Tazemetostat in Combination With Umbralisib and Ublituximab for the Treatment Relapsed or Refractory Follicular Lymphoma

This phase I/II trial tests the safety, side effects, and best dose of tazemetostat and umbralisib and whether tazemetostat in combination with umbralisib and ublituximab works to shrink tumors in patients with follicular lymphoma that has come back (relapsed) or does not respond to treatment (refractor). Tazemetostat may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Umbralisib may help block the formation of growths that may become cancer. Ublituximab is a monoclonal antibody that may interfere with the ability of cancer cells to grow and spread. Giving tazemetostat in combination with umbralisib and ublituximab may work better in treating follicular lymphoma.