Complete remission of renal cell carcinoma with lung metastases in two hemodialysis patients after low-dose interferon therapy.

A standard immunotherapy strategy for metastatic renal cell carcinoma (RCC) in dialysis patients has yet to be established. In this study, we report complete remission of RCC with lung metastases in 2 hemodialysis patients after low-dose interferon therapy (Sumiferon® 3 × 10⁶ international unit 3 times a week). These results suggest that interferon therapy is important for clear cell RCC with lung metastases in dialysis patients, even in the era of molecular-targeted therapies.