- Relapsed or refractory peripheral T-cell lymphoma including the following histologies: peripheral T-cell lymphoma not otherwise specified, angioimmunoblastic T-cell lymphoma, anaplastic large cell lymphoma, enteropathy associated T-cell lymphoma, extranodal NK/T-cell lymphoma, transformed mycosis fungoides, hepatosplenic T-cell lymphoma [For all relapsed patients, relapse must be confirmed by tissue biopsy (or bone marrow trephine if no other tissue available). For refractory patients, a biopsy must have been obtained within the last 6 months and preferably to confirm refractory disease.]