Abbreviations AA, AmpliconArchitect ALL, acute lymphoblastic leukaemia AML, acute myeloid leukaemia aNHEJ, alternative non-homologous end joining APML, acute promyelocytic leukaemia ATM, Ataxia-telangiectasia mutated BCP-ALL, B-cell precursor acute lymphoblastic leukaemia. BCR, B-cell receptor BET, Bromodomain and extraterminal domain BFB, bridge-fusion-bridge BO, Barrett's oesophagus BrdU, 5-bromo-2′-deoxyuridine.