[Relationship between CMV reactivation and KIR haplotype/HLA-Cw genotype in patients after unrelated-donor hematopoietic stem cell transplantation.].
OBJECTIVE
To explore the relationship between CMV reactivation and KIR haplotype or HLA-Cw genotype in patients after unrelated-donor hematopoietic stem cell transplantation (HSCT).


METHODS
From January 2003 to December 2008 the HLA-Cw/KIR genotype of 48 patient-donor pairs were determined by polymerase chain reaction with sequence specific primers (PCR-SSP) and sequence specific nucleotide (PCR-SSOP). Posttransplant CMV reactivation was performed by immune histochemically assay.


RESULTS
Of 48 patients, 15 were transplanted from unrelated donors with an antigen mismatch for HLA Cw and 33 patient-donor pairs were matched for HLA-Cw. The CMV reaction rate was 66.7% for HLA-Cw mismatch group and 48.5% for HLA-Cw match group (chi(2) = 1.39, P = 0.2375). Thirty-seven donor-patients pairs belonged to group C1 and 11 to group C2, and CMV reaction rate was 64.9% in group C1 and 18.2% in group C2 (chi(2) = 18.13, P < 0.0001). Twenty-six patients received graft from KIR haplotype A (group A donor) and 22 from KIR haplotype B donors (group B donor) and CMV reaction rate was 57.7% in group A donor and 50.0% in group B donor (chi(2) = 0.28, P = 0.5941). The number of donor activating KIRs (aKIRs) was less than that of recipient aKIRs in 34 patient-donor pairs in which the CMV reaction rate was 70.6%, and the number of donor aKIRs was more than that of recipient aKIRs in 14 patient-donor pairs in which the CMV reactivation was 14.3%. There was a significan difference between the two group (chi(2) = 12.44, P = 0.0004).


CONCLUSIONS
KIR and HLA-Cw genotypes influence the rate of CMV reactivation following non-T cell deleted unrelated donor hematopoietic cell transplantation.
The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Suzhou 215006, China.
Xiao-Jin
XJ
Wu
Jun
J
He
De-Pei
DP
Wu
Ai-Ning
AN
Sun
Xiao-Jing
XJ
Bao
Qiao-Cheng
QC
Qiu
Xiao-Ni
XN
Yuan
Wei-Yang
WY
Li
Hui-Rong
HR
Chang
Yue
Y
Han
Xiao
X
Ma
Zi-Ling
ZL
Zhu
Yang
Y
Xu
Yu-Feng
YF
Feng
Li-Jun
LJ
Dai
D005838:Genotype; D015236:HLA-C Antigens / Q000235:genetics; D006239:Haplotypes; D018380:Hematopoietic Stem Cell Transplantation; D006801:Humans; D054340:Receptors, KIR / Q000235:genetics
D015236:HLA-C Antigens; D054340:Receptors, KIR