Testing of the Addition of a New Anti-cancer Drug, Molibresib, to Chemotherapy Treatment (Etoposide and Cisplatin) for Patients With NUT Carcinoma

This phase I/II trial studies the side effects and best dose of molibresib when given together with chemotherapy (etoposide and cisplatin) and how well they work for the treatment of NUT cancer that has spread to other places in the body (metastatic) or cannot be removed by surgery (unresectable). Molibresib may stop the growth of tumor cells by blocking some of the proteins needed for cell growth. Drugs used in chemotherapy, such as etoposide and cisplatin, 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. Adding molibresib to chemotherapy (etoposide and cisplatin), may work better in treating patients with NUT cancer compared to the usual approach.