RecruitingPhase 1Drug trialA Study of Ruxolitinib and Duvelisib in People With LymphomaThis 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).