Off-Label Uses of Abrocitinib: Review of Emerging Therapeutic Applications beyond Atopic Dermatitis.

Abrocitinib, an oral small-molecule Janus Kinase 1 (JAK1) inhibitor, is primarily approved for treating moderate-to-severe atopic dermatitis (AD) in adults and adolescents aged 12 and older. This review examines the emerging off-label uses of Abrocitinib. We identified 37 papers reporting on the use of Abrocitinib in various conditions other than AD. The most commonly reported uses were for vitiligo, prurigo nodularis, and hand eczema, with 12 cases each. There were also 10 cases of lichen sclerosus and chronic pruritus of unknown origin and 5 cases each of pityriasis rubra pilaris alopecia areata. Additionally, erythematotelangiectatic rosacea and steroid-induced rosacea were reported in four cases each. Other conditions treated with Abrocitinib were noted, but these mostly had only one or two reported cases. Interestingly, out of the 103 patients reviewed, all studies reported favorable clinical outcomes and satisfactory results, with the exception of one isolated case where Abrocitinib was used to treat erythematotelangiectatic rosacea.