Study summary
Hair loss returned for most people who stopped baricitinib
80%lost benefit after stopping, vs 7% who continued
What was tested
People whose hair regrew on baricitinib were switched to placebo or kept on the drug, and those who relapsed were retreated.
What they found
- 80% of those switched to placebo lost their regrowth by week 152, vs 7% who continued.
- Most who restarted regained it (63% to 87.5%).
What it means
JAK pills generally need to be continued long term.
Last reviewed 2026-11-14 by the Find a Trial editorial team.
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