Nivolumab Plus Stereotactic Body Radiotherapy in II and III Line of Patients With Metastatic Renal Cell Carcinoma

"Hypofractionated radiation will be administered to a metastatic disease site at a dose and schedule of 30 Gy in 3 consecutive fractions. The day of first administration of Nivolumab will be designated as Time 1. Nivolumab will be given as flat dose of 240 mg in intravenous infusion beginning on day 1 every 14 days for 6 months, than switch to 480 mg q4-weekly in responding (CR, PR, SD) patients until PD or unacceptable toxicity .~SRT will be administered between the first and second administration of Nivolumab (7 days after the first infusion of Nivolumab)."