Inclusion Criteria:

• Voluntary and signed informed consent, good compliance

• Age: ≥18 years old (at the time of signing the informed consent); expected survival time greater than 3 months.

• Diagnosis of one of the following diseases:

  1. Acute Myeloid Leukemia (AML):
  2. Myelodysplastic Syndromes (MDS)
  3. Major organ functions are normal.
  4. Fertile male and female subjects agree to use contraception during the study and for 6 months after the study ends.

Exclusion Criteria:

• Comorbidities and Medical History:

  1. Diagnosis of or current concomitant malignancy within 3 years prior to the first dose;
  2. Presence of multiple factors affecting oral drug intake and/or absorption;
  3. Major surgical procedures or significant traumatic injuries within 28 days prior to the first dose;
  4. History of arterial/venous thrombotic events within 6 months prior to the first dose;
  5. History of psychiatric drug abuse that cannot be discontinued, or psychiatric disorders;
  6. Presence of any severe and/or uncontrolled disease in the subject.

• Tumor-related Symptoms and Treatment:

  1. Diagnosis of Acute Promyelocytic Leukemia (APL), Myelodysplastic Syndromes/Myeloproliferative Neoplasms (MDS/MPN);
  2. Presence of leukemia central nervous system (CNS) involvement or high suspicion of CNS involvement but unable to confirm;
  3. Subjects with extramedullary disease only in AML;
  4. Presence of life-threatening severe leukemia-related complications;

• Study Treatment-related:

  1. Received live vaccines within 4 weeks prior to the first dose, or planned to receive live vaccines during the study period;
  2. Participated in other clinical trials involving anti-tumor drugs within 4 weeks prior to the first dose.