Abstract
Aim:KRAS SNPs may increase KRAS transcription and KRAS levels. SNPs of KRAS 3'UTR can affect carcinoma risk and prognosis. Materials & methods: The rs8720 and rs7960917 in KRAS 3'UTR for colorectal carcinoma (CRC) risk and survival were investigated in a case-control study. Association between SNPs and CRC risk, survival analysis were analyzed by an unconditional logistic regression model, log-rank test, Kaplan-Meier estimation, Cox regression model and one-way analysis of variance. Results & conclusion: The genotype CT of rs8720 was significantly increased risk of CRC, decreased overall survival and event-free survival, and KRAS mRNA and protein expressions were significantly increased in individuals with rs8720 CT, TT genotype. rs8720 may be an important factor in CRC development and prognosis.
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