Used primarily as an antineoplastic agent in the treatment of various cancers, including acute lymphoblastic leukemia, lung cancer, and melanoma. It works by inhibiting microtubule formation during cell division, thereby preventing cancer cell proliferation. Administered intravenously under medical supervision due to its potent cytotoxic effects. Often part of combination chemotherapy regimens to enhance efficacy. Requires careful monitoring for side effects such as neurotoxicity and myelosuppression.