Genome-wide association study of circulating estradiol, testosterone, and sex hormone-binding globulin in postmenopausal women.
Genome-wide association studies (GWAS) have successfully identified common genetic variants that contribute to breast cancer risk. Discovering additional variants has become difficult, as power to detect variants of weaker effect with present sample sizes is limited. An alternative approach is to lo...
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Public Library of Science (PLoS)
2012-01-01
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| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0037815&type=printable |
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| author | Jennifer Prescott Deborah J Thompson Peter Kraft Stephen J Chanock Tina Audley Judith Brown Jean Leyland Elizabeth Folkerd Deborah Doody Susan E Hankinson David J Hunter Kevin B Jacobs Mitch Dowsett David G Cox Douglas F Easton Immaculata De Vivo |
| author_facet | Jennifer Prescott Deborah J Thompson Peter Kraft Stephen J Chanock Tina Audley Judith Brown Jean Leyland Elizabeth Folkerd Deborah Doody Susan E Hankinson David J Hunter Kevin B Jacobs Mitch Dowsett David G Cox Douglas F Easton Immaculata De Vivo |
| author_sort | Jennifer Prescott |
| collection | DOAJ |
| description | Genome-wide association studies (GWAS) have successfully identified common genetic variants that contribute to breast cancer risk. Discovering additional variants has become difficult, as power to detect variants of weaker effect with present sample sizes is limited. An alternative approach is to look for variants associated with quantitative traits that in turn affect disease risk. As exposure to high circulating estradiol and testosterone, and low sex hormone-binding globulin (SHBG) levels is implicated in breast cancer etiology, we conducted GWAS analyses of plasma estradiol, testosterone, and SHBG to identify new susceptibility alleles. Cancer Genetic Markers of Susceptibility (CGEMS) data from the Nurses' Health Study (NHS), and Sisters in Breast Cancer Screening data were used to carry out primary meta-analyses among ~1600 postmenopausal women who were not taking postmenopausal hormones at blood draw. We observed a genome-wide significant association between SHBG levels and rs727428 (joint β = -0.126; joint P = 2.09 × 10(-16)), downstream of the SHBG gene. No genome-wide significant associations were observed with estradiol or testosterone levels. Among variants that were suggestively associated with estradiol (P<10(-5)), several were located at the CYP19A1 gene locus. Overall results were similar in secondary meta-analyses that included ~900 NHS current postmenopausal hormone users. No variant associated with estradiol, testosterone, or SHBG at P<10(-5) was associated with postmenopausal breast cancer risk among CGEMS participants. Our results suggest that the small magnitude of difference in hormone levels associated with common genetic variants is likely insufficient to detectably contribute to breast cancer risk. |
| format | Article |
| id | doaj-art-b65522c5872b4fa2a841f3c50e149063 |
| institution | Kabale University |
| issn | 1932-6203 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-b65522c5872b4fa2a841f3c50e1490632025-08-20T03:46:53ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-0176e3781510.1371/journal.pone.0037815Genome-wide association study of circulating estradiol, testosterone, and sex hormone-binding globulin in postmenopausal women.Jennifer PrescottDeborah J ThompsonPeter KraftStephen J ChanockTina AudleyJudith BrownJean LeylandElizabeth FolkerdDeborah DoodySusan E HankinsonDavid J HunterKevin B JacobsMitch DowsettDavid G CoxDouglas F EastonImmaculata De VivoGenome-wide association studies (GWAS) have successfully identified common genetic variants that contribute to breast cancer risk. Discovering additional variants has become difficult, as power to detect variants of weaker effect with present sample sizes is limited. An alternative approach is to look for variants associated with quantitative traits that in turn affect disease risk. As exposure to high circulating estradiol and testosterone, and low sex hormone-binding globulin (SHBG) levels is implicated in breast cancer etiology, we conducted GWAS analyses of plasma estradiol, testosterone, and SHBG to identify new susceptibility alleles. Cancer Genetic Markers of Susceptibility (CGEMS) data from the Nurses' Health Study (NHS), and Sisters in Breast Cancer Screening data were used to carry out primary meta-analyses among ~1600 postmenopausal women who were not taking postmenopausal hormones at blood draw. We observed a genome-wide significant association between SHBG levels and rs727428 (joint β = -0.126; joint P = 2.09 × 10(-16)), downstream of the SHBG gene. No genome-wide significant associations were observed with estradiol or testosterone levels. Among variants that were suggestively associated with estradiol (P<10(-5)), several were located at the CYP19A1 gene locus. Overall results were similar in secondary meta-analyses that included ~900 NHS current postmenopausal hormone users. No variant associated with estradiol, testosterone, or SHBG at P<10(-5) was associated with postmenopausal breast cancer risk among CGEMS participants. Our results suggest that the small magnitude of difference in hormone levels associated with common genetic variants is likely insufficient to detectably contribute to breast cancer risk.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0037815&type=printable |
| spellingShingle | Jennifer Prescott Deborah J Thompson Peter Kraft Stephen J Chanock Tina Audley Judith Brown Jean Leyland Elizabeth Folkerd Deborah Doody Susan E Hankinson David J Hunter Kevin B Jacobs Mitch Dowsett David G Cox Douglas F Easton Immaculata De Vivo Genome-wide association study of circulating estradiol, testosterone, and sex hormone-binding globulin in postmenopausal women. PLoS ONE |
| title | Genome-wide association study of circulating estradiol, testosterone, and sex hormone-binding globulin in postmenopausal women. |
| title_full | Genome-wide association study of circulating estradiol, testosterone, and sex hormone-binding globulin in postmenopausal women. |
| title_fullStr | Genome-wide association study of circulating estradiol, testosterone, and sex hormone-binding globulin in postmenopausal women. |
| title_full_unstemmed | Genome-wide association study of circulating estradiol, testosterone, and sex hormone-binding globulin in postmenopausal women. |
| title_short | Genome-wide association study of circulating estradiol, testosterone, and sex hormone-binding globulin in postmenopausal women. |
| title_sort | genome wide association study of circulating estradiol testosterone and sex hormone binding globulin in postmenopausal women |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0037815&type=printable |
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