Pfizer announced that the U.S. Food and Drug Administration (FDA) accepted for filing and granted Priority Review designation to the company's New Drug Application (NDA) for abrocitinib (100mg and 200mg), an investigational oral once-daily Janus kinase 1 (JAK1) inhibitor, for the treatment of moderate to severe atopic dermatitis (AD) in patients 12 and older. The FDA is expected to make a decision in April 2021. The European Medicines Agency (EMA) has also accepted the Marketing Authorization Application (MAA) for abrocitinib in the same patient population with a decision anticipated in the second half of 2021.

The filings were based on the results of a robust Phase 3 clinical trial program, across which abrocitinib demonstrated statistically superior improvements in skin clearance, disease extent, and severity, as well as rapid improvements (measured as early as Week 2) in itch versus placebo. Abrocitinib also demonstrated a consistent safety profile across trials and was generally well-tolerated.