Cabozantinib in Advanced Solid Malignancies

This research study is a Phase II clinical trial. Phase II clinical trials test the effectiveness of an investigational drug to learn whether the drug works in treating a specific cancer. "Investigational" means that the drug is still being studied and that research doctors are trying to find out more about it-such as the safest dose to use, the side effects it may cause, and if the drug is effective for treating different types of cancer. It also means that the FDA has not approved the drug for this type of cancer, or for any use outside of research studies. When cancer spreads from the primary tumor, one of the most commons sites it spreads to is bone. When cancer spreads to bone there can be significant symptoms such as pain. Cabozantinib works by blocking signaling that leads to cancer growth as well as blocking the growth of new blood vessels (angiogenesis) that help to feed a tumor. Cabozantinib has been studied or is being studied in research studies as a possible treatment for various types of cancer, including prostate cancer, brain cancer, thyroid cancer, lung cancer and kidney cancer. Previous clinical research studies indicate that cabozantinib may also have activity against cancer once it has spread to the bones. The purpose of this study is to find out if cabozantinib is effective in treating cancer that has spread to the bone.