Autologous stem cell transplantation (ASCT), in chemosensitive relapsed patients with Hodgkin's lymphoma (HL) and non-Hodgkin's lymphoma (NHL), is associated with superior event-free survival (EFS) compared with salvage chemotherapy alone. BEAM is one of the most commonly used regimens in both HL and NHL because of its acceptable toxicity and high effectiveness. The nonrelapsed mortality (NRM) ranges from 7 to 10% in historical studies. More recent investigations have demonstrated a lower NRM, probably due to various factors such as the use of peripheral blood precursor cells and better support therapy. Recently, in order to reduce the toxicity of carmustine and increase antilymphoma activity, several groups have introduced conditioning regimens similar to BEAM. The incorporation of newer drugs (anti-CD20 monoclonal antibodies ± radiolabeled) to 'classic' BEAM, or the substitution of carmustine with other drugs (thiotepa, bendamustine and High-dose chemotherapy (HCT) followed by autologous stem cell transplantation (ASCT) represents a valuable strategy for chemosensitive relapsed patients with Hodgkin's lymphoma (HL) and non-Hodgkin's lymphoma (NHL), and shows superior event-free survival compared with salvage chemotherapy alone.BEAM, which includes carmustine (BCNU), etoposide, cytarabine and melphalan, is one of the most commonly used regimens in both HL and NHL because of its acceptable toxicity and high effectiveness.The nonrelapsed mortality (NRM) of BEAM has been shown to range from 7 to 10% in historical studies. More recent investigations have demonstrated a lower NRM, probably due to various factors such as the use of peripheral blood precursor cells and better support therapy.Recently, in order to reduce the toxicity of BCNU and increase its antilymphoma activity, several study groups have introduced conditioning regimens similar to BEAM.Radioimmunotherapy-based conditionings have a relapse incidence similar to total body irradiation, but with lower toxicity, resulting in improved overall survival.The second-generation BEAM regimens, in which BCNU is substituted with other drugs (i.e., thiotepa, bendamustine and fotemustine), may be a valuable strategy to further reduce toxicity and increase the antilymphoma activity of ASCT.