Background: High-grade neuroendocrine carcinomas (HGNEC) are cancers that develop in different parts of the body, including the digestive tract, genitals, neck, and head. One drug (belinostat), combined with 2 other drugs (etoposide and cisplatin), is approved to treat HGNEC. But some people may have a gene variant that affects how quickly their body gets rid of the drug; these people may do better with diffe...

Summary: Part 1: This is a 5 Arm study primarily to determine the best dose out of the two dose levels of Belinostat and Pralatrexate combined with CHOP/COP in newly diagnosed PTCL patients based on Safety for part 2 study. Part 2 (Efficacy and Safety): This is a 3 Arm study. Patients with previously untreated PTCL will be randomized 1:1:1 into 1 of 3 treatment groups: 2 experimental treatment groups (Bel-...

Summary: This phase I trial tests the safety, side effects, and best dose of combination therapy with tazemetostat and belinostat in treating patients with lymphoma that has come back after a period of improvement (relapsed) or that does not respond to treatment (refractory). Tazemetostat is in a class of medications called EZH2 inhibitors. The EZH2 gene provides instructions for making a type of enzyme ca...

Summary: The purpose of this study is to find out whether the combination treatment of romidepsin and oral azacytidine is safe and effective in patients with Peripheral T-Cell Lymphoma (PTCL). This study will compare the experimental combination treatment of romidepsin and oral azacytidine to single agent drugs already determined effective in patients with PTCL. For the purposes of this study, the single a...

Summary: This phase I trial studies the side effects and best dose of belinostat when given together with durvalumab in treating patients with urothelial cancer that has spread to other places in the body (metastatic) or cannot be removed by surgery (unresectable) and has spread to nearby tissue or lymph nodes (locally advanced). Immunotherapy with monoclonal antibodies, such as durvalumab, may help the bo...

Summary: This is an open-label, multi-center, phase I study designed to assess the maximum tolerated dose of ribociclib and belinostat in combination. The trial will open with a dose escalation followed by an expansion cohort at the identified dose. Dose escalation will be open to the enrollment of patients diagnosed with triple-negative breast cancer or ovarian cancer. Dose expansion will only be open to ...

Summary: A Phase 3, randomized, 2-arm, open-label, multicenter, stratified study of soquelitinib versus physician's choice standard of care (SOC) treatment (selected single agents) in participants with relapsed/refractory (R/R) peripheral T-cell lymphoma not otherwise specified (PTCL-NOS), follicular helper T-cell lymphomas (FHTCLs), or systemic anaplastic large-cell lymphoma (sALCL).