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https://www.readbyqxmd.com/read/28929359/immunohistochemical-versus-molecular-blueprint-and-mammaprint-subtyping-of-breast-carcinoma-outcome-results-from-the-eortc-10041-big-3-04-mindact-trial
#1
G Viale, F A de Snoo, L Slaets, J Bogaerts, L van 't Veer, E J Rutgers, M J Piccart-Gebhart, L Stork-Sloots, A Glas, L Russo, P Dell'Orto, K Tryfonidis, S Litière, F Cardoso
PURPOSE: This study compares immunohistochemical (IHC) versus molecular subtyping (BluePrint and MammaPrint) in the population of patients enrolled in MINDACT and outcome based on molecular subtyping (MS) versus surrogate pathological subtyping (PS) as defined by the 2013 St. Gallen guidelines. METHODS: MS classified patients in the following subtypes: Luminal A, Luminal B, HER-2-, and Basal-type. IHC/FISH for pathological subtyping (ER, PgR, HER-2, and Ki67) was centrally assessed in the European Institute of Oncology (n = 5806)...
September 19, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28921714/fetal-microchimerism-in-human-brain-tumors
#2
Lauren Broestl, Joshua B Rubin, Sonika Dahiya
Sex differences in cancer incidence and survival, including central nervous system tumors, are well documented. Multiple mechanisms contribute to sex differences in health and disease. Recently, the presence of fetal-in-maternal microchimeric cells has been shown to have prognostic significance in breast and colorectal cancers. The frequency and potential role of these cells has not been investigated in brain tumors. We therefore selected two common primary adult brain tumors for this purpose: meningioma, which is sex hormone responsive and has a higher incidence in women, and glioblastoma, which is sex hormone independent and occurs more commonly in men...
September 18, 2017: Brain Pathology
https://www.readbyqxmd.com/read/28889723/expression-of-c-myc-and-%C3%AE-catenin-and-their-correlation-in-triple-negative-breast-cancer
#3
Jiankui Wang, Mei Li, Dedian Chen, Jianyun Nie, Yan Xi, Xiaojuan Yang, Yun Chen, Zhuanqing Yang
BACKGROUND: The present study was planned to study the expression of C-myc and β- catenin in triple negative breast cancer (TNBC) tissue. Furthermore, their relations to clinical features of the tumor and the survival prognosis were also studied. Additionally, correlation was evaluated between the expression of C-myc and β- catenin to provide the theoretical basis for the targeted therapy of TNBC. METHODS: 60 cases of patients diagnosed with TNBC for the first time were selected for the study...
September 8, 2017: Minerva Medica
https://www.readbyqxmd.com/read/28877070/effects-of-hydrochloric-acid-and-formic-acid-decalcification-on-breast-tumor-biomarkers-and-her2-fluorescence-in-situ-hybridization
#4
Beth Z Clark, Jennifer M Yoest, Agnieszka Onisko, David J Dabbs
Biomarker analysis of metastatic breast carcinoma (MBC) is routinely recommended by ASCO/CAP guidelines, and establishing a diagnosis of MBC often requires immunohistochemistry (IHC). The reliability of breast tumor biomarkers and breast-specific markers on decalcified tissues has not been extensively studied. We performed IHC studies on breast tumors exposed to hydrochloric acid (HCl) and formic acid (FA) decalcification solutions, and HER2 fluorescence in situ hybridization on a subset of these tumors to establish a protocol for handling bone specimens with suspicion for MBC...
September 4, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28870680/correlation-of-myc-gene-and-protein-status-with-breast-cancer-subtypes-and-outcome-of-patients-treated-with-anthracycline-based-adjuvant-chemotherapy-pooled-analysis-of-2-hellenic-cooperative-group-phase-iii-trials
#5
Anna Batistatou, Vassiliki Kotoula, Mattheos Bobos, George Kouvatseas, Flora Zagouri, Eleftheria Tsolaki, Helen Gogas, Angelos Koutras, George Pentheroudakis, Eleni Timotheadou, Stavroula Pervana, Anna Goussia, Kalliopi Petraki, Maria Sotiropoulou, Triantafyllia Koletsa, Evangelia Razis, Paris Kosmidis, Gerasimos Aravantinos, Christos Papadimitriou, Dimitrios Pectasides, George Fountzilas
BACKGROUND: The prognostic/predictive value of aberrant MYC gene copies and protein expression is not clear in breast cancer. PATIENTS AND METHODS: Early breast cancer patients were treated with anthracycline-containing chemotherapy within 2 randomized adjuvant trials. MYC gene and centromere-8 status, as well as Myc protein expression were investigated on 1060 paraffin tumors with fluorescence in situ hybridization and immunohistochemistry, respectively. RESULTS: MYC amplification was present in 45% and polysomy-8 in 23% of the tumors...
July 13, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28743832/a-nomogram-to-predict-her2-status-in-breast-cancer-patients-with-her2-borderline-disease-as-determined-via-immunohistochemistry
#6
Qianqian Guo, Kai Chen, Xiaojie Lin, Yi Su, Rui Xu, Yan Dai, Chang Qiu, Xue Song, Siying Mao, Qianjun Chen
This study aimed to develop a nomogram to predict fluorescence in situ hybridization (FISH) assay results for HER2-borderline breast cancer as determined via immunohistochemistry (IHC) among patients in China. We reviewed a database of breast cancer patients diagnosed between January 2007 and April 2013 at our institutions. We used logistic regression to develop a nomogram and we used receiver operating characteristic curve analysis and calibration plots to validate our nomogram. In total, 1138, 301 and 344 patients had IHC-determined HER2-negative, HER2-borderline and HER2-positive disease, respectively...
July 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28637802/tumor-uptake-of-64-cu-dota-trastuzumab-in-patients-with-metastatic-breast-cancer
#7
Joanne E Mortimer, James R Bading, Jinha M Park, Paul H Frankel, Mary I Carroll, Tri T Tran, Erasmus K Poku, Russell C Rockne, Andrew A Raubitschek, John E Shively, David M Colcher
Purpose: To characterize the relationship between tumor uptake of (64)Cu-DOTA-trastuzumab as measured by PET/CT and standard, immunohistochemistry (IHC)-based, histopathologic classification of human epidermal growth factor receptor 2 (HER2) status in women with metastatic breast cancer (MBC). Experimental Design: Women with biopsy-confirmed MBC and not given trastuzumab for [&ge] 2 months underwent complete staging, including (18)F-fluorodeoxyglucose PET/CT. Patients were classified as HER2-positive (HER2+) or negative (HER2-) based on fluorescence in situ hybridization (FISH)-supplemented IHC of biopsied tumor tissue...
June 21, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28579318/the-zebrafish-kidney-mutant-zeppelin-reveals-that-brca2-fancd1-is-essential-for-pronephros-development
#8
Paul T Kroeger, Bridgette E Drummond, Rachel Miceli, Michael McKernan, Gary F Gerlach, Amanda N Marra, Annemarie Fox, Kristen K McCampbell, Ignaty Leshchiner, Adriana Rodriguez-Mari, Ruth BreMiller, Ryan Thummel, Alan J Davidson, John Postlethwait, Wolfram Goessling, Rebecca A Wingert
The zebrafish kidney is conserved with other vertebrates, making it an excellent genetic model to study renal development. The kidney collects metabolic waste using a blood filter with specialized epithelial cells known as podocytes. Podocyte formation is poorly understood but relevant to many kidney diseases, as podocyte injury leads to progressive scarring and organ failure. zeppelin (zep) was isolated in a forward screen for kidney mutants and identified as a homozygous recessive lethal allele that causes reduced podocyte numbers, deficient filtration, and fluid imbalance...
August 1, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28521178/impact-of-2013-asco-cap-guidelines-on-her2-determination-of-invasive-breast-cancer-a-single-institution-experience-using-frontline-dual-color-fish
#9
M Ragazzi, A Bisagni, E Gasparini, E Kuhn, C Bassano, I Tamagnini, M Foroni, M Bortesi, G Falco, G Ferrari, L Braglia, L Savoldi, A Bologna, R Di Cicilia, G Bisagni, G Gardini
PURPOSE: The new ASCO/CAP guidelines published in 2013 (AC2013) significantly modified the scoring criteria for HER2-FISH, introducing the most controversial change to the HER2-equivocal category. We retrospectively evaluated the impact of AC2013 in a cohort of consecutive invasive breast cancers (IBCs) analyzed with frontline dual-color FISH. METHODS: 2788 consecutive IBCs were reclassified based on the AC2013 guidelines. Clinico-pathological features of equivocal IBCs were compared with HER2-negative and HER2-positive IBCs...
August 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28447240/relationship-between-ihc4-score-and-response-to-neo-adjuvant-chemotherapy-in-estrogen-receptor-positive-breast-cancer
#10
A Sheri, I E Smith, M Hills, R L Jones, S R Johnston, M Dowsett
AIMS: To determine whether IHC4 score assessed on pre-treatment core biopsies (i) predicts response to neo-adjuvant chemotherapy in ER-positive (ER+) breast cancer; (ii) provides more predictive information than Ki67 alone. METHODS: 113 patients with ER+ primary breast cancer treated with neo-adjuvant chemotherapy at the Royal Marsden Hospital between 2002 and 2010 were included in the study. Pathologic assessment of the excision specimen was made for residual disease...
July 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28446533/prognostic-evaluation-of-epidermal-growth-factor-receptor-egfr-genotype-and-phenotype-parameters-in-triple-negative-breast-cancers
#11
Sofia Levva, Vassiliki Kotoula, Ioannis Kostopoulos, Kyriaki Manousou, Christos Papadimitriou, Kyriaki Papadopoulou, Sotiris Lakis, Kyriakos Koukoulias, Vasilios Karavasilis, George Pentheroudakis, Eufemia Balassi, Flora Zagouri, Ioannis G Kaklamanos, Dimitrios Pectasides, Evangelia Razis, Gerasimos Aravantinos, Pavlos Papakostas, Dimitrios Bafaloukos, Grigorios Rallis, Helen Gogas, George Fountzilas
BACKGROUND: Epidermal growth factor receptor (EGFR) aberrations have been implicated in the pathogenesis of triple-negative breast cancer (TNBC) but their impact on prognosis and, therefore, druggability, remain controversial. Herein, we studied EGFR aberrations at different molecular levels and assessed their prognostic impact in patients with operable TNBC treated with adjuvant anthracycline-based chemotherapy. MATERIALS AND METHODS: We evaluated the prognostic impact of EGFR gene status by fluorescent in situ hybridization (FISH), EGFR coding mutations by Sanger and next-generation sequencing, relative EGFR messenger RNA (mRNA) levels by qPCR (upper quartile) and EGFR and p53 protein expression by immunohistochemistry (IHC), in 352 centrally-assessed tumors from an equal number of TNBC patients...
May 2017: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/28286614/is-there-any-concordance-between-of-ihc-with-fish-in-her2-positive-breast-cancer-patients
#12
Mehrdad Payandeh, Masoud Sadeghi, Edris Sadeghi, Alireza Janbakhsh
Background: In developed or developing countries, the most common cancer in women is breast cancer with a pick in 40-50 years in Asia. Herein, we compared the association between IHC with FISH in HER2-positive breast cancer patients and affection of trastuzumab on disease free survival and overall survival (OS). Subjects and Methods: Immunohistochemical (IHC) analysis of hormone receptors and HER2 was performed in 133 patients with breast cancer between 2003 and 2014. Patients were selected for Herceptin adjuvant treatment, according to IHC 3+ or FISH+...
January 1, 2017: International Journal of Hematology-oncology and Stem Cell Research
https://www.readbyqxmd.com/read/28027945/next-generation-assessment-of-human-epidermal-growth-factor-receptor-2-erbb2-amplification-status-clinical-validation-in-the-context-of-a-hybrid-capture-based-comprehensive-solid-tumor-genomic-profiling-assay
#13
Dara S Ross, Ahmet Zehir, Donavan T Cheng, Ryma Benayed, Khedoudja Nafa, Jaclyn F Hechtman, Yelena Y Janjigian, Britta Weigelt, Pedram Razavi, David M Hyman, José Baselga, Michael F Berger, Marc Ladanyi, Maria E Arcila
Establishing ERBB2 [human epidermal growth factor receptor 2 (HER2)] amplification status in breast and gastric carcinomas is essential to treatment selection. Immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) constitute the current standard for assessment. With further advancements in genomic medicine, new clinically relevant biomarkers are rapidly emerging and options for targeted therapy are increasing in patients with advanced disease, driving the need for comprehensive molecular profiling...
March 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/27993329/an-mrna-gene-expression-based-signature-to-identify-fgfr1-amplified-estrogen-receptor-positive-breast-tumors
#14
Jingqin Luo, Shuzhen Liu, Samuel Leung, Alejandro A Gru, Yu Tao, Jeremy Hoog, Julie Ho, Sherri R Davies, D Craig Allred, Andrea L Salavaggione, Jacqueline Snider, Elaine R Mardis, Torsten O Nielsen, Matthew J Ellis
Fibroblast growth factor receptor 1 (FGFR1) amplification drives poor prognosis and is an emerging therapeutic target. We sought to construct a multigene mRNA expression signature to efficiently identify FGFR1-amplified estrogen receptor-positive (ER(+)) breast tumors. Five independent breast tumor series were analyzed. Genes discriminative for FGFR1 amplification were screened transcriptome-wide by receiver operating characteristic analyses. The METABRIC series was leveraged to construct/evaluate four approaches to signature composition...
January 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/27895501/a-fish-based-method-for-assessment-of-her-2-amplification-status-in-breast-cancer-circulating-tumor-cells-following-cellsearch-isolation
#15
Henrik Frithiof, Kristina Aaltonen, Lisa Rydén
INTRODUCTION: Amplification of the HER-2/neu (HER-2) proto-oncogene occurs in 10%-15% of primary breast cancer, leading to an activated HER-2 receptor, augmenting growth of cancer cells. Tumor classification is determined in primary tumor tissue and metastatic biopsies. However, malignant cells tend to alter their phenotype during disease progression. Circulating tumor cell (CTC) analysis may serve as an alternative to repeated biopsies. The Food and Drug Administration-approved CellSearch system allows determination of the HER-2 protein, but not of the HER-2 gene...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27893937/prognostic-significance-of-equivocal-human-epidermal-growth-factor-receptor-2-results-and-clinical-utility-of-alternative-chromosome-17-genes-in-patients-with-invasive-breast-cancer-a-cohort-study
#16
Nour Sneige, Kenneth R Hess, Asha S Multani, Yun Gong, Nuhad K Ibrahim
BACKGROUND: The 2013 testing guidelines for determining the human epidermal growth factor receptor 2 (HER2) status include new cutoff points for the HER2/chromosome enumeration probe 17 (CEP17) ratio and the average HER2 copy number per cell, and they recommend using a reflex test with alternative chromosome 17 probes (Ch17Ps) to resolve equivocal HER2 results. This study sought to determine the clinical utility of alternative Ch17Ps in equivocal cases and the effects of equivocal results and/or a change in the HER2 status on patients' outcomes...
April 1, 2017: Cancer
https://www.readbyqxmd.com/read/27864894/maternal-dietary-intake-in-pregnancy-and-lactation-and-allergic-disease-outcomes-in-offspring
#17
REVIEW
Carina Venter, Kari R Brown, Kate Maslin, Debra J Palmer
As the prevalence of allergic disease dramatically rises worldwide, prevention strategies are increasingly being considered. Given the potential modulatory effect of nutritional factors on disease, altering maternal diet during pregnancy and/or lactation has been considered in preventing allergic disease in offspring. Although there are a number of observational studies that have examined possible associations between maternal diet and allergic outcomes in offspring, interventional trials are limited. Furthermore, there is a paucity of studies that have prospectively studied maternal dietary intake as well as measuring maternal and infant biologic samples (blood, urine, breast milk) and their relation to allergic outcomes in infants...
March 2017: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/27861897/genome-evolution-in-ductal-carcinoma-in-situ-invasion-of-the-clones
#18
REVIEW
Anna K Casasent, Mary Edgerton, Nicholas E Navin
Ductal carcinoma in situ (DCIS) is the most frequently diagnosed early-stage breast cancer. Only a subset of patients progress to invasive ductal carcinoma (IDC), and this presents a formidable clinical challenge for determining which patients to treat aggressively and which patients to monitor without therapeutic intervention. Understanding the molecular and genomic basis of invasion has been difficult to study in DCIS cancers due to several technical obstacles, including low tumour cellularity, lack of fresh-frozen tissues, and intratumour heterogeneity...
January 2017: Journal of Pathology
https://www.readbyqxmd.com/read/27835607/p16-overexpression-and-9p21-deletion-are-linked-to-unfavorable-tumor-phenotype-in-breast-cancer
#19
Patrick Lebok, Magdalena Roming, Martina Kluth, Christina Koop, Cansu Özden, Berivan Taskin, Khakan Hussein, Annette Lebeau, Isabell Witzel, Linn Wölber, Stefan Geist, Peter Paluchowski, Christian Wilke, Uwe Heilenkötter, Volkmar Müller, Barbara Schmalfeldt, Ronald Simon, Guido Sauter, Luigi Terracciano, Rainer Horst Krech, Albert von der Assen, Eike Burandt
Overexpression of the p16 tumor suppressor, but also deletion of its gene locus 9p21, is linked to unfavorable tumor phenotype and poor prognosis in breast cancer. To better understand these contradictory observations, and to clarify the prognostic impact of p16 expression and 9p21 deletion, a tissue microarray (TMA) with 2,197 breast cancers was analyzed by fluorescence in-situ hybridization and immunohistochemistry (FISH) for 9p21 deletion and p16 expression. p16 immunostaining was weak in 25.6%, moderate in 7...
December 6, 2016: Oncotarget
https://www.readbyqxmd.com/read/27785012/docosahexaenoic-acid-liposomes-for-targeting-chronic-inflammatory-diseases-and-cancer-an-in-vitro-assessment
#20
Amr Alaarg, Nan Yeun Jordan, Johan Jf Verhoef, Josbert M Metselaar, Gert Storm, Robbert J Kok
Inflammation, oxidative stress, and uncontrolled cell proliferation are common key features of chronic inflammatory diseases, such as atherosclerosis and cancer. ω3 polyunsaturated fatty acids (PUFAs; also known as omega3 fatty acids or fish oil) have beneficial effects against inflammation upon dietary consumption. However, these effects cannot be fully exploited unless diets are enriched with high concentrations of fish oil supplements over long periods of time. Here, a nanomedicine-based approach is presented for delivering effective levels of PUFAs to inflammatory cells...
2016: International Journal of Nanomedicine
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