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Alopecia AreataMay 2022Summary reviewed May 2026

A Daily Pill Restored Near-Full Hair Growth in 35% of People With Alopecia Areata

BRAVE-AA1 and BRAVE-AA2 tested baricitinib, a daily pill, in 1,200 adults with severe alopecia areata who had lost at least half their scalp hair. After 36 weeks, more than a third of people on the higher dose had near-full scalp regrowth.

What the trial was testing

The BRAVE-AA1 enrolled 1,200 patients with alopecia areata. The study was sponsored by Eli Lilly and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

It was a large trial designed to confirm whether the treatment works well enough for wider use. Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.

What the results showed

35% had near-full scalp regrowth after 36 weeks on the higher dose.

New England Journal of Medicine · 2022 · NCT03899259

These findings — that had near-full scalp hair regrowth at 36 weeks on the higher baricitinib dose — were published in the New England Journal of Medicine and represent the headline result of the study.

Researchers tracked outcomes across 1,200 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with alopecia areata, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

Baricitinib (Olumiant) is FDA-approved for severe alopecia areata in adults and available now. It can take several months to see meaningful regrowth, and hair often falls out again if the medication is stopped. Side effects include increased risk of infections and lab changes; regular monitoring is required. Ask a dermatologist whether it fits your case.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.