Abstract
| Original language | English |
|---|---|
| Journal | Journal of Clinical Oncology |
| Volume | 26 |
| Issue number | 25 |
| Pages (from-to) | 4086-4091 |
| Number of pages | 5 |
| ISSN | 0732-183X |
| DOIs | |
| Publication status | Published - 1. Sep 2008 |
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Keywords
- Breast Neoplasms
- Cohort Studies
- Denmark
- Diseases in Twins
- Family Health
- Female
- Finland
- Genetic Predisposition to Disease
- Humans
- Incidence
- Odds Ratio
- Risk
- Sweden
- Time Factors
- Treatment Outcome
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Breast cancer onset in twins and women with bilateral disease. / Hartman, Mikael; Hall, Per; Edgren, Gustaf; Reilly, Marie; Lindstrom, Linda; Lichtenstein, Paul; Kaprio, Jaakko; Skytthe, Axel; Peto, Julian; Czene, Kamila.
In: Journal of Clinical Oncology, Vol. 26, No. 25, 01.09.2008, p. 4086-4091.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Breast cancer onset in twins and women with bilateral disease
AU - Hartman, Mikael
AU - Hall, Per
AU - Edgren, Gustaf
AU - Reilly, Marie
AU - Lindstrom, Linda
AU - Lichtenstein, Paul
AU - Kaprio, Jaakko
AU - Skytthe, Axel
AU - Peto, Julian
AU - Czene, Kamila
PY - 2008/9/1
Y1 - 2008/9/1
N2 - PURPOSE: Little is known of the onset of breast cancer in high-risk populations. We investigated the risk of breast cancer in twin sisters and in the contralateral breast taking family history into consideration. PATIENTS AND METHODS: We analyzed a Scandinavian population-based cohort of 2,499 female twin pairs, in which at least one had a diagnosis of breast cancer and estimated the risk of breast cancer in the sister. Using a total of 11 million individuals in Sweden with complete family links, we identified 93,448 women with breast cancer and estimated the risk of a bilateral breast cancer. RESULTS: The incidence of breast cancer in twin sisters of breast cancer patients was 0.64% per year and 0.42% per year in mono- and dizygotic twin sisters, respectively. In comparison, the risk of familial (affected first-degree relative) and nonfamilial bilateral breast cancer was 1.03% per year and 0.68% per year, respectively. Contrary to the risk of unilateral disease, the risk of cancer in the nonaffected twin and the opposite breast was not affected by age or time since first event. The relative risk of familial bilateral cancer was 52% higher (incidence rate ratio [IRR] = 1.52; 95% CI, 1.42 to 1.64) and the relative risk in the dizygotic twin sister was 25% lower (IRR = 0.75; 95% CI, 0.61 to 0.91) compared with the risk of nonfamilial bilateral cancer. CONCLUSION: The elevated risk of breast cancer in high-risk groups is little affected by age and time since diagnosis. Our findings suggest that susceptible groups of women might have already aggregated genetic prerequisites for breast cancer.
AB - PURPOSE: Little is known of the onset of breast cancer in high-risk populations. We investigated the risk of breast cancer in twin sisters and in the contralateral breast taking family history into consideration. PATIENTS AND METHODS: We analyzed a Scandinavian population-based cohort of 2,499 female twin pairs, in which at least one had a diagnosis of breast cancer and estimated the risk of breast cancer in the sister. Using a total of 11 million individuals in Sweden with complete family links, we identified 93,448 women with breast cancer and estimated the risk of a bilateral breast cancer. RESULTS: The incidence of breast cancer in twin sisters of breast cancer patients was 0.64% per year and 0.42% per year in mono- and dizygotic twin sisters, respectively. In comparison, the risk of familial (affected first-degree relative) and nonfamilial bilateral breast cancer was 1.03% per year and 0.68% per year, respectively. Contrary to the risk of unilateral disease, the risk of cancer in the nonaffected twin and the opposite breast was not affected by age or time since first event. The relative risk of familial bilateral cancer was 52% higher (incidence rate ratio [IRR] = 1.52; 95% CI, 1.42 to 1.64) and the relative risk in the dizygotic twin sister was 25% lower (IRR = 0.75; 95% CI, 0.61 to 0.91) compared with the risk of nonfamilial bilateral cancer. CONCLUSION: The elevated risk of breast cancer in high-risk groups is little affected by age and time since diagnosis. Our findings suggest that susceptible groups of women might have already aggregated genetic prerequisites for breast cancer.
KW - Breast Neoplasms
KW - Cohort Studies
KW - Denmark
KW - Diseases in Twins
KW - Family Health
KW - Female
KW - Finland
KW - Genetic Predisposition to Disease
KW - Humans
KW - Incidence
KW - Odds Ratio
KW - Risk
KW - Sweden
KW - Time Factors
KW - Treatment Outcome
U2 - 10.1200/JCO.2007.14.3198
DO - 10.1200/JCO.2007.14.3198
M3 - Journal article
VL - 26
SP - 4086
EP - 4091
JO - Journal of Clinical Oncology
JF - Journal of Clinical Oncology
SN - 0732-183X
IS - 25
ER -