12 October 2016 : Clinical Research
Association of Vascular Endothelial Growth Factor (VEGF) Gene Polymorphisms with the Risk and Prognosis of Cutaneous Squamous Cell CarcinomaXiao-juan NieBCDEF, Wen-min LiuBCDEF, Li ZhangABCFG
Med Sci Monit 2016; 22:3658-3665
BACKGROUND: Cutaneous squamous cell carcinoma (cSCC) is the second most common type of non-melanoma skin cancer (NMSC) globally. The aims of this study were to further systematically clarify the potential association of rs833061 (-460 C>T) and rs1570360 (-1154 G>A), two SNPs of VEGF, with the risk of cSCC and the prognostic impacts on cSCC patients.
MATERIAL AND METHODS: This hospital-based case-control study analyzed peripheral venous blood collected from 100 cSCC patients and 124 healthy controls, and gathered personal information on patients. Genotypes of the VEGF gene -460C>T and -1154G>A polymorphism were detected using polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP) method. Different distributions of allele frequencies and genotype in the case and control group were measured, comparing different genotype differences in the survival of patients with cSCC.
RESULTS: Distributions of allele frequencies and genotype of -460 C>T in the case and control group were statistically different; the TT + CT genotype was significantly correlated with a decrease risk of cSCC (OR=0.36, 95% CI=0.21–0.63, P<0.001). There was no difference in the distribution of allele frequencies and genotype of -1154 G>A between control and case groups. For -1154460C>T, the CC genotype was an adverse factor, associated with a significant decrease in the survival status of cSCC patients (P<0.001). For VEGF-1154 G>A, the AA genotype was significantly correlated with the reduced overall survival in cSCC patients, with the mean survival time of 23.88 months (P=0.009).
CONCLUSIONS: The VEGF gene -460 C>T polymorphism and -1154 G>A polymorphism may serve as potential genetic markers for the risk and prognosis of cSCC.
Keywords: Carcinoma, Squamous Cell - mortality, Alleles, Case-Control Studies, China, Gene Frequency, Genetic Association Studies, Genetic Predisposition to Disease, Polymorphism, Single Nucleotide, Prognosis, Vascular Endothelial Growth Factor A - metabolism
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