Abstract:
BACKGROUND:Triple-negative breast cancer (TNBC) is an aggressive disease without established targeted treatment options for patients with metastatic disease. This study was undertaken to evaluate potentially actionable biomarkers in a large cohort of TNBC and compare them with non-TNBCs. MATERIALS AND METHODS:We evaluated 6341 (2111 TNBC and 4230 non-TNBC) breast cancer samples at a central laboratory for biomarkers of potential drug response across multiple platforms, including gene sequencing, protein expression, and gene copy number. RESULTS:TNBC expresses androgen receptor (AR) in a significantly (P < .05) lower percentage of cases (17%) than hormone receptor (HR)-positive and human epidermal growth factor receptor 2 (HER2)-positive breast carcinomas (59% and 79%, respectively), and gene comutations were differentially associated with AR-positive versus AR-negative cases. Higher AR expression levels in TNBC predicted for lower Ki-67 levels. Seventy percent of TNBC harbored a phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit alpha (PIK3CA), v-akt murine thymoma viral oncogene homolog 1 (AKT1), or phosophatase and tensin homolog (PTEN) aberration. TNBC patients had a significantly lower PIK3CA mutation rate (13%) than all other subtypes (P < .05) and a higher tumor protein p53 (TP53) mutation rate (64%) than the estrogen receptor (ER)-positive cases (approximately 30%; P < .05). Topoisomerase 2 (TOP2A) amplification was observed in 1.3% of TNBC and in 1.6% of HER2-negative, HR-positive cancers; in contrast, HER2-positive, HR-negative or HR-positive cancers exhibited TOP2A amplification in 19% and 40% of cases, respectively (P <.05). CONCLUSION:Multi-platform molecular profiling identifies subgroups of TNBC with different biomarker profiles, suggesting numerous potentially targetable alterations in TNBC. TNBC is further characterized by different gene mutations and proliferative activity relative to AR expression, highlighting a need for comprehensive pathologic examination with potential to develop different, individualized treatment options.
journal_name
Clin Breast Cancerjournal_title
Clinical breast cancerauthors
Millis SZ,Gatalica Z,Winkler J,Vranic S,Kimbrough J,Reddy S,O'Shaughnessy JAdoi
10.1016/j.clbc.2015.04.008subject
Has Abstractpub_date
2015-12-01 00:00:00pages
473-481.e3issue
6eissn
1526-8209issn
1938-0666pii
S1526-8209(15)00098-1journal_volume
15pub_type
杂志文章abstract:INTRODUCTION:The purpose of this study was to evaluate the added value of breast magnetic resonance imaging (MRI) in preoperative diagnosis of ductal carcinoma in situ (DCIS). We reviewed our institution database of 3499 consecutive patients treated for breast cancer. PATIENTS AND METHODS:A total of 362 patients with ...
journal_title:Clinical breast cancer
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doi:10.1016/j.clbc.2016.12.007
更新日期:2017-06-01 00:00:00
abstract::During the past decade, improvements in treatment-planning tools, computer and imaging technologies, and new therapeutic modalities have allowed radiation to be delivered in a conformal fashion while minimizing treatment toxicity. It is important that physicians involved in breast cancer treatment recognize the numero...
journal_title:Clinical breast cancer
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abstract:BACKGROUND:Ovarian suppression from chemotherapy results in bone loss in premenopausal women with breast cancer (BC). Less is known about bone microarchitecture changes. We used high-resolution peripheral quantitative computed tomography (HR-pQCT) to measure volumetric bone density and trabecular and cortical microarch...
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doi:10.1016/j.clbc.2019.12.001
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abstract:PURPOSE:Limited outcomes exist in patients who develop an ipsilateral breast tumor recurrence (IBTR) after accelerated partial breast irradiation (APBI). The purpose of this study was to evaluate these outcomes and patterns of failure in our cohort of patients undergoing APBI. METHODS AND MATERIALS:A total of 534 pati...
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doi:10.1016/j.clbc.2012.09.006
更新日期:2012-12-01 00:00:00
abstract::Intravenous bisphosphonates are the preferred treatment to prevent skeletal complications for patients with breast cancer and bone metastases. Pamidronate, a single-nitrogen bisphosphonate, was the early standard of care for such patients based on 2 large, placebo-controlled trials involving 754 patients. Zoledronic a...
journal_title:Clinical breast cancer
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abstract:UNLABELLED:The current study examined the impact of re-excision and residual disease on local recurrence after breast conservation treatment for patients with negative margins. Patients with residual disease on re-excision had a higher local recurrence rate than other patients. However, with reasonably low local recurr...
journal_title:Clinical breast cancer
pub_type: 杂志文章
doi:10.1016/j.clbc.2011.08.003
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abstract::Mucin-1 (MUC-1) is a high-molecular-weight glycoprotein rich in serine and threonine residues that are O-glycosylated. Expression of MUC-1 is increased in breast, ovarian, and other adenocarcinomas, and altered glycosylation results in exposure of novel peptide epitopes and the expression of tumor-associated carbohydr...
journal_title:Clinical breast cancer
pub_type: 杂志文章,评审
doi:10.3816/cbc.2003.s.002
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abstract::Breast-conserving therapy (BCT) consists of segmental mastectomy followed by postoperative radiation therapy (RT) to the whole breast. At least 6 prospective randomized trials have proven the equivalence of BCT to mastectomy. However, BCT remains underused and, most importantly, a sizable proportion of patients with i...
journal_title:Clinical breast cancer
pub_type: 杂志文章,评审
doi:10.3816/cbc.2003.n.030
更新日期:2003-10-01 00:00:00
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journal_title:Clinical breast cancer
pub_type: 杂志文章,评审
doi:10.1016/j.clbc.2012.09.017
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journal_title:Clinical breast cancer
pub_type: 杂志文章,评审
doi:10.3816/cbc.2001.s.003
更新日期:2001-10-01 00:00:00
abstract::This article discusses the rationale for 2 methods of making estimates of the benefit of letrozole as extended adjuvant hormonal therapy after 5 years of tamoxifen. It uses information from the Overview metaanalyses to develop general rules for making estimates of remaining risk of relapse for women completing 5 years...
journal_title:Clinical breast cancer
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doi:10.3816/cbc.2004.n.047
更新日期:2004-10-01 00:00:00
abstract:BACKGROUND:We studied the extent of BRCA1/2 genetic testing to help select the surgical approach for patients with breast cancer in Japan remains unclear. PATIENTS AND METHODS:The study subjects were female patients with primary unilateral invasive breast cancer considered as candidates for breast-conserving surgery w...
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pub_type: 杂志文章
doi:10.1016/j.clbc.2020.08.004
更新日期:2020-08-20 00:00:00
abstract::Breast carcinoma in men is rare and comprises approximately 1% of all breast cancer cases. In contrast to the increase in the detection rate of ductal carcinoma in situ (DCIS) in women resulting from the wide use of screening mammography programs, the rate of male DCIS is still small and represents approximately 5% of...
journal_title:Clinical breast cancer
pub_type: 杂志文章,评审
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journal_title:Clinical breast cancer
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更新日期:2011-06-01 00:00:00
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doi:10.1016/j.clbc.2017.10.012
更新日期:2018-04-01 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2010-08-01 00:00:00
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journal_title:Clinical breast cancer
pub_type: 杂志文章
doi:10.1016/j.clbc.2016.06.018
更新日期:2017-02-01 00:00:00
abstract::The perinatal period, childhood, and adolescence are important intervals for breast cancer risk development. Endogenous estrogen exposure is thought to be highest in utero, and exposure to estrogens throughout life plays an important role in increasing breast cancer risk. Some evidence suggests that breast tissue is n...
journal_title:Clinical breast cancer
pub_type: 杂志文章,评审
doi:10.3816/CBC.2008.n.038
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abstract:BACKGROUND:Most investigations have compared triple-negative breast cancer (TNBC) to non-TNBC to elucidate clinical or epidemiologic differences between subtypes. We examined a contemporary cohort of patients with primary TNBC by detection and age at diagnosis within a population-based breast screening program to exami...
journal_title:Clinical breast cancer
pub_type: 杂志文章
doi:10.1016/j.clbc.2018.04.013
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journal_title:Clinical breast cancer
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更新日期:2010-02-01 00:00:00
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journal_title:Clinical breast cancer
pub_type: 杂志文章
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更新日期:2020-02-01 00:00:00
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journal_title:Clinical breast cancer
pub_type: 杂志文章,评审
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更新日期:2004-10-01 00:00:00
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journal_title:Clinical breast cancer
pub_type: 杂志文章
doi:10.1016/j.clbc.2011.03.008
更新日期:2011-04-01 00:00:00
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journal_title:Clinical breast cancer
pub_type: 杂志文章
doi:10.1016/j.clbc.2018.03.014
更新日期:2018-10-01 00:00:00
abstract::The development of third-generation aromatase inhibitors (AIs) has brought about a major change in the therapeutic approach to patients with hormone-sensitive breast cancer. In randomized clinical trials, each of the third-generation AIs has demonstrated efficacy in the adjuvant treatment of postmenopausal women with ...
journal_title:Clinical breast cancer
pub_type: 杂志文章,评审
doi:10.3816/CBC.2005.n.022
更新日期:2005-08-01 00:00:00
abstract::For detecting and diagnosing breast cancer at its earliest stage, mammography is the most sensitive technique currently available and is therefore the method of choice. Screen-film mammography has been used successfully as a screening test for breast cancer for > 2 decades. However, conventional mammography has substa...
journal_title:Clinical breast cancer
pub_type: 杂志文章,评审
doi:10.3816/cbc.2003.n.013
更新日期:2003-04-01 00:00:00
abstract::Tamoxifen reduced the risk of invasive breast cancer by 49% among women at increased risk for breast cancer in the Breast Cancer Prevention Trial P-1, and raloxifene reduced breast cancer incidence by more than 70% in the Multiple Outcomes of Raloxifene Evaluation osteoporosis trial. These findings led the National Su...
journal_title:Clinical breast cancer
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2002-06-01 00:00:00
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journal_title:Clinical breast cancer
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更新日期:2012-10-01 00:00:00
abstract:BACKGROUND:Novel targeted agents and combinations have become available in multiple lines of treatment for human epidermal growth factor receptor 2-positive (HER2(+)) metastatic breast cancer (MBC). In this context, alternatives to the lapatinib (L) and capecitabine (C) regimen, evaluating L combined with other cytotox...
journal_title:Clinical breast cancer
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2016-02-01 00:00:00