Hair Loss Profiles and Ritlecitinib Efficacy in Patients with Alopecia Areata: Post Hoc Analysis of the Allegro Phase 2b/3 Study

Ritlecitinib and PP405 show promise for hair regrowth. Diagnosing the cause of hair loss is crucial before treatment.

Minoxidil and finasteride are the only FDA-approved treatments for androgenetic alopecia, while newer treatments like clascoterone, PP405, NV-623/624, AMP-303, and RU58841 are still experimental with varying levels of evidence. Clascoterone shows the most promise due to strong human data, while AMP-303 has notable early human trial results; RU58841 lacks human data and remains experimental.

PP405 is the most promising future treatment for hair loss, aiming to reactivate dormant hair follicles. Clascoterone 5% is the most promising near-term drug, while current strategies include using finasteride or dutasteride to stabilize hair loss and minoxidil to stimulate growth.

An arthritis drug, baricitinib, is discussed as a potential treatment for autoimmune alopecia, not androgenetic alopecia. Ritlecitinib is also mentioned as a possible treatment for scarring alopecia.

Promising hair loss treatments in clinical trials include Pyrilutamide, GT20029, CB-03-01, and PP405, with potential market releases between 2027 and 2029. Hair cloning remains experimental and expensive, while existing treatments like finasteride, minoxidil, and microneedling continue to be used.