2. Patients with: 2. 1. DLBCL with one of the following: 2.1.1. Primary refractory (no CR to 1st line). 2.1.2. High-risk relapse (CR1 <6 months, secondary IPI >1, high LDH). 2.1.3. Refractory relapse: No response (SD or PD) to >/= 1 line of salvage. 2.2. Hodgkin's with one of the following: 2.2.1. Primary refractory (no CR to 1st line or PD within 3 months). 2.2.2. High-risk relapse (CR1 <1 year, extranodal relapse, B symptoms). 2.2.3. Refractory relapse: No response (SD or PD) to >/= 1 line of salvage. 2.3. T-NHL with one of the following: 2.3.1. Primary refractory (</= CR to 1st line or relapse within 6 months). 2.3.2. Nonresponsive (SD/PD) to >/= 1 line of salvage. 2.4. Burkitt's or lymphoblastic lymphoma with one of the following: 2.4.1. Primary refractory (</= CR to 1st line or relapse within 6 months). 2.4.2. Refractory to at least 1 line of salvage (SD/PD).