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https://www.readbyqxmd.com/read/28446278/-clinical-analysis-for-42-imatinib-resistant-patients-with-chronic-myelogenous-leukemia
#1
Xi Liu, Si-Lin Gan, Jie Ma, Yan-Fang Liu, Xin-Sheng Xie, Zhong-Xing Jiang, Yuan-Dong Cheng, Hui Sun
OBJECTIVE: To analyze the kinase mutation ratio, related factors, effectiveness and safety of the second generation drugs for imatinib-resistant patients with chronic myeloid leukemia(CML). METHODS: COX proportional hazard regression model was used for unvariate and multvariate analysis of various factors affecting the kinase mutation and for evaluating the effectiveness and safety of second generation tyrosine kinase inhibitor(TKI). RESULTS: 13 kinds of mutation were detected in 19 out of 42 cases for 22 times, including 4 times of F359V, 3 times of E255K, 2 time for F359C, F317L, T315I, Y253H, 1 time for D256R, C250R, D276G, F486S, M244V, Y256H and G250E, 3 cases with mixed mutations...
April 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28446239/dasatinib%C3%A2-%C3%A2-gefitinib-a-non-platinum-based-combination-with-enhanced-growth-inhibitory-anti-migratory-and-anti-invasive-potency-against-human-ovarian-cancer-cells
#2
Benoît Thibault, Bertrand Jean-Claude
BACKGROUND: Ovarian cancer is the leading cause of death for gynecological cancers and the 6th cause of women cancer death in developed countries. The late stage detection, the peritoneal dissemination and the acquisition of resistance against carboplatin are the main reasons to explain this poor prognosis and strengthen the need of alternative treatments to improve the management of ovarian cancer and/or to sensitize tumors to platinum salts. Epidermal growth factor receptor (EGFR), hepatocyte growth factor receptor (Met) and cellular Src kinase (c-Src) are crucial kinases implied in ovarian tumor growth, survival, invasion and resistance to carboplatin...
April 26, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28444835/cytomegalovirus-infection-and-dasatinib-induced-proteinuria-in-ph-all
#3
Hiroyuki Kawaguchi, Yoshiteru Tamura, Shuichi Suzuki, Takako Asano-Murakoshi, Shigeaki Nonoyama
No abstract text is available yet for this article.
April 25, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28444644/ponatinib-in-japanese-patients-with-philadelphia-chromosome-positive-leukemia-a-phase-1-2-study
#4
Arinobu Tojo, Taiichi Kyo, Kazuhito Yamamoto, Hirohisa Nakamae, Naoto Takahashi, Yukio Kobayashi, Tetsuzo Tauchi, Shinichiro Okamoto, Koichi Miyamura, Kiyohiko Hatake, Hiromi Iwasaki, Itaru Matsumura, Noriko Usui, Tomoki Naoe, Meera Tugnait, Narayana I Narasimhan, Stephanie Lustgarten, Heinrich Farin, Frank Haluska, Kazuma Ohyashiki
In this ongoing Phase 1/2 study (NCT01667133), we evaluated ponatinib and assessed its recommended dose in Japanese patients with chronic myeloid leukemia (CML) resistant/intolerant to dasatinib or nilotinib, or with Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph(+)ALL) resistant/intolerant to ≥1 tyrosine kinase inhibitor (TKI). The primary endpoints were safety of the recommended dose (Phase 1) and major cytogenetic response (MCyR) by 12 months in chronic-phase CML (CP-CML) patients or major hematologic response (MaHR) by 6 months in patients with advanced phase disease (Phase 2)...
April 25, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28444623/treatment-adherence-in-chronic-myeloid-leukaemia-patients-receiving-tyrosine-kinase-inhibitors
#5
Anna Rychter, Piotr Jerzmanowski, Adam Hołub, Zofia Specht-Szwoch, Violetta Kalinowska, Urszula Tęgowska, Ilona Seferyńska, Agnieszka Kołkowska-Leśniak, Ewa Lech-Marańda, Joanna Góra-Tybor
Failure to comply with treatment recommendations is very common in patients, but still poorly recognised by doctors. The current practice of using oral therapy on a large scale has been increasingly adopted for cancer patients. Chronic myeloid leukaemia (CML) is just such an example, where the introduction of taking new oral medications, the tyrosine kinase BCR-ABL inhibitors (TKI), has now revolutionised the treatment. The aim of our study was to assess treatment adherence in a group of Polish CML patients (a survey was conducted on 140 patient aged ≥18 years) treated with oral TKI (imatinib, dasatinib and nilotinib) taking into account the following variables: gender, age, education, place of residence, family circumstances and duration of therapy...
June 2017: Medical Oncology
https://www.readbyqxmd.com/read/28424749/development-of-asymmetric-facial-depigmentation-in-a-patient-treated-with-dasatinib-with-new-onset-hypovitaminosis-d-case-report-and-review-of-the-literature
#6
Kirsten C Webb, Magdalena Harasimowicz, Monica Janeczek, Jodi Speiser, James Swan, Rebecca Tung
Dasatinib is a second-generation tyrosine kinase inhibitor (TKI) used to treat imatinib-resistant chronic myelogenous leukemia (CML), as well as other Philadelphia chromosome-positive lymphoproliferative disorders. While the most commonly reported cutaneous side effects with this therapy include a morbilliform eruption, skin exfoliation, and skin irritation, pigmentary abnormalities have also been observed, albeit much more rarely. We present the case of a 72-year-old South Asian male with CML who presented with new-onset hypopigmentation of his face and scalp three years after a dose increase of dasatinib therapy, in the setting of newly discovered borderline hypovitaminosis D...
2017: Case Reports in Dermatological Medicine
https://www.readbyqxmd.com/read/28423730/the-sclttaxbcr-abl-transgenic-mouse-model-closely-reflects-the-differential-effects-of-dasatinib-on-normal-and-malignant-hematopoiesis-in-chronic-phase-cml-patients
#7
Claudia Schubert, Nicolas Chatain, Till Braunschweig, Mirle Schemionek, Kristina Feldberg, Melanie Hoffmann, Olli Dufva, Satu Mustjoki, Tim H Brümmendorf, Steffen Koschmieder
The second generation tyrosine kinase inhibitor (TKI) dasatinib is a clinically approved drug for chronic myeloid leukemia (CML) as well as Ph+ acute lymphoblastic leukemia. In addition to its antileukemic effects, dasatinib was shown to impact on normal hematopoiesis and cells of the immune system.Due to the fact that the murine in vivo studies so far have not been performed in a chronic-phase CML model under steady-state conditions, our aim was to study the hematopoietic effects of dasatinib (20 mg/kg p.o...
March 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28421151/extramedullary-relapse-in-a-cml-patient-after-allogeneic-stem-cell-transplantation
#8
Asu Fergun Yilmaz, Nur Soyer, Nazan Ozsan, Seckin Cagirgan, Ajda Gunes, Melda Comert, Fahri Sahin, Guray Saydam, Nur Selvi Gunel, Filiz Vural
Myeloid or granulocytic sarcoma (GS) is a tumoral lesion consisting of immature granulocytic cells. It is a rare entity during the course of CML patients especially after allogeneic stem cell transplantation (SCT). Relapse without bone marrow involvement is much rarer. We report a case of CML patient who relapsed with isolated granulocytic sarcoma after allogeneic SCT during cytogenetic and molecular remission. 28-year-old male was diagnosed as CML and allogeneic SCT was performed because of refractory disease to tyrosine kinase inhibitors...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28419210/dasatinib-use-and-risk-of-cytomegalovirus-reactivation-after-allogeneic-hematopoietic-cell-transplantation
#9
Daniel P Prestes, Esther Arbona, Alexandra Nevett-Fernandez, Ann E Woolley, Vincent T Ho, Sophia Koo, Lindsey R Baden, John Koreth, Sarah P Hammond, Nicolas C Issa, Francisco M Marty
Viral infections have been reported with dasatinib use, but its cytomegalovirus risk after hematopoietic-cell transplantation (HCT) is not known. We found that post-HCT dasatinib use increased the risk of cytomegalovirus reactivation (adjusted hazard ratio 7.65; 95% CI, 1.84-31.7), controlling for acute graft-versus-host disease, in 109 patients with Philadelphia-chromosome-positive malignancies.
April 13, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28400427/circulating-dna-demonstrates-convergent-evolution-and-common-resistance-mechanisms-during-treatment-of-colorectal-cancer
#10
Alain R Thierry, Brice Pastor, Zhi-Qin Jiang, Anastasia Katsiampoura, Christine Parseghian, Jonathan M Loree, Michael J Overman, Cynthia Sanchez, Safia El Messaoudi, Marc Ychou, Scott Kopetz
Purpose: Liquid biopsies allow the tracking of clonal dynamics and detection of mutations during treatment. <p>Experimental design: We evaluated under blinded conditions the ability of cell free DNA (cfDNA) to detect RAS/BRAF mutations in the plasma of 42 metastatic colorectal cancer patients treated on a phase Ib/II trial of FOLFOX and dasatinib, with or without cetuximab. Results: Prior to treatment, sequencing of archival tissue detected mutations in 25/42 patients (60%), while the cfDNA assay detected mutations in 37/42 patients (88%)...
April 11, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28399921/s100%C3%AE-as-a-serum-marker-in-endocrine-resistant-breast-cancer
#11
Sara Charmsaz, Éamon Hughes, Fiona T Bane, Paul Tibbitts, Marie McIlroy, Christopher Byrne, Sinéad Cocchiglia, Jean McBryan, Bryan T Hennessy, Róisín M Dwyer, Michael J Kerin, Arnold D Hill, Leonie S Young
BACKGROUND: Endocrine therapy is standard treatment for estrogen receptor (ER)-positive breast cancer. However, its efficacy is limited by intrinsic and acquired resistance. Here the potential of S100β as a biomarker and inhibition of its signaling network as a therapeutic strategy in endocrine treated patients was investigated. METHODS: The expression of S100β in tissue and serum was assessed by immunohistochemistry and an enzyme-linked immunosorbent assay, respectively...
April 12, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28396095/elderly-patients-with-chronic-myeloid-leukemia-benefit-from-a-dasatinib-dose-as-low-as-20-mg
#12
Hidekazu Itamura, Yasushi Kubota, Takero Shindo, Toshihiko Ando, Kensuke Kojima, Shinya Kimura
BACKGROUND: The clinical outcomes of patients with chronic myeloid leukemia (CML) treated with BCR-ABL tyrosine kinase inhibitors has improved markedly; however, the occurrence of adverse events (AEs) means that elderly patients often cannot be administered the standard dose. Nevertheless, some patients treated with low doses of tyrosine kinase inhibitor have achieved good molecular responses. PATIENTS AND METHODS: We retrospectively analyzed the efficacy and safety of low-dose dasatinib treatment of elderly CML patients...
March 18, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28395443/-clinical-analysis-of-adult-philadelphia-chromosome-positive-acute-lymphoblastic-leukemia-with-p16-gene-deletion
#13
B L He, N Xu, Y L Li, C Y Pan, R Cao, L B Liao, C X Yin, Y Q Lan, Z Y Lu, J X Huang, H S Zhou, Q F Liu, X L Liu
Objective: To investigate the clinical implications of p16 gene deletion in adult Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph(+) ALL) . Methods: Retrospective analysis of clinical, immunophenotypic, cytogenetics, molecular characteristics and prognosis of 80 newly diagnosed Ph(+) ALL patients with p16 deletion. Results: Of 80 adult Ph(+) ALL, the prevalence of p16 gene deletion was 31.3%. p16 gene deletion carriers frequently accompanied with high WBC counts (WBC≥30×10(9)/L) and CD20 expression...
March 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28384883/dasatinib-induced-cardiac-tamponade-a-rare-association
#14
Sushant Wattal, Mugula Sudhakar Rao, Gs Naveen Chandra, U K Abdul Razak, K Ranjan Shetty
Drug induced cardiac tamponade is rare. Therapy for imatinib resistant Chronic Myeloid Leukaemia (CML) is an emerging challenge in clinical haematology. For such cases treatment with second line tyrosine kinase inhibitors like dasatinib has resulted in improved outcomes. Dasatinib is a second line BCR-ABL tyrosine kinase inhibitor used in the treatment of Imatinib resistant or Imatinib intolerant CML. Dasatinib has been reported to cause severe pericardial effusions in 1% of all patients in clinical studies...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
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
#15
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
#16
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/28373111/pretreatment-with-rifampicin-and-tyrosine-kinase-inhibitor-dasatinib-potentiates-the-inhibitory-effects-toward-oatp1b1-and-oatp1b3-mediated-transport-without-affecting-plasma-membrane-localization-of-the-transporters
#17
Sonia Pahwa, Khondoker Alam, Alexandra Crowe, Taleah Farasyn, Sibylle Neuhoff, Oliver Hatley, Kai Ding, Wei Yue
Current studies determined the effects of pretreatment with rifampicin, an organic anion-transporting polypeptide (OATP) inhibitor, and the tyrosine kinase inhibitor dasatinib on OATP1B1- and OATP1B3-mediated transport, and to evaluate the OATP-mediated drug-drug interaction (DDI) potential of dasatinib using the static R-value and dynamic physiologically-based pharmacokinetic models. Rifampicin and dasatinib pretreatment significantly decreased OATP1B1- and OATP1B3-mediated transport. Rifampicin pretreatment also significantly decreased [(3)H]-pitavastatin and [(3)H]-CCK-8 accumulation in human sandwich-cultured hepatocytes...
March 31, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28352657/randomized-placebo-controlled-window-trial-of-egfr-src-or-combined-blockade-in-head-and-neck-cancer
#18
Julie E Bauman, Umamaheswar Duvvuri, William E Gooding, Tanya J Rath, Neil D Gross, John Song, Antonio Jimeno, Wendell G Yarbrough, Faye M Johnson, Lin Wang, Simion Chiosea, Malabika Sen, Jason Kass, Jonas T Johnson, Robert L Ferris, Seungwon Kim, Fred R Hirsch, Kimberly Ellison, John T Flaherty, Gordon B Mills, Jennifer R Grandis
BACKGROUND. EGFR and Src family kinases are upregulated in head and neck squamous cell carcinoma (HNSCC). EGFR interacts with Src to activate STAT3 signaling, and dual EGFR-Src targeting is synergistic in HNSCC preclinical models. pSrc overexpression predicted resistance to the EGFR inhibitor, erlotinib, in a prior window trial. We conducted a 4-arm window trial to identify biomarkers associated with response to EGFR and/or Src inhibition. METHODS. Patients with operable stage II-IVa HNSCC were randomized to 7-21 days of neoadjuvant erlotinib, the Src inhibitor dasatinib, the combination of both, or placebo...
March 23, 2017: JCI Insight
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
#19
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/28345929/utility-of-cyp3a4-and-pxr-car-cyp3a4-3a7-transgenic-mouse-models-to-assess-the-magnitude-of-cyp3a4-mediated-drug-drug-interactions
#20
Justin Q Ly, Kirsten Messick, Ann Qin, Ryan H Takahashi, Edna F Choo
Species differences in the expression, activity, regulation, and substrate specificity of metabolizing enzymes preclude the use of animal models to predict clinical drug-drug interactions (DDIs). The objective of this work is to determine if the transgenic (Tg) Cyp3a(-/-)Tg-3A4Hep/Int and Nr1i2/Nr1i3(-/-)-Cyp3a(-/-)Tg-PXR-CAR-3A4/3A7Hep/Int (PXR-CAR-CYP3A4/3A7) mouse models could be used to predict in vivo DDI of 10 drugs; alprazolam, bosutinib, crizotinib, dasatinib, gefitinib, ibrutinib, regorafenib, sorafenib, triazolam, and vandetinib (as victims); with varying magnitudes of reported CYP3A4 clinical DDI...
April 7, 2017: Molecular Pharmaceutics
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