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https://www.readbyqxmd.com/read/28076810/dna-occupancy-of-polymerizing-transcription-factors-a-chemical-model-of-the-ets-family-factor-yan
#1
C Matthew Hope, Ilaria Rebay, John Reinitz
Transcription factors use both protein-DNA and protein-protein interactions to assemble appropriate complexes to regulate gene expression. Although most transcription factors operate as monomers or dimers, a few, including the E26 transformation-specific family repressors Drosophila melanogaster Yan and its human homolog TEL/ETV6, can polymerize. Although polymerization is required for both the normal and oncogenic function of Yan and TEL/ETV6, the mechanisms by which it influences the recruitment, organization, and stability of transcriptional complexes remain poorly understood...
January 10, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28072974/-clinicopathologic-features-of-mammary-analogue-secretory-carcinoma-of-salivary-glands
#2
X P Zhang, H Ni, X Wang, H Chen, S S Shi, B Yu, X J Zhou, Q Rao
Objective: To investigate the clinicopathological features of mammary analogue secretory carcinoma (MASC) of salivary glands, and its diagnosis, differential diagnosis, immunohistochemistry and molecular pathology. Methods: Seventeen cases of MASC were enrolled, with 9 cases of salivary acinar cell carcinoma and 18 cases of adenoid cystic carcinoma as control groups from Nanjing General Hospital from 1997 to 2014 were included in this retrospective study, combined with immunohistochemistry and molecular detection of ETV6-NTRK3 gene fusion...
January 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28063722/concordance-of-two-approaches-in-monitoring-of-minimal-residual-disease-in-b-precursor-acute-lymphoblastic-leukemia-fusion-transcripts-and-leukemia-associated-immunophenotypes
#3
Ying-Jung Huang, Elaine Coustan-Smith, Hsiao-Wen Kao, Hsi-Che Liu, Shih-Hsiang Chen, Chih-Cheng Hsiao, Chao-Ping Yang, Tang-Her Jaing, Ting-Chi Yeh, Ming-Chung Kuo, Chang-Liang Lai, Chia-Hui Chang, Dario Campana, Der-Cherng Liang, Lee-Yung Shih
BACKGROUND: Real-time quantitative polymerase chain reaction (RQ-PCR) for fusion transcripts and flow cytometry for leukemia-specific markers are widely used for minimal residual disease (MRD) detection in acute lymphoblastic leukemia, but the relation between the results of either method is unclear. METHODS: Mononucleated cells from 108 bone marrow samples collected from 55 B-precursor acute lymphoblastic leukemia patients (30 with t(12;21)/ETV6-RUNX1, 16 with t(9;22)/BCR-ABL1 and nine with t(1;19)/TCF3-PBX1) were examined in tandem by RQ-PCR and six-color flow cytometry...
January 4, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28063378/overexpression-of-ptp4a3-in-etv6-runx1-acute-lymphoblastic-leukemia
#4
Toni Grönroos, Susanna Teppo, Juha Mehtonen, Saara Laukkanen, Thomas Liuksiala, Matti Nykter, Merja Heinäniemi, Olli Lohi
Cell signalling, which is often derailed in cancer, is a network of multiple interconnected pathways with numerous feedback mechanisms. Dynamics of cell signalling is intimately regulated by addition and removal of phosphate groups by kinases and phosphatases. We examined expression of members of the PTP4A family of phosphatases across acute leukemias. While expression of PTP4A1 and PTP4A2 remained relatively unchanged across diseases, PTP4A3 showed marked overexpression in ETV6-RUNX1 and BCR-ABL1 subtypes of precursor B cell acute lymphoblastic leukemia...
December 26, 2016: Leukemia Research
https://www.readbyqxmd.com/read/28060365/newly-described-salivary-gland-tumors
#5
Alena Skalova, Michal Michal, Roderick Hw Simpson
This review concentrates on three salivary gland tumors that have been accepted in the recent literature as new neoplastic entities: mammary analog secretory carcinoma (MASC), sclerosing polycystic adenoma (SPA) and cribriform adenocarcinoma of tongue and other minor salivary glands (CAMSGs). MASC is a distinctive low-grade malignant salivary cancer that harbors a characteristic chromosomal translocation, t(12;15) (p13;q25) resulting in an ETV6-NTRK3 fusion. SPA is a rare lesion often mistaken histologically for low-grade salivary carcinoma...
January 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28060340/reprogramming-mouse-embryonic-fibroblasts-with-transcription-factors-to-induce-a-hemogenic-program
#6
Michael G Daniel, Carlos-Filipe Pereira, Jeffrey M Bernitz, Ihor R Lemischka, Kateri Moore
This protocol details the induction of a hemogenic program in mouse embryonic fibroblasts (MEFs) via overexpression of transcription factors (TFs). We first designed a reporter screen using MEFs from human CD34-tTA/TetO-H2BGFP (34/H2BGFP) double transgenic mice. CD34(+) cells from these mice label H2B histones with GFP, and cease labeling upon addition of doxycycline (DOX). MEFS were transduced with candidate TFs and then observed for the emergence of GFP(+) cells that would indicate the acquisition of a hematopoietic or endothelial cell fate...
December 16, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28059097/fibrous-hamartoma-of-infancy-a-clinicopathologic-study-of-145-cases-including-2-with-sarcomatous-features
#7
Alyaa Al-Ibraheemi, Anthony Martinez, Sharon W Weiss, Harry P Kozakewich, Antonio R Perez-Atayde, Henry Tran, David M Parham, William R Sukov, Karen J Fritchie, Andrew L Folpe
Fibrous hamartoma of infancy is a rare soft tissue lesion of infants and young children with characteristic triphasic morphology, which typically occurs in the axilla and less commonly in other locations. We reviewed 145 cases of fibrous hamartoma of infancy from our consultation archives. Cases occurred in 106 males and 39 females (mean age-15 months; range-birth to 14 years), and involved both typical sites (eg, axilla/back/upper arm) (n=69) and unusual locations (n=76). Six were congenital. The tumors presented as subcutaneous masses and ranged from 0...
January 6, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28028030/myeloid-neoplasms-with-eosinophilia
#8
Andreas Reiter, Jason Gotlib
Molecular diagnostics has generated substantial dividends in dissecting the genetic basis of myeloid neoplasms with eosinophilia. The family of diseases generated by dysregulated fusion tyrosine kinase (TK) genes is recognized by the World Health Organization (WHO) category, 'Myeloid/lymphoid neoplasms with eosinophilia and rearrangement of PDGFRA, PDGFRB, or FGFR1, or with PCM1-JAK2' In addition to myeloproliferative neoplasms (MPN), these patients can present with myelodysplastic syndrome/MPN, as well as de novo or secondary mixed phenotype acute leukemias/lymphomas...
December 27, 2016: Blood
https://www.readbyqxmd.com/read/28018804/extracalvarial-composite-infantile-myofibromatosis-case-report-and-literature-review
#9
Alexander Ivanov, Tibor Valyi-Nagy, Dimitrios Nikas
Infantile soft tissue tumors of the head are very rare and the majority of them are myofibromas. The authors present the case of a 1-day-old boy with a scalp tumor with several distinct histopathological features including myofibroma, hemangiopericytoma, and fibrosarcoma consistent with the diagnosis of composite infantile myofibromatosis. Genetic testing was negative for trisomy 17, translocation (12; 15), FUS, and ETV6 translocations. Despite the ominous histopathological features, the clinical course was benign...
December 2016: European Journal of Pediatric Surgery Reports
https://www.readbyqxmd.com/read/28010895/platelet-derived-growth-factor-receptors-pdgfrs-fusion-genes-involvement-in-hematological-malignancies
#10
REVIEW
Kwaku Appiah-Kubi, Ting Lan, Ying Wang, Hai Qian, Min Wu, Xiaoyuan Yao, Yan Wu, Yongchang Chen
PURPOSE: To investigate oncogenic platelet-derived growth factor receptor(PDGFR) fusion genes involvement in hematological malignancies, the advances in the PDGFR fusion genes diagnosis and development of PDGFR fusions inhibitors. METHODS: Literature search was done using terms "PDGFR and Fusion" or "PDGFR and Myeloid neoplasm" or 'PDGFR and Lymphoid neoplasm' or "PDGFR Fusion Diagnosis" or "PDGFR Fusion Targets" in databases including PubMed, ASCO.org, and Medscape...
January 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28004528/minimal-residual-disease-monitoring-in-childhood-b-lymphoblastic-leukemia-with-t-12-21-p13-q22-etv6-runx1-concordant-results-using-quantitation-of-fusion-transcript-and-flow-cytometry
#11
S J Alm, C Engvall, J Asp, L Palmqvist, J Abrahamsson, L Fogelstrand
INTRODUCTION: The translocation t(12;21)(p13;q22) resulting in the fusion gene ETV6-RUNX1, is the most frequent gene fusion in childhood B lymphoblastic leukemia. In the Nordic Society of Paediatric Haematology and Oncology ALL-2008 treatment protocol, treatment stratification in B-lineage ALL is based on results of minimal residual disease (MRD) analysis with fluorescence-activated cell sorting (FACS). In this study, we determined whether RT-qPCR of the ETV6-RUNX1 fusion transcript can be a reliable alternative for MRD analysis...
December 22, 2016: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/27974047/fgfr1-and-ntrk3-actionable-alterations-in-wild-type-gastrointestinal-stromal-tumors
#12
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/27913495/germ-line-mutations-associated-with-leukemias
#13
Christopher C Porter
Several genetic syndromes have long been associated with a predisposition to the development of leukemia, including bone marrow failure syndromes, Down syndrome, and Li Fraumeni syndrome. Recent work has better defined the leukemia risk and outcomes in these syndromes. Also, in the last several years, a number of other germ line mutations have been discovered to define new leukemia predisposition syndromes, including ANKRD26, GATA2, PAX5, ETV6, and DDX41 In addition, data suggest that a substantial proportion of patients with therapy related leukemias harbor germ line mutations in DNA damage response genes such as BRCA1/2 and TP53 Recognition of clinical associations, acquisition of a thorough family history, and high index-of-suspicion are critical in the diagnosis of these leukemia predisposition syndromes...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27900092/primary-orbital-precursor-t-cell-lymphoblastic-lymphoma-report-of-a-unique-case
#14
Lisa Stenman, Marta Persson, Fredrik Enlund, Erik Clasen-Linde, Göran Stenman, Steffen Heegaard
Primary T-cell lymphoblastic lymphoma (T-LBL) in the eye region is very rare. The present study described a unique case of T-LBL involving the extraocular muscles. A 22-year-old male patient presented with a 3-week history of headache, reduced visual acuity and edema of the left eye. Clinical examination revealed left-sided exophthalmus, periorbital edema, chemosis, and reduced motility of the left eye. A magnetic resonance imaging scan revealed thickening of the left orbital muscles and a positron emission tomography-computed tomography scan also demonstrated activity in a subclavicular lymph node...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27895713/coexistence-of-iamp21-and-etv6-runx1-fusion-in-an-adolescent-with-b-cell-acute-lymphoblastic-leukemia-literature-review-of-six-additional-cases
#15
Jun Gu, Alexandra Reynolds, Lianghua Fang, Corrie DeGraffenreid, Kenneth Sterns, Keyur P Patel, L Jeffrey Medeiros, Pei Lin, Xinyan Lu
BACKGROUND: Intrachromosomal amplification of chromosome 21 (iAMP21) results from breakage-fusion-bridge cycles and chromothripsis is a distinct marker of a subgroup of B cell acute lymphoblastic leukemia (B-ALL) cases associated with a poor prognosis. iAMP21 accounts for 2% of pediatric B-ALL and occurs predominantly in older children or adolescents. ETV6-RUNX1 fusion, resulting from t(12;21)(p13;q22), is associated with an excellent outcome in younger children with B-ALL. Coexistence of iAMP21 with ETV6-RUNX1 fusion is extremely rare with limited clinical information available...
2016: Molecular Cytogenetics
https://www.readbyqxmd.com/read/27849443/fusion-oncogenes-are-the-main-genetic-events-found-in-sporadic-papillary-thyroid-carcinomas-from-children
#16
Maria Isabel C Vieira Cordioli, Lais Moraes, André U Bastos, Paloma Besson, Maria Teresa de Seixas Alves, Rosana Delcelo, Osmar Monte, Carlos Longui, Adriano Namo Cury, Janete M Cerutti
BACKGROUND: Previous studies reported significant differences in the clinical presentation and outcomes of papillary thyroid carcinoma (PTC) in pediatric patients compared with adults. Previous studies have suggested that the clinicopathological differences observed between pediatric and adult PTCs may be due the existence of distinct genetic alterations. However, the knowledge of genetic events in pediatric PTCs is based primarily on studies in radiation-exposed PTCs or in the few studies that enrolled predominantly adolescent patients...
December 27, 2016: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/27819178/myelodysplastic-syndromes-and-acute-leukemia-with-genetic-predispositions-a-new-challenge-for-hematologists
#17
Nicolas Duployez, Sophie Lejeune, Aline Renneville, Claude Preudhomme
The determination of an underlying genetic predisposition is not automatically part of the diagnosis of hematological malignancies (HM) in routine practice. However, it is assumed that genetic predispositions to HM are currently underestimated due to great variations in disease phenotype, variable latency and incomplete penetrance. Most of patients do not display any biological or clinical signs besides the overt hematological disease and many of them have a lack of personal or family history of malignancies...
December 2016: Expert Review of Hematology
https://www.readbyqxmd.com/read/27812500/an-etv6-abl1-fusion-in-a-patient-with-chronic-myeloproliferative-neoplasm-initial-response-to-imatinib-followed-by-rapid-transformation-into-all
#18
Purvi M Kakadia, Ralf Schmidmaier, Andreas Völkl, Irene Schneider, Natalia Huk, Stephanie Schneider, Gerda Panzner, Ulrike Neidel, Barbara Fritz, Karsten Spiekermann, Stefan K Bohlander
We report the case of a 26 year-old patient presenting with a persistent leukocytosis and CML-like marrow but no evidence of a BCR/ABL1 fusion. Molecular cytogenetics revealed that a portion of the ETV6 locus was inserted into the ABL1 locus. An ETV6/ABL1 fusion transcript could subsequently be confirmed. The patient was started on imatinib and went into complete cytomorphological remission. QRT-PCR measurements showed a 4 log reduction of the ETV6/ABL1 fusion. 15 months later, the disease transformed into ALL and the patient expired...
2016: Leukemia Research Reports
https://www.readbyqxmd.com/read/27802191/molecular-combing-a-new-tool-in-diagnosing-leukemia
#19
Antoine Ittel, Hélène Zattara, Charlène Chaix, Gérard Michel, Nicolas Levy
BACKGROUND: According to the World Health Organization (WHO), recurrent cytogenetic abnormalities define many specific groups of hematopoietic tumors of acute myeloid and lymphoblastic leukemia, and these abnormalities are often strongly associated with prognosis and sometimes require specific treatments. These rearrangements are commonly detected by conventional and molecular cytogenetic techniques. OBJECTIVE: Using an alternative method, we sought to highlight the presence of chromosomal rearrangements...
September 30, 2016: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/27796151/cell-cycle-m-phase-genes-are-highly-upregulated-in-anaplastic-thyroid-carcinoma
#20
Paul Weinberger, Sithara Raju Ponny, Hongyan Xu, Shan Bai, Robert Smallridge, John Copland, Ashok Sharma
BACKGROUND: Anaplastic thyroid carcinoma (ATC) accounts for only 3% of thyroid cancers, yet strikingly, it accounts for almost 40% of thyroid cancer deaths. Currently, no effective therapies exist. In an effort to identify ATC-specific therapeutic targets, we analyzed global gene expression data from multiple studies to identify ATC-specific dysregulated genes. METHODS: The National Center for Biotechnology Information Gene Expression Omnibus database was searched for high-throughput gene expression microarray studies from human ATC tissue along with normal thyroid and/or papillary thyroid cancer (PTC) tissue...
December 15, 2016: Thyroid: Official Journal of the American Thyroid Association
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