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Breast Cancer Research and Treatment

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https://www.readbyqxmd.com/read/28213783/high-pten-gene-expression-is-a-negative-prognostic-marker-in-human-primary-breast-cancers-with-preserved-p53-function
#1
Synnøve Yndestad, Eilin Austreid, Stian Knappskog, Ranjan Chrisanthar, Peer Kåre Lilleng, Per Eystein Lønning, Hans Petter Eikesdal
PURPOSE: PTEN is an important tumor suppressor in breast cancer. Here, we examined the prognostic and predictive value of PTEN and PTEN pseudogene (PTENP1) gene expression in patients with locally advanced breast cancer given neoadjuvant chemotherapy. METHODS: The association between pretreatment PTEN and PTENP1 gene expression, response to neoadjuvant chemotherapy, and recurrence-free and disease-specific survival was assessed in 364 patients with locally advanced breast cancer given doxorubicin, 5-fluorouracil/mitomycin, or epirubicin versus paclitaxel in three phase II prospective studies...
February 17, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28213782/prognosis-of-residual-axillary-disease-after-neoadjuvant-chemotherapy-in-clinically-node-positive-breast-cancer-patients-isolated-tumor-cells-and-micrometastases-carry-a-better-prognosis-than-macrometastases
#2
T J A van Nijnatten, J M Simons, M Moossdorff, L de Munck, M B I Lobbes, C C van der Pol, L B Koppert, E J T Luiten, M L Smidt
PURPOSE: The aim of this study was to compare disease-free survival (DFS) and overall survival (OS) between clinically node-positive breast cancer patients, treated with neoadjuvant chemotherapy (NAC), with axillary pathologic complete response (ypN0), residual axillary isolated tumor cells or micrometastases (ypNitc/mi), and residual axillary macrometastases (ypN1-3). METHODS: All patients diagnosed with clinically node-positive primary invasive breast cancer treated with NAC and subsequent axillary lymph node dissection between 2005 and 2008 were retrospectively analyzed...
February 17, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28213781/swedish-prospective-multicenter-trial-on-the-accuracy-and-clinical-relevance-of-sentinel-lymph-node-biopsy-before-neoadjuvant-systemic-therapy-in-breast-cancer
#3
Linda Zetterlund, Fuat Celebioglu, Rimma Axelsson, Jana de Boniface, Jan Frisell
PURPOSE: The timing of sentinel lymph node biopsy (SLNB) in the context of neoadjuvant systemic therapy (NAST) in breast cancer is still controversial. SLNB before NAST has been evaluated in few single-institution studies in which axillary lymph node dissection (ALND), however, was commonly not performed in case of a negative SLNB. We investigated the potential clinical relevance of SLNB before NAST by performing ALND in all patients after NAST. METHODS: This national multicenter trial prospectively enrolled clinically node-negative breast cancer patients planned for NAST at 13 recruiting Swedish hospitals between October 2010 and December 2015...
February 17, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28213780/risk-factors-associated-with-the-triple-negative-breast-cancer-subtype-within-four-race-ethnicities
#4
Carol A Parise, Vincent Caggiano
PURPOSE: The ER-/PR-/HER2- or triple-negative (TNBC) subtype is more prevalent among women who are young, black, Hispanic, and of lower SES. The purpose of this study is to determine if young age and low SES are associated with TNBC within four mutually exclusive race/ethnicities. METHODS: The study identified 19,283 cases of TNBC and 89,089 of ER+/PR+/HER2- from the California Cancer Registry. Logistic regression analyses were conducted separately for whites, blacks, Hispanics, and Asian/Pacific Islanders (API) to compute the adjusted odds ratios (OR) for age and SES for the TNBC versus the ER+/PR+/HER2- subtype...
February 17, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28210881/comprehensive-genomic-profiling-of-malignant-phyllodes-tumors-of-the-breast
#5
Sahar Nozad, Christine E Sheehan, Laurie M Gay, Julia A Elvin, Jo-Anne Vergilio, James Suh, Shakti Ramkissoon, Alexa B Schrock, Kim M Hirshfield, Nadia Ali, Shridar Ganesan, Siraj M Ali, Vincent A Miller, Philip J Stephens, Jeffrey S Ross, Jon H Chung
PURPOSE: Malignant phyllodes tumors (MPT) are exceptionally rare, and the genomic drivers of these tumors are still being elucidated. We performed comprehensive genomic profiling (CGP) of MPT to identify genomic alterations that will inform approaches to targeted therapy for patients with MPT, including relapsed, refractory, and metastatic disease. METHODS: DNA was extracted from formalin-fixed, paraffin-embedded samples from 24 consecutive patient cases of MPT...
February 17, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28205045/characteristics-of-brca1-2-mutations-carriers-including-large-genomic-rearrangements-in-high-risk-breast-cancer-patients
#6
Boyoung Park, Ji Yeon Sohn, Kyong-Ah Yoon, Keun Seok Lee, Eun Hae Cho, Myong Cheol Lim, Moon Jung Yang, Soo Jin Park, Moo Hyun Lee, See Youn Lee, Yoon Jung Chang, Dong Ock Lee, Sun-Young Kong, Eun Sook Lee
PURPOSE: We investigated the prevalence of BRCA1/2 small mutations and large genomic rearrangements in high risk breast cancer patients who attended a genetic counseling clinic. METHODS: In total 478 patients were assessed for BRCA1/2 mutations by direct sequencing, of whom, 306 were identified as non-carriers of BRCA1/2 mutation and assessed for large rearrangement mutations by multiplex ligation-dependent probe amplification. Family history and clinicopathological characteristics of patients were evaluated...
February 15, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28205044/clinical-tumor-stage-is-the-most-important-predictor-of-pathological-complete-response-rate-after-neoadjuvant-chemotherapy-in-breast-cancer-patients
#7
Briete Goorts, Thiemo J A van Nijnatten, Linda de Munck, Martine Moossdorff, Esther M Heuts, Maaike de Boer, Marc B I Lobbes, Marjolein L Smidt
BACKGROUND: Pathological complete response (pCR) is the ultimate response in breast cancer patients treated with neoadjuvant chemotherapy (NCT). It might be a surrogate outcome for disease-free survival (DFS) and overall survival (OS). We studied the effect of clinical tumor stage (cT-stage) on tumor pCR and the effect of pCR per cT-stage on 5-year OS and DFS. METHODS: Using the Netherlands Cancer Registry, all primary invasive breast cancer patients treated with NCT from 2005 until 2008 were identified...
February 15, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28205043/a-polygenic-risk-score-for-breast-cancer-risk-in-a-taiwanese-population
#8
Yi-Chen Hsieh, Shih-Hsin Tu, Chien-Tien Su, Er-Chieh Cho, Chih-Hsiung Wu, Mao-Chih Hsieh, Shiyng-Yu Lin, Yun-Ru Liu, Chin-Sheng Hung, Hung-Yi Chiou
BACKGROUND: Multiple common variants identified by genome-wide association studies showed limited evidence of the risk of breast cancer in Taiwan. In this study, we analyzed the breast cancer risk in relation to 13 individual single-nucleotide polymorphisms (SNPs) identified by a GWAS in an Asian population. METHODS: In total, 446 breast cancer patients and 514 healthy controls were recruited for this case-control study. In addition, we developed a polygenic risk score (PRS) including those variants significantly associated with breast cancer risk, and also evaluated the contribution of PRS and clinical risk factors to breast cancer using receiver operating characteristic curve (AUC)...
February 15, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28205042/screening-relevant-age-threshold-of-70%C3%A2-years-and-older-is-a-stronger-determinant-for-the-choice-of-adjuvant-treatment-in-breast-cancer-patients-than-tumor-biology
#9
E C Inwald, O Ortmann, M Koller, F Zeman, F Hofstädter, M Evert, G Brockhoff, M Klinkhammer-Schalke
PURPOSE: The 70-year threshold determines whether patients are eligible or not for the breast cancer screening program in Germany. It is not known whether this age threshold also influences the choice of adjuvant treatment and ultimate outcome. METHODS: 3463 patients were analyzed from the clinical cancer registry Regensburg (Germany) with primary, non-metastatic invasive breast cancer diagnosed between 2000 and 2012. The distribution of tumor biological subtypes was evaluated in breast cancer patients both in those eligible for screening (ESG, 50-69 years) and those not eligible for screening (NESG, ≥70 years)...
February 15, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28194609/a-high-frequency-of-palb2-mutations-in-jamaican-patients-with-breast-cancer
#10
Jordan Lerner-Ellis, Talia Donenberg, Humayun Ahmed, Sophia George, Gilian Wharfe, Sheray Chin, Dwight Lowe, Robert Royer, Shiyu Zhang, Steven Narod, Judith Hurley, Mohammad R Akbari
PURPOSE: Jamaica is an island nation with one of the highest breast cancer incidence rates in the Caribbean (40/100,000 per year). The contribution of cancer susceptibility gene mutations to the burden of breast cancer in Jamaica has not yet been explored. We sought to determine the prevalence of germline mutations in BRCA1, BRCA2, and PALB2 in 179 unselected Jamaican women with breast cancer. METHODS: We sequenced the entire coding regions of BRCA1, BRCA2, and PALB2 for all the study subjects...
February 13, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28194538/the-influences-of-peritumoral-lymphatic-invasion-and-vascular-invasion-on-the-survival-and-recurrence-according-to-the-molecular-subtypes-of-breast-cancer
#11
Ki-Tae Hwang, Young A Kim, Jongjin Kim, A Jung Chu, Ji Hyun Chang, So Won Oh, Kyu Ri Hwang, Young Jun Chai
PURPOSE: We aimed to compare the influences of lymphatic invasion (LI) and vascular invasion (VI) on survival and recurrence according to the molecular subtypes of breast cancer. METHODS: We retrospectively analyzed data on 820 breast cancer patients and assessed overall survival (OS) and disease-free survival (DFS) according to LI and VI using the Kaplan-Meier estimator and the Cox proportional hazards model. RESULTS: Both positive LI and positive VI showed inferior OS and DFS compared with negative LI and negative VI (all p < 0...
February 13, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28190252/the-big-2-04-mrc-eortc-supremo-trial-pathology-quality-assurance-of-a-large-phase-3-randomised-international-clinical-trial-of-postmastectomy-radiotherapy-in-intermediate-risk-breast-cancer
#12
J S Thomas, A M Hanby, N Russell, G van Tienhoven, K Riddle, N Anderson, D A Cameron, J M S Bartlett, T Piper, C Cunningham, P Canney, I H Kunkler
INTRODUCTION: SUPREMO is a phase 3 randomised trial evaluating radiotherapy post-mastectomy for intermediate-risk breast cancer. 1688 patients were enrolled from 16 countries between 2006 and 2013. We report the results of central pathology review carried out for quality assurance. PATIENTS AND METHODS: A single recut haematoxylin and eosin (H&E) tumour section was assessed by one of two reviewing pathologists, blinded to the originally reported pathology and patient data...
February 11, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28190251/sleep-duration-and-breast-cancer-prognosis-perspectives-from-the-women-s-healthy-eating-and-living-study
#13
Catherine R Marinac, Sandahl H Nelson, Shirley W Flatt, Loki Natarajan, John P Pierce, Ruth E Patterson
PURPOSE: To examine whether baseline sleep duration or changes in sleep duration are associated with breast cancer prognosis among early-stage breast cancer survivors in the multi-center Women's Healthy Eating and Living Study. METHODS: Data were collected from 1995 to 2010. Analysis included 3047 women. Sleep duration was self-reported at baseline and follow-up intervals. Cox proportional hazard models were used to investigate whether baseline sleep duration was associated with breast cancer recurrence, breast cancer-specific mortality, and all-cause mortality...
February 11, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28190250/plasma-carotenoids-and-the-risk-of-premalignant-breast-disease-in-women-aged-50-and-younger-a-nested-case-control-study
#14
Kevin Cohen, Ying Liu, Jingqin Luo, Catherine M Appleton, Graham A Colditz
PURPOSE: To examine the association of plasma carotenoids, micronutrients in fruits, and vegetables, with risk of premalignant breast disease (PBD) in younger women. METHODS: Blood samples were collected at the Siteman Cancer Center between 2008 and 2012 from 3537 women aged 50 or younger with no history of cancer or PBD. The analysis included 147 participants diagnosed with benign breast disease or breast carcinoma in situ during a 27-month follow-up and 293 controls...
February 11, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28190249/diffuse-optical-tomography-changes-correlate-with-residual-cancer-burden-after-neoadjuvant-chemotherapy-in-breast-cancer-patients
#15
Emerson A Lim, Jacqueline E Gunther, Hyun K Kim, Molly Flexman, Hanina Hibshoosh, Katherine Crew, Bret Taback, Jessica Campbell, Kevin Kalinsky, Andreas Hielscher, Dawn L Hershman
PURPOSE: Breast cancer (BC) patients who achieve a favorable residual cancer burden (RCB) after neoadjuvant chemotherapy (NACT) have an improved recurrence-free survival. Those who have an unfavorable RCB will have gone through months of ineffective chemotherapy. No ideal method exists to predict a favorable RCB early during NACT. Diffuse optical tomography (DOT) is a novel imaging modality that uses near-infrared light to assess hemoglobin concentrations within breast tumors. We hypothesized that the 2-week percent change in DOT-measured hemoglobin concentrations would associate with RCB...
February 11, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28190248/opposing-roles-of-nfkb2-gene-products-p100-and-p52-in-the-regulation-of-breast-cancer-stem-cells
#16
Syn Kok Yeo, Rhiannon French, Filomena Spada, Richard Clarkson
PURPOSE: Nuclear factor-kappa B (NF-κB) signalling has been shown to regulate properties of breast cancer stem cells. However, the specific contribution of the non-canonical NF-κB pathway, components of which are elevated in aggressive breast cancer has not been addressed. METHODS: Through shRNA silencing of the Nfkb2 gene, the role of p100/p52 in 4T1 and N202.1A cell lines were assessed by NF-κB reporter, invasion, tumoursphere and orthotopic transplantation assays...
February 11, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28190247/pik3ca-mutations-and-tp53-alterations-cooperate-to-increase-cancerous-phenotypes-and-tumor-heterogeneity
#17
Sarah Croessmann, Hong Yuen Wong, Daniel J Zabransky, David Chu, D Marc Rosen, Justin Cidado, Rory L Cochran, W Brian Dalton, Bracha Erlanger, Karen Cravero, Berry Button, Kelly Kyker-Snowman, Paula J Hurley, Josh Lauring, Ben Ho Park
BACKGROUND/PURPOSE: The combined contributions of oncogenes and tumor suppressor genes toward carcinogenesis remain poorly understood. Elucidation of cancer gene cooperativity can provide new insights leading to more effective use of therapies. EXPERIMENTAL DESIGN/METHODS: We used somatic cell genome editing to introduce singly and in combination PIK3CA mutations (E545K or H1047R) with TP53 alterations (R248W or knockout), to assess any enhanced cancerous phenotypes...
February 11, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28185146/mr-imaging-features-associated-with-distant-metastasis-free-survival-of-patients-with-invasive-breast-cancer-a-case-control-study
#18
Sung Eun Song, Sung Ui Shin, Hyeong-Gon Moon, Han Suk Ryu, Kwangsoo Kim, Woo Kyung Moon
PURPOSE: Preoperative breast magnetic resonance (MR) imaging features of primary breast cancers may have the potential to act as prognostic biomarkers by providing morphologic and kinetic features representing inter- or intra-tumor heterogeneity. Recent radiogenomic studies reveal that several radiologist-annotated image features are associated with genes or signal pathways involved in tumor progression, treatment resistance, and distant metastasis (DM). We investigate whether preoperative breast MR imaging features are associated with worse DM-free survival in patients with invasive breast cancer...
February 9, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28185145/erratum-to-radiation-therapy-targets-and-the-risk-of-breast-cancer-related-lymphedema-a-systematic-review-and-network-meta-analysis
#19
Simona F Shaitelman, Yi-Ju Chiang, Kate D Griffin, Sarah M De Snyder, Benjamin D Smith, Mark V Schaverien, Wendy A Woodward, Janice N Cormier
No abstract text is available yet for this article.
February 9, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28185144/complications-and-thromboembolic-events-associated-with-tamoxifen-therapy-in-patients-with-breast-cancer-undergoing-microvascular-breast-reconstruction-a-systematic-review-and-meta-analysis
#20
REVIEW
Rajiv P Parikh, Elizabeth B Odom, Liyang Yu, Graham A Colditz, Terence M Myckatyn
PURPOSE: Tamoxifen therapy is integral in the treatment of patients with hormone receptor-positive breast cancer. However, there is an association between tamoxifen and thromboembolic events. Flap and systemic thromboembolic events have devastating consequences in microvascular breast reconstruction. Currently, there are conflicting data on the association between tamoxifen therapy and thromboembolic complications for patients undergoing microvascular breast reconstruction. The objective of this study is to determine if perioperative tamoxifen therapy modifies the risk of complications and thromboembolic events for patients with breast cancer undergoing microvascular breast reconstruction...
February 9, 2017: Breast Cancer Research and Treatment
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