The present disclosure comprises a method for administering 2,3-dihydro-isoindole-1-one compound or a pharmaceutically acceptable salt, ester, solvate and/or prodrug thereof, for the treatment of hematological cancers such as acute myeloid leukemia (AML). The present disclosure further relates to reducing or inhibiting cell-proliferation which is activated by wild-type or mutated Fms-like tyrosine kinase-3 receptor (FLT3). The present disclosure further relates to a method of inhibiting or reducing abnormal (e.g., overexpressed) wild-type or mutated BTK activity or expression in a subject in need thereof.