I was diagnosed with RCC with spread to lungs in March, kidney removed in April, and started Sutent in June. After cycle 2, CTscan showed tumor shrinkage by 30%. I'm currently in cycle 3. Side effects are managable however for me taste changes and mouth irritation makes eating a chore and unenjoyable. I also experience lower back (butt) pain that refers up the back. Ibuprofen largely relieves the pain but not totally. Have other experienced this with Sutent?