Abstract
Abstract Atopic dermatitis (AD) is a chronic systemic inflammatory disease requiring long-term management. However, availability of long-term AD treatments with an acceptable risk-benefit profile is limited in pediatric patients. This ongoing phase 3 open-label extension (OLE; NCT02612454) enrolled patients aged 6 months to 17 years with moderate-to-severe AD. Patients were treated with dupilumab (weight-based dosing): 200 mg every 4 weeks (q4w; 5–14 kg), 300 mg q4w (15–29 kg) and 200 mg q2w (30–59 kg). Here we report safety data (cutoff date July 31, 2021) for 180 patients aged 6 months to 5 years who enrolled in the OLE. Of the 180 patients reported, 122 (67.8%) completed up to 16 weeks of the study, 30 (16.7%) up to Week 52 and 15 (8.3%) up to Week 156. A total of 167 (92.8%) patients were continuing treatment at the time of data cutoff. At baseline, the mean (SD) age was 3.9 (1.3) years. One hundred and nine (60.6%) patients reported treatment-emergent adverse events (TEAEs); the most common were nasopharyngitis (12.8%), upper respiratory tract infection (11.7%) and pyrexia (11.7%). One (0.6%) patient had a treatment-related severe TEAE (urticaria) that led to study drug discontinuation. Two (1.1%) patients had serious TEAEs (anaphylactic reaction and pneumonia mycoplasmal) of severe and moderate intensity, respectively. Both serious TEAEs were unrelated to treatment. Long-term safety of dupilumab in this pediatric population was generally consistent with the known dupilumab safety profile in adults and older pediatric patients.
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