<qa>  What is the name of the type of therapy that is used to assess the safety and efficI. To assess the safety and efficacy of lenalidomide in combination with standard induction therapy CHOEP- cyclophosphamide, doxorubicin doxorubicin hydrochloride, etoposide, vincristine vincristine sulfate and prednisone in patients with newly diagnosed stage II, III and IV peripheral T-cell lymphoma not otherwise specified NOS, anaplastic large cell lymphoma anaplastic lymphoma receptor tyrosine kinase ALK negative ALK positive if International Prognostic Index IPI 3, 4, or 5, angioimmunoblastic T-cell lymphoma, enteropathy associated T-cell lymphoma or hepatosplenic gamma delta T-cell lymphoma. 