This partially randomized phase II/III trial studies how well, in combination with surgery, cisplatin and combination chemotherapy works in treating children and young adults with hepatoblastoma or hepatocellular carcinoma. Drugs used in chemotherapy, such as cispla...

This is a study to determine the maximum tolerated dose (MTD) for CDX-1140 (CD40 antibody), either alone or in combination with CDX-301 (FLT3L), pembrolizumab, or chemotherapy and to further evaluate its tolerability and efficacy in expansion cohorts once the MTD is...