RecruitingDrug trialStudy of CAR.70-engineered IL15-transduced Cord Blood-derived NK Cells in Conjunction With Lymphodepleting Chemotherapy for the Management of Advanced Renal Cell Carcinoma, Mesothelioma and OsteosarcomaTo find a recommended dose of donated NK cells that can be given with lymphodepleting chemotherapy to patients with advanced renal cell carcinoma, mesothelioma, or osteosarcoma. The effects of this therapy will also be studied.