EUCRISA (crisaborole) Adverse Reactions

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Adverse Reaction Overview

The most common adverse drug reactions reported in clinical trials among patients with mild to moderate atopic dermatitis 2 years of age and older have been application site reactions.

Clinical Trial Adverse Reactions

Because clinical trials are conducted under very specific conditions, the adverse reaction rates observed in the clinical trials may not reflect the rates observed in practice and should not be compared to the rates in the clinical trials of another drug. Adverse reaction information from clinical trials is useful for identifying drug-related adverse events and for approximating rates.

In two randomized, double-blind, parallel-group, vehicle-controlled Phase 3 clinical trials (Studies AN2728-AD-301 and AN2728-AD-302), 1012 patients 2 to 79 years of age with mild to moderate atopic dermatitis were treated with EUCRISA twice daily for 4 weeks. The adverse reaction reported by ≥1% of EUCRISA-treated patients is listed in Table 2.

Table 2: Adverse Reaction Occurring in ≥1% of Patients in Atopic Dermatitis Trials through Week 4
Refers to skin sensations such as burning or stinging.

Adverse Reaction



n (%)



n (%)

Application site paina





Less Common Clinical Trial Adverse Reactions

Less common (<1%) adverse reactions in patients treated with EUCRISA included application site reactions (including contact dermatitis and pruritus) and flare of atopic dermatitis.

In an open-label, single arm, long-term safety study, 517 patients 2 to 72 years of age (including 454 patients 2 to 17 years of age), who had completed one of the Phase 3 studies without safety issues that precluded further treatment, were treated with EUCRISA twice daily intermittently for up to 48 weeks in 28 day on-treatment or off-treatment cycles. A total of 9 (2%) patients discontinued the therapy due to adverse events. The most frequently reported adverse events included atopic dermatitis, application site pain, and application site infection.

Abnormal Laboratory Findings: Hematologic, Clinical Chemistry and Other Quantitative Data

Results for clinical laboratory testing have not identified clinically important changes from baseline to the end of study in mean or median values for any hematology or biochemistry parameters in any of the clinical studies in patients with atopic dermatitis.

Clinical Trial Adverse Reactions (Pediatrics)

In a multicenter, open‑label, uncontrolled trial, 137 pediatric subjects aged 3 months to less than 2 years were treated with EUCRISA twice daily for 4 weeks. Overall, the safety profile of EUCRISA in this age group was consistent with that of Studies AN2728-AD-301 and AN2728-AD-302 in subjects 2 years of age and older.

Post-Market Adverse Reactions

The following adverse reactions have been identified during post-approval use of EUCRISA. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure: 

Application site reactions