Abstract:
:We attempted to develop a highly sensitive and specific method for the detection of circulating tumor DNA (ctDNA) using a digital PCR (dPCR) assay for PIK3CA mutations (i.e., H1047R, E545K, and E542K) in primary breast cancer patients. The sensitivity of the dPCR assay for the mutant alleles was examined using cell lines with PIK3CA mutations and proved to be 0.01 %. Serum samples were collected pre-operatively from 313 stage I-III breast cancer patients, of whom 110 were found to have PIK3CA mutant tumors. The serum samples from these patients with PIK3CA mutant tumors were subjected to the dPCR assay, and 25 (22.7 %) were found to be positive. No PIK3CA mutant ctDNA was detected in the serum samples of 50 healthy women and 30 breast cancer patients with PIK3CA non-mutant tumors. The patients with PIK3CA mutant ctDNA were dichotomized into mutant ctDNA-high (ctDNA(high)) and ctDNA-low (ctDNA(low)) groups based on the median. The ctDNA(high) patients exhibited significantly shorter recurrence-free survival (RFS; P = 0.0002) and overall survival rates (OS; P = 0.0048) compared to those exhibited by the combined ctDNA(low) patient and ctDNA-free patient group. Multivariate analysis revealed that ctDNA(high) status significantly predicted poor RFS and OS and did so independently of conventional histological parameters. These results suggest that dPCR is a highly sensitive and specific method for the detection of PIK3CA mutant ctDNA and that ctDNA(high) but not ctDNA(low) status is a significant and independent prognostic factor for primary breast cancer patients.
journal_name
Breast Cancer Res Treatjournal_title
Breast cancer research and treatmentauthors
Oshiro C,Kagara N,Naoi Y,Shimoda M,Shimomura A,Maruyama N,Shimazu K,Kim SJ,Noguchi Sdoi
10.1007/s10549-015-3322-6subject
Has Abstractpub_date
2015-04-01 00:00:00pages
299-307issue
2eissn
0167-6806issn
1573-7217journal_volume
150pub_type
杂志文章abstract:INTRODUCTION:Axillary node fine needle aspiration cytology (FNAC) has the potential to triage women with operable breast cancer to initial nodal surgical procedure. Because of variability in the reported accuracy of this test its role and clinical utility in pre-operative staging remains controversial. METHODS:We retr...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-006-9355-0
更新日期:2007-05-01 00:00:00
abstract::Serum melatonin (MLT) levels have been reported to diminish significantly by the 5th and 6th decades of life as the incidence of breast cancer increases. Given MLT's anti-cancer activity, we hypothesize that age-related decline in pineal MLT production leads to enhanced breast cancer development and growth as women ag...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-010-0958-0
更新日期:2011-05-01 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:BACKGROUND:At the present time, there is no consensus on the association between benign thyroid diseases and breast cancer (BC). Therefore, the aim of this study is to help shed some light on the association between hyperthyroidism, hypothyroidism, and thyroiditis and breast cancer risk. METHODS:Use of the Disease Ana...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-05675-6
更新日期:2020-07-01 00:00:00
abstract::The diagnosis and treatment of patients with breast cancer is beginning to be influenced by new ideas and discoveries emerging from the field of angiogenesis research. This field, pursued in the laboratory for more than 20 years, has in the past 5 years generated clinical applications. Some of these applications have ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/BF00666033
更新日期:1995-01-01 00:00:00
abstract::Experimental evidence suggests an important role of the type I IGF receptor (IGF-IR) in breast cancer development. Breast tumors and breast cancer cell lines express the IGF-IR. IGF-IR levels are higher in cancer cells than in normal breast tissue or in benign mammary tumors. The ligands of the IGF-IR are potent mitog...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1023/a:1005907101686
更新日期:1998-02-01 00:00:00
abstract::Mortality due to causes other than breast cancer is a potential competing risk which may alter the incidence probability of breast cancer and as such should be taken into account in predictive modelling. We used data from the Canadian National Breast Screening Study (CNBSS), which consist of two randomized controlled ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-012-2113-6
更新日期:2012-07-01 00:00:00
abstract::Immunotoxins are a relatively new class of cytotoxic agents consisting of a catalytic toxin linked to an appropriate targeting ligand. The ligand directs the toxin to the surface of a tumor cell, whereupon the toxin enters the cell and catalytically inactivates the ribosome, thus disrupting protein synthesis and effec...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/BF00666210
更新日期:1994-01-01 00:00:00
abstract:BACKGROUND:Several recent epidemiologic studies examined the association between breast cancer risk and an inherited, single-nucleotide polymorphism in the HER2 gene, codon 655 G to A, which leads to an amino acid substitution of Ile to Val. Results of previous studies have been mixed, with most studies showing no asso...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1024068525763
更新日期:2003-06-01 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
abstract::Gene fusions have long been considered principally as the oncogenic events of hematologic malignancies, but have recently gained wide attention in solid tumors due to several milestone discoveries and the advancement of deep sequencing technologies. With the progress in deep sequencing studies of breast cancer transcr...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/s10549-016-3876-y
更新日期:2016-07-01 00:00:00
abstract::Numerous studies have demonstrated that angiogenesis and in particular VEGF over-expression play an essential role in the progression and metastatic potential of breast cancer. Bevacizumab is a humanized recombinant monoclonal antibody that specifically blocks the binding of VEGF to high-affinity receptors and it has ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,meta分析,评审
doi:10.1007/s10549-009-0727-0
更新日期:2010-07-01 00:00:00
abstract::Metformin may reduce the incidence of breast cancer and enhance response to neoadjuvant chemotherapy in diabetic women. This trial examined the effects of metformin on Ki67 and gene expression in primary breast cancer. Non-diabetic women with operable invasive breast cancer received pre-operative metformin. A pilot co...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/s10549-011-1612-1
更新日期:2011-08-01 00:00:00
abstract::Resistance of breast cancers to targeted hormone receptor (HR) or human epidermal growth factor receptor 2 (HER2) inhibitors often occurs through dysregulation of the phosphoinositide 3-kinase, protein kinase B/AKT/mammalian target of rapamycin (PI3K/AKT/mTOR) pathway. Presently, no targeted therapies exist for breast...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-014-2877-y
更新日期:2014-04-01 00:00:00
abstract::We analyzed the p53 mutational status, mRNA and protein expression in 24 human breast carcinoma cell lines. Following measurement of their DNA content with flow cytometry, we ascertained the copy numbers of the centromere of chromosome 17 (cen17) and p53 with fluorescence in situ hybridization (FISH). A functional yea...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1023351717408
更新日期:2003-05-01 00:00:00
abstract::To determine whether capecitabine schedule adaptation improves the tolerability of capecitabine-paclitaxel combination therapy for metastatic breast cancer (MBC), patients with anthracycline-pretreated HER2-negative MBC were randomized to either arm A (21-day cycles: capecitabine 1,000 mg/m(2) twice daily, days 1-14; ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,随机对照试验
doi:10.1007/s10549-011-1776-8
更新日期:2012-01-01 00:00:00
abstract::Overexpression of CD24 is an independent prognostic factor for breast cancer. Recently, two polymorphisms in the CD24 gene were linked to disease risk and progression in autoimmune diseases. Here, we evaluated the clinical relevance of these polymorphisms with respect to their potential to predict a pathologic complet...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1007/s10549-011-1759-9
更新日期:2012-04-01 00:00:00
abstract::Thirty-eight patients treated for primary breast cancer as part of a prospective randomized clinical trial were questioned retrospectively as to their psychosocial adaptation to treatment. Twenty patients had received mastectomy and eighteen had received excisional biopsy plus radiation of the intact breast. Aside fro...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF01807591
更新日期:1983-01-01 00:00:00
abstract::Over the past two decades, the simple model for control of breast cancer growth involving one or two factors acting directly or indirectly via endocrine pathways has turned into a complex model implicating numerous interacting factors and the diverse cell populations constituting breast tumors. Current approaches to b...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/BF00683193
更新日期:1993-01-01 00:00:00
abstract::Neurofibromatosis type 1 (NF1) is a common dominant autosomal disorder caused by mutations in the NF1 gene. The main manifestations of NF1 are café-au-lait spots, neurofibromas, intertriginous freckling, Lisch nodules, and malignancy, including peripheral nerve sheath tumors, central nervous system gliomas, and a vari...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-013-2538-6
更新日期:2013-06-01 00:00:00
abstract::The DNA repair pathway is known to play a role in the etiology of breast cancer. A number of studies have demonstrated that common germline variants in genes involved in the DNA repair pathway influence breast cancer risk. To assess whether alterations in DNA repair genes contribute to breast cancer, we genotyped 12 s...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-008-0084-4
更新日期:2009-06-01 00:00:00
abstract::Many patients with metastatic breast cancer receive several types of chemotherapy, although it is recognized that there is a declining probability of response. A major problem confronts oncologists in deciding when to recommend to patients that no further chemotherapy should be given. To address this problem we have a...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1006123721205
更新日期:1999-04-01 00:00:00
abstract::The glycolytic phenotype is a widespread phenomenon in solid cancer forms, including breast cancer. Dichloroacetate (DCA) has recently been proposed as a novel and relatively non-toxic anti-cancer agent that can reverse the glycolytic phenotype in cancer cells through the inhibition of pyruvate dehydrogenase kinase. W...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-009-0435-9
更新日期:2010-02-01 00:00:00
abstract::A minority of early invasive breast cancers show a pattern of central necrosis and fibrosis (CNF). Previous studies have documented an adverse prognostic impact and association with other adverse pathological features, but its predictive importance for therapy selection is unknown. We examined the prognostic and predi...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1007/s10549-009-0360-y
更新日期:2010-05-01 00:00:00
abstract::Complete remissions in patients with metastatic breast cancer using endocrine therapy or chemotherapy are infrequent. Breast tumors are known to be heterogeneous with respect to estrogen receptor status, and the low complete remission rate may be related to this biochemical heterogeneity. Based on laboratory experimen...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01805721
更新日期:1982-01-01 00:00:00
abstract::Oestrogen receptor (ER) negative breast cancers are more likely to achieve a pathological complete response (pCR) to neoadjuvant chemotherapy compared to those with ER positive tumours. ER positive tumours exhibit low proliferation and ER negative cancers high proliferation. The aim of this study was to determine to w...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-009-0329-x
更新日期:2010-01-01 00:00:00
abstract:PURPOSE:Combining molecular therapies with chemotherapy may offer an improved clinical outcome for chemoresistant tumours. Sphingosine-1-phosphate (S1P) receptor antagonist and sphingosine kinase 1 (SK1) inhibitor FTY720 (FTY) has promising anticancer properties, however, it causes systemic lymphopenia which impairs it...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-017-4380-8
更新日期:2017-10-01 00:00:00
abstract::Mammographic density (MD) is a strong marker of breast cancer risk, but it is debated whether the association holds, and is of a similar magnitude, for different subtypes of breast cancer defined by receptor status or gene expression profiles. A literature search conducted in June 2012 was used to identify all studies...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,meta分析
doi:10.1007/s10549-012-2362-4
更新日期:2013-01-01 00:00:00
abstract:PURPOSE:Chemotherapy-induced peripheral neuropathy (CIPN) is a common, debilitating side effect in cancer survivors. This study aimed to assess the characteristics of quantitative sensory testing (QST) and its correlation with patient-reported outcomes (PROs) in cancer patients with and without CIPN. METHODS:We conduc...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-06079-2
更新日期:2021-01-28 00:00:00
abstract::Loss of heterozygosity (LOH) in loci of the 10q23 region that harbor the PTEN gene and mutations in the sequence of this gene have been found in several primary human tumors including breast carcinomas, suggesting that this gene could be implicated in their pathogenesis. We investigated allelic losses in microsatellit...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1006273516976
更新日期:1999-10-01 00:00:00