Abstract:
INTRODUCTION:Classification of breast cancers according to the HER-2 oncogene status is of central importance in the selection of post-surgical therapies. A decrease in the proportion of HER-2-positive breast cancer has been suspected, but no data on the incidence trends at population level have been reported. METHODS:We studied the proportion of HER-2-positive breast cancers by chromogenic in situ hybridization (CISH) in three cohorts (years 1982 to 1986 (n = 310), 1989 to 1992 (n = 108), and 2004 to 2005 (n = 713)) in the population of the Pirkanmaa hospital district (approximately 220,000 women). Cancer incidence rates were age-adjusted to the world standard population. RESULTS:The proportion of HER-2-positive breast cancer declined from 21.6% (average in 1982 to 1986) to 13.6% (average in 2004 to 2005). However, during the same time period the age-adjusted incidence of all invasive breast cancers had increased by 40%. These opposite trends balanced each other and indicated that the incidence of HER-2-positive breast cancer has remained unchanged (Poisson regression coefficient for time trend 1.000; 95% CI = 0.989 to 1.012). In contrast, the incidence of HER-2-negative cancer showed 2% annual increase (Poisson regression coefficient 1.021, 95% CI = 1.016 to 1.026). Although HER-2-negative cancers were more likely to be diagnosed by mammography screening, the changes were more likely to be explained by etiological risk factors favoring HER-2-negative (and hormone receptor-positive) disease such as menopausal hormone therapy. CONCLUSIONS:These results document a significant decrease in the proportion of HER-2-positive breast cancer. However, the incidence of HER-2-positive cancer at the population level was found to be unchanged.
journal_name
Breast Cancer Resjournal_title
Breast cancer research : BCRauthors
Köninki K,Tanner M,Auvinen A,Isola Jdoi
10.1186/bcr2322subject
Has Abstractpub_date
2009-01-01 00:00:00pages
R37issue
3eissn
1465-5411issn
1465-542Xpii
bcr2322journal_volume
11pub_type
杂志文章abstract::Proteins belonging to the profilin family of actin-binding proteins are considered to be important control elements for actin polymerization and have been linked to a broad spectrum of cellular functions, including cell migration. An intriguing paper recently published in Cancer Cell unveils differential effects of pr...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
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journal_title:Breast cancer research : BCR
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pub_type: 杂志文章,多中心研究
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journal_title:Breast cancer research : BCR
pub_type: 社论,评审
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journal_title:Breast cancer research : BCR
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2006-01-01 00:00:00
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journal_title:Breast cancer research : BCR
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Breast cancer research : BCR
pub_type: 评论,社论
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更新日期:2011-10-12 00:00:00
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journal_title:Breast cancer research : BCR
pub_type: 杂志文章
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journal_title:Breast cancer research : BCR
pub_type: 评论,社论
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更新日期:2008-01-01 00:00:00
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journal_title:Breast cancer research : BCR
pub_type: 杂志文章
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pub_type: 社论
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pub_type: 杂志文章,评审
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