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Sanofi Pasteur, a Sanofi Company clinical trials

Source: ClinicalTrials.gov, U.S. National Library of Medicine — current trials in our USA and UK registers with Sanofi Pasteur, a Sanofi Company as lead sponsor. Synced 26 Sep 2026
8Current trials
3Recruiting now
11Drugs in these trials
2Trial registers
Maintained by Sreepriya Prasannan
MSc Digital Transformation of Life Sciences (Innopharma Education / Griffith College); MSc & BSc Botany HSE Spark Ignite 2026 — Top 14 finalist
Compiled from ClinicalTrials.gov and CTIS registry records · Last verified · Editorial standards
At a glance

Sanofi Pasteur, a Sanofi Company is the lead sponsor of 8 current clinical trials in our USA and UK registers. 3 are recruiting patients now. The most common phase is Phase 1/2. The drugs named most often in its trials are Acne mRNA vaccine, 20vPCV and Capvaxive. The most-studied condition is Healthy Volunteers.

Company profiles on this site (news, sites, medicines, approvals): Sanofi Ireland (IE) →Sanofi SA (FR) →

ClinicalTrials.gov trials by status

  • Recruiting338%
  • Active, closed563%

Trials by phase

  • Phase 1/2450%
  • Phase 3225%
  • Observational113%
  • Phase 2113%
01

Clinical trials sponsored by Sanofi Pasteur, a Sanofi Company

8 on ClinicalTrials.gov
StudyPhaseStatusStartRegisters
Observational, Passive Surveillance Program to Collect Information on Women and Their Offspring Exposed to MenQuadfi® During Pregnancy, in United States (US)
NCT04843111 · Meningococcal Infection
Observational Recruiting 2021-03 USA
Study to Evaluate Safety, Efficacy and Immunogenicity of Acne mRNA Vaccine in Adults With Moderate to Severe Acne
NCT06316297 · ClinicalTrials.gov ↗ · Acne
Phase 1/2 Recruiting 2024-04 USA
Study to Evaluate Safety, Efficacy and Immunogenicity of Acne mRNA Vaccine in Participants With Mild Acne
NCT07013747 · ClinicalTrials.gov ↗ · Acne
Phase 1/2 Recruiting 2025-07 USA
Study of the Safety and Immunogenicity of Catch-up Vaccination With a 21-valent Pneumococcal Conjugate Vaccine (PCV21) in Healthy Infants, Toddlers, Children, and Adolescents
NCT06838000 · Pneumococcal Infections
Phase 3 Active, closed 2025-02 USA
Study of a Human Metapneumovirus/Respiratory Syncytial Virus mRNA Vaccine Candidate Encapsulated in a Lipid Nanoparticle-based Formulation in Adults Aged 60 Years and Older
NCT06686654 · Human Metapneumovirus Immunization, Respiratory Syncytial Virus Immunization
Phase 1/2 Active, closed 2024-11 USA
Safety and Immunogenicity of an Investigational Pentavalent Meningococcal ABCYW Vaccine Against Meningococcal Disease in Children, Toddlers, and Infants
NCT06647407 · ClinicalTrials.gov ↗ · Meningococcal Immunization, Healthy Volunteers
Phase 1/2 Active, closed 2024-11 UK
Study on an Investigational Yellow Fever Vaccine Compared With YF-VAX in Adults in the USA
NCT04942210 · ClinicalTrials.gov ↗ · Yellow Fever, Healthy Volunteers
Phase 2 Active, closed 2021-07 USA
Study of a 4-Dose Regimen of a 21-valent Pneumococcal Conjugate Vaccine in Healthy Infants From Approximately 2 Months of Age
NCT06736041 · ClinicalTrials.gov ↗ · Pneumococcal Immunization
Phase 3 Active, closed 2024-12 USA

Registers list studies that are recruiting, about to open, active but closed to enrolment, or enrolling by invitation. The UK and USA registers cover industry-sponsored studies only. Titles and statuses are copied from the registry as published.

02

Drugs in Sanofi Pasteur, a Sanofi Company trials

11 compounds

Drugs and biologicals named as interventions in these trials, with the number of this sponsor's trials that name each one. Placebos and generic comparators are excluded.

03

Conditions in Sanofi Pasteur, a Sanofi Company trials

9 conditions
Healthy Volunteers2Acne2Meningococcal Immunization1Pneumococcal Infections1Meningococcal Infection1Human Metapneumovirus Immunization1Respiratory Syncytial Virus Immunization1Yellow Fever1Pneumococcal Immunization1
04

By trial register

RegisterTrialsRecruiting
Clinical trials in USA73
Clinical trials in UK10

A trial with sites in more than one country appears in each of those registers.

05

Other sponsors in Healthy Volunteers

SponsorTrials
Sanofi8
Vigonvita Life Sciences6
Bristol-Myers Squibb5
Hunan Kelun Pharmaceutical4
Shanghai Minwei Biotechnology3
Alnylam Pharmaceuticals2
Karuna Therapeutics, Inc., a Bristol Myers Squibb company2
American Laboratory Products Company2
Xidian University2
Technical University of Munich1

Sponsors with the most current trials registered for this condition.

06

Questions about Sanofi Pasteur, a Sanofi Company trials

How many clinical trials does Sanofi Pasteur, a Sanofi Company sponsor?

Sanofi Pasteur, a Sanofi Company is the lead sponsor of 8 current trials on ClinicalTrials.gov in our USA and UK registers, as of the registry sync on 26 September 2026. Completed and withdrawn studies are not counted.

Are Sanofi Pasteur, a Sanofi Company trials recruiting?

Yes. 3 of its 8 ClinicalTrials.gov trials are recruiting. Eligibility and site contacts are on each trial's record. Only the study team can confirm whether a patient is eligible.

Which drugs is Sanofi Pasteur, a Sanofi Company testing?

Its current trials name 11 drugs and biologicals as interventions. The most frequent are Acne mRNA vaccine (2), 20vPCV (1), Capvaxive (1), HMPV vaccine (1) and M-M-R II vaccine (1). The number in brackets is how many of its trials name each drug.

Where does this information come from?

Every trial, status, phase and condition on this page is copied from public ClinicalTrials.gov and EU CTIS records by a daily sync, grouped by the sponsor name each registry records. It says nothing about the organisation beyond its registered trials, and it is not medical advice.

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How this page is built

Everything on this page is copied from public registry records — it is not written from memory, and nothing here describes the organisation beyond its registered trials. Each trial links to its own record so you can check it yourself.

This page is built automatically: a daily sync job reads the registry records behind our trial registers and groups every current trial by its lead sponsor name, ignoring legal-form suffixes such as Inc. or Ltd. A small, hand-checked list joins the same organisation's different registry names (for example its EU legal entity). There is no AI drafting and no per-sponsor editorial pass. The “last verified” date above is the timestamp of that sync, not a review date. Our general editorial approach is described in our editorial standards and corrections policy. The the registries data on this page was last retrieved on 26 Sep 2026.

Please verify before you rely on this. This page is general information for life-science and pharmaceutical professionals. It is not medical advice, and it has not been reviewed by a clinician — our editorial team holds life-science qualifications, not clinical ones. It is not exhaustive and may not reflect the most recent label change. Always check the official prescribing information (US Prescribing Information or EU SmPC) and speak to your doctor or pharmacist before acting on anything here. Drugs in the same class are not automatically interchangeable, and approvals, brand names and indications differ between the US, the EU/Ireland (EMA/HPRA) and other regions. Spotted an error? Tell us — we correct promptly and log it.