Monday, March 30, 2026
Phase 3 trial tests low-dose IL-2 for severe alopecia areata, results pending
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Phase 3 trial tests low-dose IL-2 for severe alopecia areata, results pending

Plain Language Summary
What this means for you:
A large trial tested IL-2 for hair loss, but results are not yet available.

Researchers conducted a Phase 3 clinical trial to test a potential treatment for severe alopecia areata, a condition that causes patchy hair loss. The study involved 44 patients across multiple medical centers. They compared low doses of a medication called IL-2 against a placebo to see which was better at promoting long-term hair regrowth, measured by a score called SALT.

This was a major, late-stage trial designed to provide clear answers. However, the specific results from this study—like how many patients saw hair regrowth or how well the treatment worked compared to the placebo—are not yet available. The study was randomized and double-blind, which are strong methods to ensure fair testing.

Because this was a Phase 3 trial, its findings are important for determining if this treatment could become a widely available option. However, with no results reported, we cannot draw any conclusions about its effectiveness or safety. Readers should know that a treatment is not proven until final results from such a trial are published and reviewed.

What this means for you:
A large trial tested IL-2 for hair loss, but results are not yet available.
Read the Full Clinical Summary →
View Original Abstract ↓
Status: COMPLETED | Phase: PHASE3 Condition(s): Alopecia Areata Intervention(s): IL2 (DRUG), placebo (DRUG) In a prospective pilot study the investigators showed that low doses of IL2 could be beneficial for severe AA inducing a long lasting regrowth in 4 out of the 5 patients treated. The objective of this study is to compare the long term efficacy of low doses of IL2 versus placebo in a multicenter prospective randomized double blind study. Primary Outcome(s): Score Salt Enrollment: 44 (ACTUAL) Lead Sponsor: Centre Hospitalier Universitaire de Nice Start: 2015-12-15 | Primary Completion: 2019-02-02