

San Antonio, Texas, United States

Site Status WITHDRAWN

Tekton Research

San Antonio, Texas, United States

Site Status COMPLETED

Siena Research Network

Sugar Land, Texas, United States

Site Status RECRUITING

Velocity Clinical Research, Salt Lake City

West Jordan, Utah, United States

Site Status RECRUITING

Frontier Clinical Research, LLC

Kingwood, West Virginia, United States

Site Status ACTIVE_NOT_RECRUITING

Medical Centre "Asklepii", OOD

Dupnitsa, , Bulgaria

Site Status WITHDRAWN

MHAT " St. Ivan Rilski " Kozloduy

Kozloduy, , Bulgaria

Site Status RECRUITING

MHAT Stamen Iliev AD

Montana, , Bulgaria

Site Status WITHDRAWN

MHAT City Clinic - Saint George

Montana, , Bulgaria

Site Status RECRUITING

SHATPPD Dr. Dimitar Gramatikov, Ruse Ltd.

Rousse, , Bulgaria

Site Status WITHDRAWN

MHAT Sliven - Military Medial Academy

Sliven, , Bulgaria

Site Status RECRUITING

AGPSMP Pediatric diseases South park OOD

Sofia, , Bulgaria

Site Status RECRUITING

Medical Center Hera Sofia

Sofia, , Bulgaria

Site Status COMPLETED

NZOZ Salmed

??czna, , Poland

Site Status RECRUITING

Centrum Medyczne K2J2

?ód?, , Poland

Site Status COMPLETED

IN VIVO Sp. z o.o.

Bydgoszcz, , Poland

Site Status RECRUITING

NZOZ Vitamed

Bydgoszcz, , Poland

Site Status RECRUITING

Centrum Medyczne Pratia Cz?stochowa

Cz?stochowa, , Poland

Site Status RECRUITING

Niepubliczny Zaklad Opieki Zdrowotnej "Amed"

Grójec, , Poland

Site Status RECRUITING

Vita Longa Sp. z o.o.

Katowice, , Poland

Site Status RECRUITING

NZLA Michalkowice Rybarczyk i partnerzy, Spolka Lekarska

Siemianowice ?l?skie, , Poland

Site Status RECRUITING

Jaroslaw Kierkus Prywatna Prakyka Lekarska

Warsaw, , Poland

Site Status RECRUITING

Centrum Medyczne K2J2

Wo?omin, , Poland

Site Status WITHDRAWN

Vistamed & Vertigo Spó?Ka Z Ograniczon? Odpowiedzialno?Ci?

Wroc?aw, , Poland

Site Status RECRUITING

Complejo Hospitalario Universitario de Santiago (CHUS)

Santiago de Compostela, LA Coruna, Spain

Site Status WITHDRAWN

Hospital Infantil Universitario Nino Jesus

Madrid, , Spain

Site Status WITHDRAWN

Hospital Universitario 12 de Octubre

Madrid, , Spain

Site Status WITHDRAWN

Hospital Universitari i Politècnic La Fe

Valencia, , Spain

Site Status COMPLETED

Countries

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United States Bulgaria Poland Spain

Central Contacts

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Reference Study ID Number: CV44536 https://forpatients.roche.com/

Role: CONTACT

888-662-6728 (U.S. Only)

Other Identifiers

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2023-504672-22-00

Identifier Type: CTIS

Identifier Source: secondary_id

CV44536

Identifier Type: -

Identifier Source: org_study_id

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