research Efficacy and safety of ritlecitinib, an oral JAK3/TEC family kinase inhibitor, in adolescent and adult patients with alopecia totalis and alopecia universalis
This study evaluated the effectiveness and safety of ritlecitinib in patients aged 12 or older with alopecia totalis or universalis, finding higher hair regrowth response rates compared to placebo at 24 weeks, with continued improvement and acceptable safety through 48 weeks.

