Association of rs712 polymorphism in a let-7 microRNA-binding site of KRAS gene with colorectal cancer in a Mexican population

Martha Patricia, Gallegos and Zúñiga-González, Guillermo Moisés and Gómez-Mariscal, Karen and Rosales-Reynoso, Mónica Alejandra and Figuera, Luis E and Puebla-Pérez, Ana María and Pineda-Razo, Tomas (2019) Association of rs712 polymorphism in a let-7 microRNA-binding site of KRAS gene with colorectal cancer in a Mexican population. Iranian Journal of Basic Medical Sciences, 22 (3). pp. 324-327.

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Abstract

Objective(s): The rs712 polymorphism in a let-7 microRNA-binding site at KRAS gene has been associated with cancer. To examine its association with rs712 polymorphism, we analyzed Mexican individuals with colorectal cancer (CRC) and healthy subjects. Materials and Methods: Genotyping of the rs712 polymorphism was performed by polymerase chain reaction in 281 controls and 336 CRC patients. Results: The observed frequencies of rs712 polymorphism indicated an associated protective factor for CRC (P=0.032). An association between genotype and the disease was evident in: colon localization (allele T, odds ratio (OR) 3.82, 95 confidence Intervals (CI) 2.77-5.28, P=0.0001), node metastasis (genotype TT, OR 2.49, 95 CI 1.45-4.28, P=0.0009), poor differentiation (genotype GT, OR 2.35, 95 CI 1.35-4.1, P=0.0033), and poor chemotherapy response (genotype GT, OR 2.6, 95 CI 1.7-4.24, P=0.0001). Conclusion: Comparison of the data from patients with control group showed that polymorphism of rs712 in KRAS gene was protective factor, which was associated with susceptibility for CRC. However, the genotypes TT and GT of rs712 polymorphism in KRAS could contribute significantly to colon localization, node metastasis, poor differentiation and poor chemotherapy response in CRC patients in this sample population.

Item Type: Article
Subjects: QV pharmacology
Divisions: Journals > Iranian J Basic Medical Sciences
Depositing User: ijbms ijbms
Date Deposited: 10 Jun 2019 08:03
Last Modified: 10 Jun 2019 08:03
URI: http://eprints.mums.ac.ir/id/eprint/11282

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