TATE and Pembrolizumab (MK3475) in mCRC and NSCLC

Inclusion Criteria: * Liver metastatic MSS-mCRC or NSCLC without EGFR or AKT mutations * mCRC progressed on at least two lines of standard chemotherapy; or * NSCLC progressed on chemotherapy and an immune checkpoint inhibitor * Measurable disease * ECOG 0-1 * At least 4 weeks from prior chemotherapy and free from chemo-related toxicity * Adequate organ function Exclusion Criteria: * Prior organ transplantation * Liver metastasis more than 50% * Oxygen saturation less than 92% in room air * Prior autoimmune disorder * CNS metastasis * Major GI bleeding in the last 2 months