Neoadjuvant Dual Checkpoint Inhibition and Cryoablation in Relapsed/Refractory Pediatric Solid Tumors

Patients less than 40 years old with relapsed/refractory solid tumors and at least two sites of measurable disease will receive the current pediatric RP2D of nivolumab and ipilimumab for one cycle and undergo cryoablation therapy of one tumor site. Patients will continue to receive cycles of checkpoint inhibition as long as there is no disease progression of unacceptable toxicity (maximum of 13 cycles \[12 months\]).