Olverembatinib as Maintenance Therapy or Preemptive Therapy After Allo-HSCT in Ph+ALL

This study is a single-center, prospective, single-arm exploratory study. Ph + acute lymphoblastic leukemia patients treated with allogeneic hematopoietic stem cell transplantation were recruited from the Stem Cell Transplantation Center of the Hospital of Hematology, Chinese Academy of Medical Sciences. The number of patients is expected to be 50 cases. The enrolled patients plan to receive Olverembatinib as a post-transplant treatment regimen, including maintenance therapy to prevent recurrence and preemptive treatment. Hematopoietic reconstitution ( neutrophil \> 0.5 × 10 \^ 9 / L, platelet \> 50 × 10 \^ 9 / L ) was evaluated after enrollment. From 2 months to 3 months after transplantation, Olverembatinib 40 mg QOD was added for maintenance treatment until 2 years after transplantation. During maintenance treatment, Olverembatinib dose ( dose range 20 mg QOD to 40 mg QOD ) can be adjusted according to blood picture, biochemical index or other oral drugs ( triazole drugs, etc. ).