T-cell Large Granular Lymphocyte Leukemia

This phase II trial tests whether ruxolitinib works to shrink tumors in patients with T-cell large granular lymphocyte leukemia. Ruxolitinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth.

This study will test the safety of ruxolitinib, given at one dose that does not change, and duvelisib, given at different doses, to find out what effects, if any, the study treatment has on people with relapsed or refractory NK-cell or T-cell lymphoma. This study has three parts: dose escalation (Part 1), dose expansion (Part 2), and TFH/T-PLL cohort expansion (Part 3).