Asparaginase 's an enzyme that catalyzes the hydrolysis of asparagine to aspartic acid. It's marketed under the brand name Elspar, to treat acute lymphoblastic leukemia (ALL) and's also used in some mast cell tumor protocols. Unlike other chemotherapy agents, it can be given as an intramuscular, subcutaneous, or intravenous injection without fear of tissue irritation. Mechanism of action The rationale behind asparaginase's that it takes advantage of the fact that ALL leukemic cells are unable t… (More on Asparaginase)