Abstract
Stem cell transplantation (SCT) has become the treatment of choice for patients with relapsed aggressive non-Hodgkin's lymphoma (NHL). The role of SCT in the management of patients with low-grade NHL remains more controversial, although increasing numbers of patients with advanced-stage follicular lymphoma, mantle cell lymphoma, and chronic lymphocytic leukemia are now undergoing SCT. To date, most patients with NHL have been treated with autologous SCT, currently using peripheral blood stem cells (PBSC) mobilized by chemotherapy and recombinant growth factors. There is increasing concern regarding toxicity of autologous SCT, especially the higher than expected long-term risk of development of myelodysplastic syndrome. This, among other factors, has led to renewed interest in the role of allogeneic SCT for patients with NHL. A major advantage of allogeneic SCT is the potential to exploit a graft-versus-lymphoma effect, and many studies are underway exploring the possibility of manipulating donor cells to maximize T cell responsiveness against lymphoma.
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