Efficacy, Safety and Pharmacokinetics of LP-003 in Peanut Allergic Patients

This study will evaluate the safety and efficacy of LP-003 for an increasing the amount of peanut protein that people with a peanut allergy can tolerate without having allergic symptoms. The study will include participants 12 to 55 years of age with a confirmed peanut allergy. Participants will be randomly assigned to receive LP-003 or placebo. LP-003 will be given by an injection under the skin (subcutaneous) once every 8 weeks during the first 24 weeks of treatment. Participants will not know the treatment they are receiving until the end of the study. The primary efficacy endpoints will be the proportion of participants in each group who successfully consume a single dose of ≥600 mg of peanut protein during a supervised double-blind, placebo-controlled food challenge at Week 24. Participants who complete the 24 weeks will continue for another 24 weeks in a blinded (participants will not know what treatment they are on) extension period, followed by a blinded follow-up period for continued safety, pharmacokinetic, pharmacodynamic, and immunogenicity assessments. The total study duration for each participant is approximately 84 weeks.