Used in chemotherapy for the treatment of non-small cell lung cancer and, in some cases, breast cancer. It works by inhibiting the formation of microtubules during cell division, leading to the arrest of cancer cell growth and eventual cell death. Administered intravenously, it is often part of a combination therapy regimen. Its semi-synthetic nature allows for improved pharmacokinetics compared to older vinca alkaloids, contributing to a more favorable side effect profile while maintaining efficacy.