Abstract
Cyclooxygenase-2 (COX-2) alleles have been associated with allograft outcomes in kidney transplant recipients; however, these alleles may be in linkage with other genes. Human allograft inflammatory factor-1 (AIF-1) is a cytoplasmic protein and is produced by macrophages. Its synthesis is regulated by several cytokines, including interferon gamma. We investigated whether polymorphisms of gene encoding COX-2 and AIF-1 were associated with allograft outcomes among Hispanic renal transplant recipients (RTRs). A total of 527 de novo RTRs of Hispanic ethnicity were included in this study transplanted at St. Vincent Medical Center (SVMC) during 2000-2009. Patients were genotyped for the following: COX-2 (-1195C>T rs689466, intron 6 rs2066826) and AlF1 (rs2269475). Analysis of the results showed that COX-2-1195 CC genotype (OR=1.92, CI%=1.00-3.67, p=0.04) were more frequent, but COX-2-1195 CT genotype was less frequent in kidney allograft acute rejection in comparison with control group (OR=0.59, CI%=0.38-0.91, p=0.017). The genetic variant TT/CT of the AIF-1 gene was associated with a lower risk of rejection (OR=0.63, CI%=0.41-0.98, p=0.038). No association of COX-2 (rs2066826) was observed with allograft rejection. We are unable to find statistically significant association between COX-2 and AIF-1 gene polymorphisms and allograft survival. The -1195C>T in the COX-2 promoter and AIF-1 gene polymorphisms could be a potential predictor of allograft rejection in our Hispanic kidney transplant recipients.
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