Listening to the news last night, Australia has a new drug to fight melanoma:
http://www.abc.net.au/news/2015-06-2...usands/6578554
However they also suggested it could be used for bladder cancer too. I can't tell whether this would be good/bad/no effect on PEB. You would still need to know if you had bladder cancer even if they had a perfect cure for it!