Allogeneic HSCT for autoimmune diseases: conventional conditioning regimens

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Abstract
Allogeneic hematopoietic stem cell transplantation (HSCT) tests the hypothesis that the replacement of a 'diseased' autoreactive immunological and stem cell compartment with one that is not autoreactive (but potentially alloreactive) can cure severe autoimmune diseases. The primary risks of allogeneic HSCT are the morbidity and morality associated with delayed immune reconstitution and GVHD. Although the risk of complications and mortality is greater than autologous HSCT, studies of allogeneic HSCT should be conducted in selected cases because there is a greater potential for sustained remissions. This review will discuss the anticipated results from allogeneic HSCT by summarizing outcomes in aplastic anemia and chronic myelogenous leukemia as well as a brief description of Seattle's experience with allogeneic HSCT in the first two patients with systemic sclerosis.