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https://www.readbyqxmd.com/read/28410286/successful-treatment-with-imatinib-after-nilotinib-and-ipilimumab-in-a-c-kit-mutated-advanced-melanoma-patient-a-case-report
#1
Carla Murer, Pascale Kränzlin-Stieger, Lars E French, Reinhard Dummer, Simone M Goldinger
Treatment of melanoma remains a challenge in advanced disease. Recently, the molecular differentiation in BRAF-mutated, NRAS-mutated and c-kit-mutated melanomas led to new treatment strategies. Different trials show that imatinib or nilotinib lead to meaningful responses in c-kit-mutated melanoma patients. There are little published data on sequential inhibition using these two drugs in melanoma. We describe the sequential use of imatinib after nilotinib in a c-kit-mutated melanoma patient, who progressed on interferon, Allovectin, dacarbazine, nilotinib and ipilimumab, and was finally treated with the c-kit inhibitor imatinib...
April 13, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28397975/the-jak2-stat5-signaling-pathway-as-a-potential-therapeutic-target-in-canine-mastocytoma
#2
Alexandra Keller, Bettina Wingelhofer, Barbara Peter, Karin Bauer, Daniela Berger, Susanne Gamperl, Martin Reifinger, Sabine Cerny-Reiterer, Richard Moriggl, Michael Willmann, Peter Valent, Emir Hadzijusufovic
BACKGROUND: Mastocytoma are frequently diagnosed cutaneous neoplasms in dogs. In non-resectable mastocytoma patients, novel targeted drugs are often applied. The transcription factor STAT5 has been implicated in the survival of human neoplastic mast cells (MC). Our study evaluated the JAK2/STAT5 pathway as a novel target in canine mastocytoma. MATERIALS AND METHODS: We employed inhibitors of JAK2 (R763, TG101348, AZD1480, ruxolitinib) and STAT5 (pimozide, piceatannol) and evaluated their effects on 2 mastocytoma cell lines, C2 and NI-1...
April 11, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28390196/pi3k-isoform-inhibition-associated-with-anti-bcr-abl-drugs-shows-in-vitro-increased-anti-leukemic-activity-in-philadelphia-chromosome-positive-b-acute-lymphoblastic-leukemia-cell-lines
#3
Simona Ultimo, Carolina Simioni, Alberto M Martelli, Giorgio Zauli, Camilla Evangelisti, Claudio Celeghini, James A McCubrey, Giorgia Marisi, Paola Ulivi, Silvano Capitani, Luca M Neri
B-acute lymphoblastic leukemia (B-ALL) is a malignant disorder characterized by the abnormal proliferation of B-cell progenitors. Philadelphia chromosome-positive (Ph+) B-ALL is a subtype that expresses the Bcr-Abl fusion protein which represents a negative prognostic factor. Constitutive activation of the phosphatidylinositol 3-kinase/Akt/mammalian target of rapamycin (PI3K/Akt/mTOR) network is a common feature of B-ALL, influencing cell growth and survival. In the present study, we aimed to investigate the efficacy of PI3K isoform inhibition in B-ALL cell lines harboring the Bcr-Abl fusion protein...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28378056/analysis-of-adverse-events-associated-with-dasatinib-and-nilotinib-treatments-in-chronic-phase-chronic-myeloid-leukemia-patients-outside-clinical-trials
#4
Koung Jin Suh, Ji Yun Lee, Dong-Yeop Shin, Youngil Koh, Soo-Mee Bang, Sung-Soo Yoon, Seonyang Park, Inho Kim, Jeong-Ok Lee
We analyzed adverse events (AEs) in 201 chronic phase CML patients treated with nilotinib (n = 120) or dasatinib (n = 81) as first- or second-line therapy. The dasatinib group had significantly higher grade 3-4 AEs compared to the nilotinib group (22 vs. 54%, p < 0.001), and had more frequent dose reduction, interruption, and discontinuation (p < 0.001, p = 0.004, and p = 0.006, respectively). Of 59 patients who discontinued treatment, 47 (80%) discontinued treatment due to AEs; 50% of the AEs causing drug discontinuation were of grade 2 severity...
April 4, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28377326/treatment-and-molecular-monitoring-update-in-chronic-myeloid-leukemia-management
#5
Nathalie Sorel, Émilie Cayssials, Françoise Brizard, Jean-Claude Chomel
Chronic myeloid leukemia (CML) is a myeloproliferative neoplasm resulting from the t(9;22)(q34;q11) translocation. It is characterized by the presence of the BCR-ABL1 fusion gene encoding the BCR-ABL oncoprotein characterized by a deregulated tyrosine kinase activity. Targeted therapies using tyrosine kinase inhibitors (TKI) such as imatinib, dasatinib, nilotinib, bosutinib, or ponatinib have profoundly changed the natural history of the disease with a major impact on survival. Indeed, most patients diagnosed today can enjoy a near normal life expectancy...
April 1, 2017: Annales de Biologie Clinique
https://www.readbyqxmd.com/read/28370445/media-hype-patient-and-scientific-perspectives-on-misleading-medical-news
#6
Israel Robledo, Joseph Jankovic
In this age of digital technology, Internet, and social media we are increasingly subjected to an information and disinformation overload. This includes not only political and economic information but also medical news, which is often presented as a "new discovery", "miracle cure" or some other press hyperbole. In this viewpoint article we present patient and scientific perspectives some recent episodes of medical hype related to Parkinson's disease research, including proposed therapies such as nilotinib, marijuana, stem cells and other controversial therapies that have attracted the mainstream and social media...
April 3, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28364360/impact-of-age-on-efficacy-and-toxicity-of-nilotinib-in-patients-with-chronic-myeloid-leukemia-in-chronic-phase-enest1st-subanalysis
#7
Francis J Giles, Delphine Rea, Gianantonio Rosti, Nicholas C P Cross, Juan Luis Steegmann, Laimonas Griskevicius, Philipp le Coutre, Daniel Coriu, Ljubomir Petrov, Gert J Ossenkoppele, Francois-Xavier Mahon, Susanne Saussele, Andrzej Hellmann, Perttu Koskenvesa, Tim H Brümmendorf, Gunther Gastl, Fausto Castagnetti, Beatrice Vincenzi, Jens Haenig, Andreas Hochhaus
PURPOSE: Achievement of deep molecular response with a tyrosine kinase inhibitor in patients with chronic myeloid leukemia (CML) is required to attempt discontinuation of therapy in these patients. The current subanalysis from the Evaluating Nilotinib Efficacy and Safety in Clinical Trials as First-Line Treatment (ENEST1st) study evaluated whether age has an impact on the achievement of deeper molecular responses or safety with frontline nilotinib in patients with CML. METHODS: ENEST1st is an open-label, multicenter, single-arm, prospective study of nilotinib 300 mg twice daily in patients with newly diagnosed CML in chronic phase...
March 31, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28349229/mpt0b002-a-novel-microtubule-inhibitor-downregulates-t315i-mutant-bcr-abl-and-induces-apoptosis-of-imatinib-resistant-chronic-myeloid-leukemia-cells
#8
Yi-Yen Yeh, Jing-Ping Liou, Yueh-Lun Lee, John Yi-Chung Lin, Huei-Mei Huang
Chronic myeloid leukemia (CML) is a hematopoietic malignancy caused by the constitutive activation of Bcr-Abl tyrosine kinase. The Bcr-Abl inhibitor imatinib and other second-generation tyrosine kinase inhibitors such as dasatinib and nilotinib have remarkable efficacy in CML treatment. However, gene mutation-mediated drug resistance remains a critical problem. Among point mutations, the Bcr-Abl T315I mutation confers resistance to these Bcr-Abl inhibitors. Previously, we have synthesized the compound (1-methyl-1H-indol-5-yl)-(3,4,5-trimethoxy-phenyl)-methanone (MPT0B002) as a novel microtubule inhibitor...
March 27, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28340283/comparative-analysis-of-pulmonary-hypertension-in-patients-treated-with-imatinib-nilotinib-and-dasatinib
#9
Mariko Minami, Takeshi Arita, Hiromi Iwasaki, Tsuyoshi Muta, Takatoshi Aoki, Kenichi Aoki, Satoshi Yamasaki, Takamitsu Matsushima, Koji Kato, Katsuto Takenaka, Kazuki Tanimoto, Tomohiko Kamimura, Ryosuke Ogawa, Koichi Akashi, Toshihiro Miyamoto
Pulmonary hypertension (PH) is a rare, but life-threatening, adverse event in patients treated with tyrosine kinase inhibitors (TKIs), such as dasatinib, but has not been fully evaluated in patients treated with imatinib or nilotinib. We used echocardiography to noninvasively assess the incidence of PH in 105 patients with chronic myeloid leukaemia (CML) treated with imatinib (n = 37), nilotinib (n = 30) or dasatinib (n = 38). The mean triscupid regurgitation peak gradient (TRPG), which reflects pulmonary arterial pressure, was 22·7 mmHg in the imatinib group, 23·1 mmHg in the nilotinib group and 23·4 mmHg for dasatinib group...
March 24, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28337541/tyrosine-kinase-inhibitor-therapy-induced-changes-in-humoral-immunity-in-patients-with-chronic-myeloid-leukemia
#10
Hanna L M Rajala, Mohamed El Missiry, Anniina Ruusila, Perttu Koskenvesa, Tim H Brümmendorf, Bjorn T Gjertsen, Jeroen Janssen, Kourosh Lotfi, Berit Markevärn, Ulla Olsson-Strömberg, Leif Stenke, Jesper Stentoft, Johan Richter, Henrik Hjorth-Hansen, Anna Kreutzman, Satu Mustjoki
PURPOSE: Tyrosine kinase inhibitors (TKIs) have well-characterized immunomodulatory effects on T and NK cells, but the effects on the humoral immunity are less well known. In this project, we studied TKI-induced changes in B cell-mediated immunity. METHODS: We collected peripheral blood (PB) and bone marrow (BM) samples from chronic myeloid leukemia (CML) patients before and during first-line imatinib (n = 20), dasatinib (n = 16), nilotinib (n = 8), and bosutinib (n = 12) treatment...
March 23, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28329763/the-allosteric-inhibitor-abl001-enables-dual-targeting-of-bcr-abl1
#11
Andrew A Wylie, Joseph Schoepfer, Wolfgang Jahnke, Sandra W Cowan-Jacob, Alice Loo, Pascal Furet, Andreas L Marzinzik, Xavier Pelle, Jerry Donovan, Wenjing Zhu, Silvia Buonamici, A Quamrul Hassan, Franco Lombardo, Varsha Iyer, Michael Palmer, Giuliano Berellini, Stephanie Dodd, Sanjeev Thohan, Hans Bitter, Susan Branford, David M Ross, Timothy P Hughes, Lilli Petruzzelli, K Gary Vanasse, Markus Warmuth, Francesco Hofmann, Nicholas J Keen, William R Sellers
Chronic myeloid leukaemia (CML) is driven by the activity of the BCR-ABL1 fusion oncoprotein. ABL1 kinase inhibitors have improved the clinical outcomes for patients with CML, with over 80% of patients treated with imatinib surviving for more than 10 years. Second-generation ABL1 kinase inhibitors induce more potent molecular responses in both previously untreated and imatinib-resistant patients with CML. Studies in patients with chronic-phase CML have shown that around 50% of patients who achieve and maintain undetectable BCR-ABL1 transcript levels for at least 2 years remain disease-free after the withdrawal of treatment...
March 22, 2017: Nature
https://www.readbyqxmd.com/read/28327988/efficacy-and-safety-of-nilotinib-in-patients-with-kit-mutated-metastatic-or-inoperable-melanoma-final-results-from-the-global-single-arm-phase-ii-team-trial
#12
J Guo, R D Carvajal, R Dummer, A Hauschild, A Daud, B C Bastian, S N Markovic, P Queirolo, A Arance, C Berking, V Camargo, D Herchenhorn, T M Petrella, D Schadendorf, W Sharfman, A Testori, S Novick, S Hertle, C Nourry, Q Chen, F S Hodi
Background.: The single-arm, phase II Tasigna Efficacy in Advanced Melanoma (TEAM) trial evaluated the KIT-selective tyrosine kinase inhibitor nilotinib in patients with KIT -mutated advanced melanoma without prior KIT inhibitor treatment. Patients and Methods.: Forty-two patients with KIT -mutated advanced melanoma were enrolled and treated with nilotinib 400 mg twice daily. TEAM originally included a comparator arm of dacarbazine (DTIC)-treated patients; the design was amended to a single-arm trial due to an observed low number of KIT -mutated melanomas...
March 6, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28327053/predictive-parameters-for-imatinib-failure-in-patients-with-chronic-myeloid-leukemia
#13
Danijela Lekovic, Mirjana Gotic, Natasa Milic, Biljana Zivojinovic, Jelica Jovanovic, Natasa Colovic, Violeta Milosevic, Andrija Bogdanovic
OBJECTIVE: Until recently, imatinib was the standard first-line treatment in chronic myeloid leukemia (CML). The inclusion of nilotinib and dasatinib as first-line options in CML raised a debate on treatment selection. The aim of our study was to analyze predictive parameters for imatinib response as the first-line treatment of CML patients. METHODS: The study included 168 consecutive patients with chronic phase Philadelphia-positive CML who were diagnosed and treated with Imatinib 400 mg once daily at a single university hospital...
March 22, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/28321124/combined-inhibition-of-%C3%AE-catenin-and-bcr-abl-synergistically-targets-tyrosine-kinase-inhibitor-resistant-blast-crisis-chronic-myeloid-leukemia-blasts-and-progenitors-in-vitro-and-in-vivo
#14
H Zhou, P Y Mak, H Mu, D H Mak, Z Zeng, J Cortes, Q Liu, M Andreeff, B Z Carter
Tyrosine kinase inhibitor (TKI) resistance and progression to blast crisis (BC), both related to persistent β-catenin activation, remain formidable challenges for chronic myeloid leukemia (CML). We observed overexpression of β-catenin in BC-CML stem/progenitor cells, particularly in granulocyte-macrophage progenitors, and highest among a novel CD34(+)CD38(+)CD123(hi)Tim-3(hi) subset as determined by CyTOF analysis. Co-culture with mesenchymal stromal cells (MSCs) induced the expression of β-catenin and its target CD44 in CML cells...
April 18, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28319280/nilotinib-induced-panniculitis-in-a-patient-with-chronic-myelogenous-leukemia
#15
Naomi Kitayama, Atsushi Otsuka, Chiaki Hamamoto, Yo Kaku, Hiroshi Shiragami, Yoshiyuki Okumura, Kaoru Tsujioka
Nilotinib is a second-generation tyrosine kinase inhibitors (TKIs) developed to target the bcr-abl protein for the treatment of chronic myelogenous leukemia (CML). [1] Nilotinib has been described as a well-tolerated drug. The most common non-hematologic side effects are skin rash, pruritus, headache, nausea, and fatigue. Cases of panniculitis induced by the other bcr-able TKIs such as imatinib, dasatinib and ponatinib were rarely described in the literature.[2-5] However, a case of panniculitis induced by nilotinib has not been reported...
March 20, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28316033/cardiovascular-complications-of-targeted-therapies-for-chronic-myeloid-leukemia
#16
REVIEW
Rongras Damrongwatanasuk, Michael G Fradley
The development of tyrosine kinase inhibitors (TKIs) dramatically changed the treatment landscape for many different cancers including chronic myeloid leukemia (CML). With the introduction of imatinib, the first TKI developed and approved to effectively treat CML, patient survival has increased dramatically and, in some cases, this fatal cancer can be managed as a chronic disease. Since the approval of imatinib in 2002, four additional TKIs have been developed to treat this disease including the second-generation TKIs nilotinib, dasatinib, and bosutinib and the third-generation TKI ponatinib...
April 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28300891/lichen-planopilaris-like-eruption-during-treatment-with-tyrosine-kinase-inhibitor-nilotinib
#17
Juliana Ribeiro Leitão, Neusa Yuriko Sakai Valente, Priscila Kakizaki, Isis Suga Veronez, Mario Cezar Pires
Tyrosine kinase inhibitors are effective as a target therapy for malignant neoplasms. Imatinib was the first tyrosine kinase inhibitor used. After its introduction, several other drugs have appeared with a similar mechanism of action, but less prone to causing resistance. Even though these drugs are selective, their toxicity does not exclusively target cancer cells, and skin toxicity is the most common non-hematologic adverse effect. We report an eruption similar to lichen planopilaris that developed during therapy with nilotinib, a second generation tyrosine kinase inhibitor, in a patient with chronic myeloid leukemia resistant to imatinib...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28298564/proteomic-analysis-of-sera-from-individuals-with-diffuse-cutaneous-systemic-sclerosis-reveals-a-multianalyte-signature-associated-with-clinical-improvement-during-imatinib-mesylate-treatment
#18
D James Haddon, Hannah E Wand, Justin A Jarrell, Robert F Spiera, Paul J Utz, Jessica K Gordon, Lorinda S Chung
OBJECTIVE: Imatinib has been investigated for the treatment of systemic sclerosis (SSc) because of its ability to inhibit the platelet-derived growth factor receptor and transforming growth factor-β signaling pathways, which have been implicated in SSc pathogenesis. In a 12-month open-label clinical trial assessing the safety and efficacy of imatinib in the treatment of diffuse cutaneous SSc (dcSSc), significant improvements in skin thickening were observed. Here, we report our analysis of sera collected during the clinical trial...
March 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28283715/label-free-visualization-of-nilotinib-functionalized-gold-nanoparticles-within-single-mammalian-cells-by-c60-sims-imaging
#19
Anna N Bloom, Hua Tian, Christian Schoen, Nicholas Winograd
Obtaining a comprehensive grasp of the behavior and interaction of pharmaceutical compounds within single cells provides some of the fundamental details necessary for more effective drug development. In particular, the changes ensuing in the carrier, drug, and host environment in targeted drug therapy applications must be explored in greater detail, as these are still not well understood. Here, nilotinib-functionalized gold nanoparticles are examined within single mammalian cells with use of imaging cluster secondary ion mass spectrometry in a model study designed to enhance our understanding of what occurs to these particles once that have been internalized...
March 10, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28283298/the-efficacy-of-generic-imatinib-as-first-and-second-line-therapy-3-year-follow-up-of-patients-with-chronic-myeloid-leukemia
#20
Erna Islamagic, Azra Hasic, Sabira Kurtovic, Emina Suljovic Hadzimesic, Lejla Mehinovic, Mirza Kozaric, Amina Kurtovic-Kozaric
INTRODUCTION: Generics of imatinib mesylate, the first tyrosine kinase inhibitor targeting the BCR-ABL1 fusion protein, have recently been approved in many countries as the alternative, low-cost forms for the treatment of patients with chronic myeloid leukemia (CML). The aim of this study was to evaluate the long-term clinical outcomes of patients with CML receiving first-line and second-line generic imatinib in Bosnia and Herzegovina. PATIENTS AND METHODS: This was a multicenter retrospective cohort study of patients (n = 41) treated with generic imatinib in Bosnia between September 1, 2013 and August 5, 2016...
February 16, 2017: Clinical Lymphoma, Myeloma & Leukemia
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