This was a randomized, participant- and investigator-blinded, placebo-controlled study to assess the safety and clinical efficacy of oral LOU064 versus placebo across five treatment arms in participants with a medically confirmed diagnosis of IgE-mediated peanut allergy for one-month treatment period (up to 5 weeks). Participants had oral food challenges at the beginning of the study and at the end of the treatment period to assess their symptoms from increasing doses of peanut allergen.