Provided are: a pharmaceutical composition for treating acute myeloid leukemia (AML), the pharmaceutical composition containing a therapeutically effective combination of an FMS-like tyrosine kinase-3 (FLT3) inhibitor, a pharmaceutically acceptable salt thereof, or a solvate thereof, and a murine double minute 2 (MDM2) inhibitor, a pharmaceutically acceptable salt thereof, or a solvate thereof; and a method for treating acute myeloid leukemia using same.
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