Adult acute lymphoblastic leukaemia (ALL) is one of the most prevalent haematological malignancies in adults, accounting for about 20-30% of cases. The complete remission (CR) rate can reach 70-90% but more than 60% of patients still relapse when treated with intensive consolidation chemotherapies. Consequently, allogeneic haematopoietic stem cell transplantation (allo-HSCT) is considered the standard care for postremission treatment to reduce the risk of recurrence, albeit accompanied by high therapy-related mortality (TRM). 1,2 In recent years, superior results have been achieved in B cell-ALL (B-ALL) therapy and the role of allo-HSCT in first CR (CR1) patients is an area of active investigation. Recently, the emergence and rapid development of novel targeted therapies in B-ALL, including monoclonal antibodies against specific tumour antigens (inotuzumab, blinatumomab, etc.) and chimeric antigen receptor T cells characterized by a high response rate and acceptable tolerance, have been witnessed. [3][4][5] For adolescents and young adults, paediatric-inspired protocols may achieve comparable or even potentially better results without upfront allo-HSCT. 6 In Philadelphia chromosome-positive