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https://www.readbyqxmd.com/read/28098915/somatic-mutational-spectrum-analysis-in-a-prospective-series-of-104-gastrointestinal-stromal-tumors
#1
David Guenat, Olivier Deroo, Sandrine Magnin, Loïc Chaigneau, Franck Monnien, Christophe Borg, Christiane Mougin, Jean-François Emile, Jean-Luc Prétet
Gastrointestinal stromal tumors (GISTs) are mesenchymal tumors distinguished by driver mutations in proto-oncogenes KIT or PDGFRA in 85-90% of cases. These mutations have been linked to the response to imatinib, a multikinase inhibitor, and have independent prognostic impact. Here, we describe the prospective study of the molecular characteristics of 104 GISTs from French adult patients analyzed routinely through the National Hospital Program of Molecular Cancer Diagnosis. All patients with GISTs diagnosed at the University Hospital of Besançon between August 2005 and October 2014 were prospectively included in the present study...
January 17, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28097468/outcomes-of-primary-colorectal-sarcoma-a-national-cancer-data-base-ncdb-review
#2
Cornelius A Thiels, John R Bergquist, Adam C Krajewski, Hee Eun Lee, Heidi Nelson, Kellie L Mathis, Elizabeth B Habermann, Robert R Cima
INTRODUCTION: Primary colorectal sarcomas are a rare entity with anecdotally poor outcomes. We sought to inform surgeons, oncologists, and researchers of the characteristics and outcomes of these understudied and difficult-to-manage tumors. METHODS: The National Cancer Data Base (NCDB) was queried for patients with pathologically confirmed primary sarcoma of the colon or rectum (1998-2012). Gastrointestinal stromal tumors were excluded. Unadjusted overall survival was reported using the Kaplan-Meier method...
January 17, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28096828/intramural-esophageal-tumors
#3
Mariusz P Łochowski, Katarzyna Kozak, Marek Rębowski, Józef Kozak
INTRODUCTION: Intramural esophageal tumors (IET) are located between unchanged mucous membrane and muscularis mucosae. They can be both benign and malignant. AIM: To evaluate diagnostic and therapeutic difficulties of IET. MATERIAL AND METHODS: During the years 2010-2015, 11 patients with IET were treated in our clinic. Diagnostics included gastroscopy, computed tomography of the chest, endoscopic ultrasound (EUS) guided fine needle biopsy, and positron emission tomography (PET) of the esophagus in cases with no histopathological confirmation...
December 2016: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28077435/blu-285-dcc-2618-show-activity-against-gist
#4
(no author information available yet)
Tyrosine kinase inhibitors may initially control gastrointestinal stromal tumors, but most patients eventually experience disease progression due to activation loop mutations, which are resistant to approved drugs. However, phase I trials suggest that the cancer is sensitive to two new agents: BLU-285 and DCC-2618. In addition, liquid biopsies, which were used to follow patients during the trials, may be valuable tools in tracking disease progression and assessing tumor heterogeneity.
January 11, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28072616/gastrointestinal-stromal-tumor-showing-intense-tracer-uptake-on-psma-pet-ct
#5
Benjamin Noto, Matthias Weckesser, Boris Buerke, Michaela Pixberg, Nemanja Avramovic
A 70-year-old man with suspected prostate cancer was referred for Ga-PSMA-HBED-CC PET/CT (short PSMA PET/CT) for staging of tumor extent. Apart from vivid tracer uptake in the prostate gland and osseous metastasis, PSMA PET/CT revealed a large soft tissue mass with calcifications in the left upper abdomen showing intense tracer uptake. Histologic examination revealed the mass to be a gastrointestinal stromal tumor.
January 9, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28055310/gastrointestinal-stromal-tumors-gist-facing-cell-death-between-autophagy-and-apoptosis
#6
Gloria Ravegnini, Giulia Sammarini, Margherita Nannini, Maria A Pantaleo, Guido Biasco, Patrizia Hrelia, Sabrina Angelini
Autophagy and apoptosis are 2 fundamental biological mechanisms that may cooperate or be antagonistic, although both are involved in deciding the fate of cells in physiological or pathological conditions. These 2 mechanisms coexist simultaneously in cells and share common upstream signals and stimuli. Autophagy and apoptosis play pivotal roles in cancer development. Autophagy plays a key function in maintaining tumor cell survival by providing energy during unfavorable metabolic conditions through its recycling mechanism, and supporting the high energy requirement for metabolism and growth...
January 5, 2017: Autophagy
https://www.readbyqxmd.com/read/28050726/preoperative-chemotherapy-and-survival-for-large-anorectal-gastrointestinal-stromal-tumors-a-national-analysis-of-333-cases
#7
Alexander T Hawkins, Katerina O Wells, Devi Mukkai Krishnamurty, Steven R Hunt, Matthew G Mutch, Sean C Glasgow, Paul E Wise, Matthew L Silviera
PURPOSE: Anorectal gastrointestinal stromal tumors (GISTs) are exceedingly rare, and management remains controversial in regard to local resection (LR) and preoperative chemotherapy. METHODS: The National Cancer Data Base was queried from 1998 to 2012 for cases of GIST resection in the rectum or anus. Patient demographics, type of surgery (LR vs. radical excision [RE]), short-term outcomes, and overall survival (OS) were analyzed. Preoperative chemotherapy was recorded following the US FDA approval of imatinib in 2002...
January 3, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28042329/genome-wide-lncrna-microarray-profiling-identifies-novel-circulating-lncrnas-for-detection-of-gastric-cancer
#8
Kecheng Zhang, Hongzhi Shi, Hongqing Xi, Xiaosong Wu, Jianxin Cui, Yunhe Gao, Wenquan Liang, Chong Hu, Yi Liu, Jiyang Li, Ning Wang, Bo Wei, Lin Chen
Long non-coding RNAs (lncRNAs) can serve as blood-based biomarkers for cancer detection. To identify novel lncRNA biomarkers for gastric cancer (GC), we conducted, for the first time, genome-wide lncRNA screening analysis in two sets of samples: five paired preoperative and postoperative day 14 plasma samples from GC patients, and tissue samples from tumor and adjacent normal tissues. Candidate tumor-related lncRNAs were then quantitated and evaluated in three independent phases comprising 321 participants...
2017: Theranostics
https://www.readbyqxmd.com/read/28039147/incorporation-of-nlr-into-nih-stratification-system-increases-predictive-accuracy-for-surgically-resected-gastrointestinal-stromal-tumors
#9
Anwei Xue, Xiaodong Gao, Yong Fang, Ping Shu, Jiaqian Ling, Kuntang Shen, Yihong Sun, Jing Qin, Xinyu Qin, Yingyong Hou
Previous studies have reported that preoperative neutrophil-to-lymphocyte (NLR) and platelet-to-lymphocyte ratios were prognostic for various types of cancers. The aim of this study was to investigate the predictive utilities of preoperative peripheral blood counts in patients with gastrointestinal stromal tumors (GISTs). We enrolled 510 consecutive, previously untreated patients who underwent surgery for primary, localized GISTs. The relationship between recurrence-free survival and outcome variables was assessed by univariate and multivariate analyses, while the clinicopathologic relevance of NLR was determined using the Chi-square test...
December 29, 2016: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28029307/surgical-management-of-wild-type-gastrointestinal-stromal-tumors-a-report-from-the-national-institutes-of-health-pediatric-and-wildtype-gist-clinic
#10
Christopher B Weldon, Arin L Madenci, Sosipatros A Boikos, Katherine A Janeway, Suzanne George, Margaret von Mehren, Alberto S Pappo, Joshua D Schiffman, Jennifer Wright, Jonathan C Trent, Karel Pacak, Constantine A Stratakis, Lee J Helman, Michael P La Quaglia
Purpose Wild-type gastrointestinal stromal tumors (WT-GISTs) that lack KIT or PDGFRA mutations represent a unique subtype of GIST that predominantly affects children. We sought to determine the effect on event-free survival (EFS) of staging variables, extent of resection, and repeat resection of tumors. Methods In 2008, a WT-GIST clinic was established at the National Cancer Institute, allowing the development of a large clinical database. We included participants who underwent resection of WT-GIST. Associations with EFS (ie, freedom from disease progression or recurrence) were evaluated using the Kaplan-Meier method and Cox proportional hazards modeling...
December 28, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28024574/mirna-218-loaded-carboxymethyl-chitosan-tocopherol-nanoparticle-to-suppress-the-proliferation-of-gastrointestinal-stromal-tumor-growth
#11
Lin Tu, Ming Wang, Wen-Yi Zhao, Zi-Zhen Zhang, De-Feng Tang, Ye-Qian Zhang, Hui Cao, Zhi-Gang Zhang
Gastrointestinal stromal tumors (GIST) are one of the most common forms of mesenchymal cancers of the gastrointestinal tract. Although chemotherapeutic drugs inhibited the proliferation of GIST, however, sizable proportion of people developed resistance and therefore difficult to treat. In the present study, O-carboxymethyl chitosan (OCMC)-tocopherol polymer conjugate was synthesized and formulated into stable polymeric nanoparticles. The main aim of present study was to increase the therapeutic efficacy of miR-218 in GIST...
March 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28008216/understanding-genetic-breast-cancer-risk-processing-loci-of-the-brca-gist-intelligent-tutoring-system
#12
Christopher R Wolfe, Valerie F Reyna, Colin L Widmer, Elizabeth M Cedillos-Whynott, Priscila G Brust-Renck, Audrey M Weil, Xiangen Hu
The BRCA Gist Intelligent Tutoring System helps women understand and make decisions about genetic testing for breast cancer risk. BRCA Gist is guided by Fuzzy-Trace Theory, (FTT) and built using AutoTutor Lite. It responds differently to participants depending on what they say. Seven tutorial dialogues requiring explanation and argumentation are guided by three FTT concepts: forming gist explanations in one's own words, emphasizing decision-relevant information, and deliberating the consequences of decision alternatives...
July 2016: Learning and Individual Differences
https://www.readbyqxmd.com/read/27997714/genomic-and-transcriptomic-analysis-of-imatinib-resistance-in-gastrointestinal-stromal-tumors
#13
Tsuyoshi Takahashi, Asmaa Elzawahry, Sachiyo Mimaki, Eisaku Furukawa, Rie Nakatsuka, Hiromi Nakamura, Takahiko Nishigaki, Satoshi Serada, Tetsuji Naka, Seiichi Hirota, Tatsuhiro Shibata, Katsuya Tsuchihara, Toshirou Nishida, Mamoru Kato
Gastrointestinal stromal tumors represent the most common mesenchymal tumor of the digestive tract, driven by gain-of-function mutations in KIT. Despite its proven benefits, half of the patients treated with imatinib show disease progression within 2 years due to secondary resistance mutations in KIT. It remains unclear how the genomic and transcriptomic features change during the acquisition of imatinib resistance. Here, we performed exome sequencing and microarray transcription analysis for four imatinib-resistant cell lines and one cell line briefly exposed to imatinib...
December 20, 2016: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/27974047/fgfr1-and-ntrk3-actionable-alterations-in-wild-type-gastrointestinal-stromal-tumors
#14
Eileen Shi, Juliann Chmielecki, Chih-Min Tang, Kai Wang, Michael C Heinrich, Guhyun Kang, Christopher L Corless, David Hong, Katherine E Fero, James D Murphy, Paul T Fanta, Siraj M Ali, Martina De Siena, Adam M Burgoyne, Sujana Movva, Lisa Madlensky, Gregory M Heestand, Jonathan C Trent, Razelle Kurzrock, Deborah Morosini, Jeffrey S Ross, Olivier Harismendy, Jason K Sicklick
BACKGROUND: About 10-15% of adult, and most pediatric, gastrointestinal stromal tumors (GIST) lack mutations in KIT, PDGFRA, SDHx, or RAS pathway components (KRAS, BRAF, NF1). The identification of additional mutated genes in this rare subset of tumors can have important clinical benefit to identify altered biological pathways and select targeted therapies. METHODS: We performed comprehensive genomic profiling (CGP) for coding regions in more than 300 cancer-related genes of 186 GISTs to assess for their somatic alterations...
December 14, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27966954/discovery-of-4-methyl-n-4-4-methylpiperazin-1-yl-methyl-3-trifluoromethyl-phenyl-3-1-nicotinoylpiperidin-4-yl-oxy-benzamide-chmfl-abl-kit-155-as-a-novel-highly-potent-type-ii-abl-kit-dual-kinase-inhibitor-with-a-distinct-hinge-binding
#15
Qiang Wang, Feiyang Liu, Beilei Wang, Fengming Zou, Ziping Qi, Cheng Chen, Kailin Yu, Chen Hu, Shuang Qi, Wenchao Wang, Zhenquan Hu, Juan Liu, Wei Wang, Li Wang, Qianmao Liang, Shanchun Zhang, Tao Ren, Qingsong Liu, Jing Liu
The discovery of a novel potent type II ABL/c-KIT dual kinase inhibitor compound 34 (CHMFL-ABL/KIT-155), which utilized a hydrogen bond formed by NH on the kinase backbone and carbonyl oxygen of 34 as a unique hinge binding, is described. 34 potently inhibited purified ABL (IC50: 46 nM) and c-KIT kinase (IC50: 75 nM) in the biochemical assays and displayed high selectivity (S Score (1) = 0.03) at the concentration of 1 μM among 468 kinases/mutants in KINOMEscan assay. It exhibited strong antiproliferative activities against BCR-ABL/c-KIT driven CML/GISTs cancer cell lines through blockage of the BCR-ABL/c-KIT mediated signaling pathways, arresting cell cycle progression and induction of apoptosis...
December 14, 2016: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27955734/pediatric-wildtype-gastrointestinal-stromal-tumors
#16
Dhanya Mullassery, Christopher B Weldon
Pediatric/"Wildtype" gastrointestinal stromal tumor (P/WT-GIST) is a rare cancer, distinct and markedly different from the phenotype found predominantly in older patients (adult, non-wildtype GIST). Having a different molecular signature, it is not responsive to standard adjuvant therapies utilized in adult GIST, and surgery remains the only effective cure. However, even with presumed complete resections in patients with localized disease at presentation, recurrence rates are high. Furthermore, it is an indolent cancer that can persist for decades, and treatment strategies must balance the possible morbid risks of intervention with the reality of preserving quality of life in the interim...
October 2016: Seminars in Pediatric Surgery
https://www.readbyqxmd.com/read/27928801/-efficacy-observation-on-imatinib-reintroduction-in-gastrointestinal-stromal-tumor-with-high-recurrence-risk-after-imatinib-adjuvant-therapy-failure
#17
Zhi Dong, Jing Gao, Jifang Gong, Jie Li, Yan Li, Xicheng Wang, Yanyan Li, Lin Shen, Jian Li
OBJECTIVE: To evaluate the feasibility of imatinib reintroduction in gastrointestinal stromal tumor(GIST) with high recurrence risk after imatinib adjuvant therapy failure. METHODS: Clinical and follow-up data of 24 recurrent GIST patients with high recurrence risk receiving imatinib standard dose reintroduction(400 mg/d or 600 mg/d) after stopping imatinib adjuvant treatment more than 3 months in Department of GI Oncology of Peking University Cancer Hospital from August 2005 to January 2016 were retrospectively analyzed...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27928799/-impact-of-laparoscopic-surgery-on-efficacy-in-the-treatment-of-gastrointestinal-stromal-tumors-in-different-anatomical-locations
#18
Qingfeng Chen, Jianxian Lin, Chaohui Zheng, Ping Li, Jianwei Xie, Jiabin Wang, Jun Lu, Qiyue Chen, Mi Lin, Longlong Cao, Changming Huang
OBJECTIVE: To investigate the efficacy of laparoscopic surgery in the treatment of gastrointestinal stromal tumors (GIST) in different anatomical locations. METHODS: Clinical data of 133 patients with primary gastric GIST undergoing laparoscopic resection at our department from January 2006 to December 2014 were retrospectively analyzed. These patients were divided into favorable site group (F group, 90 cases), including gastric fundus, anterior wall and greater curvature of gastric body, and unfavorable site group (UF group, 43 cases),including gastroesophageal junction, posterior wall and lesser curvature of gastric body,antrum and pylorus, according to the 2014 version National Comprehensive Cancer Network Clinical Guidelines...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27928797/-changes-of-diagnosis-and-treatment-for-gastrointestinal-stromal-tumors-during-a-18-year-period-in-four-medical-centers-of-china
#19
Haibo Qiu, Peng Zhang, Xingyu Feng, Tao Chen, Xiaowei Sun, Jiang Yu, Zhijing Chen, Yong Li, Kaixiong Tao, Guoxin Li, Zhiwei Zhou
OBJECTIVE: To elucidate the historic and current diagnosis and treatment status of gastrointestinal stromal tumor (GIST) in the Chinese population based on four high volume databases. METHODS: Clinicopathological data of GIST patients with follow-up information between January 1998 and December 2015 from Sun Yat-sen University Cancer Center, Union Hospital of Huazhong University of Science and Technology, Southern Medical University Nanfang Hospital and Guangdong General Hospital were retrospectively analyzed...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27928796/-current-status-of-surgical-treatment-of-gastric-gastrointestinal-tumors-a-national-multi-center-retrospective-study
#20
Xingyu Feng, Renjie Li, Peng Zhang, Tao Chen, Haibo Qiu, Yongjian Zhou, Chunyan Du, Xiaonan Yin, Fang Pan, Guoliang Zheng, Xiaowei Sun, Jiang Yu, Zhijing Chen, Yan Zhao, Xiufeng Liu, Jian Li, Bo Zhang, Ye Zhou, Changming Huang, Zhiwei Zhou, Guoxin Li, Kaixiong Tao, Yong Li
OBJECTIVE: To retrospectively analyze the clinicopathology of patients with gastric gastrointestinal stromal tumor(gGIST) who underwent radical excision within 18 years in 10 domestic medical centers in order to understand the status of domestic surgical treatment of gGIST. METHODS: Clinicopathological data of gGIST patients undergoing radical excision in 10 medical centers from January 1998 to January 2016 were collected, and their operational conditions, postoperative adjuvant therapy, gene detection and survival were analyzed retrospectively...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
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