373 Safety of lebrikizumab in adults and adolescents with moderate-to-severe atopic dermatitis: data from eight trials
Authors: Gold Linda Stein , Thaçi Diamant , Thyssen Jacob P   , Gooderham Melinda , Laquer Vivian  , Natalie Chitra R , Zhao Fangyi  , Meskimen Eric , ElMaraghy Hany , Montmayeur Sonia  , Jimenez Gemma , de Bruin-Weller Marjolein 
Published: June 2023

Lebrikizumab (LEB) is a monoclonal antibody that binds with high affinity to interleukin (IL)-13, thereby blocking the downstream effects of IL-13 with high potency. To report integrated safety information in adult and adolescent patients with moderate-to-severe atopic dermatitis treated with LEB, from an integrated safety analysis of eight clinical Phase 2 and 3 trials. These data include adult and adolescent patients who received at least one dose of study drug from a total of eight atopic dermatitis clinical trials: ADvocate1, ADvocate2, ADhere, ADore, ADjoin (ongoing), ARBAN, TREBLE and a Phase 2b study. Treatment duration ranged from a single dose to 100 weeks. This analysis includes all placebo-controlled Week 0- to 16-safety data in patients treated with LEB 250 mg every 2 weeks (LEBQ2W, n = 783) compared with placebo (n = 404) known as ALL PC Weeks 0–16, and all patients who received at least one dose of LEB (n = 1720) known as ALL LEB. Conjunctivitis cluster is defined by MedDRA-preferred terms of conjunctivitis, allergic conjunctivitis, bacterial conjunctivitis, viral conjunctivitis and giant papillary conjunctivitis. Exposure adjusted incidence rates (IR) are provided as per 100 patient-years. In ALL PC Weeks 0–16 analysis, the frequency of treatment-emergent adverse events (TEAE) was 49.2% in LEBQ2W (n = 384) compared with 53.1% in placebo (n = 215). The majority of TEAEs reported were mild or moderate in severity with 2.3% (n = 18) reported as severe in LEBQ2W and 4.4% (n = 18) in placebo. Serious adverse events (SAEs) were reported by 1.3% (n = 10) in LEBQ2W and 1.9% (n = 8) in placebo. No deaths reported in LEBQ2W and one death in placebo. The most frequently reported TEAE in LEBQ2W was conjunctivitis and in placebo was atopic dermatitis. Conjunctivitis cluster was reported by 8.5% (n = 67) in LEBQ2W and 2.5% (n = 10) in placebo. All conjunctivitis cluster events were mild or moderate. Injection site reactions (ISRs) were reported by 2.6% (n = 20) in LEBQ2W and 1.5% (n = 6) in placebo. Adverse events leading to discontinuation were reported by 2.3% (n = 18) in LEBQ2W and 1.4% (n = 6) in placebo. In ALL LEB, the frequency of TEAEs was 64.3% (n = 1106, IR: 137.9), with the majority being mild or moderate in severity. Severe TEAEs were reported by 5.3% (n = 91). The incidence rates of TEAE did not increase with duration of treatment exposure. The SAEs were reported by 3.3% (n = 56, IR: 3.5). Three (0.2%) deaths occurred in ALL LEB. Conjunctivitis cluster was reported by 10.6% (n = 183, IR:12.2) with the majority being mild or moderate in severity and 0.3% (n = 6) being reported as severe. The ISRs were reported by 3.1% (n = 53, IR: 3.3). Adverse events leading to discontinuation were reported by 4.2% (n = 73, IR: 4.5). The overall safety profile for lebrikizumab consisted of AEs that were mostly nonserious, mild or moderate in severity, and did not lead to treatment discontinuation. Safety profile was similar in both adults and adolescents.