Abstract:
INTRODUCTION:Mammographic density is one of the strongest risk factors for breast cancer and is believed to represent epithelial and stromal proliferation. Because of the high heritability of breast density, and the role of the insulin-like growth factor (IGF) pathway in cellular proliferation and breast development, we examined the association between common genetic variation in this pathway and mammographic density. METHODS:We conducted a cross-sectional analysis among controls (n = 1,121) who were between the ages of 42 and 78 years at mammography, from a breast cancer case-control study nested within the Nurses' Health Study cohort. At the time of mammography, 204 women were premenopausal and 917 were postmenopausal. We genotyped 29 haplotype-tagging SNPs demonstrated to capture common genetic variation in IGF1, IGF binding protein (IGFBP)-1, and IGFBP-3. RESULTS:Common haplotype patterns in three of the four haplotype blocks spanning the gene encoding IGF1 were associated with mammographic density. Haplotype patterns in block 1 (p = 0.03), block 3 (p = 0.009), and block 4 (p = 0.007) were associated with mammographic density, whereas those in block 2 were not. None of the common haplotypes in the three haplotype blocks spanning the genes encoding IGFBP-1/IGFBP-3 were significantly associated with mammographic density. Two haplotype-tagging SNPs in IGF1, rs1520220 and rs2946834, showed a strong association with mammographic density. Those with the homozygous variant genotype for rs1520220 had a mean percentage mammographic density of 19.6% compared with those with the homozygous wild-type genotype, who had a mean percentage mammographic density of 27.9% (p for trend < 0.0001). Those that were homozygous variant for rs2946834 had a mean percentage mammographic density of 23.2% compared with those who were homozygous wild-type with a mean percentage mammographic density of 28.2% (p for trend = 0.0004). Permutation testing demonstrated that results as strong as these are unlikely to occur by chance (p = 0.0005). CONCLUSION:Common genetic variation in IGF1 is strongly associated with percentage mammographic density.
journal_name
Breast Cancer Resjournal_title
Breast cancer research : BCRauthors
Tamimi RM,Cox DG,Kraft P,Pollak MN,Haiman CA,Cheng I,Freedman ML,Hankinson SE,Hunter DJ,Colditz GAdoi
10.1186/bcr1655subject
Has Abstractpub_date
2007-01-01 00:00:00pages
R18issue
1eissn
1465-5411issn
1465-542Xpii
bcr1655journal_volume
9pub_type
杂志文章abstract::The Breast Cancer Site Group (BCSG) of the National Cancer Institute of Canada (NCIC) Clinical Trials Group (CTG) has conducted a wide variety of clinical trials focussing on large phase III trials of adjuvant chemotherapy, adjuvant hormonal therapy, and optimal delivery of adjuvant radiation therapy. The Group has al...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/bcr979
更新日期:2005-01-01 00:00:00
abstract:BACKGROUND:The contribution of BRCA1 and BRCA2 to the incidence of male breast cancer (MBC) in the United Kingdom is not known, and the importance of these genes in the increased risk of female breast cancer associated with a family history of breast cancer in a male first-degree relative is unclear. METHODS:We have c...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/bcr419
更新日期:2002-01-01 00:00:00
abstract:INTRODUCTION:Breast tumor kinase (Brk/protein tyrosine kinase 6 (PTK6)) is a nonreceptor, soluble tyrosine kinase overexpressed in the majority of breast tumors. Previous work has placed Brk downstream of epidermal growth factor receptor (ErbB) activation and upstream of extracellular signal-regulated kinase 5 (ERK5) a...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/bcr2622
更新日期:2010-01-01 00:00:00
abstract:BACKGROUND:We have previously shown that galactosylceramide (GalCer) affects the tumourigenic and metastatic properties of breast cancer cells by acting as an anti-apoptotic molecule. Since GalCer is a precursor molecule in the synthesis of sulfatides, the present study was aimed to define the role of sulfatides in apo...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/s13058-018-1058-z
更新日期:2018-11-06 00:00:00
abstract:INTRODUCTION:Protein tyrosine kinase 6 (PTK6) is a non-receptor tyrosine kinase that is highly expressed in Human Epidermal Growth Factor 2(+) (Her2(+)) breast cancers. Overexpression of PTK6 enhances anchorage-independent survival, proliferation, and migration of breast cancer cells. We hypothesized that PTK6 inhibiti...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/s13058-015-0594-z
更新日期:2015-06-19 00:00:00
abstract:BACKGROUND:Texture patterns have been shown to improve breast cancer risk segregation in addition to area-based mammographic density. The additional value of texture pattern scores on top of volumetric mammographic density measures in a large screening cohort has never been studied. METHODS:Volumetric mammographic den...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/s13058-018-0961-7
更新日期:2018-05-02 00:00:00
abstract:INTRODUCTION:Mammographic density has been established as a strong risk factor for breast cancer, primarily using digitized film mammograms. Full-field digital mammography (FFDM) is replacing film mammography, has different properties than film, and provides both raw and processed clinical display representation images...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/bcr3372
更新日期:2013-01-04 00:00:00
abstract::Epigenetic changes are critical for development and progression of cancers, including breast cancer. Significant progress has been made in the basic understanding of how various epigenetic changes such as DNA methylation, histone modification, miRNA expression, and higher order chromatin structure affect gene expressi...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章,评审
doi:10.1186/bcr2925
更新日期:2011-01-01 00:00:00
abstract::The mammary gland develops as an appendage of the ectoderm. The prenatal stage of mammary development is hormone independent and is regulated by sequential and reciprocal signaling between the epithelium and the mesenchyme. A number of recent studies using human and mouse genetics, in particular targeted gene deletion...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章,评审
doi:10.1186/bcr776
更新日期:2004-01-01 00:00:00
abstract:BACKGROUND:Recent genome-wide profiling by sequencing and distinctive chromatin signatures has identified thousands of long non-coding RNA (lncRNA) species (>200 nt). LncRNAs have emerged as important regulators of gene expression, involving in both developmental and pathological processes. While altered expression of ...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/s13058-017-0853-2
更新日期:2017-05-30 00:00:00
abstract:INTRODUCTION:Tumor cells can effectively be killed by heat, e.g. by using magnetic hyperthermia. The main challenge in the field, however, is the generation of therapeutic temperatures selectively in the whole tumor region. We aimed to improve magnetic hyperthermia of breast cancer by using innovative nanoparticles whi...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/s13058-015-0576-1
更新日期:2015-05-13 00:00:00
abstract:BACKGROUND:Breast cancer is a highly heterogeneous disease characterized by multiple histologic and molecular subtypes. While a myriad of breast cancer cell lines have been developed over the past 60 years, estrogen receptor alpha (ER)+ disease and some mutations associated with this subtype remain underrepresented. He...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/s13058-020-01300-y
更新日期:2020-06-23 00:00:00
abstract::Breast cancer arises from multiple genetic events that together contribute to the established, irreversible malignant phenotype. The development of inducible tissue-specific transgenics has allowed a careful dissection of the events required for induction and subsequent maintenance of tumorigenesis. Mammary gland targ...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/bcr297
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:An increasing number of women are evaluated for potential breast cancer and may experience mental distress during evaluation. We aim to assess the risks of psychiatric disorders and cardiovascular diseases during the diagnostic workup of potential breast cancer. METHODS:All women with a new diagnosis of uns...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/s13058-019-1232-y
更新日期:2019-12-10 00:00:00
abstract:INTRODUCTION:Before any new methodology can be introduced into the routine diagnostic setting it must be technically validated against the established standards. To this end, a ring study involving five international pathology laboratories was initiated to validate chromogenic in situ hybridisation (CISH) against fluor...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章,多中心研究
doi:10.1186/bcr1776
更新日期:2007-01-01 00:00:00
abstract::Over the past 8 years there has been a wealth of breast cancer gene expression studies. The majority of these studies have focused upon characterising a tumour at presentation, before treatment, rather than looking at the effects of treatment on the tumour. More recently, a number of groups have moved from predicting ...
journal_title:Breast cancer research : BCR
pub_type: 评论,社论
doi:10.1186/bcr2196
更新日期:2008-01-01 00:00:00
abstract:INTRODUCTION:The re-emergence of the tumour growth factor-beta (TGF-beta)-related embryonic morphogen Nodal has recently been reported in several different human cancers. In this study, we examined the expression of Nodal in a series of benign and malignant human breast tissues to determine the clinical significance of...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/bcr3185
更新日期:2012-05-11 00:00:00
abstract:INTRODUCTION:Obesity has been linked to increased risk of breast cancer in postmenopausal women. Increased peripheral production of estrogens has been regarded as the main cause for this association, but other features of increased body fat mass may also play a part. Leptin is a protein produced mainly by adipose tissu...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/bcr1603
更新日期:2006-01-01 00:00:00
abstract::Array-based comparative genomic hybridization, RNA expression profiling, and proteomic analyses are new molecular technologies used to study breast cancer. Invasive breast cancers were originally evaluated because they provided ample quantities of DNA, RNA, and protein. The application of these technologies to pre-inv...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章,评审
doi:10.1186/bcr655
更新日期:2003-01-01 00:00:00
abstract::For the past 20 years the mouse has served as a workhorse for studying the molecular underpinnings of human breast cancer. While some genetically engineered mouse mammary tumor models do not accurately recapitulate human disease (that is, the MMTV-Neu model and HER2-overexpressing human cancers), additional tumor mode...
journal_title:Breast cancer research : BCR
pub_type: 评论,社论
doi:10.1186/bcr2569
更新日期:2010-01-01 00:00:00
abstract::Two articles previously published in Breast Cancer Research illustrate the high rates of breast cancer in Marin County, a wealthy, urban county immediately northwest of the city of San Francisco. I herein comment on these articles, and on the political/psychological/scientific dilemma presented by regions with high ca...
journal_title:Breast cancer research : BCR
pub_type: 评论,杂志文章,评审
doi:10.1186/bcr633
更新日期:2003-01-01 00:00:00
abstract::Accumulating evidence suggests that many cancers, including BRCA1- and BRCA2-associated breast cancers, are deficient in DNA repair processes. Both hereditary and sporadic breast cancers have been found to have significant downregulation of repair factors. This has provided opportunities to exploit DNA repair deficien...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章,评审
doi:10.1186/bcr2566
更新日期:2010-01-01 00:00:00
abstract:INTRODUCTION:The ataxia telangiectasia mutated (ATM) gene is a tumor suppressor gene with functions in cell cycle arrest, apoptosis, and repair of DNA double-strand breaks. Based on family studies, women heterozygous for mutations in the ATM gene are reported to have a fourfold to fivefold increased risk of breast canc...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/bcr809
更新日期:2004-01-01 00:00:00
abstract:INTRODUCTION:The aim of this study was to develop and validate a prognostication model to predict overall and breast cancer specific survival for women treated for early breast cancer in the UK. METHODS:Using the Eastern Cancer Registration and Information Centre (ECRIC) dataset, information was collated for 5,694 wom...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/bcr2464
更新日期:2010-01-01 00:00:00
abstract::Hypoxia-inducible factor-1 (HIF), which is centrally involved in physiological oxygen homeostasis, is also activated in the majority of tumours. Activation of HIF can occur through genetic mechanisms or as a result of hypoxia within the tumour microenvironment. In some cases HIF activation appears to be intimately lin...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章,评审
doi:10.1186/bcr313
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:In over 20% of breast conserving operations, postoperative pathological assessment of the excised tissue reveals positive margins, requiring additional surgery. Current techniques for intra-operative assessment of tumor margins are insufficient in accuracy or resolution to reliably detect small tumors. There...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/s13058-018-1002-2
更新日期:2018-07-09 00:00:00
abstract:INTRODUCTION:Breast carcinoma is the most common cancer in women, but its incidence is not increased in Lynch syndrome (LS) and studies on DNA mismatch repair deficiency (MMR) in LS-associated breast cancers have arrived at conflicting results. This study aimed to settle the question as to whether breast carcinoma belo...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/bcr3205
更新日期:2012-06-12 00:00:00
abstract:BACKGROUND:Early life exposures, including diet, have been implicated in the etiology of breast cancer. METHODS:A nested case-control study was conducted among participants in the Nurses' Health Study who completed a 24-item questionnaire about diet during high school. There were 843 eligible cases diagnosed between o...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/bcr583
更新日期:2003-01-01 00:00:00
abstract::Therapeutic choices for metastatic tumors are, in most cases, based upon the histological and molecular analysis of the corresponding primary tumor. Understanding whether and to what extent the genomic landscape of metastasis differs from the tumors from which they originated is critical yet largely unknown. A recent ...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章
doi:10.1186/bcr2469
更新日期:2010-01-01 00:00:00
abstract::The concept of 'targeted' therapies implies that such drugs only act on cells that specifically express the particular target, therefore giving rise to a low incidence of side effects. However, targeted therapies currently approved for the treatment of breast cancer have demonstrated a relatively high incidence of car...
journal_title:Breast cancer research : BCR
pub_type: 杂志文章,评审
doi:10.1186/bcr3142
更新日期:2012-06-19 00:00:00