Overview

The primary objective is to evaluate the efficacy and toxicity of high versus low intensity therapy options in patients with refractory forms and early relapses of acute myeloid leukemia (R/R AML) who are scheduled for allogeneic hematopoietic stem cell transplantation (alloHSCT).

Eligibility

Inclusion Criteria:

• Age ≥ 18 years;
• Primary refractory AML;
• Early relapsed AML;
• A signed informed consent to participate in the study.

Exclusion Criteria:

• Late relapsed AML;
• Isolated extramedullary relapse;
• MRD relapse without development of bone marrow relapse of AML;
• Acute promyelocytic leukemia;
• Previous refractoriness or loss of response during ongoing venetoclax therapy;
• Previous alloHSCT;
• Pregnancy and/or lactation period;
• Refusal of patients with preserved reproductive potential to use highly effective methods of contraception during the period of participation in the study;
• Lack of signed informed consent to participate in the study;
• Failure of the subject to follow the study protocol;
• Participation in any other clinical trial;
• Uncontrolled infectious complications;
• ECOG ≥ 3;
• History of other malignancies within the past 3 years, excluding squamous cell and basal cell skin cancers, carcinoma in situ of the cervix, breast, or other non-invasive malignancies, which, in the opinion of the investigator, are considered adequately treated and have a minimal risk of recurrence within 3 years;
• Chronic kidney disease with GFR ≤ 30 ml/min/1.73 m2 (according to the CKD-EPI Creatinine Equation);
• Severe cardiac pathology:
  1. uncontrolled arterial hypertension;
  2. stable angina III-IV functional classes;
  3. unstable angina and/or myocardial infarction less than 6 months before inclusion in the study;
  4. heart failure stages IIb-III, NYHA functional classes III-IV
  5. uncontrolled cardiac rhythm disturbances (≥ 2 grade CTCAE 5.0) or clinically significant ECG abnormalities.
• Cirrhosis classes B-C according to the Child-Pugh classification
• Increased liver function tests above the following values:
  1. Total bilirubin > 1,5 above the normal range;
  2. AST, ALT > 10 above the normal range.
• Major surgical interventions underwent less than 14 days before inclusion in the

  study.