precursor T cell lymphoma peripheral T cell lymphoma, any subtype and variant angioimmunoblastic lymphoma anaplastic large cell lymphoma, any subtype NK / T cell lymphoma High risk relapsed or progressive disease is defined as (a) primary progressive disease, (b) early relapse after less than 12 month of remission duration and at least one risk factor according to the international prognostic index (IPI), (c) relapse or progression after high dose chemotherapy and autologous transplantation, (d) relapse or progression and lack of an autologous stem cell product.