title: Allogeneic peripheral blood stem cell rescue of late graft failure after bone marrow transplantation in patients with aplastic anemia.
abstract: We investigated the effect and outcome of allogeneic peripheral blood stem cell (PBSC) rescue for aplastic anemia (AA) patients with graft failure after allogeneic bone marrow transplantation (BMT). Seven (28%) of 25 AA patients who received BMT from HLA-identical sibling donors developed late graft failure at a median of 7 months (range, 2.0-9.3 months) after transplantation. The patients with graft failure were treated with PBSC collected from the original donor after mobilization with granulocyte-colony stimulating factor (G-CSF). The median boost dose of peripheral blood mononuclear cells was 3.1 x 10(8)/kg (range, 1.4-11.9 x 10(8)/kg). Median times to reach an absolute neutrophil count greater than 0.5 x 10(9)/L and a platelet count greater than 50 x 10(9)/L were 7 days (range, 4-14 days) and 9 days (range, 3-41 days), respectively. There was sustained graft function in 6 of 7 patients, with a median follow-up duration of 3.3 yr (range, 1.0-6.2 yr). Grade-I acute graft-versus-host disease (GVHD) occurred in 2 patients, while extensive chronic GVHD developed in 3 patients. This report shows that G-CSF-mobilized allogeneic PBSC rescue is very effective in achieving complete and sustained engraftment in patients with AA after graft failure. However, more efficacious measures to prevent extensive chronic GVHD remain to be developed.
authors.affiliation: Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea.
authors.forename: Ik-Joo
authors.initials: IJ
authors.lastname: Chung
authors.forename: Je-Jung
authors.initials: JJ
authors.lastname: Lee
authors.forename: Moo-Rim
authors.initials: MR
authors.lastname: Park
authors.forename: Hoon
authors.initials: H
authors.lastname: Kook
authors.forename: Sang-Hee
authors.initials: SH
authors.lastname: Cho
authors.forename: Tai-Ju
authors.initials: TJ
authors.lastname: Hwang
authors.forename: Hyeoung-Joon
authors.initials: HJ
authors.lastname: Kim
mesh_terms: D000293:Adolescent; D000328:Adult; D000741:Anemia, Aplastic / Q000628:therapy*; D016026:Bone Marrow Transplantation; D002648:Child; D002675:Child, Preschool; D005260:Female; D006085:Graft Survival; D006086:Graft vs Host Disease; D016179:Granulocyte Colony-Stimulating Factor / Q000008:administration & dosage / Q000494:pharmacology; D018380:Hematopoietic Stem Cell Transplantation; D006412:Hematopoietic Stem Cells / Q000187:drug effects / Q000378:metabolism; D006801:Humans; D007223:Infant; D008297:Male; D015996:Survival Rate; D014184:Transplantation, Homologous; D016896:Treatment Outcome
chemical_list: D016179:Granulocyte Colony-Stimulating Factor