Sorry to hear that your father's cancer has spread.
The two immunotherapy drugs, also named "Yervoy" and "Opdivio" are among the number of newest type of treatment being evaluated and used for bladder cancer.
These types of newer drugs can produce amazing results, along with varied and very serious side effects. The doctors monitor patients closely when these newer drugs are used. The best information on how your father will respond to these can only come from his care team. Wishing him well in the ongoing battle.