Clinical Study Protocol for the Treatment of ND-AML and RR-AML With KMT2A Gene Abnormalities Using VHEA.

Inclusion Criteria: * Age between 18 and 60 years old;Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1. * Expected survival time of at least 3 months. * Does not meet any of the following criteria for severe heart, lung, liver, or kidney disease:A) History of congestive heart failure requiring treatment, or ejection fraction ≤ 50%, or presence of chronic stable angina;B) Lung diffusing capacity for carbon monoxide (DLCO) ≤ 65%, or forced expiratory volume in one second (FEV1) ≤ 65%;C) Moderate liver dysfunction, total bilirubin \> 1.5 to ≤ 3.0 × upper limit of normal (ULN);D) Creatinine clearance ≥ 30 mL/min to \< 45 mL/min. * No other significant contraindications to chemotherapy as determined by the physician; * Capable of understanding and willing to sign the informed consent form for this study. Exclusion Criteria: * Presence of other malignancies; * Underwent cardiac vascular intervention or stent placement within 12 months prior to signing the informed consent, or history of myocardial infarction, unstable angina, or other clinically significant cardiac disease; * Uncontrolled active infection (including bacterial, fungal, or viral infection) and visceral bleeding; * Pregnant or lactating women; * Participation in any other clinical study within 3 months prior to signing the informed consent; * Any other condition deemed unsuitable for participation in this study by the investigator.