Stephan Weidinger MD, PhD , Andrew Blauvelt MD, MBA , Kim A. Papp MD, PhD , Adam Reich MD, PhD , Chih-Hung Lee MD, PhD , Margitta Worm MD , Charles Lynde MD , Yoko Kataoka MD , Peter Foley MD , Xiaodan Wei PhD , Wanling Wong PhD , Anne-Catherine Solente MSc , Christine Weber MD , Samuel Adelman MD , Sonya Davey MD , Fabrice Hurbin PharmD , Natalie Rynkiewicz PhD , Karl Yen MD , John T. O’Malley MD, PhD , Charlotte Bernigaud MD, PhD
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引用次数: 0
Abstract
Background
Amlitelimab, a fully human nondepleting mAb targeting OX40 ligand on antigen-presenting cells, could prevent T-cell–driven inflammation seen in atopic dermatitis (AD).
Objective
This trial evaluated the efficacy and safety of amlitelimab in adults with AD.
Methods
In this 2-part, phase 2b, randomized, double-blinded placebo-controlled trial (ClinicalTrials.gov identifier NCT05131477), patients received subcutaneous amlitelimab every 4 weeks at doses of 250 mg plus a 500-mg loading dose, 250 mg, 125 mg, or 62.5 mg or placebo for 24 weeks in Part 1 (1:1:1:1:1 randomization). In Part 2, clinical responders were reallocated 3:1 to stop taking amlitelimab or continue the previous dose regimen for 28 weeks. The primary end point was percentage of change in Eczema Area and Severity Index (EASI) from baseline to week 16.
Results
In all, 390 and 190 patients enrolled in Part 1 and Part 2, respectively. A significant percentage of change decrease in EASI was observed with amlitelimab doses versus with placebo (P < .001). Clinical responses at week 24 (Investigator Global Assessment 0/1 and/or a 75% reduction in EASI) were maintained at week 52 in patients continuing or stopping amlitelimab. Of the patients maintaining clinical response at week 52 after no longer receiving treatment, more than 80% had serum amlitelimab concentrations less than the 4-μg/mL threshold for several weeks before week 52. Reductions in AD-related biomarkers during Part 1 were maintained through Part 2. Amlitelimab was well tolerated over 52 weeks.
Conclusions
Amlitelimab treatment significantly reduced clinical and biomarker responses, and was well tolerated in adults with AD through week 52. Sustained responses were observed in the majority of patients for 28 weeks after they had stopped taking amlitelimab.
期刊介绍:
The Journal of Allergy and Clinical Immunology is a prestigious publication that features groundbreaking research in the fields of Allergy, Asthma, and Immunology. This influential journal publishes high-impact research papers that explore various topics, including asthma, food allergy, allergic rhinitis, atopic dermatitis, primary immune deficiencies, occupational and environmental allergy, and other allergic and immunologic diseases. The articles not only report on clinical trials and mechanistic studies but also provide insights into novel therapies, underlying mechanisms, and important discoveries that contribute to our understanding of these diseases. By sharing this valuable information, the journal aims to enhance the diagnosis and management of patients in the future.