An Exploratory Clinical Study of the Safety and Efficacy of Avapritinib Combined With Azacitidine and Venetoclax in the Treatment of Relapsed Acute Myeloid Leukemia After Allogeneic Hematopoietic Stem Cell Transplantation
This is a single-center, prospective, single-arm, exploratory clinical study. To explore the efficacy and safety of avapritinib in patients with recurrent acute myeloid leukemia after allogeneic hematopoietic stem cell transplantation with C-KIT mutation RUNX1::RUNX1T1 or CBFB::MYH11.
• Subjects met the criteria for recurrence after allogeneic transplantation: re-emergence of leukemia cells or bone marrow original cells in peripheral blood \>5% (except for other causes such as bone marrow recovery period) or extramedullary leukemia cell infiltration or molecular or cytogenetic recurrence.
• Bone marrow molecular biology detected C-KIT D816 or C-KIT N822 mutations
• Patients with CBFB::MYH11 gene or RUNX1::RUNX1T1 fusion gene detected.
• Eastern Cancer Collaboration Group (ECOG) physical status score 0-2 points.
• Liver, kidney and cardiopulmonary functions met the following requirements: Within 2 weeks before enrollment ① creatinine ≤1.5 upper limit of normal value; ② Left ventricular ejection fraction ≥50%; ③ Blood oxygen saturation \>91%; ④ Total bilirubin ≤2×ULN; ALT and AST≤2.5 x ULN; Myocardial enzymes \< 2 times the upper limit of normal (for the same age)
• Volunteer to participate in clinical studies and sign informed consent, willing to follow and able to complete all trial procedures.