| Autor: |
de Smith AJ; Department of Epidemiology and Biostatistics and., Walsh KM, Ladner MB, Zhang S, Xiao C, Cohen F, Moore TB, Chokkalingam AP, Metayer C, Buffler PA, Trachtenberg EA, Wiemels JL |
| Jazyk: |
angličtina |
| Zdroj: |
Blood [Blood] 2014 Apr 17; Vol. 123 (16), pp. 2497-503. Date of Electronic Publication: 2014 Feb 11. |
| DOI: |
10.1182/blood-2013-11-540625 |
| Abstrakt: |
Killer cell immunoglobulin-like receptors (KIRs), via interaction with their cognate HLA class I ligands, play a crucial role in the development and activity of natural killer cells. Following recent reports of KIR gene associations in childhood acute lymphoblastic leukemia (ALL), we present a more in-depth investigation of KIR genes and their cognate HLA ligands on childhood ALL risk. Genotyping of 16 KIR genes, along with HLA class I groups C1/C2 and Bw4 supertype ligands, was carried out in 212 childhood ALL cases and 231 healthy controls. Frequencies of KIR genes, KIR haplotypes, and combinations of KIR-HLA ligands were tested for disease association using logistic regression analyses. KIR A/A genotype frequency was significantly increased in cases (33.5%) compared with controls (24.2%) (odds ratio [OR] = 1.57; 95% confidence interval [CI], 1.04-2.39). Stratifying analysis by ethnicity, a significant difference in KIR genotype frequency was demonstrated in Hispanic cases (34.2%) compared with controls (21.9%) (OR = 1.86; 95% CI, 1.05-3.31). Homozygosity for the HLA-Bw4 allele was strongly associated with increased ALL risk exclusively in non-Hispanic white children (OR = 3.93; 95% CI, 1.44-12.64). Our findings suggest a role for KIR genes and their HLA ligands in childhood ALL etiology that may vary among ethnic groups. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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