Study Finds Ruxolitinib Effective, Safe for Children With AD
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Study Finds Topical Ruxolitinib Effective, Safe for Children With AD

Ted Bosworth

November 01, 2023

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BERLIN – Based on a phase 3 trial, treatment with the topical Janus kinase (JAK) inhibitor ruxolitinib appears to be as safe and effective for the control of atopic dermatitis (AD) in children aged 2-11 years as previously shown in adolescents and adults for whom it already has an approved indication.

In this study – TRUE-AD3 – systemic exposure to ruxolitinib, which is selective for JAK1 and 2, was followed closely, and the low mean plasma concentrations "suggest systemic JAK inhibition is highly unlikely," Lawrence F. Eichenfield, MD, professor of dermatology and pediatrics at the University of California, San Diego, said at the annual congress of the European Academy of Dermatology and Venereology.

For example, at a plasma concentration no greater than 27 nM in both younger and older patients at 4 weeks and again at 8 weeks, the systemic exposure was about a tenth of that (281 nM) previously associated with myelosuppression, he reported.

Given the boxed warning for oral JAK inhibitors, which was based largely on a 2022 study in adults with rheumatoid arthritis that associated tofacitiniba nonspecific JAK inhibitor, with an increased risk of thrombotic events in adults already at risk for these events, safety was a focus of this phase 3 trial.

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