A drug used to treat advanced renal cell carcinoma, which is the most common type of kidney cancer. It is also used to treat advanced soft tissue sarcoma that has been treated with other anticancer drugs. It is being studied in the treatment of other types of cancer. Pazopanib hydrochloride may prevent the growth of new blood vessels that tumors need to grow. It is a type of protein tyrosine kinase inhibitor and a type of antiangiogenesis agent. Also called GW786034 and Votrient.