The ALLR3 trial (NCT00967057) was an open-label, randomized clinical trial that investigated the outcomes of pediatric B-cell precursor acute lymphoblastic leukaemia (ALL) who had late bone marrow relapses and were treated with combination chemotherapy. Here, Vaskar Saha, MBBS, DCH, MD, FRCP, FRCPath, PhD, University of Manchester, Manchester, UK, discusses the follow-up on the trial. This interview took place at the British Society for Haematology (BSH) 2019 Annual Meeting, held in Glasgow, UK.