The FDA is expected to make a decision in April 2021. The European Medicines Agency has also accepted the Marketing Authorization Application 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.
Findings from the following studies in the abrocitinib JAK1 Atopic Dermatitis Efficacy and Safety global development program were included in the submissions:
JADE MONO-1 and JADE MONO-2: A pair of studies designed to evaluate the efficacy and safety of two doses (100mg and 200mg once daily) of abrocitinib monotherapy compared to placebo.
JADE COMPARE: Designed to evaluate the efficacy and safety of two doses (100mg and 200mg once daily) of abrocitinib compared to placebo in patients on background topical therapy.
The study also included an active control arm, dupilumab, a biologic treatment administered by subcutaneous injection, compared with placebo.
Priority Review designation is granted to medicines that the FDA considers to have the potential to provide significant improvements in the safety and effectiveness of the treatment, prevention or diagnosis of a serious condition.
Abrocitinib received Breakthrough Therapy designation from the FDA for the treatment of patients with moderate to severe AD in February 2018.
Abrocitinib also received a Promising Innovative Medicine designation from the UK's Medicines and Healthcare Products Regulatory Agency earlier this year, which indicates that a product may be eligible for the early access to medicines scheme based on early clinical data.
EAMS aims to give patients with life threatening or seriously debilitating conditions access to medicines that do not yet have a marketing authorization when there is a clear unmet medical need.
Pfizer recently announced results from the fourth trial in the JADE global development program, JADE TEEN. Additional data from other studies in the JADE program will be presented and published in the coming months.
Abrocitinib is an oral small molecule that selectively inhibits Janus kinase 1. Inhibition of JAK1 is thought to modulate multiple cytokines involved in pathophysiology of atopic dermatitis, including interleukin -4, IL-13, IL-31, IL-22, and thymic stromal lymphopoietin.
Atopic Dermatitis is a chronic skin disease characterized by inflammation of the skin and skin barrier defects. Lesions of AD are characterized by erythema (skin turning red or purple depending on normal skin color), itching, induration (hardening)/papulation (formulation of papules), and oozing/crusting.
AD is one of the most common, chronic, relapsing childhood dermatoses, affecting up to 10% of adults and up to 20% of children worldwide.
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