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 employs RT-qPCR to quantitate ESR1, PGR, ERBB2, and MKi67 mRNAs from formalin-fixed, paraffin-embedded (FFPE) tissues facilitates analyses in less than 3 h. This study compares breast cancer biomarker analyses using an RT-qPCR-based platform with analyses using standard IHC and FISH for assessment of the same biomarkers. METHODS:FFPE tissue sections from 523 patients were sent to a College of American Pathologists-certified central reference laboratory to evaluate concordance between IHC/FISH and STRAT4 using the laboratory's standard of care methods. A subset of 155 FFPE specimens was tested for concordance with STRAT4 using different IHC antibodies and scoring methods. RESULTS:Concordance between STRAT4 and IHC was 97.8% for ESR1, 90.4% for PGR, 93.3% for ERBB2 (IHC/FISH for HER2), and 78.6% for MKi67. Receiver operating characteristic curve (ROC) area under the curve (AUC) values of 0.99, 0.95, 0.99, and 0.85 were generated for ESR1, PGR, ERBB2, and MKi67, respectively. Minor variabilities were observed depending on the IHC antibody comparator used. CONCLUSION:Evaluation of breast cancer biomarker status by STRAT4 was highly concordant with central IHC/FISH in this blinded, retrospectively analyzed collection of samples. STRAT4 may provide a means to cost-effectively generate standardized diagnostic results for breast cancer patients in low- and middle-income countries.
journal_name
Breast Cancer Res Treatjournal_title
Breast cancer research and treatmentauthors
Wu NC,Wong W,Ho KE,Chu VC,Rizo A,Davenport S,Kelly D,Makar R,Jassem J,Duchnowska R,Biernat W,Radecka B,Fujita T,Klein JL,Stonecypher M,Ohta S,Juhl H,Weidler JM,Bates M,Press MFdoi
10.1007/s10549-018-4889-5subject
Has Abstractpub_date
2018-11-01 00:00:00pages
327-338issue
2eissn
0167-6806issn
1573-7217pii
10.1007/s10549-018-4889-5journal_volume
172pub_type
杂志文章abstract:BACKGROUND:We recently showed PAM50 gene expression data can be represented by five quantitative, orthogonal, multi-gene breast tumor traits. These novel tumor 'dimensions' were superior to categorical intrinsic subtypes for clustering in high-risk breast cancer pedigrees, indicating potential to represent underlying g...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-018-05097-5
更新日期:2019-05-01 00:00:00
abstract::Epidemiological studies have evaluated the association between catechol-O-methyltransferase (COMT) Val108/158Met polymorphism and breast cancer risk. However, the results remain conflicting rather than conclusive. In order to derive a more precise estimation of the relationship, we performed this meta-analysis. System...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,meta分析
doi:10.1007/s10549-009-0650-4
更新日期:2010-06-01 00:00:00
abstract::Mammography and ultrasound are often used concurrently for patients with palpable breast masses. While mammography has a false-negative rate of approximately 15 %, the addition of breast ultrasound decreases this rate among patients with palpable breast masses. There are no recent outcome data regarding the use of com...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-015-3557-2
更新日期:2015-10-01 00:00:00
abstract:BACKGROUND:The phrase "high-risk for breast cancer" is used to identify various groups at elevated cancer risk, and the appropriate surveillance and risk-reducing strategies differ based on the etiology of risk. Here, we review the utility of patient-reported data to capture women with modifiable lifestyle risk factors...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-017-4115-x
更新日期:2017-04-01 00:00:00
abstract::Electron paramagnetic resonance (EPR) imaging is an emerging modality that can detect and localize paramagnetic molecular probes (so-called spin probes) in vivo. We previously demonstrated that nitroxide spin probes can be encapsulated in liposomes at concentrations exceeding 100 mM, at which nitroxides exhibit a conc...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-009-0715-4
更新日期:2010-11-01 00:00:00
abstract::Long-term estrogen deprivation treatment for breast cancer can, in some patients, lead to the activation of alternate cellular pathways, resulting in the re-emergence of the disease. This is a distressing scenario for oncologists and patients, but recent intensive molecular and biochemical studies are beginning to unr...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/s10549-007-9697-2
更新日期:2007-01-01 00:00:00
abstract:BACKGROUND:Several randomized controlled trials have confirmed the usefulness of trastuzumab as an adjuvant therapy for HER2-overexpressed breast cancer patients; however, the costs for 1-year treatment are high. Therefore, we performed an economic analysis regarding the efficient distribution of medical resources. ME...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-007-9679-4
更新日期:2008-06-01 00:00:00
abstract::Studies from Western countries have found evidence of a recent decline in breast cancer incidence rates in postmenopausal women, findings which have been hypothesized to reflect a reduced use of hormonal replacement therapy (HRT). We examined breast cancer incidence trends in Sweden between 1997 and 2007, a period cha...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-009-0615-7
更新日期:2010-06-01 00:00:00
abstract::We previously identified a positive transcriptional element identical to human Ha-ras response element (HRE) within the promoter of the rat Ha-ras gene. We further identified CArG binding factor A (CBF-A), a member of heterogeneous nuclear ribonuclear protein (hnRNP) gene family, as a trans-acting factor that binds th...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-004-1280-5
更新日期:2004-11-01 00:00:00
abstract::The mitochondrial DNA (mtDNA) 4977-bp deletion (DeltamtDNA(4977) mutation) is one of the most frequently observed mtDNA mutations in human tissues and may play a role in carcinogenesis. Only a few studies have evaluated DeltamtDNA(4977) mutation in breast cancer tissue, and the findings have been inconsistent, which m...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-007-9613-9
更新日期:2008-04-01 00:00:00
abstract::We conducted gene-based analysis in 26 genes in the FGFR signaling pathway to identify genes carrying genetic variation affecting risk of breast cancer and the specific estrogen receptor (ER) subtypes. Tagging single-nucleotide polymorphisms (SNPs) for each gene were selected and genotyped on a customized Illumina Exo...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-015-3672-0
更新日期:2016-01-01 00:00:00
abstract::Breast reduction is a common surgical procedure performed by plastic and oncoplastic breast surgeons. The authors report on the incidence and management of cancer and atypical hyperplasia in breast reduction specimens from one institution over a 10-year period. All patients who underwent breast reduction surgery at No...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1589-9
更新日期:2011-08-01 00:00:00
abstract::Angiosarcoma of the breast (AB) is a rare entity: its overall incidence is estimated at between 0.002% and 0.005% per year. Some potential risk factors have been described, mainly previous irradiation of the breast. We report the experience of the European Institute of Oncology with this unusual disease from January 1...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-006-9429-z
更新日期:2007-09-01 00:00:00
abstract::Addition of epirubicin to adjuvant chemotherapy can provide important benefits for patients with early breast cancer, but the optimal dose remains unclear. Further improvements can be achieved with dose-dense regimens, but densification of fluorouracil/epirubicin/cyclophosphamide (FEC) has proved difficult, with FEC(6...
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:2008-12-01 00:00:00
abstract:PURPOSE:Time to surgery (TTS) is a potentially modifiable factor associated with survival after breast cancer diagnosis and can serve as a proxy for quality of oncologic care coordination. We sought to determine whether factors associated with delays in TTS vary between patients who receive neoadjuvant systemic therapy...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-06012-7
更新日期:2020-11-18 00:00:00
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 t...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-017-4178-8
更新日期:2017-06-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/s10549-010-0741-2
更新日期:2010-04-01 00:00:00
abstract::Adjuvant therapy for hormone receptor (HR) positive postmenopausal breast cancer patients includes aromatase inhibitors (AI). While both the non-steroidal AI letrozole and the steroidal AI exemestane decrease serum estrogen concentrations, there is evidence that exemestane may be less detrimental to bone. We hypothesi...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-015-3608-8
更新日期:2015-11-01 00:00:00
abstract::Bone morphogenetic proteins (BMPs) regulate diverse cellular processes, such as proliferation, differentiation, and apoptosis. The BMPs have been studied in several cancers, but thus far contradictory results have been obtained and, especially in breast cancer, information on BMPs is still limited. We performed a syst...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-006-9362-1
更新日期:2007-06-01 00:00:00
abstract::The aromatase inhibitor 10-propargylestr-4-ene-3,17-dione (PED) has been evaluated in vivo as an anticancer agent. Prolonged administration of PED to rats bearing dimethylbenzanthracene-induced mammary tumors resulted in significant regression of hormone-responsive tumors within several days. Greater than 50% regressi...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF00682696
更新日期:1993-01-01 00:00:00
abstract::For Hispanic women, the Breast Cancer Risk Assessment Tool (BCRAT; "Gail Model") combines 1990-1996 breast cancer incidence for Hispanic women with relative risks for breast cancer risk factors from non-Hispanic white (NHW) women. BCRAT risk projections have never been comprehensively evaluated for Hispanic women. We ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1900-9
更新日期:2012-02-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1023/a:1006175504673
更新日期:1998-01-01 00:00:00
abstract::Findings from epidemiologic studies of oxidative stress biomarkers and breast cancer have been mixed, although no studies have focused on estrogen receptor-negative (ER-) tumors which may be more strongly associated with oxidative stress. We examined prediagnostic plasma fluorescent oxidation products (FlOP), a global...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-016-3861-5
更新日期:2016-07-01 00:00:00
abstract::In previous investigations of adolescent activity recalled in adulthood, modest reductions in risk of benign breast disease (BBD) and premenopausal breast cancer were seen with moderate-strenuous activity during high school. We therefore investigated physical activity, walking, and recreational inactivity (watching TV...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-014-3055-y
更新日期:2014-08-01 00:00:00
abstract::Tamoxifen has been used for the treatment of breast cancer since the 1970s, but is considered a carcinogen because it has been linked to liver cancer in rats and an increased risk of endometrial cancer in patients. In rats, DNA adducts appear to be responsible for carcinogenesis, but their contribution to carcinogenes...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1006311214152
更新日期:2000-03-01 00:00:00
abstract:PURPOSE:Mitochondrial unfolding protein are abundant in breast cancer cells, but the mechanism by which breast cancer cells resist apoptosis is still not fully elucidated. In this study, we explored the role of mitochondrial unfolded protein response (mtUPR)-related proteins in four types of breast cancer tissues. MET...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-05729-9
更新日期:2020-08-01 00:00:00
abstract::[3H]Tamoxifen Aziridine ([3H]TAZ) is a derivative of the antiestrogen tamoxifen that covalently labels the Estrogen Receptor (ER), and perhaps other uncharacterized proteins. In a previous article we described that [3H]TAZ binds to a cytosolic protein from human uterine tissues that shares some, but not all, the ER pr...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1006062510883
更新日期:1998-07-01 00:00:00
abstract:PURPOSE:Based on available phase III trial data, we performed a cost-effectiveness analysis of different treatment strategies that can be used in patients with newly diagnosed HER2-positive metastatic breast cancer (mBC). PATIENTS AND METHODS:We constructed a Markov model to assess the cost-effectiveness of four diffe...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-016-3978-6
更新日期:2016-11-01 00:00:00
abstract::Abnormal translation of mRNAs frequently occurring during carcinogenesis is among the mechanisms that can affect the expression of proteins involved in tumor development and progression. Eukaryotic initiation factor eIF4E is a key regulator of translation of many cancer-related transcripts and its expression is altere...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-013-2671-2
更新日期:2013-08-01 00:00:00
abstract:OBJECTIVES:Improvements in the life expectancy of women with breast cancer raise important questions how to improve quality of life (QoL) for women sustaining complications and side effects of cancer treatment. The presented study examined the prevalence of arm morbidity in a cohort of primary breast cancer patients ov...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-006-9247-3
更新日期:2006-12-01 00:00:00