ArticleBreast cancer (Tokyo, Japan)1996
Family History of Breast Cancer and Breast Cancer Risk in Japan.
Article in Breast cancer (Tokyo, Japan), 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
4 authors.
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Abstract
We studied 132 families with a family history of breast cancer (familial aggregation cases, FA cases) to assess the breast cancer risk presented by such a family history. For comparison with these FA cases, we randomly selected 132 control families of sporadic cases (SP controls) by adjusting for the age of the proband at surgery. Information on family history was collected for all first-degree female relatives and maternal and paternal grandmothers. Japanese women with a first-degree relative affected by breast cancer were found to have an increased risk of the disease. The odds ratio (OR) for women with a family history of breast cancer was 1.99 (95% confidence interval [ CI ], 1.48-2.66). The OR for FA-case doughters of women with breast cancer was 1.54 (95% CI, 0.91-2.63). A higher risk was not observed if a woman's mother had breast cancer. If the proband had a sister with breast cancer, a slightly increased risk of other cancers of the proband was observed (OR, 1.85 [ 0.87-3.92]). These results suggest that a family history of breast cancer in Japanese women may affect their risk of developing cancer of the breast and other organs.
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Registered trials
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