26212
While high - dose interleukin ( IL ) - 2 remains an option for highly selected good and intermediate risk patients with clear - cell histology because of durable complete responses in a small fraction of patients , cytokine - based therapy including interferon ( IFN ) has been supplanted by vascular - endothelial growth factor ( VEGF ) and mammalian target of rapamycin ( mTOR ) inhibitors .
 Chemical: rapamycin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: rapamycin