title: CD34 + cell dose and outcome of patients undergoing reduced-intensity-conditioning allogeneic peripheral blood stem cell transplantation.
abstract: While in bone marrow allogeneic transplantation the infusion of high doses of progenitor stem cells has a favourable impact on outcome, due to a faster hematopoietic and immune recovery, in the peripheral blood allo-setting the infusion of a high number of CD34 cells increases the risk of extensive chronic graft vs. host disease (cGVHD). This higher incidence of extensive cGVHD has an adverse impact on outcome due to a higher transplant related mortality, specially among patients receiving T-cell depleted allogeneic transplantation with myeloablative conditioning. By contrast, patients undergoing reduced intensity conditioning regimen may benefit from increasing higher CD34 + cell doses, especially those categorized as high risk according to disease status at transplant. Thus, the source of progenitors cells, type of conditioning and GVHD prophylaxis, among other factors, may influence the effect of the progenitor cell dose on outcome after allogeneic transplant.
authors.affiliation: Hospital Clínico Universitario, Salamanca, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Díez-Campelo
authors.forename: J A
authors.initials: JA
authors.lastname: Pérez-Simón
authors.forename: E M
authors.initials: EM
authors.lastname: Ocio
authors.forename: C
authors.initials: C
authors.lastname: Castilla
authors.forename: J R
authors.initials: JR
authors.lastname: González-Porras
authors.forename: F M
authors.initials: FM
authors.lastname: Sánchez-Guijo
authors.forename: L
authors.initials: L
authors.lastname: Vázquez
authors.forename: M D
authors.initials: MD
authors.lastname: Caballero
authors.forename: M C
authors.initials: MC
authors.lastname: Cañizo
authors.forename: J F
authors.initials: JF
authors.lastname: San Miguel
mesh_terms: D018952:Antigens, CD34; D002452:Cell Count; D006086:Graft vs Host Disease / Q000517:prevention & control; D006412:Hematopoietic Stem Cells; D006801:Humans; D036102:Peripheral Blood Stem Cell Transplantation / Q000379:methods*; D019172:Transplantation Conditioning / Q000379:methods*; D014184:Transplantation, Homologous; D016896:Treatment Outcome
chemical_list: D018952:Antigens, CD34