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KRAS rs61764370 is associated with HER2-overexpressed and poorly-differentiated breast cancer in hormone replacement therapy users [Elektronski vir] : a case control studyRožman, Jasmina Živa, 1981- ...Background A single nucleotide polymorphism located in the 3'-untranslated region of the KRAS oncogene (KRAS variant; rs61764370) disrupts a let-7 miRNA binding and was recently reported to act as a ... genetic marker for increased risk of developing human cancers. We aimed to investigate an association of the KRAS variant with sporadic and familial breast cancer and breast tumor characteristics. Methods Genotyping was accomplished in 530 sporadic postmenopausal breast cancer cases, 165 familial breast cancer cases (including N = 29, who test positive for BRCA1/2 mutations) and 270 postmenopausal control women using the flurogenic 5' nuclease assay. Information on hormone replacement therapy (HRT) use and tumor characteristicsin sporadic breast cancer cases was ascertained from a postal questionnaire and pathology reports, respectively. Associations between the KRAS genotype and breast cancer or breast tumor characteristics were assessed using chi-square test and logistic regression models. Results No evidence of association was observed between the KRAS variant and risk of sporadic and familial breast cancer - either among BRCA carriers or non-BRCA carriers. The KRAS variant was statisticallz significantly more often associated with human epidermal growth factor receptor 2 (HER2) - positive tumors and tumors of higher histopathologic grade. However, both associations were detected only in HRT users. Conclusion Our data do not support the hypothesis that the KRAS variant rs61764370 is implicated in the aetiology of sporadic or of familial breast cancer. In postmenopausal womer using HRT, the KRAS variant might lead to HER2 overexpressed and poorly-differentiated breast tumors, both indicatorsof worse prognosis.Source: BMC cancer [Elektronski vir]. - ISSN 1471-2407 (Vol. 12, no. 105, 2012, str. [1-12])Type of material - e-article ; adult, seriousPublish date - 2012Language - englishCOBISS.SI-ID - 1239931
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Rožman, Jasmina Živa, 1981- | 28510 |
Stegel, Vida | 23343 |
Geršak, Ksenija | 00814 |
Novaković, Srdjan | 08007 |
Source: Personal bibliographies
and: SICRIS
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