Volume 52, Issue S1 pp. 52-59
Research Article

Associations of polymorphisms in the genes of FGFR2, FGF1, and RBFOX2 with breast cancer risk by estrogen/progesterone receptor status

Yu-Ling Cen

Yu-Ling Cen

The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China

The School of Public Health, Sun Yat-Sen University, Guangzhou, China

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Mei-Ling Qi

Mei-Ling Qi

The School of Public Health, Sun Yat-Sen University, Guangzhou, China

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Hai-Gang Li

Hai-Gang Li

The Second Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China

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Yi Su

Yi Su

The School of Public Health, Sun Yat-Sen University, Guangzhou, China

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Li-Juan Chen

Li-Juan Chen

The School of Public Health, Sun Yat-Sen University, Guangzhou, China

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Ying Lin

Ying Lin

The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China

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Wei-Qing Chen

Wei-Qing Chen

The School of Public Health, Sun Yat-Sen University, Guangzhou, China

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Xiao-Ming Xie

Xiao-Ming Xie

The Cancer Center, Sun Yat-Sen University, Guangzhou, China

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Lu-Ying Tang

Corresponding Author

Lu-Ying Tang

The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China

The School of Public Health, Sun Yat-Sen University, Guangzhou, China

The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Rd, Guangzhou 510630, China.

The School of Public Health, Sun Yat-Sen University, 74 Zhongshan 2nd Rd, Guangzhou 510080, China.

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Dr. Ze-Fang Ren

Corresponding Author

Dr. Ze-Fang Ren

The School of Public Health, Sun Yat-Sen University, Guangzhou, China

The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Rd, Guangzhou 510630, China.

The School of Public Health, Sun Yat-Sen University, 74 Zhongshan 2nd Rd, Guangzhou 510080, China.

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First published: 09 November 2012
Citations: 13
The authors declare that they do not have any potential conflict of interest.
Yu-Ling Cen and Mei-Ling Qi contributed equally to this work.

Abstract

Genetic polymorphisms of fibroblast growth factor receptor 2 (FGFR2) have been demonstrated to be associated with breast cancer risk, presumably through elevation of FGFR2 expression. Fibroblast growth factor 1 (FGF1) and RNA binding protein fox-1 homolog 2 (RBFOX2), which are functionally related to FGFR2, may also associate with breast cancer risk. We investigated the associations between breast cancer risk and the polymorphisms of FGFR2 rs2981582, FGF1 rs250108, and RBFOX2 rs2051579 among 839 incident breast cancer cases and 863 age-matched controls in the Guangzhou Breast Cancer Study. Stratified odds ratios (ORs) and 95% confidence intervals (CIs) were calculated by estrogen receptor (ER)/progesterone receptor (PR) status using multivariate logistic regression. FGFR2 rs2981582 was confirmed to be significantly associated with the risk of ER-positive but not ER-negative breast cancer. In contrast, FGF1 rs250108 was significantly associated with the risk of ER-negative breast cancer (OR (95% CI) = 1.68 (1.20–2.35) for CT + TT vs. CC genotype) but not ER-positive breast cancer. CA + AA genotypes at RBFOX2 rs2051579 were associated with a reduced risk of ER-negative (0.71 (0.52–0.97)) but not ER-positive breast cancer compared to the CC genotype. Similar results were observed when differentiating breast cancer cases by PR status. Neither of the pairs between the three SNPs had a significant interaction on breast cancer risk. Our findings show a suggestively stronger association between FGFR2 rs2981582 and ER-positive breast cancer risk and suggest a greater association of FGF1 rs250108 and RBFOX2 rs2051579 with ER-negative compared to ER-positive breast cancer. © 2012 Wiley Periodicals, Inc.

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