Does a family history of BC increase the risk of certain subtypes?

Posted: September 14, 2010

Study:	Family history of breast cancer in first-degree relatives and triple-negative breast cancer risk Cite Phipps AI, Buist DSM, Malone KE, Barlow WE, Porter PL, Kerlikowske K, et al. Family history of breast cancer in first-degree relatives and triple-negative breast cancer risk. Breast Cancer Research and Treatment. Springer Science and Business Media LLC; 2010; 126:671-678 10.1007/s10549-010-1148-9
Publication:	Breast Cancer Research and Treatment, September 2010

Study:

Family history of breast cancer in first-degree relatives and triple-negative breast cancer risk Cite

Phipps AI, Buist DSM, Malone KE, Barlow WE, Porter PL, Kerlikowske K, et al. Family history of breast cancer in first-degree relatives and triple-negative breast cancer risk. Breast Cancer Research and Treatment. Springer Science and Business Media LLC; 2010; 126:671-678 10.1007/s10549-010-1148-9

Publication:

Breast Cancer Research and Treatment, September 2010

Family history leads to different disease profile

A new study has reported that women with a first degree relative with breast cancer have a 73% higher risk of triple negative (ER-/PR-/HER2-) breast cancer than women generally. However, such women also have a 62% higher risk of ER+ breast cancer and a 56% higher risk of ER-/PR-/HER2+ breast cancer.

Triple negative breast cancer accounts for fewer than 20% of breast cancers overall, but it is the predominant subtype among BRCA1 mutation carriers. However, few studies have examined the association between family history of breast cancer and risk of triple negative breast cancer.

The authors examined data from 2,599,946 mammograms on 1,054,466 women aged 40 to 84 years collected by the Breast Cancer Surveillance Consortium. Fifteen percent of these women reported a first degree (mother, sister or daughter) family history of breast cancer.

Study results

A total of 705 women were found to have triple negative disease, 10,026 had ER+ disease, and 308 had ER-/PR-/HER2+ breast cancer. First degree family history was found to similarly increase the risk of all three subtypes. Risk was highest among women with at least two first degree relatives with breast cancer.

Compared to women with no affected first degree relatives, those with at least two affected first degree relatives had 2.66 times the risk of triple negative breast cancer, 2.05 times the risk of ER+ breast cancer, and 2.25 times the risk of ER-/PR-/HER2+ breast cancer.

Selected breast cancer studies

Physical activity and the risk of breast cancer in BRCA1/2 mutation carriers in the Netherlands. Cite
Pijpe A, Manders P, van Leeuwen F, Rookus M. Physical activity and the risk of breast cancer in BRCA1/2 mutation carriers in the Netherlands.. Poster Discussion Abstracts. American Association for Cancer Research; 2009; 10.1158/0008-5472.sabcs-505
Phenocopies in BRCA1 and BRCA2 families: evidence for modifier genes and implications for screening Cite
Smith A, Moran A, Boyd MC, Bulman M, Shenton A, Smith L, et al. Phenocopies in BRCA1 and BRCA2 families: evidence for modifier genes and implications for screening. Journal of Medical Genetics. BMJ; 2006; 44:10-15 10.1136/jmg.2006.043091
Some characteristics of familial breast cancer Cite
Anderson DE. Some characteristics of familial breast cancer. Cancer. Wiley; 1971; 28:1500-1504 10.1002/1097-0142(197112)28:6<1500::aid-cncr2820280623>3.0.co;2-d
Breast and Ovarian Cancer in Relatives of Cancer Patients, with and without BRCA Mutations Cite
Lee JS, John EM, McGuire V, Felberg A, Ostrow KL, DiCioccio RA, et al. Breast and Ovarian Cancer in Relatives of Cancer Patients, with and without BRCA Mutations. Cancer Epidemiology Biomarkers & Prevention. American Association for Cancer Research (AACR); 2006; 15:359-363 10.1158/1055-9965.epi-05-0687

Study results

Selected breast cancer studies

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