I ran across this by accident and for some reason I can't copy link here but there is a new drug approved by fda in sept 2015 called Lonsurf (Tipiracil/Triflurdine for stage IV who have been on all other chemos it comes in pill form. One would think if you are stage IV your doctor would mention it but I talked to a few stage IV people i know and their docs have never mentioned it as an option but info on the drug looks promising for extended survival.
missjv