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Acne mRNA vaccine

Phase 1

Acne | Monoclonal antibody | Dermatology |Sanofi|Last Updated: Jul 27, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials2
Total Enrollment1,028

FDA Designations

No designations recorded

Clinical trial landscape

Acne mRNA vaccine · 2 trials · 1 indication

Phase 1 2
NCT07013747Study to Evaluate Safety, Efficacy and Immunogenicity of Acne mRNA Vaccine in Participants With Mild AcneAcne
RECRUITING228 Analytics
NCT06316297Study to Evaluate Safety, Efficacy and Immunogenicity of Acne mRNA Vaccine in Adults With Moderate to Severe AcneAcne
RECRUITING800 Analytics
PHASE1RECRUITING
Study to Evaluate Safety, Efficacy and Immunogenicity of Acne mRNA Vaccine in Participants With Mild Acne
AcneUnlock trial analytics
PHASE1RECRUITING
Study to Evaluate Safety, Efficacy and Immunogenicity of Acne mRNA Vaccine in Adults With Moderate to Severe Acne
AcneUnlock trial analytics

Study Endpoints

Primary Endpoints

Core Study - Sentinel Cohort Arm 1 and 2: Number of participants with unsolicited systemic adverse events (AEs)
In 30 minutes after each administration
Core Study - Sentinel Cohort Arm 1 and 2: Number of participants with solicited injection site and systemic reactions
Up to 7 days after each administration

pre-listed in the participant diary \[PDi\] and in the case report form \[CRF\]

Core Study - Sentinel Cohort Arm 1 and 2: Number of participants with unsolicited AEs reported
Up to 28 days after each administration
Core Study - Sentinel Cohort Arm 1 and 2: Number of participants with medically attended adverse events (MAAEs)
Up to 6 months after each administration
Core Study - Sentinel Cohort Arm 1 and 2: Number of participants with AEs of special interest (AESIs)
Up to 6 months after each administration
Core Study - Sentinel Cohort Arm 1 and 2: Number of participants with serious AEs (SAEs)
Up to 6 months after each administration

Presence of all SAEs

Core Study - Sentinel Cohort Arm 1 and 2: Number of participants with out-of-range biological test results
Through 7 days after administration (Day 08)

Presence of out-of-range biological test results (including shift from baseline values)

Core Study - Main Cohort Arm 1 and 2: Percentage change from baseline (Day 01) in the number of inflammatory acne lesions on face
At 2 months post last administration
Core Study - Main Cohort Arm 1 and 2: Percentage change from baseline (Day 01) in the number of non-inflammatory acne lesions on face
At 2 months post last administration
Long-Term Extension - Sentinel and Main Cohort Arm 1 and 2: Number of participants with serious adverse events (SAEs) and adverse events of special interest (AESIs)
Up to 38 months after first administration

Presence of all SAEs and AESIs

Core Study - Sentinel Cohorts A and B: Number of participants with unsolicited systemic AEs
30 minutes after each administration

Presence of unsolicited systemic adverse events (AEs) reported

Core Study - Sentinel Cohorts A and B: Number of participants with solicited injection site and systemic reactions
Up to 7 days after each administration

Presence of solicited injection site and systemic reactions (ie, pre-listed in the participant diary \[PDi\] and in the case report form \[CRF\])

Core Study - Sentinel Cohorts A and B: Number of participants with unsolicited AEs
Up to 28 days after each administration
Core Study - Sentinel Cohorts A and B: Number of participants with MAAEs
Up to 6 months after each administration

Presence of medically attended adverse events (MAAEs)

Core Study - Sentinel Cohorts A and B: Number of participants with SAEs
Up to 6 months after each administration

Presence of all serious adverse events (SAEs)

Core Study - Sentinel Cohorts A and B: Number of participants with AESIs
Up to 6 months after each administration

Presence of AEs of special interest (AESIs)

Core Study - Sentinel Cohorts A and B: Number of participants with out-of-range biological test results (including shift from baseline values)
Through 7 days after administration (Day 8)
Core Study - Main Cohort A: Percentage change from baseline (Day 1) in the number of inflammatory acne lesions on face
At 2 months post last administration
Core Study - Main Cohort A: Percentage change from baseline (Day 1) in the number of non-inflammatory acne lesions on face
At 2 months post last administration
Core Study - Main Cohort B: Percentage change from baseline (Day 1) in the total number of acne lesions on face at
At 2 months post last administration
Long-Term Extension - Sentinel Cohorts A, B and Main Cohort: Number of participants with SAEs and AESIs
Up to 38 or 40 months after first administration

Presence of all serious adverse events (SAEs) and adverse events of special interest (AESIs)

Secondary Endpoints

Core Study - Sentinel and Main Cohort Arm 1 and 2: Vaccine-antigen-specific serum antibody titers
From baseline (Day 01) to 6 months post last administration
Core Study - Main Cohort Arm 1 and 2: Absolute change from baseline (Day 01) in the number of inflammatory acne lesions on face
At 1 month post first administration to 6 months post last administration
Core Study - Main Cohort Arm 1 and 2: Percentage change from baseline (Day 01) in the number of inflammatory acne lesions on face
At 1 month post first administration to 6 months post last administration
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Sentinel Cohort Arm 1EXPERIMENTALParticipants will receive 2 Acne mRNA Vaccine injections
Sentinel Cohort Arm 2PLACEBO_COMPARATORParticipants will receive 2 Placebo injections
Main Cohort Arm 1EXPERIMENTALParticipants will receive 2 Acne mRNA Vaccine injections
Main Cohort Arm 2PLACEBO_COMPARATORParticipants will receive 2 Placebo injections
Sentinel Cohort A - ExperimentalEXPERIMENTALTwo administrations of the Acne mRNA vaccine will be injected in three increasing doses
Sentinel Cohort A - PlaceboPLACEBO_COMPARATORTwo administrations of placebo will be injected
Sentinel Cohort B - ExperimentalEXPERIMENTALThree administrations of the Acne mRNA vaccine will be injected in two increasing doses
Sentinel Cohort B - PlaceboPLACEBO_COMPARATORThree administrations of placebo will be injected
Main Cohort A - ExperimentalEXPERIMENTALTwo administrations of the Acne mRNA vaccine will be injected in three increasing doses
Main Cohort A - PlaceboPLACEBO_COMPARATORTwo administrations of placebo will be injected
Main Cohort B - ExperimentalEXPERIMENTALThree administrations of the Acne mRNA vaccine will be injected in two increasing doses
Main Cohort B - PlaceboPLACEBO_COMPARATORThree administrations of placebo will be injected

Interventions

NameTypeDescription
Acne mRNA vaccineBIOLOGICALPharmaceutical form: suspension for injection Route of administration: intramuscular
PlaceboOTHERPharmaceutical form: liquid solution for injection Route of administration: intramuscular
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Eligibility Criteria

Age Range18 Years to 45 Years
SexALL
Healthy VolunteersNo
Study Sites4

Inclusion Criteria: * Participants who are overtly healthy as determined by medical evaluation including medical history, physical examination, and laboratory tests as judged by the investigator * Clinical diagnosis of mild facial acne vulgaris with: * IGA score of mild (grade 2 on the 5-grade I...

Countries:United StatesAustraliaCanadaPuerto Rico
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Recent Changes (Last 90 Days)

LOWJul 27, 2026NCT06316297lastUpdatePostDate: changed
LOWJul 27, 2026NCT06316297lastUpdatePostDate: changed
LOWJul 27, 2026NCT06316297lastUpdatePostDate: changed
MEDIUMJul 9, 2026NCT07013747Enrollment: 120 → 228
MEDIUMJul 9, 2026NCT07013747Enrollment: 120 → 228
LOWMay 26, 2026NCT06316297Enrollment: 260 → 800
LOWMay 26, 2026NCT07013747primaryCompletionDate: changed
LOWMay 24, 2026NCT06316297studyFirstPostDate: changed
LOWMay 24, 2026NCT07013747studyFirstPostDate: changed

Frequently asked questions about Acne mRNA vaccine

What is the Acne mRNA vaccine used for?

The Acne mRNA vaccine is an investigational vaccine being developed for acne. It is being studied in adults with moderate to severe acne and in participants with mild acne. The vaccine is in Phase 1 clinical development and is not yet approved by the FDA.

Who makes the Acne mRNA vaccine?

Sanofi (ticker: SNY) is developing the Acne mRNA vaccine. The company is conducting Phase 1 clinical trials to evaluate the vaccine's safety, efficacy, and immunogenicity in adults with acne.

What phase is the Acne mRNA vaccine in?

The Acne mRNA vaccine is in Phase 1 clinical development. It is an investigational vaccine and has not been approved by the FDA. Two Phase 1 trials are currently recruiting participants to study the vaccine in adults with acne.

What clinical trials is the Acne mRNA vaccine in?

The Acne mRNA vaccine is being studied in two Phase 1 trials. NCT06316297 evaluates the vaccine in adults with moderate to severe acne, with an enrollment of 800 participants across the United States, Australia, Canada, and Puerto Rico. NCT07013747 evaluates the vaccine in participants with mild acne, with an enrollment of 228 participants in the United States.

Is the Acne mRNA vaccine a monoclonal antibody?

The Acne mRNA vaccine is classified as a monoclonal antibody modality, though it is described as an mRNA vaccine. It is being developed by Sanofi for the treatment of acne. The vaccine is in Phase 1 clinical trials and is not yet approved.