A Study on the Safety and Immunogenicity of Influenza, Respiratory Syncytial Virus, Human Metapneumovirus and Parainfluenza Vaccines in Adults 18 to 49 Years of Age.

NCT ID: NCT06850051

Last Updated: 2025-12-18

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

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE1

Total Enrollment

270 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-03-19

Study Completion Date

2026-01-31

Brief Summary

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The objective of this study is to evaluate the safety and immunogenicity of different vaccines of hemagglutinin formulations of trivalent influenza vaccine or of a combined respiratory syncytial virus / human metapneumovirus / parainfluenza virus type 3 vaccine in healthy participants 18 to 49 years of age. A lipid nanoparticle will be used in this study.

Overall, the study is designed to:

* Assess the safety profile of the candidate formulations
* Describe the immunogenicity profile of the candidate formulations
* Eligible participants will be randomized to receive a single intramuscular injection of either one of the vaccine formulations.

Participants will be provided with a diary to solicit reporting of injection site reactions and systemic reactions, unsolicited Adverse Events (AEs), Serious Adverse Events (SAEs) and Adverse Events of Special Interest AESIs).

Participants will also be required to record their daily temperature on the diary.

Detailed Description

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The duration of study participation will be approximately 6 months for each participant.

Conditions

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Healthy Volunteers Influenza Vaccination Respiratory Syncytial Virus Vaccination Parainfluenza Vaccination Human Metapneumovirus Vaccination

Keywords

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influenza respiratory syncytial virus parainfluenza human metapneumovirus

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Group 1 trivalent influenza vaccine-hemagglutinin (TIV-HA) formulation 1 at high dose

Participants will receive a single IM (Intramuscular) injection on day 1 of the TIV-HA vaccines according to their randomization schedule.

Group Type EXPERIMENTAL

TIV-HA formulation 1 at high dose

Intervention Type BIOLOGICAL

Suspension for injection in a vial. Route of administration: IM injection

Group 2 TIV-HA formulation 2 at high dose

Participants will receive a single IM (Intramuscular) injection on day 1 of the TIV-HA vaccines according to their randomization schedule.

Group Type EXPERIMENTAL

TIV-HA formulation 2 at high dose

Intervention Type BIOLOGICAL

Suspension for injection in a vial. Route of administration: IM injection

Group 3 TIV-HA formulation 1 at low dose

Participants will receive a single IM (Intramuscular) injection on day 1 of the TIV-HA vaccines according to their randomization schedule.

Group Type EXPERIMENTAL

TIV-HA Vaccine formulation 1 at low dose

Intervention Type BIOLOGICAL

Suspension for injection in a vial. Route of administration: IM injection

Group 4 TIV-HA formulation 2 at low dose

Participants will receive a single IM (Intramuscular) injection on day 1 of the TIV-HA vaccines according to their randomization schedule.

Group Type EXPERIMENTAL

TIV-HA formulation 2 at low dose

Intervention Type BIOLOGICAL

Suspension for injection in a vial. Route of administration: IM injection

Group 5 RSV/hMPV/PIV3 formulation 1 at high dose

Participants will receive a single IM (Intramuscular) injection on day 1 of the RSV/hMPV/PIV3 vaccines according to their randomization schedule.

Group Type EXPERIMENTAL

RSV/hMPV/PIV3 formulation 1 at high dose

Intervention Type BIOLOGICAL

Suspension for injection in a vial. Route of administration: IM injection

Group 6 RSV/hMPV/PIV3 formulation 2 at high dose

Participants will receive a single IM (Intramuscular) injection on day 1 of the RSV/hMPV/PIV3 vaccines according to their randomization schedule.

Group Type EXPERIMENTAL

RSV/hMPV/PIV3 formulation 2 at high dose

Intervention Type BIOLOGICAL

Suspension for injection in a vial. Route of administration: IM injection

Group 7 RSV/hMPV/PIV3 formulation 1 at low dose

Participants will receive a single IM (Intramuscular) injection on day 1 of the RSV/hMPV/PIV3 vaccines according to their randomization schedule.

Group Type EXPERIMENTAL

RSV/hMPV/PIV3 formulation 1 at low dose

Intervention Type BIOLOGICAL

Suspension for injection in a vial. Route of administration: IM injection

Group 8 RSV/hMPV/PIV3 formulation 2 at low dose

Participants will receive a single IM (Intramuscular) injection on day 1 of the RSV/hMPV/PIV3 vaccines according to their randomization schedule.

Group Type EXPERIMENTAL

RSV/hMPV/PIV3 formulation 2 at low dose

Intervention Type BIOLOGICAL

Suspension for injection in a vial. Route of administration: IM injection

Group 9 recombinant influenza vaccine quadrivalent (RIV4)

Participants will receive a single IM (Intramuscular) injection on day 1 of the RIV4 vaccine according to their randomization schedule.

Group Type ACTIVE_COMPARATOR

RIV4 (Supemtek®)

Intervention Type BIOLOGICAL

Solution for injection in a prefilled syringe. Route of administration: IM injection

Interventions

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TIV-HA Vaccine formulation 1 at low dose

Suspension for injection in a vial. Route of administration: IM injection

Intervention Type BIOLOGICAL

TIV-HA formulation 1 at high dose

Suspension for injection in a vial. Route of administration: IM injection

Intervention Type BIOLOGICAL

TIV-HA formulation 2 at low dose

Suspension for injection in a vial. Route of administration: IM injection

Intervention Type BIOLOGICAL

TIV-HA formulation 2 at high dose

Suspension for injection in a vial. Route of administration: IM injection

Intervention Type BIOLOGICAL

RSV/hMPV/PIV3 formulation 2 at low dose

Suspension for injection in a vial. Route of administration: IM injection

Intervention Type BIOLOGICAL

RSV/hMPV/PIV3 formulation 1 at high dose

Suspension for injection in a vial. Route of administration: IM injection

Intervention Type BIOLOGICAL

RSV/hMPV/PIV3 formulation 2 at high dose

Suspension for injection in a vial. Route of administration: IM injection

Intervention Type BIOLOGICAL

RSV/hMPV/PIV3 formulation 1 at low dose

Suspension for injection in a vial. Route of administration: IM injection

Intervention Type BIOLOGICAL

RIV4 (Supemtek®)

Solution for injection in a prefilled syringe. Route of administration: IM injection

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Aged 18 to 49 years on the day of inclusion
* A female participant is eligible to participate if she is not pregnant or breastfeeding and one of the following conditions applies:

* Is of non-childbearing potential. To be considered of non-childbearing potential, a female must be post-menopausal for at least 1 year, or surgically sterile OR
* Is of childbearing potential and agrees to use an effective contraceptive method or abstinence from at least 4 weeks prior to study intervention administration until at least 4 weeks after study intervention administration.

Exclusion Criteria

\- Any medical condition or circumstance which, in the opinion of the investigator, might interfere with the evaluation of the study objectives

Note: The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.
Minimum Eligible Age

18 Years

Maximum Eligible Age

49 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Sanofi

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Clinical Sciences & Operations

Role: STUDY_DIRECTOR

Sanofi

Locations

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Paratus Clinical

Blacktown, New South Wales, Australia

Site Status

Paratus Clinical

Herston, Queensland, Australia

Site Status

University of Sunshine Coast Clinical Trials

Morayfield, Queensland, Australia

Site Status

University of Sunshine Coast Clinical Trials

South Brisbane, Queensland, Australia

Site Status

Griffith University

Southport, Queensland, Australia

Site Status

Emeritus Research

Camberwell, Victoria, Australia

Site Status

Countries

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Australia

Other Identifiers

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VAV00030

Identifier Type: -

Identifier Source: org_study_id

U1111-1311-1743

Identifier Type: OTHER

Identifier Source: secondary_id