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Acne mRNA vaccine

Phase 2

Acne | Vaccine | Dermatology |Sanofi|Last Updated: Aug 21, 2026

Target and mechanism

ModalityVaccine

Also known as Acne mRNA (messenger ribonucleic acid) vaccine

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials3
Total Enrollment1,438

FDA Designations

No designations recorded

Clinical trial landscape

Acne mRNA vaccine · 3 trials · 1 indication

Phase 2 1Phase 1 2
NCT07756957Safety of the Acne mRNA Vaccine in Adolescents 12 to 17 Years of Age With Moderate to Severe AcneAcne
NOT YET_RECRUITING410 Analytics
PHASE2NOT YET_RECRUITING
Safety of the Acne mRNA Vaccine in Adolescents 12 to 17 Years of Age With Moderate to Severe Acne
AcneUnlock trial analytics

Study Endpoints

Primary Endpoints

Unsolicited systemic AEs (Adverse Events)
30 minutes after each injection

Presence of unsolicited systemic adverse events (AEs) reported

Solicited injection site and systemic adverse reactions
8 days, including the day of each injection

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

Unsolicited AEs
28 days, including the day of each injection

Presence of unsolicited adverse events (AEs) reported

SAEs (Serious Adverse Events), MAAEs (Medically Attended Adverse Event), AESIs (Adverse Event of Special Interest) and AEs (Adverse Events) leading to study discontinuation
Up to 2 months after last injection

Presence of SAEs (Serious Adverse Events), MAAEs (Medically Attended Adverse Event), AESIs (Adverse Event of Special Interest) and AEs (Adverse Events) leading to study discontinuation

Out-of-range biological test results (including shift from baseline values)
Within 8 days after each injection, including the day of injection
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

Percentage change from baseline in total number of acne lesions on the face
At 2 months after last injection
SAEs (Serious Adverse Events), MAAEs (Medically Attended Adverse Event), AESIs (Adverse Event of Special Interest) and AEs (Adverse Events) leading to study discontinuation
Up to 13 months
Absolute and percentage change from baseline in the number of inflammatory acne lesions on the face
At 1 month after first injection until 9 months after last injection
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelSEQUENTIAL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Dose 1 sub-cohort - Group 1EXPERIMENTAL3 injections
Dose 1 sub-cohort - Group 2PLACEBO_COMPARATOR3 injections
Dose 2 sub-cohort - Group 3EXPERIMENTAL3 injections
Dose 2 sub-cohort - Group 4PLACEBO_COMPARATOR3 injections
Dose 3 sub-cohort - Group 5EXPERIMENTAL3 injections
Dose 3 sub-cohort - Group 6PLACEBO_COMPARATOR3 injections
Dose 1 main cohort - Group 7EXPERIMENTAL3 injections
Dose 2 main cohort - Group 8EXPERIMENTAL3 injections
Dose 3 main cohort - Group 9EXPERIMENTAL3 injections
Main cohort - Group 10PLACEBO_COMPARATOR3 injections
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 (messenger ribonucleic acid) vaccineBIOLOGICALIM injection
PlaceboBIOLOGICALIM injection
Acne mRNA vaccineBIOLOGICALPharmaceutical form: suspension for injection Route of administration: intramuscular
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Eligibility Criteria

Age Range12 Years to 17 Years
SexALL
Healthy VolunteersNo

Inclusion Criteria: * Aged 12 to 17 years on the day of the first study intervention administration * 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 ...

Countries:United StatesAustraliaCanadaPuerto Rico
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Competitive Landscape -Acne 9 trials

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Recent Changes (Last 90 Days)

LOWAug 21, 2026NCT06316297lastUpdatePostDate: changed
LOWAug 21, 2026NCT06316297lastUpdatePostDate: changed
LOWAug 11, 2026NCT07756957NEW_TRIAL: changed
LOWAug 11, 2026NCT07756957NEW_TRIAL: changed
LOWJul 27, 2026NCT06316297lastUpdatePostDate: changed
LOWJul 27, 2026NCT06316297lastUpdatePostDate: changed
LOWJul 27, 2026NCT06316297lastUpdatePostDate: changed
MEDIUMJul 9, 2026NCT07013747Enrollment: 120 → 228
MEDIUMJul 9, 2026NCT07013747Enrollment: 120 → 228

Frequently asked questions about Acne mRNA vaccine

What is the Acne mRNA vaccine?

The Acne mRNA vaccine is an investigational messenger ribonucleic acid (mRNA) vaccine being developed by Sanofi for the treatment of acne. It is designed as an immunotherapeutic approach to acne and is currently in clinical development, with Phase 2 status overall. It is not yet approved for any use.

What is the Acne mRNA vaccine used for?

The Acne mRNA vaccine is being studied for the treatment of acne, including mild, moderate, and severe forms. Clinical trials have enrolled adolescents and adults with acne. It is an investigational product and has not been approved for any indication.

Who makes the Acne mRNA vaccine?

The Acne mRNA vaccine is being developed by Sanofi, which trades under the ticker SNY. Sanofi is the sponsor of the clinical trials evaluating the vaccine in acne.

What phase is the Acne mRNA vaccine in?

The Acne mRNA vaccine is in Phase 2 clinical development. Sanofi is running three trials in total, all currently active, with a combined planned enrollment of 1,438 participants. The vaccine remains investigational and has not been approved by the FDA.

What clinical trials is the Acne mRNA vaccine in?

Three trials are evaluating the Acne mRNA vaccine: NCT07756957, a Phase 2 study in adolescents aged 12 to 17 with moderate to severe acne that is not yet recruiting; NCT07013747, a Phase 1 study in adults with mild acne that is recruiting in the United States; and NCT06316297, a Phase 1 study in adults with moderate to severe acne recruiting in the United States, Australia, Canada, and Puerto Rico.

Is the Acne mRNA vaccine the same as Acne mRNA (messenger ribonucleic acid) vaccine?

Yes, the Acne mRNA vaccine and Acne mRNA (messenger ribonucleic acid) vaccine refer to the same investigational product from Sanofi. The longer name simply spells out mRNA as messenger ribonucleic acid. Both names describe the same vaccine candidate being studied in acne.