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Ki67 breast cancer

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https://www.readbyqxmd.com/read/29774321/sentinel-lymph-node-metastasis-in-invasive-lobular-carcinoma-of-the-breast
#1
Hikmet Erhan Güven, Mahmut Onur Kültüroğlu, Mehmet Ali Gülçelik, Cihangir Özaslan
Objective: Invasive lobular carcinoma (ILC) of the breast makes up 5 to 15 percent of all invasive breast cancers. It has distinctive clinical and histopathological features when compared to invasive ductal carcinoma (IDC). This study intends to describe factors influencing sentinel lymph node (SLN) positivity in patients with "pure" ILC. Materials and Methods: Data of 105 patients, who were treated at a tertiary oncology center, with lobular carcinoma of the breast that were subjected to SLN biopsy was probed retrospectively...
April 2018: European Journal of Breast Health
https://www.readbyqxmd.com/read/29772837/conventional-pathology-versus-gene-signatures-for-assessing-luminal-a-and-b-type-breast-cancers-results-of-a-prospective-cohort-study
#2
Julia E C van Steenhoven, Anne Kuijer, Paul J van Diest, Joost M van Gorp, Marieke Straver, Sjoerd G Elias, Jelle Wesseling, Emiel Rutgers, Johanna N H Timmer-Bonte, Peter Nieboer, Tineke J Smilde, Alex Imholz, Charlotte F J M Blanken, Sabine Siesling, Thijs van Dalen
In this study, in estrogen receptor positive (ER+) early stage breast cancer patients who were considered candidates for 70-gene signature (70-GS, "MammaPrint") use, we compared molecular subtyping (MS) based on the previously validated 80-gene signature (80-GS, "BluePrint") versus surrogate pathological subtyping (PS). Between 1 January 2013 and 31 December 2015, 595 clinical intermediate risk ER+ early stage breast cancer patients were enrolled. Hormone receptor (HR) and HER2 receptor status were determined by conventional pathology using immunohistochemistry (IHC) and fluorescent in situ hybridization (FISH)...
May 17, 2018: Genes
https://www.readbyqxmd.com/read/29770779/effect-of-neoadjuvant-chemotherapy-on-the-expression-of-hormone-receptors-and-ki-67-in-chinese-breast-cancer-patients-a-retrospective-study-of-525-patients
#3
Yu-Tuan Wu, Xin Li, Lin-Jie Lu, Lu Gan, Wei Dai, Yan-Ling Shi, Vishnu Prasad Adhikari, Kai-Nan Wu, Ling-Quan Kong
This study was designed to investigate the effect of neoadjuvant chemotherapy on the expression of hormone receptors and ki67 in Chinese female breast cancer patients. The expression of estrogen receptor (ER), progesterone receptor (PR) and Ki67 among 525 neoadjuvant chemotherapy cases was studied by immunohistochemistry (IHC). Differences between specimens made through preoperative core needle biopsy (CB) and excised tissue biopsy (EB) were observed. The positive rates of ER, PR and Ki67 in CB and EB were 65...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29753185/us-guided-diffuse-optical-tomography-clinicopathological-features-affect-total-hemoglobin-concentration-in-breast-cancer
#4
Wenxiang Zhi, Yu Wang, Cai Chang, Fen Wang, Yaling Chen, Na Hu, Xiaoli Zhu, Li Xie
PURPOSE: To investigate breast cancers total hemoglobin concentration (THC) characteristics and its association with clinical pathologic findings. MATERIALS AND METHODS: The study was approved by the institutional review board and all patients provided written informed consent. 447 breast cancer patients, totally 455 lesions were included in our study. The size and THC of breast lesions were measured by conventional ultrasound (US) and US-guided Diffuse Optical Tomography (DOT) 1-2 days before surgery...
May 9, 2018: Translational Oncology
https://www.readbyqxmd.com/read/29742125/optimized-generation-of-high-resolution-phantom-images-using-cgan-application-to-quantification-of-ki67-breast-cancer-images
#5
Caglar Senaras, Muhammad Khalid Khan Niazi, Berkman Sahiner, Michael P Pennell, Gary Tozbikian, Gerard Lozanski, Metin N Gurcan
In pathology, Immunohistochemical staining (IHC) of tissue sections is regularly used to diagnose and grade malignant tumors. Typically, IHC stain interpretation is rendered by a trained pathologist using a manual method, which consists of counting each positively- and negatively-stained cell under a microscope. The manual enumeration suffers from poor reproducibility even in the hands of expert pathologists. To facilitate this process, we propose a novel method to create artificial datasets with the known ground truth which allows us to analyze the recall, precision, accuracy, and intra- and inter-observer variability in a systematic manner, enabling us to compare different computer analysis approaches...
2018: PloS One
https://www.readbyqxmd.com/read/29731798/prognostic-significance-of-reduction-in-ki67-index-after-neoadjuvant-chemotherapy-in-patients-with-breast-cancer-in-kerman-between-2009-and-2014
#6
Vahid Moazed, Elham Jafari, Behjat Kalantari Khandani, Ali Nemati, Alale Roozdar, Seyyed Amir Ben Razavi
Background and objective: Breast cancer is the most common malignancy among women. The Neoadjuvant chemotherapy is the treatment of choice for non-operable tumors. The Ki67 is a proliferation marker that can be used to predict the therapeutic response to chemotherapy and the patients' prognosis. Methods: This retrospective study was carried out on 55 consecutive patients with breast cancer referred to a Training Tertiary Healthcare Center in Kerman, Iran since 2009 to 2014...
2018: Iranian Journal of Pathology
https://www.readbyqxmd.com/read/29725458/crm1-a-novel-independent-prognostic-factor-overexpressed-in-invasive-breast-carcinoma-of-poor-prognosis
#7
Lu Yue, Zhen-Ni Sun, Ya-Sai Yao, Zan Shen, Hai-Bo Wang, Xiang-Ping Liu, Fang Zhou, Jin-Yu Xiang, Ru-Yong Yao, Hai-Tao Niu
Breast cancer (BC) is the most commonly diagnosed cancer in females globally and is more aggressive at later stages. Chromosome region maintenance 1 (CRM1) is involved in the nuclear export of proteins and RNAs and has been associated with a number of malignancies. However, the clinicopathological significance of its expression in BC remains to be elucidated therefore this was investigated in the present study. CRM1 expression in 280 breast cancer tissues and 60 normal tissues was retrospectively analyzed using immunohistochemistry (IHC) and western blotting...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29718092/updated-results-from-monaleesa-2-a-phase-iii-trial-of-first-line-ribociclib-plus-letrozole-versus-placebo-plus-letrozole-in-hormone-receptor-positive-her2-negative-advanced-breast-cancer
#8
G N Hortobagyi, S M Stemmer, H A Burris, Y S Yap, G S Sonke, S Paluch-Shimon, M Campone, K Petrakova, K L Blackwell, E P Winer, W Janni, S Verma, P Conte, C L Arteaga, D A Cameron, S Mondal, F Su, M Miller, M Elmeliegy, C Germa, J O'Shaughnessy
Background: The phase III MONALEESA-2 study demonstrated significantly prolonged progression-free survival (PFS) and a manageable toxicity profile for first-line ribociclib plus letrozole versus placebo plus letrozole in patients with hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) advanced breast cancer. Here we report updated efficacy and safety data, together with exploratory biomarker analyses, from the MONALEESA-2 study. Patients and methods: A total of 668 postmenopausal women with HR+, HER2- recurrent/metastatic breast cancer were randomized (1:1; stratified by presence/absence of liver and/or lung metastases) to ribociclib (600 mg/day; 3-weeks-on/1-week-off; 28-day treatment cycles) plus letrozole (2...
April 27, 2018: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29707121/foxm1-is-an-independent-poor-prognostic-marker-and-therapeutic-target-for-advanced-middle-eastern-breast-cancer
#9
Abdul Khalid Siraj, Poyil Pratheeshkumar, Sandeep Kumar Parvathareddy, Zeeshan Qadri, Saravanan Thangavel, Saeeda Ahmed, Fouad Al-Dayel, Asma Tulbah, Dahish Ajarim, Khawla S Al-Kuraya
Breast cancer (BC) is the most common cause of cancer-related death in females in Saudi Arabia. BC in Saudi women tend to behave more aggressively than breast cancer in the West. Therefore, identification of new molecular targets and treatment strategies are highly warranted to improve patient outcome. FoxM1 has been shown to play a critical role in pathogenesis of various malignancies. In this study, we explored the prevalence and clinical implication of FoxM1 overexpression in Saudi breast cancer. FoxM1 protein overexpression was seen in 79% (770/975) of BC tissues and was associated with aggressive clinical parameters such as younger age (< 30 yrs) ( p = 0...
April 3, 2018: Oncotarget
https://www.readbyqxmd.com/read/29697670/-comparison-of-digital-and-visual-methods-for-ki-67-assessment-in-invasive-breast-carcinomas
#10
V A Kushnarev, E S Artemyeva, A G Kudaybergenova
AIM: to compare two methods for quantitative assessment of the proliferative activity index (PAI): a visual estimation method by several investigators and digital image analysis (DIA). The use of the Ki-67 index in the daily clinical practice of a Morbid Anatomy Department is associated with the problem of reproducibility of quantitative assessment of the Ki-67 PAI. Due to the development of digital imaging techniques in morphology, new methods for PAI evaluation using the DIA are proposed...
2018: Arkhiv Patologii
https://www.readbyqxmd.com/read/29696443/relationship-between-functional-imaging-and-immunohistochemical-markers-and-prediction-of-breast-cancer-subtype-a-pet-mri-study
#11
Mariarosaria Incoronato, Anna Maria Grimaldi, Carlo Cavaliere, Marianna Inglese, Peppino Mirabelli, Serena Monti, Umberto Ferbo, Emanuele Nicolai, Andrea Soricelli, Onofrio Antonio Catalano, Marco Aiello, Marco Salvatore
PURPOSE: The aim of this study was to determine if functional parameters extracted from the hybrid positron emission tomography/magnetic resonance imaging (PET/MRI) correlate with the immunohistochemical markers of breast cancer (BC) lesions, to assess their ability to predict BC subtype. METHODS: This prospective study was approved by the institution's Ethics Committee, and all patients provided written informed consent. A total of 50 BC patients at diagnosis underwent PET/MRI before pharmacological and surgical treatment...
April 25, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29693354/proliferative-index-ki67-for-prediction-in-breast-duct-carcinomas
#12
Shatha Th Ahmed, Azad M Ahmed, Dildar H Musa, Farhad K Sulayvani, Muzahm Al-Khyatt, Intisar S Pity
Background and objectives: To date, many tumor markers have been used to predict prognosis and therapeutic response in patients with breast cancer. The well established and routinely applied tumor markers are the estrogen-receptor, progesterone-receptor and Her2/neu-receptor. In the current study, we aimed to highlight any association of the proliferation index (Ki67) in breast infiltrative duct carcinoma with the tumor grade, tumor size and nodal status in addition to hormone receptor status. Tissue sections were stained immunohistochemically for Ki67 nuclear antigen, estrogen, progesterone and Her2/neu receptors using an automated Dako machine (Dako Denmark...
April 25, 2018: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29679201/utilization-of-the-21-gene-recurrence-score-in-a-diverse-breast-cancer-patient-population-development-of-a-clinicopathologic-model-to-predict-high-risk-scores-and-response-to-neoadjuvant-chemotherapy
#13
Ko Un Park, Yalei Chen, Dhananjay Chitale, Sarah Choi, Haythem Ali, S David Nathanson, Jessica Bensenhaver, Erica Proctor, Lindsay Petersen, Randa Loutfi, Alyson Simonds, Marcia Kuklinski, Thomas Doyle, Vrushali Dabak, Kim Cole, Melissa Davis, Lisa Newman
INTRODUCTION: The 21-gene expression profile [Oncotype DX Recurrence Score (RS)] stratifies benefit from adjuvant chemotherapy in hormone receptor (HR)-positive, HER2/neu-negative, node-negative breast cancer. It is not routinely applied to predict neoadjuvant chemotherapy (NACT) response; data in diverse patient populations also are limited. We developed a statistical model based on standard clinicopathologic features to identify high-risk cases (RS > 30) and then evaluated ability of predicted high RS to predict for NACT downstaging...
April 20, 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29665447/propensity-score-to-evaluate-prognosis-in-pregnancy-associated-breast-cancer-analysis-from-a-french-cancer-network
#14
Anne-Sophie Boudy, Iptissem Naoura, Lise Selleret, Sonia Zilberman, Joseph Gligorov, Sandrine Richard, Isabelle Thomassin-Naggara, Nathalie Chabbert-Buffet, Marcos Ballester, Sofiane Bendifallah, Emile Darai
PURPOSE: To compare the prognosis of pregnancy associated breast cancer occurring during pregnancy (BCP) to non-pregnancy associated breast cancers (non-BCP) in young women managed at a national expert center. METHODS: Retrospective cohort study of a prospective database using propensity score matching (PSM) analysis with known prognostic factors. RESULTS: We analyzed data of 49 patients with BCP and 104 with non-BCP diagnosed between 2002 and 2017 at Tenon University Hospital (Paris, France)...
April 14, 2018: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/29663173/current-status-of-neoadjuvant-endocrine-therapy-in-early-stage-breast-cancer
#15
REVIEW
Tomás Reinert, Rodrigo Gonçalves, Matthew J Ellis
Neoadjuvant endocrine therapy (NET) with Ki67-based response monitoring is a practical, cost-effective approach to the management of clinical stage II and III estrogen receptor-positive (ER+) breast cancer. In addition to marked improvements in rates of breast conservation, the identification of extreme responders on the basis of the preoperative endocrine prognostic index (PEPI) provides a rationale to avoid chemotherapy on the basis of highly favorable prognosis in some patients. Finally, samples accrued from patients treated with neoadjuvant therapy are providing valuable insights into the molecular basis for intrinsic resistance to endocrine therapy and promise a more rational basis and precise approach to the systemic treatment of ER+ breast cancer...
April 16, 2018: Current Treatment Options in Oncology
https://www.readbyqxmd.com/read/29659431/preliminary-study-on-molecular-subtypes-of-breast-cancer-based-on-magnetic-resonance-imaging-texture-analysis
#16
Xinru Sun, Bing He, Xin Luo, Yuhua Li, Jinfeng Cao, Jinlan Wang, Jun Dong, Xiaoyu Sun, Guangxia Zhang
OBJECTIVE: The aim of the study was to investigate the molecular subtypes of breast cancer based on the texture features derived from magnetic resonance images (MRIs). METHODS: One hundred seven patients with preoperative confirmed breast cancer were recruited. One hundred eight breast lesions were divided into 4 subtypes according to the status of estrogen receptor, progesterone receptor, human epidermal growth factor receptor type 2, and Ki67. Fisher discriminant analysis was performed on the texture features that extracted from the enhanced high-resolution T1-weighted images and diffusion weighted images to establish the classification model of molecular subtypes...
April 13, 2018: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/29643149/involvement-of-prokineticin-2-expressing-neutrophil-infiltration-in-5-fluorouracil-induced-aggravation-of-breast-cancer-metastasis-to-lung
#17
Soichiro Sasaki, Tomohisa Baba, Hayato Muranaka, Yamato Tanabe, Chiaki Takahashi, Seiichi Matsugo, Naofumi Mukaida
Adjuvant chemotherapy is used for human breast cancer patients, even after curative surgery of primary tumor, in order to prevent tumor recurrence primarily as a form of metastasis. However, anti-cancer drugs can accelerate metastasis in several mouse metastasis models. Hence, we examined the effects of post-surgical administration with 5-fluorouracil (5-FU), doxorubicin, and cyclophosphamide, on lung metastasis process, which developed after the resection of the primary tumor arising from the orthotopic injection of a mouse triple-negative breast cancer cell line, 4T1...
April 11, 2018: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29629944/human-endometriosis-tissue-microarray-reveals-site-specific-expression-of-estrogen-receptors-progesterone-receptor-and-ki67
#18
Mariano Colón-Caraballo, Miosotis García, Adalberto Mendoza, Idhaliz Flores
Most available therapies for endometriosis are hormone-based and generally broadly used without taking into consideration the ovarian hormone receptor expression status. This contrasts strikingly with the standard of care for other hormone-based conditions such as breast cancer. We therefore aimed to characterize the expression of ovarian steroid hormone receptors for estrogen alpha (ESR1), estrogen beta (ESR2), and progesterone (PGR) in different types of endometriotic lesions and eutopic endometrium from women with endometriosis and controls using a tissue microarray (TMA)...
April 7, 2018: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/29628341/the-human-cytomegalovirus-strain-db-activates-oncogenic-pathways-in-mammary-epithelial-cells
#19
Amit Kumar, Manoj Kumar Tripathy, Sébastien Pasquereau, Fatima Al Moussawi, Wasim Abbas, Laurie Coquard, Kashif Aziz Khan, Laetitia Russo, Marie-Paule Algros, Séverine Valmary-Degano, Olivier Adotevi, Stéphanie Morot-Bizot, Georges Herbein
BACKGROUND: Human cytomegalovirus (HCMV) establishes a persistent life-long infection and increasing evidence indicates HCMV infection can modulate signaling pathways associated with oncogenesis. Breast milk is an important route of HCMV transmission in humans and we hypothesized that mammary epithelial cells could be one of the main cellular targets of HCMV infection. METHODS: The infectivity of primary human mammary epithelial cells (HMECs) was assessed following infection with the HCMV-DB strain, a clinical isolate with a marked macrophage-tropism...
March 28, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29623068/nuclear-insulin-like-growth-factor-binding-protein-3-as-a-biomarker-in-triple-negative-breast-cancer-xenograft-tumors-effect-of-targeted-therapy-and-comparison-with-chemotherapy
#20
Sohel M Julovi, Janet L Martin, Robert C Baxter
Triple-negative breast cancer (TNBC) typically has a worse outcome than other breast cancer subtypes, in part owing to a lack of approved therapeutic targets or prognostic markers. We have previously described an oncogenic pathway in basal-like TNBC cells, initiated by insulin-like growth factor binding protein-3 (IGFBP-3), in which the epidermal growth factor receptor (EGFR) is transactivated by sphingosine-1-phosphate (S1P) resulting from sphingosine kinase (SphK)-1 activation. Oncogenic IGFBP-3 signaling can be targeted by combination treatment with the S1P receptor modulator and SphK inhibitor, fingolimod, and the EGFR kinase inhibitor, gefitinib (F + G)...
2018: Frontiers in Endocrinology
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