Translocational rcc, has undergone extensive chemo but latest test show cancer spread to liver and sternum. going to start with sunitinib. prognosis?

It is a good drug: Sunitinib is a good drug which is very powerful. So you should start it soon and hope that it works(it works in less than half of the patients(40-50%). Another new treatment approved recently is immunotherapy with Nivolumab(Opdivo). This is a powerful drug to keep in mind and use it either before Sunitinib or as next therapy in case Sunitinib failed to benefit you.