TY - JOUR
T1 - Fine-scale mapping of the 4q24 locus identifies two independent loci associated with breast cancer risk
AU - Guo, Xingyi
AU - Long, Jirong
AU - Zeng, Chenjie
AU - Michailidou, Kyriaki
AU - Ghoussaini, Maya
AU - Bolla, Manjeet K
AU - Wang, Qin
AU - Milne, Roger L
AU - Shu, Xiao-Ou
AU - Cai, Qiuyin
AU - Beesley, Jonathan
AU - Kar, Siddhartha P
AU - Andrulis, Irene L
AU - Anton-Culver, Hoda
AU - Arndt, Volker
AU - Beckmann, Matthias W
AU - Beeghly-Fadiel, Alicia
AU - Benitez, Javier
AU - Blot, William
AU - Bogdanova, Natalia
AU - Bojesen, Stig E
AU - Brauch, Hiltrud
AU - Brenner, Hermann
AU - Brinton, Louise
AU - Broeks, Annegien
AU - Brüning, Thomas
AU - Burwinkel, Barbara
AU - Cai, Hui
AU - Canisius, Sander
AU - Chang-Claude, Jenny
AU - Choi, Ji-Yeob
AU - Couch, Fergus J
AU - Cox, Angela
AU - Cross, Simon S
AU - Czene, Kamila
AU - Darabi, Hatef
AU - Devilee, Peter
AU - Droit, Arnaud
AU - Dörk, Thilo
AU - Fasching, Peter A
AU - Fletcher, Olivia
AU - Flyger, Henrik
AU - Fostira, Florentia
AU - Gaborieau, Valerie
AU - García-Closas, Montserrat
AU - Giles, Graham G
AU - Grip, Mervi
AU - Guénel, Pascal
AU - Haiman, Christopher A
AU - Hamann, Ute
AU - kConFab Investigators
N1 - ©2015 American Association for Cancer Research.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - BACKGROUND: A recent association study identified a common variant (rs9790517) at 4q24 to be associated with breast cancer risk. Independent association signals and potential functional variants in this locus have not been explored.METHODS: We conducted a fine-mapping analysis in 55,540 breast cancer cases and 51,168 controls from the Breast Cancer Association Consortium.RESULTS: Conditional analyses identified two independent association signals among women of European ancestry, represented by rs9790517 [conditional P = 2.51 × 10(-4); OR, 1.04; 95% confidence interval (CI), 1.02-1.07] and rs77928427 (P = 1.86 × 10(-4); OR, 1.04; 95% CI, 1.02-1.07). Functional annotation using data from the Encyclopedia of DNA Elements (ENCODE) project revealed two putative functional variants, rs62331150 and rs73838678 in linkage disequilibrium (LD) with rs9790517 (r(2) ≥ 0.90) residing in the active promoter or enhancer, respectively, of the nearest gene, TET2. Both variants are located in DNase I hypersensitivity and transcription factor-binding sites. Using data from both The Cancer Genome Atlas (TCGA) and Molecular Taxonomy of Breast Cancer International Consortium (METABRIC), we showed that rs62331150 was associated with level of expression of TET2 in breast normal and tumor tissue.CONCLUSION: Our study identified two independent association signals at 4q24 in relation to breast cancer risk and suggested that observed association in this locus may be mediated through the regulation of TET2.IMPACT: Fine-mapping study with large sample size warranted for identification of independent loci for breast cancer risk.
AB - BACKGROUND: A recent association study identified a common variant (rs9790517) at 4q24 to be associated with breast cancer risk. Independent association signals and potential functional variants in this locus have not been explored.METHODS: We conducted a fine-mapping analysis in 55,540 breast cancer cases and 51,168 controls from the Breast Cancer Association Consortium.RESULTS: Conditional analyses identified two independent association signals among women of European ancestry, represented by rs9790517 [conditional P = 2.51 × 10(-4); OR, 1.04; 95% confidence interval (CI), 1.02-1.07] and rs77928427 (P = 1.86 × 10(-4); OR, 1.04; 95% CI, 1.02-1.07). Functional annotation using data from the Encyclopedia of DNA Elements (ENCODE) project revealed two putative functional variants, rs62331150 and rs73838678 in linkage disequilibrium (LD) with rs9790517 (r(2) ≥ 0.90) residing in the active promoter or enhancer, respectively, of the nearest gene, TET2. Both variants are located in DNase I hypersensitivity and transcription factor-binding sites. Using data from both The Cancer Genome Atlas (TCGA) and Molecular Taxonomy of Breast Cancer International Consortium (METABRIC), we showed that rs62331150 was associated with level of expression of TET2 in breast normal and tumor tissue.CONCLUSION: Our study identified two independent association signals at 4q24 in relation to breast cancer risk and suggested that observed association in this locus may be mediated through the regulation of TET2.IMPACT: Fine-mapping study with large sample size warranted for identification of independent loci for breast cancer risk.
U2 - 10.1158/1055-9965.epi-15-0363
DO - 10.1158/1055-9965.epi-15-0363
M3 - Journal article
C2 - 26354892
SN - 1055-9965
VL - 24
SP - 1680
EP - 1691
JO - Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology
JF - Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology
IS - 11
ER -