CD70 and renal cell carcinoma: In a phase I trial on participants suffering CD70-positive, metastatic RCC (NCT02216890), 18 patients were enrolled, 94% had the clear cell subtype of RCC, and all participants received SGN-CD70A IV in dose escalation (8, 15, 30, 50, 80, 120, 160, and 200 μg/kg).