title: Telomere length predicts neutrophil recovery in the absence of G-CSF after autologous peripheral blood stem cell transplantation.
abstract: Haemopoietic regeneration after autologous peripheral blood progenitor cell (PBPC) transplantation can be delayed in some patients despite adequate infusion of CD34(+) cells. This suggests variability in the proliferation potential of the implanted cells, a capacity that may be predicted by their telomere length. To test this theory, telomere length was measured on stored apheresis samples from 36 patients aged 46.6+/-11.1 years, who had undergone successful autologous PBPC transplantation with a median of 5.6 x 10(6)/kg (1.3 x 10(6)-36.1 x 10(6)/kg) CD34(+) cells. The mean PBPC telomere length for the cohort was 9.4+/-2.3 kbp. For patients who did not receive G-CSF post transplantation (n=7), days to absolute neutrophil recovery (ANC), >/=0.1, 0.5 and 1.0 x 10(9) cells/l, were significantly inversely correlated with telomere length of the infused PBPC (r=-0.88, -0.81, -0.77, respectively; P<0.05,). However, no correlation was found for patients who received G-CSF from day 1 post transplantation (n=20). These data suggest that for transplantation with sufficient CD34(+) cells, neutrophil recovery is less efficient in patients receiving infusions of cells with short telomeres, but this deficiency can be corrected with adequate post transplantation administration of G-CSF. Bone Marrow Transplantation (2004) 34, 439-445. doi:10.1038/sj.bmt.1704607 Published online 19 July 2004
authors.affiliation: Hunter Haematology Research Group, Mater Misericordiae Hospital, Newcastle, NSW, Australia. leukres@hunterlink.net.au
authors.forename: L F
authors.initials: LF
authors.lastname: Lincz
authors.forename: F E
authors.initials: FE
authors.lastname: Scorgie
authors.forename: J A
authors.initials: JA
authors.lastname: Sakoff
authors.forename: K A
authors.initials: KA
authors.lastname: Fagan
authors.forename: S P
authors.initials: SP
authors.lastname: Ackland
authors.forename: A
authors.initials: A
authors.lastname: Enno
mesh_terms: D000293:Adolescent; D000328:Adult; D001781:Blood Component Removal; D001792:Blood Platelets / Q000166:cytology; D005260:Female; D016179:Granulocyte Colony-Stimulating Factor / Q000494:pharmacology*; D019337:Hematologic Neoplasms / Q000276:immunology / Q000628:therapy*; D018380:Hematopoietic Stem Cell Transplantation / Q000009:adverse effects*; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D008875:Middle Aged; D009504:Neutrophils / Q000166:cytology*; D011237:Predictive Value of Tests; D020127:Recovery of Function / Q000276:immunology; D016615:Telomere
chemical_list: D016179:Granulocyte Colony-Stimulating Factor