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Review
. 2024 May;33(5):441-449.
doi: 10.1080/13543784.2024.2348062. Epub 2024 May 20.

Novel investigational drugs for alopecia areata and future perspectives

Affiliations
Review

Novel investigational drugs for alopecia areata and future perspectives

Ivana Chim et al. Expert Opin Investig Drugs. 2024 May.

Abstract

Introduction: Alopecia areata (AA) is an immune-mediated disease that causes non-scarring hair loss. While acute, solitary patches often spontaneously remit, developing secondary patches or failure of the disease to resolve within 6-12 months predicts a poor prognosis, with an increased risk of alopecia totalis or universalis. Chronic AA increases the risk of depression and suicidality and reduces quality of life. Treatment options for chronic or acute diffuse AA were previously limited to corticosteroids and traditional immunomodulators. Two Janus Kinase (JAK) inhibitors are now approved for the treatment of chronic AA.

Areas covered: The results of landmark phase 3 trials for three JAK inhibitors, baricitinib, ritlecitinib, and deuruxolitinib are discussed. Evidence for other JAK inhibitors, biologics, and phosphodiesterase-4 inhibitors are also presented. Therapies currently undergoing clinical trials are listed.

Expert opinion: JAK inhibitors are a safe and efficacious treatment of moderate-to-severe AA. Early intervention, regardless of severity, allows for improved treatment efficacy. It is uncertain how long patients should remain on JAK inhibitors; discontinuation often leads to relapse. A black-box warning for JAK inhibitors was extrapolated from safety data in a rheumatoid arthritis cohort; recent meta-analyses of JAK inhibitors used in dermatology cohorts do not demonstrate the same risk profile.

Keywords: Alopecia areata; JAK inhibitors; alopecia treatment; baricitinib; deuruxolitinib; ritlecitinib; tofacitinib; upadacitinib.

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