Tom
The trials are based on specific types of bladder cancer. My husband has T1 aggressive nonmuscle. He had to go through a round of bcg first to see how he would respond. Your doctor should be able to guide you and discuss trials based on your situation. Even though Mayo is taking only 4 I believe there will be 500 total in the trial. I think several places in CA are participating. Not sure where you are living but there are options. Hope this helps

@tclingan25, can you share a bit more? What type and stage of bladder cancer do you have? What treatments have you had or will be having?