- To assess the safety and adverse events associated with (90)Y-daclizumab (humanized anti-CD25) radioimmunotherapy (RIT) in combination with high-dose BEAM (carmustine, etoposide, cytarabine, [Ara-C, cytosine arabinoside] and melphalan) chemotherapy and autologous hematopoietic stem cell transplantation (ASCT) in patients with relapsed or refractory Hodgkin s lymphoma (HL) with adverse prognostic factors.