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| Content Provider | PubMed Central |
|---|---|
| Author | Patel, Alpa V. Cheng, Iona Canzian, Federico Marchand, Loïc Le Thun, Michael J. Berg, Christine D. Buring, Julie Calle, Eugenia E. Chanock, Stephen Francoise, Clavel-chapelon Cox, David G. Dorronsoro, Miren Laure, Dossus Haiman, Christopher A. Hankinson, Susan E. Henderson, Brian E. Hoover, Robert Hunter, David J. Rudolf, Kaaks Kolonel, Laurence N. Kraft, Peter Jakob, Linseisen Lund, Eiliv Jonas, Manjer Mccarty, Catherine Peeters, Petra H. M. Pike, Malcolm C. Pollak, Michael Elio, Riboli Stram, Daniel O. Tjonneland, Anne Travis, Ruth C. Trichopoulos, Dimitrios Rosario, Tumino Yeager, Meredith Ziegler, Regina G. Feigelson, Heather Spencer |
| Editor | Kronenberg, Florian |
| Copyright Year | 2008 |
| Abstract | IGF-1 has been shown to promote proliferation of normal epithelial breast cells, and the IGF pathway has also been linked to mammary carcinogenesis in animal models. We comprehensively examined the association between common genetic variation in the IGF1, IGFBP1, and IGFBP3 genes in relation to circulating IGF-I and IGFBP-3 levels and breast cancer risk within the NCI Breast and Prostate Cancer Cohort Consortium (BPC3). This analysis included 6,912 breast cancer cases and 8,891 matched controls (n = 6,410 for circulating IGF-I and 6,275 for circulating IGFBP-3 analyses) comprised primarily of Caucasian women drawn from six large cohorts. Linkage disequilibrium and haplotype patterns were characterized in the regions surrounding IGF1 and the genes coding for two of its binding proteins, IGFBP1 and IGFBP3. In total, thirty haplotype-tagging single nucleotide polymorphisms (htSNP) were selected to provide high coverage of common haplotypes; the haplotype structure was defined across four haplotype blocks for IGF1 and three for IGFBP1 and IGFBP3. Specific IGF1 SNPs individually accounted for up to 5% change in circulating IGF-I levels and individual IGFBP3 SNPs were associated up to 12% change in circulating IGFBP-3 levels, but no associations were observed between these polymorphisms and breast cancer risk. Logistic regression analyses found no associations between breast cancer and any htSNPs or haplotypes in IGF1, IGFBP1, or IGFBP3. No effect modification was observed in analyses stratified by menopausal status, family history of breast cancer, body mass index, or postmenopausal hormone therapy, or for analyses stratified by stage at diagnosis or hormone receptor status. In summary, the impact of genetic variation in IGF1 and IGFBP3 on circulating IGF levels does not appear to substantially influence breast cancer risk substantially among primarily Caucasian postmenopausal women. |
| Related Links | http://dx.doi.org/10.1371/journal.pone.0002578 |
| Starting Page | 2578 |
| File Format | |
| ISSN | 19326203 |
| e-ISSN | 19326203 |
| Journal | PLoS ONE |
| Issue Number | 7 |
| Volume Number | 3 |
| Language | English |
| Publisher | Public Library of Science |
| Publisher Date | 2008-07-01 |
| Access Restriction | Open |
| Rights Holder | Public Library of Science |
| Subject Keyword | Biochemistry, Genetics and Molecular Biology(all) Agricultural and Biological Sciences(all) Medicine(all) Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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