a drug used to treat acute leukemia. it is used in combination with other drugs to treat hodgkin disease, non-hodgkin lymphoma, rhabdomyosarcoma, neuroblastoma, and wilms tumor. oncovin is also being studied in the treatment of other types of cancer. it blocks cell growth by stopping cell division. it is a type of vinca alkaloid and a type of antimitotic agent. also called vincristine sulfate.