Abrocitinib is an oral, small molecule, Janus kinase (JAK) 1 inhibitor in development for the treatment of adults and adolescents with moderate to severe atopic dermatitis.

Abrocitinib is under investigation in clinical trial NCT03796676 (JAK1 Inhibitor With Medicated Topical Therapy in Adolescents With Atopic Dermatitis).

Abrocitinib is currently being developed by Pfizer for the treatment of atopic dermatitis (eczema). It is an investigational oral once-daily Janus kinase 1 (JAK1) inhibitor.

Atopic dermatitis (AD) is a complex, chronic, inflammatory skin disease characterized by pruritic, intense itching, and eczematous lesions affecting about 25% of children and 2% to 3% of adults worldwide. Abrocitinib is a selective inhibitor of Janus kinase-1 (JAK1) enzyme inhibiting the inflammatory process. Therefore, we aimed to assess the efficacy and safety of abrocitinib for moderate-to-severe AD.

Abrocitinib in dose 100 mg or 200 mg is an effective, well-tolerated, and promising drug in treating patients with moderate-to-severe atopic dermatitis. However, the analysis favored the efficacy of abrocitinib 200 mg over 100 mg, but side effects such as nausea and headache are likely to occur more with 200 mg.