Clinical significance of platelet count at day +60 after allogeneic peripheral blood stem cell transplantation.
Thrombocytopenia (TP) is a frequent complication after allogeneic stem cell transplantation (SCT) and regarded as a poor prognostic factor, especially in patients with chronic graft-versus-host disease (GVHD), although various factors were related to the development of TP after allogeneic SCT. Sixty-three patients receiving allogeneic peripheral blood stem cell transplantation (PBSCT) were stratified according to platelet count (PC) at day +60 and analyzed in terms of overall survival (OS) and the incidence of non-relapse mortality (NRM). Ten patients (15.9%) were stratified in group 1 (PC </= 29 x 10(9)/L), 23 patients (36.5%) in group 2 (PC 30-79 x 10(9)/L), and 30 patients in group 3 (PC >/= 80 x 10(9)/L). Group 3 was associated with lower incidence of extensive chronic GVHD (p=0.013), better 3-yr OS (p=0.0030), and lower NRM rate (p<0.0001). In multivariate analyses, the PC at day +60 was identified as an independent prognostic factor (p=0.003) together with CD34+ cell dose (p<0.001), disease risk (p=0.004), and acute GVHD (p=0.033) in terms of NRM, and the PC (p=0.047) and CD34+ cell dose (p=0.026) in terms of incidence of infectious events. Measuring the platelet count at day +60 is a simple method for predicting the risk of chronic GVHD development and prognosis after allogeneic PBSCT.
Department of Hematology/Oncology, Kyungpook National University Hospital, Daegu, Korea.
Dong Hwan
DH
Kim
Sang Kyun
SK
Sohn
Jin Ho
JH
Baek
Jong Gwang
JG
Kim
Nan Young
NY
Lee
Dong Il
DI
Won
Jang Soo
JS
Suh
Kyu Bo
KB
Lee
D000293:Adolescent; D000328:Adult; D018952:Antigens, CD34 / Q000097:blood; D005260:Female; D006402:Hematologic Diseases / Q000097:blood / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009369:Neoplasms / Q000097:blood / Q000601:surgery; D036102:Peripheral Blood Stem Cell Transplantation; D010976:Platelet Count; D011379:Prognosis; D016019:Survival Analysis; D013997:Time Factors; D014184:Transplantation, Homologous; D016896:Treatment Outcome
D018952:Antigens, CD34