Abstract:
PURPOSE:Tobacco smoking is a risk factor in several cancers, yet its roles as a putative etiologic exposure or poor prognostic factor in breast cancer are less clear. Altered DNA methylation contributes to breast cancer development and may provide a mechanistic link between smoking and gene expression changes leading to cancer development or progression. METHODS:Using a cancer-focused array, we examined methylation at 933 CpGs in 517 invasive breast tumors in the Carolina Breast Cancer Study to determine whether methylation patterns differ by exposure to tobacco smoke. Multivariable generalized linear regression models were used to compare tumor methylation profiles between smokers and never smokers, overall, or stratified on hormone receptor (HR) status. RESULTS:Modest differences in CpG methylation were detected at p < 0.05 in breast tumors from current or ever smokers compared with never smokers. In stratified analyses, HR- tumors from smokers exhibited primarily hypomethylation compared with tumors from never smokers; hypomethylation was similarly detected within the more homogeneous basal-like subtype. Most current smoking-associated CpG loci exhibited methylation levels in former smokers that were intermediate between those in current and never smokers and exhibited progressive changes in methylation with increasing duration of smoking. Among former smokers, restoration of methylation toward baseline (never smoking) levels was observed with increasing time since quitting. Moreover, smoking-related hypermethylation was stronger in HR+ breast tumors from blacks than in whites. CONCLUSIONS:Our results suggest that breast tumor methylation patterns differ with tobacco smoke exposure; however, additional studies are needed to confirm these findings.
journal_name
Breast Cancer Res Treatjournal_title
Breast cancer research and treatmentauthors
Conway K,Edmiston SN,Parrish E,Bryant C,Tse CK,Swift-Scanlan T,McCullough LE,Kuan PFdoi
10.1007/s10549-017-4178-8subject
Has Abstractpub_date
2017-06-01 00:00:00pages
349-361issue
2eissn
0167-6806issn
1573-7217pii
10.1007/s10549-017-4178-8journal_volume
163pub_type
杂志文章abstract:PURPOSE:Breast cancer is the most common cancer and leading cause of cancer death in women. Body composition parameters, especially those related to muscle, have become a growing focus of cancer research. In this review, we summarize the literature on breast cancer and muscle parameters as well as combine their outcome...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,meta分析
doi:10.1007/s10549-019-05352-3
更新日期:2019-10-01 00:00:00
abstract::The records of 231 patients with primary breast cancer and 85 patients with metastatic breast cancer were reviewed to determine whether indices of body weight were associated with prognosis. Results support previous reports that indices of body weight are relatively weak, but real, prognostic factors. ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01807654
更新日期:1985-01-01 00:00:00
abstract::Knowledge about long-term consequences of breast cancer treatment on shoulder and arm function and volume in stages I-II breast cancer survivors is limited. The effects of shoulder-arm function shortly after surgery on long-term function are unknown. One hundred and ninety-four women were examined pre-surgery (T0) and...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-013-2509-y
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01806510
更新日期:1996-01-01 00:00:00
abstract::Monitoring effective antiestrogenic activity of the triphenylethylenes in patients with breast cancer is usually determined by the duration of response. The pharmacokinetics of toremifene and tamoxifen have been shown to be highly variable but patient specific. In the present study, we developed a method to accurately...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01832356
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journal_title:Breast cancer research and treatment
pub_type: 历史文章,杂志文章
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更新日期:2008-09-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-05864-3
更新日期:2020-11-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01805867
更新日期:1981-01-01 00:00:00
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journal_title:Breast cancer research and treatment
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更新日期:2014-01-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章
doi:10.1023/a:1011945623464
更新日期:2001-07-01 00:00:00
abstract::Elevated body weight is a risk factor for postmenopausal breast cancer and is associated with increased incidence of spontaneous and chemically induced mammary tumors (MTs) in rodents. In this study, genetically obese Lep(ob)Lep(ob) female mice that overexpress human TGF-alpha (transforming growth factor-alpha) were u...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1021891825399
更新日期:2003-02-01 00:00:00
abstract:PURPOSE:The methods (IHC/FISH) typically used to assess ER, PR, HER2, and Ki67 in FFPE specimens from breast cancer patients are difficult to set up, perform, and standardize for use in low and middle-income countries. Use of an automated diagnostic platform (GeneXpert®) and assay (Xpert® Breast Cancer STRAT4) that emp...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-018-4889-5
更新日期:2018-11-01 00:00:00
abstract::The tumor-stroma ratio has previously been shown to be prognostic for patients with invasive breast cancer. We present a validation study to assess the prognostic significance in lymph node-negative, premenopausal patients from the perioperative chemotherapy trial (POP trial, 10854) conducted by the European Organizat...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-013-2571-5
更新日期:2013-06-01 00:00:00
abstract::The purpose of the present study was to characterize primitive epithelial progenitor populations present in adult normal human mammary tissue using a combination of flow cytometry and in vitro colony assay procedures. Three types of human breast epithelial cell (HBEC) progenitors were identified: luminal-restricted, m...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1010615124301
更新日期:2001-05-01 00:00:00
abstract::To investigate the expression levels of CXCL10 and CXCR3 in tumors from breast cancer patients randomized to adjuvant tamoxifen treatment or no endocrine treatment, in order to further study the connection to prognosis and prediction of tamoxifen treatment outcome. Immunohistochemistry on tissue microarrays from 912 b...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,随机对照试验
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更新日期:2014-05-01 00:00:00
abstract::Circulating CA 15-3 antigen levels were evaluated in patients with benign diseases and breast cancer patients with no clinical evidence of disease after surgery (NED). Patients with breast cancer NED were followed for tumor recurrence or death during a median of 12.9 months (range 1 to 25 months). CA 15-3 and carcinoe...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01806524
更新日期:1989-03-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-008-0153-8
更新日期:2009-07-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
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更新日期:2018-01-01 00:00:00
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journal_title:Breast cancer research and treatment
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更新日期:2003-05-01 00:00:00
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journal_title:Breast cancer research and treatment
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更新日期:2013-04-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01807157
更新日期:1996-01-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-009-0594-8
更新日期:2010-08-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
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更新日期:2019-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2015-02-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
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更新日期:1996-01-01 00:00:00
abstract:PURPOSE:Results from four major hypofractionated whole-breast radiotherapy (HF-WBRT) trials have demonstrated equivalence in select patients with early-stage breast cancer when compared with conventionally fractionated WBRT (CF-WBRT). Because relatively little data were available on patients receiving neoadjuvant or ad...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-017-4345-y
更新日期:2017-09-01 00:00:00