Multicenter, Platform-type Clinical Study of Refractory/Recurrent Acute Myeloid Leukemia

It is recommended to routinely screen for chromosomal karyotype, FLT3/ITD, FLT3/TKD and IDH1 mutations before enrollment.According to the patient's condition and physical condition, evaluate whether there is a suitable new drug clinical trial to enroll, if there is, enter the Arm 7 (new drug clinical trial); If not, enter other arm of the clinical study.According to the results of gene mutation, patients with target gene mutations should enter the corresponding study cohort (Arm1, Arm2), and select the regimen of specific targeted drug composition. For patients without a target mutation, patients eligible for intensive chemotherapy who had not received Venetoclax in the last 3 months were randomized to the Daunorubicin/idarbicin/mitoxantrone combination cytarabine + Venetoclax(DAV) (Arm3) and the Hyperhardinine combination cytarabine + Venetoclax cohort (HAV) (Arm4). Patients who were intolerant to intense chemotherapy were enrolled in the Venetoclax combined with Azacitidine cohort (Arm5). For patients who have failed treatment with Venetoclax within the last 3 months, the Venetoclax-based regimen is not recommended again and the physician is advised to conduct an exploratory trial (Arm6). After CR form induction therapy, allogeneic hematopoietic stem cell transplantation should be selected as far as possible according to the patient's wishes. For patients who are unable or unwilling to undergo allogeneic hematopoietic stem cell transplantation, physicians may choose post-remission consolidation therapy based on experience.