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Breast Cancer Research: BCR

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https://www.readbyqxmd.com/read/27931260/prediction-of-breast-cancer-risk-based-on-common-genetic-variants-in-women-of-east-asian-ancestry
#1
Wanqing Wen, Xiao-Ou Shu, Xingyi Guo, Qiuyin Cai, Jirong Long, Manjeet K Bolla, Kyriaki Michailidou, Joe Dennis, Qin Wang, Yu-Tang Gao, Ying Zheng, Alison M Dunning, Montserrat García-Closas, Paul Brennan, Shou-Tung Chen, Ji-Yeob Choi, Mikael Hartman, Hidemi Ito, Artitaya Lophatananon, Keitaro Matsuo, Hui Miao, Kenneth Muir, Suleeporn Sangrajrang, Chen-Yang Shen, Soo H Teo, Chiu-Chen Tseng, Anna H Wu, Cheng Har Yip, Jacques Simard, Paul D P Pharoah, Per Hall, Daehee Kang, Yongbing Xiang, Douglas F Easton, Wei Zheng
BACKGROUND: Approximately 100 common breast cancer susceptibility alleles have been identified in genome-wide association studies (GWAS). The utility of these variants in breast cancer risk prediction models has not been evaluated adequately in women of Asian ancestry. METHODS: We evaluated 88 breast cancer risk variants that were identified previously by GWAS in 11,760 cases and 11,612 controls of Asian ancestry. SNPs confirmed to be associated with breast cancer risk in Asian women were used to construct a polygenic risk score (PRS)...
December 8, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27931239/mcl-1-inhibition-provides-a-new-way-to-suppress-breast-cancer-metastasis-and-increase-sensitivity-to-dasatinib
#2
Adelaide I J Young, Andrew M K Law, Lesley Castillo, Sabrina Chong, Hayley D Cullen, Martin Koehler, Sebastian Herzog, Tilman Brummer, Erinna F Lee, Walter D Fairlie, Morghan C Lucas, David Herrmann, Amr Allam, Paul Timpson, D Neil Watkins, Ewan K A Millar, Sandra A O'Toole, David Gallego-Ortega, Christopher J Ormandy, Samantha R Oakes
BACKGROUND: Metastatic disease is largely resistant to therapy and accounts for almost all cancer deaths. Myeloid cell leukemia-1 (MCL-1) is an important regulator of cell survival and chemo-resistance in a wide range of malignancies, and thus its inhibition may prove to be therapeutically useful. METHODS: To examine whether targeting MCL-1 may provide an effective treatment for breast cancer, we constructed inducible models of BIMs2A expression (a specific MCL-1 inhibitor) in MDA-MB-468 (MDA-MB-468-2A) and MDA-MB-231 (MDA-MB-231-2A) cells...
December 8, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27927249/the-af-1-deficient-estrogen-receptor-er%C3%AE-46-isoform-is-frequently-expressed-in-human-breast-tumors
#3
Elodie Chantalat, Frédéric Boudou, Henrik Laurell, Gaëlle Palierne, René Houtman, Diana Melchers, Philippe Rochaix, Thomas Filleron, Alexandre Stella, Odile Burlet-Schiltz, Anne Brouchet, Gilles Flouriot, Raphaël Métivier, Jean-François Arnal, Coralie Fontaine, Françoise Lenfant
BACKGROUND: To date, all studies conducted on breast cancer diagnosis have focused on the expression of the full-length 66-kDa estrogen receptor alpha (ERα66). However, much less attention has been paid to a shorter 46-kDa isoform (ERα46), devoid of the N-terminal region containing the transactivation function AF-1. Here, we investigated the expression levels of ERα46 in breast tumors in relation to tumor grade and size, and examined the mechanism of its generation and its specificities of coregulatory binding and its functional activities...
December 7, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27923387/mammographic-texture-and-risk-of-breast-cancer-by-tumor-type-and-estrogen-receptor-status
#4
Serghei Malkov, John A Shepherd, Christopher G Scott, Rulla M Tamimi, Lin Ma, Kimberly A Bertrand, Fergus Couch, Matthew R Jensen, Amir P Mahmoudzadeh, Bo Fan, Aaron Norman, Kathleen R Brandt, V Shane Pankratz, Celine M Vachon, Karla Kerlikowske
BACKGROUND: Several studies have shown that mammographic texture features are associated with breast cancer risk independent of the contribution of breast density. Thus, texture features may provide novel information for risk stratification. We examined the association of a set of established texture features with breast cancer risk by tumor type and estrogen receptor (ER) status, accounting for breast density. METHODS: This study combines five case-control studies including 1171 breast cancer cases and 1659 controls matched for age, date of mammogram, and study...
December 6, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27912781/an-immune-stratification-reveals-a-subset-of-pd-1-lag-3-double-positive-triple-negative-breast-cancers
#5
Giulia Bottai, Carlotta Raschioni, Agnese Losurdo, Luca Di Tommaso, Corrado Tinterri, Rosalba Torrisi, Jorge S Reis-Filho, Massimo Roncalli, Christos Sotiriou, Armando Santoro, Alberto Mantovani, Sherene Loi, Libero Santarpia
BACKGROUND: Stromal tumor-infiltrating lymphocytes (TILs) are a robust prognostic factor in triple-negative breast cancer (TNBC). However, the clinical significance of TILs may be influenced by the complex landscape of the tumor immune microenvironment. In this study, we aimed to evaluate the composition and the functionality of lymphocytic infiltration and checkpoint receptors in TNBC. METHODS: Formalin-fixed, paraffin-embedded tissues were retrospectively collected from a cohort of patients with early-stage TNBC treated with adjuvant anthracycline-based chemotherapy (n = 259)...
December 3, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27906047/propranolol-and-survival-from-breast-cancer-a-pooled-analysis-of-european-breast-cancer-cohorts
#6
Chris R Cardwell, Anton Pottegård, Evelien Vaes, Hans Garmo, Liam J Murray, Chris Brown, Pauline A J Vissers, Michael O'Rorke, Kala Visvanathan, Deirdre Cronin-Fenton, Harlinde De Schutter, Mats Lambe, Des G Powe, Myrthe P P van Herk-Sukel, Anna Gavin, Søren Friis, Linda Sharp, Kathleen Bennett
BACKGROUND: Preclinical studies have demonstrated that propranolol inhibits several pathways involved in breast cancer progression and metastasis. We investigated whether breast cancer patients who used propranolol, or other non-selective beta-blockers, had reduced breast cancer-specific or all-cause mortality in eight European cohorts. METHODS: Incident breast cancer patients were identified from eight cancer registries and compiled through the European Cancer Pharmacoepidemiology Network...
December 1, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27906044/high-mammographic-breast-density-predicts-locoregional-recurrence-after-modified-radical-mastectomy-for-invasive-breast-cancer-a-case-control-study
#7
Yu-Sen Huang, Jenny Ling-Yu Chen, Chiun-Sheng Huang, Sung-Hsin Kuo, Fu-Shan Jaw, Yao-Hui Tseng, Wei-Chun Ko, Yeun-Chung Chang
BACKGROUND: We aimed to evaluate the influence of mammographic breast density at diagnosis on the risk of cancer recurrence and survival outcomes in patients with invasive breast cancer after modified radical mastectomy. METHODS: This case-control study included 121 case-control pairs of women diagnosed with invasive breast cancer between 2004 and 2009, and who had undergone modified radical mastectomy and had mammographic breast density measured before or at diagnosis...
December 1, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27903276/accurate-prediction-of-response-to-endocrine-therapy-in-breast-cancer-patients-current-and-future-biomarkers
#8
REVIEW
Cigdem Selli, J Michael Dixon, Andrew H Sims
Approximately 70% of patients have breast cancers that are oestrogen receptor alpha positive (ER+) and are therefore candidates for endocrine treatment. Many of these patients relapse in the years during or following completion of adjuvant endocrine therapy. Thus, many ER+ cancers have primary resistance or develop resistance to endocrine therapy during treatment. Recent improvements in our understanding of how tumours evolve during treatment with endocrine agents have identified both changes in gene expression and mutational profiles, in the primary cancer as well as in circulating tumour cells...
December 1, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27894324/erratum-to-expression-and-methylation-patterns-partition-luminal-a-breast-tumors-into-distinct-prognostic-subgroups
#9
Dvir Netanely, Ayelet Avraham, Adit Ben-Baruch, Ella Evron, Ron Shamir
No abstract text is available yet for this article.
November 28, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27887657/complexity-galore-3d-cultures-biomechanics-and-systems-medicine-at-the-eighth-enbdc-workshop-methods-in-mammary-gland-development-and-cancer
#10
Bethan Lloyd-Lewis, Anoeska A A van de Moosdijk, Mohamed Bentires-Alj, Robert B Clarke, Renée van Amerongen
The ENBDC workshop "Methods in Mammary Gland Development and Cancer" is an established international forum to showcase the latest technical advances in the field. The eighth meeting focused on emerging concepts and technologies for studying normal and neoplastic breast development.
November 25, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27887631/the-complexities-and-caveats-of-lineage-tracing-in-the-mammary-gland
#11
LETTER
Anne C Rios, Nai Yang Fu, Joseph Cursons, Geoffrey J Lindeman, Jane E Visvader
Lineage tracing is increasingly being utilised to probe different cell types that exist within the mammary gland. Whilst this technique is powerful for tracking cells in vivo and dissecting the roles of different cellular subsets in development, homeostasis and oncogenesis, there are important caveats associated with lineage tracing strategies. Here we highlight key parameters of particular relevance for the mammary gland. These include tissue preparation for whole-mount imaging, whereby the inclusion of enzymatic digestion can drastically alter tissue architecture and cell morphology, and therefore should be avoided...
November 25, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27871311/erratum-to-jmjd2a-contributes-to-breast-cancer-progression-through-transcriptional-repression-of-the-tumor-suppressor-arhi
#12
Li-Liang Li, Ai-Min Xue, Bei-Xu Li, Yi-Wen Shen, Yu-Hua Li, Cheng-Liang Luo, Ming-Chang Zhang, Jie-Qing Jiang, Zu-De Xu, Jian-Hui Xie, Zi-Qin Zhao
No abstract text is available yet for this article.
November 21, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27852327/ada3-regulates-normal-and-tumor-mammary-epithelial-cell-proliferation-through-c-myc
#13
Nicolas I Griffin, Gayatri Sharma, Xiangshan Zhao, Sameer Mirza, Shashank Srivastava, Bhavana J Dave, Mohammed Aleskandarany, Emad Rakha, Shakur Mohibi, Hamid Band, Vimla Band
BACKGROUND: We have established the critical role of ADA3 as a coactivator of estrogen receptor (ER), as well as its role in cell cycle progression. Furthermore, we showed that ADA3 is predominantly nuclear in mammary epithelium, and in ER+, but is cytoplasmic in ER- breast cancers, the latter correlating with poor survival. However, the role of nuclear ADA3 in human mammary epithelial cells (hMECs), and in ER+ breast cancer cells, as well as the importance of ADA3 expression in relation to patient prognosis and survival in ER+ breast cancer have remained uncharacterized...
November 16, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27836010/inheritance-of-deleterious-mutations-at-both-brca1-and-brca2-in-an-international-sample-of-32-295-women
#14
Timothy R Rebbeck, Tara M Friebel, Nandita Mitra, Fei Wan, Stephanie Chen, Irene L Andrulis, Paraskevi Apostolou, Norbert Arnold, Banu K Arun, Daniel Barrowdale, Javier Benitez, Raanan Berger, Pascaline Berthet, Ake Borg, Saundra S Buys, Trinidad Caldes, Jonathan Carter, Jocelyne Chiquette, Kathleen B M Claes, Fergus J Couch, Cezary Cybulski, Mary B Daly, Miguel de la Hoya, Orland Diez, Susan M Domchek, Katherine L Nathanson, Katarzyna Durda, Steve Ellis, D Gareth Evans, Lenka Foretova, Eitan Friedman, Debra Frost, Patricia A Ganz, Judy Garber, Gord Glendon, Andrew K Godwin, Mark H Greene, Jacek Gronwald, Eric Hahnen, Emily Hallberg, Ute Hamann, Thomas V O Hansen, Evgeny N Imyanitov, Claudine Isaacs, Anna Jakubowska, Ramunas Janavicius, Katarzyna Jaworska-Bieniek, Esther M John, Beth Y Karlan, Bella Kaufman, KConFab Investigators, Ava Kwong, Yael Laitman, Christine Lasset, Conxi Lazaro, Jenny Lester, Niklas Loman, Jan Lubinski, Siranoush Manoukian, Gillian Mitchell, Marco Montagna, Susan L Neuhausen, Heli Nevanlinna, Dieter Niederacher, Robert L Nussbaum, Kenneth Offit, Edith Olah, Olufunmilayo I Olopade, Sue Kyung Park, Marion Piedmonte, Paolo Radice, Christine Rappaport-Fuerhauser, Matti A Rookus, Caroline Seynaeve, Jacques Simard, Christian F Singer, Penny Soucy, Melissa Southey, Dominique Stoppa-Lyonnet, Grzegorz Sukiennicki, Csilla I Szabo, Mariella Tancredi, Manuel R Teixeira, Soo-Hwang Teo, Mary Beth Terry, Mads Thomassen, Laima Tihomirova, Marc Tischkowitz, Amanda Ewart Toland, Aleksandra Toloczko-Grabarek, Nadine Tung, Elizabeth J van Rensburg, Danylo Villano, Shan Wang-Gohrke, Barbara Wappenschmidt, Jeffrey N Weitzel, Jamal Zidan, Kristin K Zorn, Lesley McGuffog, Douglas Easton, Georgia Chenevix-Trench, Antonis C Antoniou, Susan J Ramus
BACKGROUND: Most BRCA1 or BRCA2 mutation carriers have inherited a single (heterozygous) mutation. Transheterozygotes (TH) who have inherited deleterious mutations in both BRCA1 and BRCA2 are rare, and the consequences of transheterozygosity are poorly understood. METHODS: From 32,295 female BRCA1/2 mutation carriers, we identified 93 TH (0.3 %). "Cases" were defined as TH, and "controls" were single mutations at BRCA1 (SH1) or BRCA2 (SH2). Matched SH1 "controls" carried a BRCA1 mutation found in the TH "case"...
November 11, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27829436/the-palb2-p-leu939trp-mutation-is-not-associated-with-breast-cancer-risk
#15
LETTER
Irene Catucci, Paolo Radice, Roger L Milne, Fergus J Couch, Melissa C Southey, Paolo Peterlongo
No abstract text is available yet for this article.
November 9, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27825388/impact-of-cyp19a1-and-esr1-variants-on-early-onset-side-effects-during-combined-endocrine-therapy-in-the-text-trial
#16
Harriet Johansson, Kathryn P Gray, Olivia Pagani, Meredith M Regan, Giuseppe Viale, Valentina Aristarco, Debora Macis, Antonella Puccio, Susanne Roux, Rudolf Maibach, Marco Colleoni, Manuela Rabaglio, Karen N Price, Alan S Coates, Richard D Gelber, Aron Goldhirsch, Roswitha Kammler, Bernardo Bonanni, Barbara A Walley
BACKGROUND: Single nucleotide polymorphisms (SNPs) in the estrogen receptor 1 (ESR1) and cytochrome P450 19A1 (CYP19A1) genes have been associated with breast cancer risk, endocrine therapy response and side effects, mainly in postmenopausal women with early breast cancer. This analysis aimed to assess the association of selected germline CYP19A1 and ESR1 SNPs with early-onset hot flashes, sweating and musculoskeletal symptoms in premenopausal patients enrolled in the Tamoxifen and Exemestane Trial (TEXT)...
November 8, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27814745/deep-targeted-sequencing-of-12-breast-cancer-susceptibility-regions-in-4611-women-across-four-different-ethnicities
#17
Sara Lindström, Akweley Ablorh, Brad Chapman, Alexander Gusev, Gary Chen, Constance Turman, A Heather Eliassen, Alkes L Price, Brian E Henderson, Loic Le Marchand, Oliver Hofmann, Christopher A Haiman, Peter Kraft
BACKGROUND: Although genome-wide association studies (GWASs) have identified thousands of disease susceptibility regions, the underlying causal mechanism in these regions is not fully known. It is likely that the GWAS signal originates from one or many as yet unidentified causal variants. METHODS: Using next-generation sequencing, we characterized 12 breast cancer susceptibility regions identified by GWASs in 2288 breast cancer cases and 2323 controls across four populations of African American, European, Japanese, and Hispanic ancestry...
November 5, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27809866/evidence-of-two-distinct-functionally-specialized-fibroblast-lineages-in-breast-stroma
#18
Mikkel Morsing, Marie Christine Klitgaard, Abbas Jafari, René Villadsen, Moustapha Kassem, Ole William Petersen, Lone Rønnov-Jessen
BACKGROUND: The terminal duct lobular unit (TDLU) is the most dynamic structure in the human breast and the putative site of origin of human breast cancer. Although stromal cells contribute to a specialized microenvironment in many organs, this component remains largely understudied in the human breast. We here demonstrate the impact on epithelium of two lineages of breast stromal fibroblasts, one of which accumulates in the TDLU while the other resides outside the TDLU in the interlobular stroma...
November 3, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27776557/mammographically-dense-human-breast-tissue-stimulates-mcf10dcis-com-progression-to-invasive-lesions-and-metastasis
#19
Cecilia W Huo, Mark Waltham, Christine Khoo, Stephen B Fox, Prue Hill, Shou Chen, Grace L Chew, John T Price, Chau H Nguyen, Elizabeth D Williams, Michael Henderson, Erik W Thompson, Kara L Britt
BACKGROUND: High mammographic density (HMD) not only confers a significantly increased risk of breast cancer (BC) but also is associated with BCs of more advanced stages. However, it is unclear whether BC progression and metastasis are stimulated by HMD. We investigated whether patient-derived HMD breast tissue could stimulate the progression of MCF10DCIS.com cells compared with patient-matched low mammographic density (LMD) tissue. METHODS: Sterile breast specimens were obtained immediately after prophylactic mastectomy from high-risk women (n = 10)...
October 25, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27756439/prognostic-value-of-automated-ki67-scoring-in-breast-cancer-a-centralised-evaluation-of-8088-patients-from-10-study-groups
#20
Mustapha Abubakar, Nick Orr, Frances Daley, Penny Coulson, H Raza Ali, Fiona Blows, Javier Benitez, Roger Milne, Herman Brenner, Christa Stegmaier, Arto Mannermaa, Jenny Chang-Claude, Anja Rudolph, Peter Sinn, Fergus J Couch, Peter Devilee, Rob A E M Tollenaar, Caroline Seynaeve, Jonine Figueroa, Mark E Sherman, Jolanta Lissowska, Stephen Hewitt, Diana Eccles, Maartje J Hooning, Antoinette Hollestelle, John W M Martens, Carolien H M van Deurzen, kConFab Investigators, Manjeet K Bolla, Qin Wang, Michael Jones, Minouk Schoemaker, Jelle Wesseling, Flora E van Leeuwen, Laura Van 't Veer, Douglas Easton, Anthony J Swerdlow, Mitch Dowsett, Paul D Pharoah, Marjanka K Schmidt, Montserrat Garcia-Closas
BACKGROUND: The value of KI67 in breast cancer prognostication has been questioned due to concerns on the analytical validity of visual KI67 assessment and methodological limitations of published studies. Here, we investigate the prognostic value of automated KI67 scoring in a large, multicentre study, and compare this with pathologists' visual scores available in a subset of patients. METHODS: We utilised 143 tissue microarrays containing 15,313 tumour tissue cores from 8088 breast cancer patients in 10 collaborating studies...
October 18, 2016: Breast Cancer Research: BCR
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