Cyclopropylamines as lsd1 inhibitors

A method of treating a hematologic cancer which comprises administering to a human in need thereof an effective amount of a compound which is 4-((4-((((1R,2S)-2-phenylcyclopropyl)amino)methyl)piperidin-1-yl)methyl)benzoic acid, represented by the formula:

• or a pharmaceutically acceptable salt thereof, wherein said hematologic cancer is selected from the group consisting of:
• acute myeloid leukemia, chronic myeloid leukemia, acute lymphoblastic leukemia, chronic lymphocytic leukemia, myeloproliferative diseases, multiple myeloma, myelodysplastic syndrome, Hodgkin's disease, and non-Hodgkin's lymphoma.