New eczema gel shows promise in early trial

NCT ID NCT04992546

Completed Symptom relief Sponsor: Principia Biopharma, a Sanofi Company Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This study tested a new topical gel called PRN473 (SAR444727) in 39 adults with mild to moderate atopic dermatitis (eczema). Each participant had two similar patches of eczema treated: one with the study gel and one with a placebo gel, without knowing which was which. The main goals were to check safety and how the body processes the drug. The study lasted about 13 weeks and is now complete.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: PRN473 (SAR444727) topical gel
What this could lead to: If successful, this could lead to a new topical treatment option for mild to moderate eczema that is applied directly to the skin.
What could go wrong: This was a small, early-phase study (Phase 2a) with only 39 participants. The results may not apply to everyone, and the treatment may not prove effective in larger trials.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

atopic eczema

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ATOPIC DERMATITIS

Contacts and locations

Locations

California Allergy & Asthma Medical Group-Site Number:8400008

Los Angeles, California, 90025, United States
Center for Clinical Studies, LTD. LLP-Site Number:8400014

Houston, Texas, 77004, United States
Clinical Research Trials of Florida, Inc-Site Number:8400013

Tampa, Florida, 33607, United States
Collaborative Neuroscience Research-Site Number:8400004

Long Beach, California, 90806, United States
Florida International Research Center-Site Number:8400017

Miami, Florida, 33173, United States
Investigational Site Number :1240002

Québec, G1G 3Y8, Canada
Investigational Site Number :1240007

London, Ontario, N6H 5L5, Canada
Investigational Site Number :1240008

Hamilton, Ontario, L8L 3C3, Canada
J&S Studies-Site Number:8400015

Bryan, Texas, 77802, United States
Lenus Research & Medical Group-Site Number:8400006

Sweetwater, Florida, 33172, United States
Progressive Clinical Research-Site Number:8400002

San Antonio, Texas, 78213, United States
Remington Davis Inc-Site Number:8400012

Columbus, Ohio, 43215, United States

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