Summary
This phase I/II trial studies the best dose and how well trifluridine/tipiracil hydrochloride combination agent TAS-102 (TAS-102) and liposomal irinotecan work in treating patients with gastrointestinal cancers that have spread to nearby tissue and lymph nodes (locally advanced), to other places in the body (metastatic), or cannot be removed by surgery. Drugs used in the chemotherapy, such as trifluridine/tipiracil hydrochloride combination agent TAS-102 and liposomal irinotecan, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading.