RecruitingPhase 2Drug trialA Study of Enasidenib in People With T-Cell LymphomaThe researchers are doing this study to find out whether enasidenib is a safe treatment for people with angioimmunoblastic T-cell lymphoma (AITL) that has an IDH2 mutation. The researchers will look at the safety of enasidenib when it is given alone or in combination with the drug rituximab.