Evaluation of Long-term Safety in Paediatric Patients With B-precursor Acute Lymphoblastic Leukemia (ALL) who Have Been Treated With Either Blinatumomab or Chemotherapy (20180130) (Paediatric long-term follow up study) First published 10/03/2020 Last updated 23/04/2026 EU PAS number:EUPAS33862 Study Ongoing