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breast cancer progesterone

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https://www.readbyqxmd.com/read/29471352/delay-to-formalin-fixation-cold-ischemia-time-effect-on-breast-cancer-molecules
#1
Thaer Khoury
Objectives: The gold standard of examining breast biomarkers, including estrogen receptor (ER)/progesterone receptor (PR)/human epidermal growth factor receptor 2 (HER2)/Ki-67, is to perform these assays on formalin-fixed, paraffin-embedded tissue. However, preanalytical variables may confound these assays. One of these factors is delay to formalin fixation (DFF). The purpose of this review is to evaluate each study that investigated the effect of DFF on breast biomarkers and other molecules...
February 19, 2018: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29468485/characterization-of-a-novel-breast-cancer-cell-line-derived-from-a-metastatic-bone-lesion-of-a-breast-cancer-patient
#2
Julie Johnson, Darrell C Bessette, Jodi M Saunus, Chanel E Smart, Sarah Song, Rebecca L Johnston, Sibylle Cocciardi, Esdy N Rozali, Cameron N Johnstone, Ana Christina Vargas, Stephen H Kazakoff, Victorian Cancer BioBank, Kum Kum Khanna, Sunil R Lakhani, Georgia Chenevix-Trench, Peter T Simpson, Katia Nones, Nicola Waddell, Fares Al-Ejeh
PURPOSE: We aimed to generate and characterize a novel cell line from a breast cancer bone metastasis to better study the progression of the disease. METHODS: The cell line, P7731, was derived from a metastatic bone lesion of a breast cancer patient and assessed for marker expression. P7731 was analyzed for DNA copy number variation, somatic mutations, and gene expression and was compared with the primary tumor. RESULTS: P7731 cells are negative for estrogen receptor alpha (ERα), progesterone receptor (PR), and HER2 (triple-negative); strongly express vimentin (100% of cells positive) and also express cytokeratins 8/18 and 19 but at lower frequencies...
February 21, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29467480/adenoid-cystic-carcinomas-of-the-salivary-gland-lacrimal-gland-and-breast-are-morphologically-and-genetically-similar-but-have-distinct-microrna-expression-profiles
#3
Simon Andreasen, Qihua Tan, Tina Klitmøller Agander, Petr Steiner, Kristine Bjørndal, Estrid Høgdall, Stine Rosenkilde Larsen, Daiva Erentaite, Caroline Holkmann Olsen, Benedicte Parm Ulhøi, Sarah Linéa von Holstein, Irene Wessel, Steffen Heegaard, Preben Homøe
Adenoid cystic carcinoma is among the most frequent malignancies in the salivary and lacrimal glands and has a grave prognosis characterized by frequent local recurrences, distant metastases, and tumor-related mortality. Conversely, adenoid cystic carcinoma of the breast is a rare type of triple-negative (estrogen and progesterone receptor, HER2) and basal-like carcinoma, which in contrast to other triple-negative and basal-like breast carcinomas has a very favorable prognosis. Irrespective of site, adenoid cystic carcinoma is characterized by gene fusions involving MYB, MYBL1, and NFIB, and the reason for the different clinical outcomes is unknown...
February 21, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29465777/expression-of-mage-a-and-ny-eso-1-cancer-testis-antigens-is-enriched-in-triple-negative-invasive-breast-cancers
#4
Ashwini Raghavendra, Priyakshi Kalita-de Croft, Ana Cristina Vargas, Chanel E Smart, Peter T Simpson, Jodi M Saunus, Sunil R Lakhani
AIMS: A better understanding of the expression of cancer testis antigens (CTA) in breast cancer might identify new immunotherapy options, especially for triple-negative (TN) tumours, which lack expression of conventional therapeutic targets ER, PR and HER2 (receptors for Oestrogen, Progesterone and Human epidermal growth factor). The aim of this study was to quantify the expression of MAGE-A and NY-ESO-1 CTAs in breast cancer, and relate this to known clinicopathologic parameters. METHODS AND RESULTS: We surveyed MAGE-A and NY-ESO-1 protein expression in an unselected cohort of 367 breast tumours (out of which 65 tumours were TN), with accompanying clinical follow-up data, using immunohistochemistry (IHC) analysis of tissue microarrays...
February 21, 2018: Histopathology
https://www.readbyqxmd.com/read/29463223/breast-cancer-subtype-discordance-impact-on-post-recurrence-survival-and-potential-treatment-options
#5
Peter F McAnena, James Al Brown, A Ramli, C Curran, C Malone, R McLaughlin, K Barry, Brown Jal, M J Kerin
BACKGROUND: Recent studies have shown that breast cancer subtype can change from the primary tumour to the recurrence. Discordance between primary and recurrent breast cancer has implications for further treatment and ultimately prognosis. The aim of the study was to determine the rate of change between primary and recurrence of breast cancer and to assess the impact of these changes on survival and potential treatment options. METHODS: Patient demographics were collected on those who underwent surgery for breast cancer between 2001 and 2014 and had a recurrence with biopsy results and pathology scoring of both the primary and recurrence...
February 20, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29456471/neoadjuvant-chemotherapy-exerts-selection-pressure-towards-luminal-phenotype-breast-cancer
#6
Giulia Galli, Giacomo Bregni, Stefano Cavalieri, Luca Porcu, Paolo Baili, Amash Hade, Francesca Di Salvo, Milena Sant, Roberto Agresti, Massimiliano Gennaro, Secondo Folli, Maria C De Santis, Biagio Paolini, Maria L Carcangiu, Filippo de Braud, Serena Di Cosimo
Background: Breast cancer (BC) phenotype after neoadjuvant chemotherapy (NAC) has not been extensively described and few data exist on whether expression of the primary tumor hormone receptors, HER2 and Ki-67 changes as a result of chemotherapy. Materials and Methods: We analyzed specimens from all BC patients treated with anthracycline/taxane-based NAC at our Institution between January 2010 and March 2015 (n = 325). The expression of estrogen receptor (ER), progesterone receptor (PR), HER2 and Ki-67 was determined in pre- and post-NAC specimens...
December 2017: Breast Care
https://www.readbyqxmd.com/read/29453736/reproductive-epidemiology-of-glial-tumors-may-reveal-novel-treatments-high-dose-progestins-or-progesterone-antagonists-as-endocrino-immune-modifiers-against-glioma
#7
REVIEW
Meric A Altinoz, Aysel Ozpinar, Ilhan Elmaci
Female gender, contraceptives, and menopausal hormone replacement treatments containing progesterone analogues associate with higher risk of meningiomas yet with lower risk of gliomas. Progesterone receptor (PR) expression and mifepristone treatment was highly discussed for meningiomas. However, much less is known in regard to progesterone actions in gliomas despite PR expression strongly correlates with their grade. Meningiomas and gliomas may grow faster during gestation; but paradoxically, parousity reduces lifetime risk of gliomas which can be explained with dichotomous cell growth-stimulating and inhibitory actions of progesterone at low versus high levels...
February 17, 2018: Neurosurgical Review
https://www.readbyqxmd.com/read/29450827/progression-free-survival-results-in-postmenopausal-asian-women-subgroup-analysis-from-a-phase-iii-randomized-trial-of-fulvestrant-500-mg-vs-anastrozole-1-mg-for-hormone-receptor-positive-advanced-breast-cancer-falcon
#8
Shinzaburo Noguchi, Matthew J Ellis, John F R Robertson, Jackie Thirlwell, Mehdi Fazal, Zhimin Shao
BACKGROUND: The international, phase III FALCON study (NCT01602380) in postmenopausal patients with hormone receptor-positive, locally advanced/metastatic breast cancer (LA/MBC) who had not received prior endocrine therapy, demonstrated statistically significant improvement in progression-free survival (PFS) for patients who received fulvestrant 500 mg vs anastrozole 1 mg. This subgroup analysis evaluated PFS in Asian (randomized in China, Japan, or Taiwan) and non-Asian patients from the FALCON study...
February 15, 2018: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/29444670/breast-cancer-in-ethiopia-evidence-for-geographic-difference-in-the-distribution-of-molecular-subtypes-in-africa
#9
Endale Hadgu, Daniel Seifu, Wondemagegnhu Tigneh, Yonas Bokretsion, Abebe Bekele, Markos Abebe, Thomas Sollie, Sofia D Merajver, Christina Karlsson, Mats G Karlsson
BACKGROUND: Breast cancer is a heterogeneous disease with several morphological and molecular subtypes. Widely accepted molecular classification system uses assessment of estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) and proliferation marker Ki67. Few studies have been conducted on the incidence and molecular types of breast cancer in Sub-Saharan Africa. Previous studies mainly from Western and Central Africa, showed breast cancer to occur at younger ages and to present with aggressive features, such as high-grade, advanced stage and triple-negative phenotype (negative for ER, PR and HER2)...
February 14, 2018: BMC Women's Health
https://www.readbyqxmd.com/read/29440915/effects-of-core-needle-biopsy-and-subsequent-neoadjuvant-chemotherapy-on-molecular-alterations-and-outcome-in-breast-cancer
#10
Lingmin Xie, Xiaolei Li, Qinchuan Wang, Jichun Zhou, Jun Shen, Lixi Luo, Yi Lu, Linbo Wang
Objectives: The aim of our study is to evaluate the effect of core needle biopsy (CNB) and subsequent neoadjuvant chemotherapy (NAC) on the expression of estrogen receptor (ER), progesterone receptor (PR), human epidermal growth hormone receptor 2 (HER2) and Ki67 in breast cancer, and the associated influencing factors. Materials and methods: In this retrospective cohort study, 143 patients with primary operable breast cancer who received NAC were included. ER, PR, HER2 and Ki67 statuses were compared between pretreatment and posttreatment residual samples...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29439832/factors-associated-with-positive-margins-in-women-undergoing-breast-conservation-surgery
#11
Brittany L Murphy, Judy C Boughey, Michael G Keeney, Amy E Glasgow, Jennifer M Racz, Gary L Keeney, Elizabeth B Habermann
OBJECTIVE: To identify factors predicting positive margins at lumpectomy prompting intraoperative reexcision in patients with breast cancer treated at a large referral center. PATIENTS AND METHODS: We reviewed all breast cancer lumpectomy cases managed at our institution from January 1, 2012, through December 31, 2013. Associations between rates of positive margin and patient and tumor factors were assessed using χ 2 tests and univariate and adjusted multivariate logistic regression, stratified by ductal carcinoma in situ (DCIS) or invasive cancer...
February 10, 2018: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/29436674/the-targeted-inhibition-of-hsp90-by-a-synthetic-small-molecule-dpide-offers-an-effective-treatment-strategy-against-tnbcs
#12
Yong Jin Oh, Sun You Park, Young Ho Seo
Triple-negative breast cancers (TNBCs) are the most aggressive and metastatic subtype of breast cancers and exhibit poor clinical outcome due to the lack of drug target receptors such as estrogen receptors (ER), progesterone receptors (PR), and human epidermal growth factor receptor 2 (Her2). The limited effectiveness of therapeutic options and the poor prognosis of TNBC patients emphasize the urgent need for identifying new therapeutic agents. In this regard, heat shock protein 90 (Hsp90) has emerged as a promising therapeutic target for the treatment of TNBCs...
February 7, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29435821/7-8-dihydroxycoumarin-exerts-antitumor-potential-on-dmba-induced-mammary-carcinogenesis-by-inhibiting-er%C3%AE-pr-egfr-and-igf1r-involvement-of-mapk1-2-jnk1-2-akt-pathway
#13
Abhishek Kumar, Priyashree Sunita, Shivesh Jha, Shakti P Pattanayak
Breast cancer (BC) is a persistent and impulsive metabolic disorder with the highest prevalence in women, worldwide. 7,12-Dimethylbenz(a)anthracene (DMBA) is a potent polyaromatic hydrocarbon (PAH)-based carcinogen producing mammary carcinomas in rats resembling the human hormone-dependent BC. 7,8-Dihydroxycoumarin (78DC) is a coumarin derivative that possesses diversified and favorable pharmacology profile to be considered in anticancer research against various malignancies. The present study was intended to investigate the antiproliferative and chemotherapeutic potentials of 78DC (20, 40, and 80 mg/kg BW) against DMBA (20 mg in olive oil)-induced mammary carcinoma Sprague-Dawley rats...
February 12, 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29435285/significance-of-lung-biopsy-for-the-definitive-diagnosis-of-lung-nodules-in-breast-cancer-patients
#14
Kazuo Matsuura, Toshiyuki Itamoto, Midori Noma, Masahiro Ohara, Etsushi Akimoto, Mihoko Doi, Takashi Nishisaka, Koji Arihiro, Takayuki Kadoya, Morihito Okada
The aim of the present study was to evaluate the significance of lung biopsy for the modification of the treatment strategy in breast cancer patients who develop lung nodules during follow-up after breast surgery. Of 53 consecutive patients who underwent lung biopsies in two institutions (Hiroshima University Hospital and Hiroshima Prefectural Hospital, Hiroshima, Japan) between 1997 and 2014, 45 underwent lung surgery and 8 underwent percutaneous or transbronchial tumor biopsy for lung nodules developing after curative surgery for breast cancer...
February 2018: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29435103/progesterone-receptor-isoforms-agonists-and-antagonists-differentially-reprogram-estrogen-signaling
#15
Hari Singhal, Marianne E Greene, Allison L Zarnke, Muriel Laine, Rose Al Abosy, Ya-Fang Chang, Anna G Dembo, Kelly Schoenfelt, Raga Vadhi, Xintao Qiu, Prakash Rao, Bindu Santhamma, Hareesh B Nair, Klaus J Nickisch, Henry W Long, Lev Becker, Myles Brown, Geoffrey L Greene
Major roadblocks to developing effective progesterone receptor (PR)-targeted therapies in breast cancer include the lack of highly-specific PR modulators, a poor understanding of the pro- or anti-tumorigenic networks for PR isoforms and ligands, and an incomplete understanding of the cross talk between PR and estrogen receptor (ER) signaling. Through genomic analyses of xenografts treated with various clinically-relevant ER and PR-targeting drugs, we describe how the activation or inhibition of PR differentially reprograms estrogen signaling, resulting in the segregation of transcriptomes into separate PR agonist and antagonist-mediated groups...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29435039/characterization-of-mutations-in-brca1-2-and-the-relationship-with-clinic-pathological-features-of-breast-cancer-in-a-hereditarily-high-risk-sample-of-chinese-population
#16
Min Fang, Li Zhu, Hengyu Li, Xizhou Li, Yanmei Wu, Kainan Wu, Jian Lin, Yuan Sheng, Yue Yu
The database of BRCA1/2 mutations in Chinese population remains incomplete at present. Therefore, the present study aimed to report specific harmful BRCA1/2 mutations in the Chinese population and discuss the clinicopathological features in mutation carriers. BRCA1/2 germline mutation tests for 71 patients with breast cancer from a hereditarily high-risk Chinese population were performed using next-generation sequencing for identification of deleterious mutations. Furthermore, the clinicopathological features between BRCA1/2 mutation carriers and non-carriers were compared...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434968/characterization-of-circulating-tumor-cells-in-newly-diagnosed-breast-cancer
#17
Lu Xu, Songlin Jia, Hengyu Li, Yue Yu, Guoping Liu, Yanmei Wu, Xishui Liu, Chaoqian Liu, Yue Zhou, Zhenzhen Zhang, Yuan Sheng
Identification of circulating tumor cells (CTCs) by surface marker expression and ploidy analysis [immunostaining-fluorescence in situ hybridization (iFISH)] has been shown to be a highly sensitive method in the identification of certain solid cancers. In the present study, iFISH analysis was performed to identify CTCs in 184 patients with newly diagnosed non-metastatic breast cancer, and the distribution of CTC subtypes was characterized based on cytokeratin (CK) expression and ploidy status. It was revealed that CTCs of non-metastatic, aneuploid breast cancers, independent of CK expression profile, can be detected with high sensitivity (90...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434878/progesterone-impairs-herceptin-effect-on-breast-cancer-cells
#18
Kamila Kitowska, Agnieszka Kowalska, Magdalena Mieszkowska, Dominika Piasecka, Andrzej C Skladanowski, Hanna M Romanska, Rafal Sadej
Breast cancer (BCa) is the most common cancer affecting women worldwide. Overexpression of human epidermal growth factor receptor 2 (HER2) occurs in ~20-25% of invasive ductal breast carcinomas and is associated with the more aggressive phenotype. Herceptin, a humanized antibody against HER2, is a standard therapy in HER2-overexpressing cases. Approximately one-third of patients relapse despite treatment. Therefore numerous studies have investigated the molecular mechanisms associated with Herceptin resistance...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434058/improving-accuracy-of-breast-cancer-biomarker-testing-in-india
#19
REVIEW
Tanuja Shet
There is a global mandate even in countries with low resources to improve the accuracy of testing biomarkers in breast cancer viz. oestrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2neu) given their critical impact in the management of patients. The steps taken include compulsory participation in an external quality assurance (EQA) programme, centralized testing, and regular performance audits for laboratories. This review addresses the status of ER/PR and HER2neu testing in India and possible reasons for the delay in development of guidelines and mandate for testing in the country...
October 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/29426294/factors-associated-with-breast-cancer-recurrences-or-mortality-and-dynamic-prediction-of-death-using-history-of-cancer-recurrences-the-french-e3n-cohort
#20
Alexandre Lafourcade, Mathilde His, Laura Baglietto, Marie-Christine Boutron-Ruault, Laure Dossus, Virginie Rondeau
BACKGROUND: In addition to tumor characteristics and lifestyle factors, cancer relapses are often related to the risk of death but have not been jointly studied. We investigate the prognostic factors of recurrent events and death after a diagnosis of breast cancer and predict individual deaths including a history of recurrences. METHODS: The E3N (Etude Epidémiologique auprès de Femmes de la Mutuelle Générale de l'Education Nationale) study is a prospective cohort study that was initiated in 1990 to investigate factors associated with the most common types of cancer...
February 9, 2018: BMC Cancer
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