Overview Erwinase Master Treatment Protocol Status: No longer available Trial end date: 1969-12-31 Target enrollment: Participant gender: Summary The purpose of this study is to make Erwinase available to patients with acute lymphoblastic leukemia (ALL) who have had previous allergic reactions to certain formulations of L-asparaginase. Details Lead Sponsor: Phoenix Children's HospitalCollaborators: Fisher BioservicesJazz PharmaceuticalsTreatments: Asparaginase