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https://www.readbyqxmd.com/read/29665843/next-generation-sequencing-analysis-of-receptor-type-tyrosine-kinase-genes-in-surgically-resected-colon-cancer-identification-of-gain-of-function-mutations-in-the-ret-proto-oncogene
#1
Duarte Mendes Oliveira, Katia Grillone, Chiara Mignogna, Valentina De Falco, Carmelo Laudanna, Flavia Biamonte, Rosa Locane, Francesco Corcione, Massimiliano Fabozzi, Rosario Sacco, Giuseppe Viglietto, Donatella Malanga, Antonia Rizzuto
BACKGROUND: Improvement in genetic characterization of Colon Cancer (CC) patients is required to propose new potential targets, since surgical resection coupled to chemotherapy, presents several limits such as cancer recurrence and drug resistance. Targeted therapies have more efficacy and less toxicity than standard treatments. One of the most relevant cancer-specific actionable targets are receptor tyrosine kinases (RTKs) whose role in CC need to be better investigated. METHODS: We have analysed 37 CC patients using the Ion AmpliSeq™ Comprehensive Cancer Panel (CCP)...
April 17, 2018: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29656754/malignant-cells-from-pleural-fluids-in-malignant-mesothelioma-patients-reveal-novel-mutations
#2
Sophie Sneddon, Ian Dick, Y C Gary Lee, A W Bill Musk, Ann-Marie Patch, John V Pearson, Nicola Waddell, Richard J N Allcock, Robert A Holt, Bruce W S Robinson, Jenette Creaney
OBJECTIVES: Malignant mesothelioma (MM) is an asbestos related tumour affecting cells of serosal cavities. More than 70% of MM patients develop pleural effusions which contain tumour cells, representing a readily accessible source of malignant cells for genetic analysis. Although common somatic mutations and losses have been identified in solid MM tumours, the characterization of tumour cells within pleural effusions could provide novel insights but is little studied. MATERIALS AND METHODS: DNA and RNA were extracted from cells from short term cultures of 27 human MM pleural effusion samples...
May 2018: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/29656465/structural-characterization-of-the-interaction-of-the-fibroblast-growth-factor-receptor-with-a-small-molecule-allosteric-inhibitor
#3
Franziska Kappert, Sridhar Sreeramulu, Hendrik R A Jonker, Christian Richter, Vladimir V Rogov, Ewgenij Proschak, Bruno Hargittay, Krishna Saxena, Harald Schwalbe
The interaction of fibroblast growth factors (FGFs) with their fibroblast growth factor receptors (FGFRs) are important in the signaling network of cell growth and development. SSR128129E (SSR)[1,2], a ligand of small molecular weight with potential anti-cancer properties, acts allosterically on the extracellular domains of FGFRs. Up to now, the structural basis of SSR binding to the D3 domain of FGFR remained elusive. Here, we report the structural characterization of the interaction of SSR with one specific receptor, FGFR3 by NMR spectroscopy...
April 14, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29656442/treatment-emergent-hypertension-and-efficacy-in-the-phase-3-study-of-e7080-lenvatinib-in-differentiated-cancer-of-the-thyroid-select
#4
Lori J Wirth, Makoto Tahara, Bruce Robinson, Sanjeev Francis, Marcia S Brose, Mouhammed Amir Habra, Kate Newbold, Naomi Kiyota, Corina E Dutcus, Elton Mathias, Matthew Guo, Steven I Sherman, Martin Schlumberger
BACKGROUND: Hypertension (HTN) is an established class effect of vascular endothelial growth factor receptor (VEGFR) inhibition. In the phase 3 Study of (E7080) Lenvatinib in Differentiated Cancer of the Thyroid (SELECT) trial, HTN was the most frequent adverse event of lenvatinib, an inhibitor of VEGFR1, VEGFR2, VEGFR3, fibroblast growth factor receptor 1 (FGFR1), FGFR2, FGFR3, FGFR4, platelet-derived growth factor receptor α (PDGFRα), ret proto-oncogene (RET), and stem cell factor receptor (KIT)...
April 14, 2018: Cancer
https://www.readbyqxmd.com/read/29652901/early-postnatal-soluble-fgfr3-therapy-prevents-the-atypical-development-of-obesity-in-achondroplasia
#5
Celine Saint-Laurent, Stephanie Garcia, Vincent Sarrazy, Karine Dumas, Florence Authier, Sophie Sore, Albert Tran, Philippe Gual, Isabelle Gennero, Jean-Pierre Salles, Elvire Gouze
BACKGROUND: Achondroplasia is a rare genetic disease is characterized by abnormal bone development and early obesity. While the bone aspect of the disease has been thoroughly studied, early obesity affecting approximately 50% of them during childhood has been somewhat neglected. It nevertheless represents a major health problem in these patients, and is associated to life-threatening complications including increasing risk of cardiovascular pathologies. We have thus decided to study obesity in patients and to use the mouse model to evaluate if soluble FGFR3 therapy, an innovative treatment approach for achondroplasia, could also impact the development of this significant complication...
2018: PloS One
https://www.readbyqxmd.com/read/29626475/fgf8-and-fgfr3-are-up-regulated-in-hypertrophic-chondrocytes-association-with-chondrocyte-death-in-deep-zone-of-kashin-beck-disease
#6
Huizhong Liu, Qian Fang, Mengying Wang, Wenjun Wang, Meng Zhang, Dan Zhang, Ying He, Ying Zhang, Hui Wang, Miguel Otero, Tianyou Ma, Jinghong Chen
OBJECTIVE: The aim of this study was to investigate FGF8 and FGFR3 expression in clinical samples of Kashin-Beck disease (KBD), an endemic osteochondropathy found in China, as well as in pre-clinical models of this disease. METHOD: Cartilage was collected from the hand phalanges of five patients with KBD and from five healthy children. Sprague-Dawley rats were administered a selenium-deficient diet for four weeks prior to exposure to the T-2 toxin. ATDC5 cells were differentiated into hypertrophic chondrocytes for twenty-one days, and then treated with 3-morpholinosydnonimine (SIN-1) (0, 1, 3, or 5 mM) for 24 h...
April 4, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29617662/driver-fusions-and-their-implications-in-the-development-and-treatment-of-human-cancers
#7
Qingsong Gao, Wen-Wei Liang, Steven M Foltz, Gnanavel Mutharasu, Reyka G Jayasinghe, Song Cao, Wen-Wei Liao, Sheila M Reynolds, Matthew A Wyczalkowski, Lijun Yao, Lihua Yu, Sam Q Sun, Ken Chen, Alexander J Lazar, Ryan C Fields, Michael C Wendl, Brian A Van Tine, Ravi Vij, Feng Chen, Matti Nykter, Ilya Shmulevich, Li Ding
Gene fusions represent an important class of somatic alterations in cancer. We systematically investigated fusions in 9,624 tumors across 33 cancer types using multiple fusion calling tools. We identified a total of 25,664 fusions, with a 63% validation rate. Integration of gene expression, copy number, and fusion annotation data revealed that fusions involving oncogenes tend to exhibit increased expression, whereas fusions involving tumor suppressors have the opposite effect. For fusions involving kinases, we found 1,275 with an intact kinase domain, the proportion of which varied significantly across cancer types...
April 3, 2018: Cell Reports
https://www.readbyqxmd.com/read/29593476/novel-and-recurrent-mutations-in-the-fgfr3-gene-and-double-heterozygosity-cases-in-a-cohort-of-brazilian-patients-with-skeletal-dysplasia
#8
Maria E S Gomes, Thatiane Y Kanazawa, Fernanda R Riba, Natálya G Pereira, Maria C C Zuma, Natana C Rabelo, Maria T Sanseverino, Dafne D G Horovitz, Juan C Llerena, Denise P Cavalcanti, Sayonara Gonzalez
Mutations in the fibroblast growth factor receptor 3 gene ( FGFR3 ) cause achondroplasia (ACH), hypochondroplasia (HCH), and thanatophoric dysplasia types I and II (TDI/TDII). In this study, we performed a genetic study of 123 Brazilian patients with these phenotypes. Mutation hotspots of the FGFR3 gene were PCR amplified and sequenced. All cases had recurrent mutations related to ACH, HCH, TDI or TDII, except for 2 patients. One of them had a classical TDI phenotype but a typical ACH mutation (c.1138G>A) in combination with a novel c...
February 2018: Molecular Syndromology
https://www.readbyqxmd.com/read/29588307/comprehensive-genomic-profiling-aids-in-treatment-of-a-metastatic-endometrial-cancer
#9
Jatinder Dhami, Kim M Hirshfield, Shridar Ganesan, Mira Hellmann, Veronica Rojas, Judith K Amorosa, Gregory M Riedlinger, Hua Zhong, Siraj M Ali, Dean Pavlick, Julia A Elvin, Lorna Rodriguez-Rodriguez
PURPOSE: FGFR-TACC fusions, including FGFR3-TACC3, have been identified as potential oncogenic drivers and actionable alterations in a number of different cancer types. The clinical relevance of FGFR3-TACC3 fusions in endometrial cancer has not yet been described. METHODS: Formalin-fixed, paraffin-embedded metastatic endometrial carcinoma from the spleen and peritoneum were sent for comprehensive genomic profiling (CGP) using the FoundationOne platform as part of a prospective tumor genomic profiling protocol...
March 27, 2018: Cold Spring Harbor Molecular Case Studies
https://www.readbyqxmd.com/read/29582384/nmr-backbone-assignments-of-the-tyrosine-kinase-domain-of-human-fibroblast-growth-factor-receptor-3-in-apo-state-and-in-complex-with-inhibitor-pd173074
#10
Domenico Sanfelice, Hans Koss, Tom D Bunney, Gary S Thompson, Brendan Farrell, Matilda Katan, Alexander L Breeze
Fibroblast growth factors receptors (FGFR) are transmembrane protein tyrosine kinases involved in many cellular process, including growth, differentiation and angiogenesis. Dysregulation of FGFR enzymatic activity is associated with developmental disorders and cancers; therefore FGFRs have become attractive targets for drug discovery, with a number of agents in late-stage clinical trials. Here, we present the backbone resonance assignments of FGFR3 tyrosine kinase domain in the ligand-free form and in complex with the canonical FGFR kinase inhibitor PD173074...
March 26, 2018: Biomolecular NMR Assignments
https://www.readbyqxmd.com/read/29573965/the-evolution-of-bladder-cancer-genomics-what-have-we-learned-and-how-can-we-use-it
#11
REVIEW
François Audenet, Kyrollis Attalla, John P Sfakianos
BACKGROUND: With advancements in molecular biology techniques, great progress has been made in the understanding of urothelial carcinoma pathogenesis. OBJECTIVE: To examine the historic description of molecular alterations in bladder cancer and their evolution towards our current comprehension of the biology of the disease. RESULTS: Historically, a two-pathway model was described from histological and cytogenetic studies: low-grade papillary non-muscle invasive bladder cancers (NMIBC) were described to arise from epithelial hyperplasia with loss of chromosome 9 as an early event, whereas muscle-invasive bladder cancers (MIBC) were considered to develop from dysplasia, associated with genetic instability...
March 21, 2018: Urologic Oncology
https://www.readbyqxmd.com/read/29561715/genetic-analysis-of-syndromic-and-nonsyndromic-patients-with-craniosynostosis-identifies-novel-mutations-in-the-twist1-and-efnb1-genes
#12
Despina Apostolopoulou, Olga S Kaxira, Angeliki Hatzaki, Kanaris P Panagopoulos, Konstantinos Alexandrou, Alexander Stratoudakis, Panagoula Kollia, Vassiliki Aleporou
INTRODUCTION: Craniosynostosis, the premature fusion of cranial sutures, is usually divided into 2 major categories: syndromic and nonsyndromic. Mutations in the FGFR1, FGFR2, FGFR3, TWIST1, and EFNB1 genes cause the common craniosynostosis syndromes Muenke, Crouzon and Crouzon with acanthosis nigricans, Apert, Pfeiffer, Saethre-Chotzen, and Craniofrontonasal. Overlapping features among craniosynostosis syndromes, phenotypic heterogeneity even within the same syndrome, especially in the case of Muenke syndrome, and inadequate clinical evaluation can lead to misdiagnosis, which molecular testing can help clarify...
January 1, 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29557836/glaucoma-with-crouzon-syndrome
#13
Abdulaziz Anazi Alshamrani, Sami Al-Shahwan
BACKGROUND: Crouzon syndrome is the most common form of craniosynostosis, and mutations in the fibroblast growth factor receptor 2 and 3 (FGFR2 and FGFR3) genes are implicated in its pathogenesis. OBSERVATION: A 10-year-old female patient with Crouzon syndrome and congenital glaucoma treated with trabeculectomy and ocular hypotensive medications was examined. The patient had proptosis, exposure keratopathy, megalocornea, thin central corneal thickness, a shallow anterior chamber, mild anterior subcapsular cataract, and a cup-to-disc ratio of 0...
March 19, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29550217/demographic-characteristics-of-craniosynostosis-patients-in-asia
#14
Il Hwan Byun, Jong Won Hong, Mohammed Ahmed Hussein, Yong Oock Kim
PURPOSE: Craniosynostosis (CRS) is a congenital condition resulting premature fusion of one or more cranial sutures. CRS is classified according to the involved sutures into sagittal, metopic, unicoronal, unilambdoid, bicoronal, and multiple-suture CRS, with sagittal suture fusion known to be the most common type. Although multiple studies have presented demographic characteristics of CRS patients, to date, there is no study representing an Asian population. We sought to compare the demographic characteristics of Asian patients to those of Western patients, considering previous reports...
February 21, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29546640/molecular-defects-in-braf-wild-type-ameloblastomas-and-craniopharyngiomas-differences-in-mutation-profiles-in-epithelial-derived-oropharyngeal-neoplasms
#15
Stephan Bartels, Akinyele Adisa, Timothy Aladelusi, Juliana Lemound, Angelika Stucki-Koch, Sami Hussein, Hans Kreipe, Christian Hartmann, Ulrich Lehmann, Kais Hussein
The aim of this study was to evaluate the mutation profile of BRAF wild-type craniopharyngiomas and ameloblastomas. Pre-screening by immunohistochemistry and pyrosequencing for identifying BRAF wild-type tumors was performed on archived specimens of ameloblastic tumors (n = 20) and craniopharyngiomas (n = 62). Subsequently, 19 BRAF wild-type tumors (nine ameloblastic tumors and ten craniopharyngiomas) were analyzed further using next-generation sequencing (NGS) targeting hot spot mutations of 22 cancer-related genes...
March 15, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29545752/identification-of-a-novel-protein-arginine-methyltransferase-5-inhibitor-in-non-small-cell-lung-cancer-by-structure-based-virtual-screening
#16
Qianqian Wang, Jiahui Xu, Ying Li, Jumin Huang, Zebo Jiang, Yuwei Wang, Liang Liu, Elaine Lai Han Leung, Xiaojun Yao
Protein arginine methyltransferase 5 (PRMT5) is able to regulate gene transcription by catalyzing the symmetrical dimethylation of arginine residue of histone, which plays a key role in tumorigenesis. Many efforts have been taken in discovering small-molecular inhibitors against PRMT5, but very few were reported and most of them were SAM-competitive. EPZ015666 is a recently reported PRMT5 inhibitor with a new binding site, which is different from S-adenosylmethionine (SAM)-binding pocket. This new binding site provides a new clue for the design and discovery of potent and specific PRMT5 inhibitors...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29545125/signaling-systems-affecting-the-severity-of-multiple-osteochondromas
#17
Virginia Piombo, Katja Jochmann, Daniel Hoffmann, Manuela Wuelling, Andrea Vortkamp
Multiple osteochondromas (MO) syndrome is a dominant autosomal bone disorder characterized by the formation of cartilage-capped bony outgrowths that develop at the juxtaposition of the growth plate of endochondral bones. MO has been linked to mutations in either EXT1 or EXT2, two glycosyltransferases required for the synthesis of heparan sulfate (HS). The establishment of mouse mutants demonstrated that a clonal, homozygous loss of Ext1 in a wild type background leads to the development of osteochondromas. Here we investigate mechanisms that might contribute to the variation in the severity of the disease observed in human patients...
March 12, 2018: Bone
https://www.readbyqxmd.com/read/29542187/multiplex-pcr-in-noninvasive-prenatal-diagnosis-for-fgfr3-related-disorders
#18
Sumire Terasawa, Asuka Kato, Haruki Nishizawa, Takema Kato, Hikari Yoshizawa, Yoshiteru Noda, Jun Miyazaki, Mayuko Ito, Takao Sekiya, Takuma Fujii, Hiroki Kurahashi
Thanatophoric dysplasia (TD) and achondroplasia (ACH) are allelic disorders caused by a constitutively active mutation in the FGFR3 gene. Because TD is a lethal disorder and ACH is non-lethal, they need to be distinguished after ultrasound identification of fetal growth retardation with short limbs. Accordingly, we have developed a noninvasive prenatal test using cell-free fetal DNA in the maternal circulation to distinguish TD and ACH. A multiplex PCR system encompassing five mutation hotspots in the FGFR3 gene allowed us to efficiently identify the responsible mutation in cell-free DNA in all examined pregnancies with a suspected TD or ACH fetus...
March 14, 2018: Congenital Anomalies
https://www.readbyqxmd.com/read/29540697/kaempferol-targeting-on-the-fibroblast-growth-factor-receptor-3-ribosomal-s6-kinase-2-signaling-axis-prevents-the-development-of-rheumatoid-arthritis
#19
Cheol-Jung Lee, Su-Jin Moon, Jeong-Hee Jeong, Sangbae Lee, Mee-Hyun Lee, Sun-Mi Yoo, Hye Suk Lee, Han Chang Kang, Joo Young Lee, Weon Sun Lee, Hee-Jin Lee, Eun-Kyung Kim, Joo-Yeon Jhun, Mi-La Cho, Jun-Ki Min, Yong-Yeon Cho
Rheumatoid arthritis (RA) is a systemic inflammatory disease that mainly affects the synovial joints. Although involvement of the fibroblast growth factor (FGF) signaling pathway has been suggested as an important modulator in RA development, no clear evidence has been provided. In this study, we found that synovial fluid basic FGF (bFGF) concentration was significantly higher in RA than in osteoarthritis (OA) patients. bFGF stimulates proliferation and migration of human fibroblast-like synoviocytes (FLSs) by activation of the bFGF-FGF receptor 3 (FGFR3)-ribosomal S6 kinase 2 (RSK2) signaling axis...
March 14, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29533868/does-smoking-alter-the-mutation-profile-of-human-papillomavirus-driven-head-and-neck-cancers
#20
Haitham Mirghani, Ludovic Lacroix, Caroline Rossoni, Roger Sun, Anne Aupérin, Odile Casiraghi, Aude Villepelet, Roger Lacave, Gladwys Faucher, Virginie Marty, Charles Ferté, Jean Charles Soria, Caroline Even
BACKGROUND: Human papillomavirus (HPV)-driven oropharyngeal cancer (OPC) patients are characterised by a better prognosis than their HPV-negative counterparts. However, this significant survival advantage is not homogeneous and among HPV-positive patients those with a smoking history have a significantly increased risk of oncologic failure. The reason why tobacco consumption impacts negatively the prognosis is still elusive. Tobacco might induce additional genetic alterations leading to a more aggressive phenotype...
March 10, 2018: European Journal of Cancer
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