Chimerism Analysis Following Hematopoietic Stem Cell Transplantation

This white paper discusses the role of chimerism following hematopoietic stem cell transplantation (HSCT). It begins with an introduction to HSCT, highlighting its significance as a curative treatment for various hematological diseases. The paper outlines the historical context of HSCT, noting the advancements made since the first attempts in 1957. It details the complications associated with HSCT, including graft-versus-host disease (GVHD) and the recurrence of underlying malignant diseases. The paper emphasizes the importance of monitoring chimerism to assess treatment outcomes and the risk of relapse in patients. It describes the definition of chimerism, the various types, and the methodologies used for analysis, such as PCR amplification of polymorphic DNA sequences. The paper also discusses the clinical implications of chimerism analysis, including the need for regular sampling and the significance of lineage-specific chimerism in understanding engraftment dynamics. Overall, this document serves as a comprehensive resource on the implications of chimerism in HSCT.