Hello:
Glad to hear your husband had a great response to IL-2! Consider him very lucky and with the grace of God, given another chance.
Unfortunately, high dose IL-2 does not work for everyone. The odds are very low but to some, worth it. I underwent high dose IL-2 last year. It did not work for me.
If you are in good health, and with the proper type of renal cancer, it maybe a good option before the targeted therapy is tried.
Wish you both the best
Krys