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  • Title: An analysis of polymorphisms within the Wnt signaling pathway in relation to ovarian cancer risk in a Polish population.
    Author: Mostowska A, Pawlik P, Sajdak S, Markowska J, Pawałowska M, Lianeri M, Jagodzinski PP.
    Journal: Mol Diagn Ther; 2014 Feb; 18(1):85-91. PubMed ID: 24078348.
    Abstract:
    BACKGROUND AND OBJECTIVE: The Wnt/β-catenin signaling pathway has been considered to be a factor in the development and progression of ovarian cancer. METHODS: All patients with ovarian cancer and controls were tested for BRCA1 mutations (5382incC, C61G, 4153delA) with HybProbe assays and for BRCA2 mutation (5946delT) using high-resolution melting curve analysis (HRM). Mutation carriers were excluded from the association analysis. We studied nine single nucleotide polymorphisms (SNPs) located in CTNNB1 (β-catenin) [rs4533622, rs2953], APC (rs11954856, rs351771, rs459552), and AXIN2 (rs4074947, rs7224837, rs3923087, rs2240308) in women with ovarian cancer without BRCA1/BRCA2 mutations (n = 228) and controls (n = 282). Genotyping of CTNNB1 rs4533622, rs2953, APC rs351771, AXIN2 rs4074947, rs3923087, and rs2240308 was performed by HRM, while that of APC rs11954856, rs459552 and AXIN2 rs7224837 was conducted by PCR followed by the appropriate restriction enzyme digestion [PCR–restriction fragment length polymorphism (PCR-RFLP)]. RESULTS: The most common BRCA1/BRCA2 mutations were identified in 30 patients with ovarian cancer. These mutations were not found in controls. The lowest p values of the trend test (p trend) were observed for the APC rs351771 and rs11954856 SNPs in patients with ovarian cancer (p trend = 0.006 and p trend = 0.007, respectively). Using a dominant inheritance model, we found that the APC rs11954856 SNP is associated with an increased risk of ovarian cancer development [odds ratio = 2.034 (95 % CI 1.302–3.178); p = 0.002]. We also observed significant allelic differences for the APC rs351771 SNP between patients and controls (p = 0.006). CONCLUSION: Our study demonstrated significantly increased APC rs11954856 and rs351771 SNP frequencies in Polish women with ovarian cancer.
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