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https://www.readbyqxmd.com/read/28427515/fgfr-a-promising-druggable-target-in-cancer-molecular-biology-and-new-drugs
#1
REVIEW
Rut Porta, Roberto Borea, Andreia Coelho, Shahanavaj Khan, António Araújo, Pablo Reclusa, Tindara Franchina, Nele Van Der Steen, Peter Van Dam, Jose Ferri, Rafael Sirera, Aung Naing, David Hong, Christian Rolfo
INTRODUCTION: The Fibroblast Growth Factor Receptor (FGFR) family consists of Tyrosine Kinase Receptors (TKR) involved in several biological functions. Recently, alterations of FGFR have been reported to be important for progression and development of several cancers. In this setting, different studies are trying to evaluate the efficacy of different therapies targeting FGFR. AREAS COVERED: This review summarizes the current status of treatments targeting FGFR, focusing on the trials that are evaluating the FGFR profile as inclusion criteria: Multi-Target, Pan-FGFR Inhibitors and anti-FGF (Fibroblast Growth Factor)/FGFR Monoclonal Antibodies...
May 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28416604/oncogenic-characterization-and-pharmacologic-sensitivity-of-activating-fibroblast-growth-factor-receptor-fgfr-genetic-alterations-to-the-selective-fgfr-inhibitor-erdafitinib
#2
Jayaprakash D Karkera, Gabriela Martinez Cardona, Katherine Bell, Dana Gaffney, Joseph C Portale, Ademi Santiago-Walker, Christopher Moy, Peter King, Michael Sharp, Rastilav Bahleda, Feng R Luo, John D Alvarez, Matthew V Lorenzi, Suso J Platero
Fibroblast growth factor receptor (FGFR) genetic alterations are frequently observed in cancer, suggesting that FGFR inhibition may be a promising therapy in patients harboring these lesions.  Identification of predictive and pharmacodynamic biomarkers to select and monitor patients most likely to respond to FGFR inhibition will be the key to clinical development of this class of agents.  Sensitivity to FGFR inhibition and correlation with FGFR pathway activation status were determined in molecularly annotated panels of cancer cell lines and xenograft models...
April 17, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28388262/investigational-drugs-targeting-fibroblast-growth-factor-receptor-in-the-treatment-of-non-small-cell-lung-cancer
#3
Erika Rijavec, Carlo Genova, Giulia Barletta, Federica Biello, Giovanni Rossi, Marco Tagliamento, Maria Giovanna Dal Bello, Simona Coco, Irene Vanni, Simona Boccardo, Angela Alama, Francesco Grossi
Fibroblast growth factor receptor (FGFR) due to its central role in regulating cell survival, is a promising target for cancer therapeutics. Dysregulation of the FGFR pathway has been observed in several malignancies, including non-small cell lung cancer (NSCLC) particularly in patients with squamous histology. Areas covered: The aim of this article is to review the most relevant findings of clinical trials investigating drugs targeting FGFR pathway: such as FGFR tyrosine kinase inhibitors (TKIs), FGFR monoclonal antibodies and FGF ligand traps in NSCLC patients...
May 2017: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/28382169/integration-of-receptor-tyrosine-kinases-determines-sensitivity-to-pi3k%C3%AE-selective-inhibitors-in-breast-cancer
#4
Yi-Chao Xu, Xiang Wang, Yi Chen, Si-Meng Chen, Xin-Ying Yang, Yi-Ming Sun, Mei-Yu Geng, Jian Ding, Ling-Hua Meng
PI3Kα-selective inhibitor BYL719 is currently in phase II/III clinical trial for the treatment of breast cancer, but highly variable response has been observed among patients. We sought to discover predictive biomarker for the efficacy of BYL719 by dissecting the proliferative signaling pathway mediated by PI3K in breast cancer. BYL719 concurrently inhibited the phosphorylation of AKT and ERK in PIK3CA-mutated human breast cancer cells. PI3K-regulated ERK phosphorylation was independent of canonical PDK1/AKT/mTOR pathway, while it was associated with RAF/MEK...
2017: Theranostics
https://www.readbyqxmd.com/read/28381415/her2-overexpressing-breast-cancers-amplify-fgfr-signaling-upon-acquisition-of-resistance-to-dual-therapeutic-blockade-of-her2
#5
Ariella B Hanker, Joan G Garrett, Monica Valeria Estrada, Preston D Moore, Paula G Ericsson, James P Koch, Emma Langley, Sharat Singh, Phillip S Kim, Garrett M Frampton, Eric M Sanford, Philip Owns, Jennifer Becker, M Reid Groseclose, Stephen Castellino, Heikki Joensuu, Jens Huober, Jan C Brase, Majjaj Samira, Sylvain Brohée, David Venet, David Brown, José Baselga, Martine Piccart, Christos Sotiriou, Carlos L Arteaga
Dual blockade of HER2 with trastuzumab and lapatinib or pertuzumab has been shown to be superior to single-agent trastuzumab. However, a significant fraction of HER2-overexpressing (HER2+) breast cancers escape from these drug combinations. In this study, we sought to discover the mechanisms of acquired resistance to the combination of lapatinib + trastuzumab.<br /><br />Experimental Design: HER2+ BT474 xenografts were treated with lapatinib + trastuzumab long-term until resistance developed. Potential mechanisms of acquired resistance were evaluated in lapatinib + trastuzumab-resistant (LTR) tumors by targeted capture next-generation sequencing...
April 5, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28379191/discovery-and-biological-evaluation-of-a-series-of-pyrrolo-2-3-b-pyrazines-as-novel-fgfr-inhibitors
#6
Yan Zhang, Hongchun Liu, Zhen Zhang, Ruifeng Wang, Tongchao Liu, Chaoyun Wang, Yuchi Ma, Jing Ai, Dongmei Zhao, Jingkang Shen, Bing Xiong
Abnormality of fibroblast growth factor receptor (FGFR)-mediated signaling pathways were frequently found in various human malignancies, making FGFRs hot targets for cancer treatment. To address the consistent need for a new chemotype of FGFR inhibitors, here, we started with a hit structure identified from our internal hepatocyte growth factor receptor (also called c-Met) inhibitor project, and conducted a chemical optimization. After exploring three parts of the hit compound, we finally discovered a new series of pyrrolo[2,3-b]pyrazine FGFR inhibitors, which contain a novel scaffold and unique molecular shape...
April 5, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28368392/met-amplification-and-epithelial-to-mesenchymal-transition-exist-as-parallel-resistance-mechanisms-in-erlotinib-resistant-egfr-mutated-nsclc-hcc827-cells
#7
K R Jakobsen, C Demuth, A T Madsen, D Hussmann, J Vad-Nielsen, A L Nielsen, B S Sorensen
Although many epidermal growth factor receptor (EGFR)-mutated lung cancer patients initially benefit from the EGFR-inhibitor erlotinib, all acquire resistance. So far, several mechanisms implicated in resistance have been identified, but the existence of multiple resistance mechanisms in parallel have only been sparsely investigated. In this study, we investigated parallel resistance mechanisms acquired by HCC827, an EGFR-mutated adenocarcinoma cell line dependent on EGFR activity and sensitive to erlotinib...
April 3, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28350116/selective-fgfr-inhibitor-bgj398-inhibits-phosphorylation-of-akt-and-stat3-and-induces-cytotoxicity-in-sphere-cultured-ovarian-cancer-cells
#8
Hwa Jun Cha, Jung Hye Choi, In Chul Park, Chun Ho Kim, Sung Kwan An, Tae Jin Kim, Jae Ho Lee
Epithelial ovarian cancer is the most aggressive and lethal among the gynecological malignancies, which is often found disseminated to peritoneal cavity at the time of diagnosis. There is accumulating evidence on the existence of genetic alteration and amplification of fibroblast growth factor receptor (FGFR) in various cancers. Also the aberrated FGFR/FGF signaling has been implicated in cancer development and tumor microenvironment. However, the antitumor activity of BGJ398, a selective inhibitor of FGFR 1/2/3 against ovarian cancer still remains unknown...
March 15, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28342996/induction-of-neuroendocrine-differentiation-in-prostate-cancer-cells-by-dovitinib-tki-258-and-its-therapeutic-implications
#9
Shalini S Yadav, Jinyi Li, Jennifer A Stockert, Bryan Herzog, James O'Connor, Luis Garzon-Manco, Ramon Parsons, Ashutosh K Tewari, Kamlesh K Yadav
Prostate cancer (PCa) remains the second-leading cause of cancer-related deaths in American men with an estimated mortality of more than 26,000 in 2016 alone. Aggressive and metastatic tumors are treated with androgen deprivation therapies (ADT); however, the tumors acquire resistance and develop into lethal castration resistant prostate cancer (CRPC). With the advent of better therapeutics, the incidences of a more aggressive neuroendocrine prostate cancer (NEPC) variant continue to emerge. Although de novo occurrences of NEPC are rare, more than 25% of the therapy-resistant patients on highly potent new-generation anti-androgen therapies end up with NEPC...
March 24, 2017: Translational Oncology
https://www.readbyqxmd.com/read/28341788/discovery-and-pharmacological-characterization-of-jnj-42756493-erdafitinib-a-functionally-selective-small-molecule-fgfr-family-inhibitor
#10
Timothy P S Perera, Eleonora Jovcheva, Laurence Mevellec, Jorge Vialard, Desiree De Lange, Tinne Verhulst, Caroline Paulussen, Kelly Van De Ven, Peter King, Eddy Freyne, David C Rees, Matthew Squires, Gordon Saxty, Martin Page, Ron Gilissen, Christopher W Murray, George Ward, Neil T Thompson, David R Newell, Na Cheng, Liang Xie, Jennifer Yang, Suso J Platero, Jayaprakash D Karkera, Christopher Moy, Patrick Angibaud, Sylvie Laquerre, Matthew V Lorenzi
Fibroblast growth factor (FGF) signaling plays critical roles in key biological processes ranging from embryogenesis to wound healing and has strong links to several hallmarks of cancer. Genetic alterations in FGF receptor (FGFR) family members are associated with increased tumor growth, metastasis, angiogenesis and decreased survival. JNJ-42756493, erdafitinib, is an orally active small molecule with potent tyrosine kinase inhibitory activity against all four FGFR family members and selectivity versus other highly related kinases...
March 24, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28340475/irinotecan-upregulates-fibroblast-growth-factor-receptor-3-expression-in-colorectal-cancer-cells-which-mitigates-irinotecan-induced-apoptosis
#11
Zeynep N Erdem, Stefanie Schwarz, Daniel Drev, Christine Heinzle, Andrea Reti, Petra Heffeter, Xenia Hudec, Klaus Holzmann, Bettina Grasl-Kraupp, Walter Berger, Michael Grusch, Brigitte Marian
BACKGROUND: Irinotecan (IRI) is an integral part of colorectal cancer (CRC) therapy, but response rates are unsatisfactory and resistance mechanisms are still insufficiently understood. As fibroblast growth factor receptor 3 (FGFR3) mediates essential survival signals in CRC, it is a candidate gene for causing intrinsic resistance to IRI. METHODS: We have used cell line models overexpressing FGFR3 to study the receptor's impact on IRI response. For pathway blockade, a dominant-negative receptor mutant and a small molecule kinase inhibitor were employed...
March 21, 2017: Translational Oncology
https://www.readbyqxmd.com/read/28327938/targeting-the-fibroblast-growth-factor-receptor-2-in-gastric-cancer-promise-or-pitfall
#12
C Hierro, M Alsina, M Sánchez, V Serra, J Rodon, J Tabernero
Gastric cancer is the third leading cause of death from cancer worldwide. Systemic chemotherapy remains the mainstay therapeutic option for this poor prognosis cancer. Trastuzumab, the epidermal growth factor receptor 2 (ERBB2 or HER2)-antibody, is the only biological agent approved for the molecularly-selected population of HER2-positive gastric cancer patients. Over the last decade, several groups have been working for deepening into the molecular characterization of gastric cancer, shedding some light into the heterogeneity of this tumour...
March 7, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28314589/fgfr2-mutations-are-associated-with-poor-outcomes-in-endometrioid-endometrial-cancer-an-nrg-oncology-gynecologic-oncology-group-study
#13
Yvette W Jeske, Shamshad Ali, Sara A Byron, Feng Gao, Robert S Mannel, Rahel G Ghebre, Paul A DiSilvestro, Shashikant B Lele, Michael L Pearl, Amy P Schmidt, Heather A Lankes, Nilsa C Ramirez, Golnar Rasty, Matthew Powell, Paul J Goodfellow, Pamela M Pollock
PURPOSE: Activating FGFR2 mutations have been identified in ~10% of endometrioid endometrial cancers (ECs). We have previously reported that mutations in FGFR2 are associated with shorter disease free survival (DFS) in stage I/II EC patients. Here we sought to validate the prognostic importance of FGFR2 mutations in a large, multi-institutional patient cohort. METHODS: Tumors were collected as part of the GOG 210 clinical trial "Molecular Staging of Endometrial Cancer" where samples underwent rigorous pathological review and had more than three years of detailed clinical follow-up...
March 14, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28303906/advances-and-challenges-in-targeting-fgfr-signalling-in-cancer
#14
REVIEW
Irina S Babina, Nicholas C Turner
Fibroblast growth factors (FGFs) and their receptors (FGFRs) regulate numerous cellular processes. Deregulation of FGFR signalling is observed in a subset of many cancers, making activated FGFRs a highly promising potential therapeutic target supported by multiple preclinical studies. However, early-phase clinical trials have produced mixed results with FGFR-targeted cancer therapies, revealing substantial complexity to targeting aberrant FGFR signalling. In this Review, we discuss the increasing understanding of the differences between diverse mechanisms of oncogenic activation of FGFR, and the factors that determine response and resistance to FGFR targeting...
May 2017: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/28280605/next-generation-sequencing-identifies-interactome-signatures-in-relapsed-and-refractory-metastatic-colorectal-cancer
#15
Benny Johnson, Laurence Cooke, Daruka Mahadevan
BACKGROUND: In the management of metastatic colorectal cancer (mCRC), KRAS, NRAS and BRAF mutational status individualizes therapeutic options and identify a cohort of patients (pts) with an aggressive clinical course. We hypothesized that relapsed and refractory mCRC pts develop unique mutational signatures that may guide therapy, predict for a response and highlight key signaling pathways important for clinical decision making. METHODS: Relapsed and refractory mCRC pts (N=32) were molecularly profiled utilizing commercially available next generation sequencing (NGS) platforms...
February 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28277834/predictive-biomarkers-along-gastric-cancer-pathogenetic-pathways
#16
Iacopo Panarese, Ferdinando De Vita, Andrea Ronchi, Marco Romano, Roberto Alfano, Natale Di Martino, Federica Zito Marino, Francesca Ferraraccio, Renato Franco
Gastric cancer is the second leading cause of cancer all over the world. Unfortunately, several gastric cancers are diagnosed in an advanced stage and chemotherapy and/or target therapies remain the only options to treat patients. Areas covered: Herein we evaluate the new molecular proposal of gastric cancer classification, offering the possibility to recognize different pathogenetic mechanisms and molecular biomarkers potentially useful for target therapies. Expert commentary: The possibility of introducing new specific tests for identification of molecular biomarkers critical for targeted therapies response represents the new frontier in the selection of gastric cancer patients to improve their survival...
May 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28264865/gatekeeper-mutations-and-intratumoral-heterogeneity-in-fgfr2-translocated-cholangiocarcinoma
#17
Elizabeth C Smyth, Irina S Babina, Nicholas C Turner
FGFR2 genetic translocations are frequent in cholangiocarcinoma, yet despite initial sensitivity to FGFR inhibitors in clinic, patients quickly become resistant to targeted therapies. The work published by Goyal and colleagues demonstrates that acquisition of gatekeeper mutations in FGFR2 and intratumoral heterogeneity drive resistance in patients with FGFR2-translocated intrahepatic cholangiocarcinoma, which will have important implications for management of the disease in clinic. Cancer Discov; 7(3); 248-9...
March 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28263980/an-fgfr-inhibitor-converts-the-tumor-promoting-effect-of-tgf-%C3%AE-by-the-induction-of-fibroblast-associated-genes-of-hepatoma-cells
#18
H-R Zhang, X-D Wang, X Yang, D Chen, J Hao, R Cao, X-Z Wu
Tumors consistently mimic wound-generating chronic inflammation; however, why they do not heal like wounds with fibrotic scars remains unknown. The components of the tumor microenvironment, such as transforming growth factor β (TGF-β) and fibroblast growth factors (FGFs), may account for this phenomenon. Tumor formation involves continuous activation of the FGF pathway, whereas the repair of tissue injury is a self-limiting process accompanied with controlled activation of the FGF pathway. In the tumor microenvironment TGF-β increases the secretion of FGFs, further promoting the malignant biological properties of tumors...
March 6, 2017: Oncogene
https://www.readbyqxmd.com/read/28255027/akt-activation-mediates-acquired-resistance-to-fibroblast-growth-factor-receptor-inhibitor-bgj398
#19
Jharna Datta, Senthilkumar Damodaran, Hannah Parks, Cristina Ocrainiciuc, Jharna Miya, Lianbo Yu, Elijah P Gardner, Eric Samorodnitsky, Michele R Wing, Darshna Bhatt, John Hays, Julie W Reeser, Sameek Roychowdhury
Activation of FGFR signaling through mutations, amplifications, or fusions involving FGFR1, 2, 3, or 4 is seen in multiple tumors, including lung, bladder, and cholangiocarcinoma. Currently, several clinical trials are evaluating the role of novel FGFR inhibitors in solid tumors. As we move forward with FGFR inhibitors clinically, we anticipate the emergence of resistance with treatment. Consequently, we sought to study the mechanism(s) of acquired resistance to FGFR inhibitors using annotated cancer cell lines...
April 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28240679/in-vitro-and-in-vivo-combined-effect-of-arq-092-an-akt-inhibitor-with-arq-087-a-fgfr-inhibitor
#20
Yi Yu, Terence Hall, Sudharshan Eathiraj, Michael J Wick, Brian Schwartz, Giovanni Abbadessa
The PI3K/AKT pathway plays an important role in the initiation and progression of cancer, and the drug development efforts targeting this pathway with therapeutic interventions have been advanced by academic and industrial groups. However, the clinical outcome is moderate. Combination of inhibition of PI3K/AKT and other targeted agents became a feasible approach. In this study we assessed the combined effect of ARQ 092, a pan-AKT inhibitor, and ARQ 087, a pan-FGFR inhibitor, in vitro and in vivo. In a panel of 45 cancer cell lines, on 24% (11 out of 45) the compounds showed synergistic effect, on 62% (28 out of 45) additive, and on 13% (6 out of 45) antagonistic...
June 2017: Anti-cancer Drugs
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