John Floyd (IMAGE) City of Hope Caption John Floyd, 76, and his wife Ayesha talk to Sumanta Pal, M.D., medical oncologist at City of Hope, about Floyd's stage 4 renal cell carcinoma. Floyd has been taking the experimental targeted therapy tivozanib for 44 months and has not seen his cancer progress. Credit City of Hope Usage Restrictions Please use credit information without changes. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.