PALISADE Follow-on Study (ARC004)

Key Inclusion Criteria: * Completion of the ARC003 study * Written informed consent and/or assent from subjects/guardians as appropriate * Use of effective birth control by sexually active female subjects of child-bearing potential Key Exclusion Criteria: * Early discontinuation from the ARC003 study * Meets any longitudinally applicable ARC003 study exclusion criteria * (Group 2 only) Failure to tolerate ≥ 443 mg cumulative of peanut protein with no or mild symptoms in the ARC003 study Exit DBPCFC * Any other condition that, in the opinion of the Investigator, precludes participation for reasons of safety