Ireland
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Clinical Trials in the EU / 2025-521740-38-00
Authorised, not yet recruiting Phase I/II

A Phase I/II, randomized, placebo-controlled, multi-arm, dose-finding study to evaluate the safety, efficacy and immunogenicity of an Acne mRNA vaccine candidate in adults with moderate to severe acne 18 to 45 years of age

2025-521740-38-00 · tracked via the Priya Life Science EU tracker
Sponsor
Sanofi Vaccines US Inc
Sponsor type
Pharmaceutical company
Therapeutic area
Skin and Connective Tissue Diseases
Decision date
29/07/2026
Enrollment target
189
Sites
Spain, Germany, Poland

Condition studied

Acne

Investigational medicinal product(s)

Acne mRNA vaccineDiluent : 0,9% sodium chloride solution

Every trial of Acne mRNA vaccine across our registers →

Eligibility

Age group
18-64 years
Sex
Female, Male

Primary endpoint

Core Study - Sentinel Cohorts A and B: Number of participants with unsolicited systemic AEs, Core Study - Sentinel Cohorts A and B: Number of participants with solicited injection site and systemic reactions, Core Study - Sentinel Cohorts A and B: Number of participants with unsolicited AEs, Core Study - Sentinel Cohorts A and B: Number of participants with MAAEs, Core Study - Sentinel Cohorts A and B: Number of patients with SAEs, Core Study - Sentinel Cohorts A and B: Number of participants with AESIs, Core Study - Sentinel Cohorts A and B: Number of participants with out-of-range biological test results (including shift from baseline values), Core Study - Main Cohort A: Percentage change from baseline (Day 1) in the number of inflammatory acne lesions on face, Core Study - Main Cohort A: Percentage change from baseline (Day 1) in the number of non-inflammatory acne lesions on face, Core Study – Main Cohort B: Percentage change from baseline (Day 1) in the total number of acne lesions on face at, Long-Term Extension – Sentinel Cohorts A, B and Main Cohort: Number of participants with SAEs and AESIs

Endpoint detail

Core Study - Sentinel Cohorts A, B and Main Cohorts A and B: Assessment of vaccine-antigen-specific serum antibody titers, Core Study - Main Cohort A and B: Absolute and percentage change from baseline (Day 1) in the total number of acne lesions on face, Core Study - Main Cohorts A and B: Absolute and percentage change from baseline (Day 1) in the number of inflammatory acne lesions on face, Core Study - Main Cohorts A and B: Absolute change from baseline (Day 1) in the number of non-inflammatory acne lesions on face, Core Study - Main Cohorts: Absolute change from baseline in IGA score, Core Study - Main Cohorts A and B: Number of participants with unsolicited systemic AEs, Core Study - Main Cohorts A and B: Number of participants with solicited injection site and systemic reactions, Core Study - Main Cohorts A and B: Number of participants with unsolicited AEs, Core Study - Main Cohorts A and B: Number of participants with MAAEs, Core Study - Main Cohorts A and B: Number of participants with SAEs, Core Study - Main Cohorts A and B: Number of participants with AESIs, Cores Study - Main Cohorts A and B: Number of participants with out-of-range biological test results (including shift from baseline values)

Official registry record

This page summarises publicly available CTIS data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.

View 2025-521740-38-00 on CTIS ↗ ← All trials in the EU