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TKI CML

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https://www.readbyqxmd.com/read/28902850/copy-number-variation-analysis-in-cytochromes-and-glutathione-s-transferases-may-predict-efficacy-of-tyrosine-kinase-inhibitors-in-chronic-myeloid-leukemia
#1
Alexander V Lavrov, Oksana A Ustaeva, Elmira P Adilgereeva, Svetlana A Smirnikhina, Ekaterina Y Chelysheva, Oleg A Shukhov, Yuriy V Shatokhin, Sergey V Mordanov, Anna G Turkina, Sergey I Kutsev
Chronic myeloid leukemia (CML) is a myeloproliferative disease characterized by the presence of BCR/ABL fusion gene in leukemic cells, which promotes uncontrolled cell proliferation. Up to 20% of CML patients show primary resistance or non-optimal response to tyrosine kinase inhibitor (TKI) therapy. We investigated the association between copy number variation (CNV) in glutathione S-transferases (GST) and cytochromes (CYP) and the response rate to TKI. We enrolled 47 patients with CML: 31 with an optimal response and 16 with failure at 6 months in accordance with European LeukemiaNet 2013 recommendations...
2017: PloS One
https://www.readbyqxmd.com/read/28894944/higher-out-of-pocket-expenses-for-tyrosine-kinase-inhibitor-therapy-is-associated-with-worse-health-related-quality-of-life-in-persons-with-chronic-myeloid-leukemia
#2
Qian Jiang, Haibo Wang, Lu Yu, Robert Peter Gale
PURPOSE: To explore health-related quality-of-life (HRQoL) profiles and identify socio-demographic and clinical variables associated with HRQoL in persons with chronic myeloid leukemia (CML) receiving tyrosine kinase inhibitors (TKIs). METHODS: A cross-sectional questionnaire was distributed to adults with chronic-phase CML receiving tyrosine kinase-inhibitor (TKI) therapy >3 months in complete cytogenetic response (CCyR). Respondents were anonymous. SF-36 Health Survey was used to measure HRQoL...
September 11, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28881589/decreased-calpain-activity-in-chronic-myeloid-leukemia-impairs-apoptosis-by-increasing-survivin-in-myeloid-progenitors-and-xiap1-in-differentiating-granulocytes
#3
Weiqi Huang, Ling Bei, Elizabeth E Hjort, Elizabeth A Eklund
Chronic Myeloid Leukemia (CML) is characterized by translocations between chromosomes 9 and 22, resulting in expression of Bcr-abl oncogenes. Although the clinical course of CML was revolutionized by development of Bcr-abl-directed tyrosine kinase inhibitors (TKIs), CML is not cured by these agents. Specifically, the majority of subjects relapsed in clinical trials attempting TKI discontinuation, suggesting persistence of leukemia stem cells (LSCs) even in molecular remission. Identifying mechanisms of CML-LSC persistence may suggest rationale therapeutic targets to augment TKI efficacy and lead to cure...
August 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28862699/cxorf48-is-a-potential-therapeutic-target-for-achieving-treatment-free-remission-in-cml-patients
#4
M Matsushita, K Ozawa, T Suzuki, M Nakamura, N Nakano, S Kanchi, D Ichikawa, E Matsuki, M Sakurai, D Karigane, H Kasahara, N Tsukamoto, T Shimizu, T Mori, H Nakajima, S Okamoto, Y Kawakami, Y Hattori
Although the introduction of tyrosine kinase inhibitors (TKIs) has improved overall survival of patients with chronic myeloid leukemia (CML), about half of the patients eventually relapse after cessation of TKIs. In contrast, the remainder of the patients maintain molecular remission without TKIs, indicating that the patients' immune system could control proliferation of TKI-resistant leukemic stem cells (LSCs). However, the precise mechanism of immunity against CML-LSCs is not fully understood. We have identified a novel immune target, CXorf48, expressed in LSCs of CML patients...
September 1, 2017: Blood Cancer Journal
https://www.readbyqxmd.com/read/28839396/nilotinib-induced-keratosis-pilaris-associated-with-alopecia-areata-and-eyebrow-thinning
#5
Maya Halabi Tawil, Rana El Khoury, Roland Tomb, Marwan Ghosn
Tyrosine kinase enzymes are an attractive target for anticancer therapies. Tyrosine kinase inhibitors (TKI) are well tolerated; somehow severe systemic side effects are rarely seen during treatment. Toxicities of skin and appendages may lead to poor compliance, psychosocial inconvenience, and drug interruption. Changes of the hair can arise following cures with TKI. Nilotinib, a second-generation TKI, has been responsible for various cutaneous side effects including different clinical presentations of alopecia (scarring and nonscarring forms)...
April 2017: International Journal of Trichology
https://www.readbyqxmd.com/read/28838287/introduction-of-second-generation-tyrosine-kinase-inhibitors-may-reduce-the-prognostic-impact-of-high-risk-patients-according-to-the-european-treatment-and-outcome-study-eutos-score
#6
Eriko Sato, Noriyoshi Iriyama, Michihide Tokuhira, Tomoiku Takaku, Maho Ishikawa, Tomonori Nakazato, Kei-Ji Sugimoto, Hiroyuki Fujita, Isao Fujioka, Norio Asou, Norio Komatsu, Masahiro Kizaki, Yoshihiro Hatta, Tatsuya Kawaguchi
Our study aims to highlight the critical role of the introduction of second generation tyrosine kinase inhibitors (2nd TKIs) on the prognosis of patients with chronic myeloid leukemia (CML) in chronic phase (CML-CP), as determined by European Treatment and Outcome Study (EUTOS) system. Patients who were diagnosed with CML-CP before March 2009 were classified into the imatinib group, and those diagnosed after April 2009 were classified into the 2nd TKI group. EUTOS high-risk patients exhibited significantly worse outcomes in terms of event-free survival (EFS), progression-free survival (PFS), and CML-associated death than those considered to be low-risk...
August 25, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28835440/clonal-chromosomal-abnormalities-appearing-in-philadelphia-negative-metaphases-during-cml-treatment
#7
Ghayas C Issa, Hagop Kantarjian, Graciela Nogueras Gonzalez, Gautam Borthakur, Guilin Tang, William Wierda, Koji Sasaki, Nicholas J Short, Farhad Ravandi, Tapan Kadia, Keyur Patel, Raja Luthra, Alessandra Ferrajoli, Guillermo Garcia-Manero, Mary Beth Rios, Sara Dellasala, Elias Jabbour, Jorge E Cortes
Clonal chromosomal abnormalities in Philadelphia chromosome-negative metaphases (CCA/Ph-) emerge as patients with chronic phase chronic myeloid leukemia (CP-CML) are treated with tyrosine kinase inhibitors (TKI). We assessed the characteristics and prognostic impact of 598 patients with CP-CML treated on clinical trials with various TKIs. CCA/Ph- occurred in 58 patients (10%) and the most common were - Y in 25 (43%) and trisomy 8 in 7 patients (12%). Response to TKI therapy was similar for patients with CCA/Ph- and those without additional chromosomal abnormalities (ACAs)...
August 23, 2017: Blood
https://www.readbyqxmd.com/read/28815757/first-line-treatment-selection-and-early-monitoring-patterns-in-chronic-phase-chronic-myeloid-leukemia-in-routine-clinical-practice-simplicity
#8
Stuart L Goldberg, Jorge Cortes, Carlo Gambacorti-Passerini, Rüdiger Hehlmann, H Jean Khoury, Mauricette Michallet, Ron Paquette, Bengt Simonsson, Teresa Zyczynski, Aimee Foreman, Elisabetta Abruzzese, David Andorsky, Aart Beeker, Pascale Cony-Makhoul, Richard Hansen, Elza Lomaia, Eduardo Olavarria, Michael Mauro
Achieving successful outcomes in chronic phase-chronic myeloid leukemia (CP-CML) requires careful monitoring of cytogenetic/molecular responses (CyR/MR). SIMPLICITY (NCT01244750) is an observational study exploring tyrosine kinase inhibitor use and management patterns in patients with CP-CML receiving first-line imatinib (n=416), dasatinib (n=418) or nilotinib (n=408) in the US and 6 European countries in routine clinical practice. Twelve-month follow-up data of 1,242 prospective patients (enrolled October 01 2010-September 02 2015) are reported...
August 17, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28808483/therapeutic-immune-monitoring-of-cd4-cd25-t-cells-in-chronic-myeloid-leukemia-patients-treated-with-tyrosine-kinase-inhibitors
#9
Ziyuan Lu, Na Xu, Xuan Zhou, Guanlun Gao, Lin Li, Jixian Huang, Yuling Li, Qisi Lu, Bolin He, Chengyun Pan, Xiaoli Liu
Tyrosine kinase inhibitors (TKIs), including imatinib, dasatinib and nilotinib, are effective forms of therapy for various types of solid cancers and Philadelphia chromosome-positive (Ph(+)) chronic myeloid leukemia. A number of TKIs have been known to have strong effects on T cells, particularly cluster of differentiation (CD) 4(+)CD25(+) T cells, also known as regulatory T cells (Tregs). There is currently a deficit in the available clinical data regarding this area of study. In the present study, a total of 108 peripheral blood samples were collected from patients with chronic myeloid leukemia (CML) at diagnosis (n=31), and at 3 and 6 months following treatment with TKI [imatinib (n=12), dasatinib (n=11) and nilotinib groups (n=8)] and healthy controls (n=15)...
August 2017: Oncology Letters
https://www.readbyqxmd.com/read/28804122/shp2-is-required-for-bcr-abl1-induced-hematologic-neoplasia
#10
S Gu, A Sayad, G Chan, W Yang, Z Lu, C Virtanen, R A Van Etten, B G Neel
BCR-ABL1-targeting tyrosine kinase inhibitors (TKIs) have revolutionized treatment of Philadelphia chromosome-positive (Ph(+)) hematologic neoplasms. Nevertheless, acquired TKI resistance remains a major problem in chronic myeloid leukemia (CML), and TKIs are less effective against Ph(+) B-cell acute lymphoblastic leukemia (B-ALL). GAB2, a scaffolding adaptor that binds and activates SHP2, is essential for leukemogenesis by BCR-ABL1, and a GAB2 mutant lacking SHP2 binding cannot mediate leukemogenesis. Using a genetic loss-of-function approach and bone marrow transplantation models for CML and BCR-ABL1(+) B-ALL, we show that SHP2 is required for BCR-ABL1-evoked myeloid and lymphoid neoplasia...
August 14, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28801986/persistent-detection-of-alternatively-spliced-bcr-abl-variant-results-in-a-failure-to-achieve-deep-molecular-response
#11
Junichiro Yuda, Toshihiro Miyamoto, Jun Odawara, Yasuyuki Ohkawa, Yuichiro Semba, Masayasu Hayashi, Koichi Miyamura, Mitsune Tanimoto, Kazuhito Yamamoto, Masafumi Taniwaki, Koichi Akashi
Treatment with tyrosine kinase inhibitors (TKIs) may sequentially induce TKI-resistant BCR-ABL mutants in chronic myeloid leukemia (CML). Conventional polymerase chain reaction (PCR) monitoring of BCR-ABL is an important indicator to determine therapeutic intervention for preventing disease progression. However, PCR cannot quantify separately amounts of BCR-ABL and its mutants, including alternatively spliced BCR-ABL with an insertion of 35 intronic nucleotides (BCR-ABL(I)(ns35bp) ) between ABL exons 8 and 9 which introduces the premature termination and loss of kinase activity...
August 12, 2017: Cancer Science
https://www.readbyqxmd.com/read/28774214/the-safety-of-bosutinib-for-the-treatment-of-chronic-myeloid-leukemia
#12
Jee Hyun Kong, H J Khoury, Audrey Sunwha Kim, Brittany Gray Hill, Vamsi Kota
Tyrosine kinase inhibitors (TKIs) are a potentially lifelong treatment for patients with chronic myeloid leukemia (CML). Adverse events (AEs) associated with TKIs are significant impediments in the daily life of patients that can impact compliance, and efficacy. Areas covered: This is a review on safety of bosutinib in the treatment of chronic phase CML. Data is extracted from the latest updates of bosutinib phase I/II and III trials. Expert opinion: Bosutinib is an effective agent against all phases of CML presently approved for the treatment in patients with resistance or intolerance to prior TKI therapy...
September 5, 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/28760296/analysis-of-survival-of-patients-with-chronic-myeloid-leukemia-treated-with-imatinib-in-the-last-15-years-in-lebanon
#13
Marcel Massoud, Riwa Sakr, Fouad Kerbage, Joseph Makdissi, Jenny Hawi, Layale Rached, Fady Nasr, Georges Chahine
BACKGROUND: In the 2000s, the introduction of the tyrosine kinase inhibitor (TKI), imatinib, improved the survival outcomes of patients with chronic myeloid leukemia (CML). In Lebanon, we rapidly adopted this treatment strategy. To the best of our knowledge, this is the first study reporting the survival rates of Lebanese CML patients. We examined the rates of major molecular response (MMR) and complete cytogenetic response (CCyR) and analyzed the overall survival, progression-free survival, and event-free survival of CML patients treated with front-line imatinib in 3 university hospitals in Lebanon...
July 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28757432/genetic-risk-of-prediabetes-and-diabetes-development-in-chronic-myeloid-leukemia-patients-treated-with-nilotinib
#14
Bruno Martino, Corrado Mammì, Claudia Labate, Silvia Rodi, Domenica Ielo, Manuela Priolo, Maurizio Postorino, Giovanni Tripepi, Francesca Ronco, Carmelo Laganà, Caterina Musolino, Marianna Greco, Giorgio La Nasa, Giovanni Caocci
Impaired fasting glucose and type 2 diabetes represent adverse events in patients with chronic myeloid leukemia (CML) treated with the second generation tyrosine kinase inhibitor nilotinib. An unweighted genetic risk score (uGRS) for the prediction of insulin resistance, consisting of 10 multiple single-nucleotide polymorphisms, has been proposed. We evaluated uGRS predictivity in 61 CML patients treated with nilotinib. Patients were genotyped for IRS1, GRB14, ARL15, PPARG, PEPD, ANKRD55/MAP3K1, PDGFC, LYPLAL1, RSPO3, and FAM13A1 genes...
July 28, 2017: Experimental Hematology
https://www.readbyqxmd.com/read/28743166/second-tyrosine-kinase-inhibitor-discontinuation-attempt-in-patients-with-chronic-myeloid-leukemia
#15
Laurence Legros, Franck E Nicolini, Gabriel Etienne, Philippe Rousselot, Delphine Rea, Stéphane Giraudier, Agnès Guerci-Bresler, Françoise Huguet, Martine Gardembas, Martine Escoffre, Jean-Christophe Ianotto, Marie-Pierre Noël, Bruno R Varet, Thomas Pagliardini, Irit Touitou, Stéphane Morisset, Francois-Xavier Mahon
BACKGROUND: Several studies have demonstrated that approximately one-half of patients with chronic myeloid leukemia (CML) who receive treatment with tyrosine kinase inhibitors (TKIs) and achieve and maintain a deep molecular response (DMR) are able to successfully discontinue therapy. In patients who have a molecular relapse, a DMR is rapidly regained upon treatment re-initiation. METHODS: The authors report the results from RE-STIM, a French observational, multicenter study that evaluated treatment-free remission (TFR) in 70 patients who re-attempted TKI discontinuation after a first unsuccessful attempt...
July 25, 2017: Cancer
https://www.readbyqxmd.com/read/28743165/prognostic-factors-and-survival-outcomes-in-patients-with-chronic-myeloid-leukemia-in-blast-phase-in-the-tyrosine-kinase-inhibitor-era-cohort-study-of-477-patients
#16
Preetesh Jain, Hagop M Kantarjian, Ahmad Ghorab, Koji Sasaki, Elias J Jabbour, Graciela Nogueras Gonzalez, Rashmi Kanagal-Shamanna, Ghayas C Issa, Guillermo Garcia-Manero, Devendra Kc, Sara Dellasala, Sherry Pierce, Marina Konopleva, William G Wierda, Srdan Verstovsek, Naval G Daver, Tapan M Kadia, Gautam Borthakur, Susan O'Brien, Zeev Estrov, Farhad Ravandi, Jorge E Cortes
BACKGROUND: Outcomes in patients with chronic myeloid leukemia in blast phase (CML-BP) are historically dismal. Herein, the authors sought to analyze the characteristics, prognostic factors, and survival outcomes in patients with CML-BP in the tyrosine kinase inhibitor (TKI) era. METHODS: A total of 477 patients with CML-BP were treated with a TKI at some point during the course of their CML. Cox proportional hazard models identified characteristics that were predictive of survival...
July 25, 2017: Cancer
https://www.readbyqxmd.com/read/28742419/insights-into-the-management-of-chronic-myeloid-leukemia-in-resource-poor-settings-a-mexican-perspective
#17
Andrés Gomez-de-León, David Gómez-Almaguer, Guillermo J Ruiz-Delgado, Guillermo J Ruiz-Arguelles
The arrival of targeted therapy for chronic myeloid leukemia (CML) was revolutionary. However, due to the high cost of tyrosine kinase inhibitors, access to this highly effective therapy with strict monitoring strategies is limited in low to middle-income countries. In this context, following standard recommendations proposed by experts in developed countries is difficult. Areas covered: This review aims to provide an insight into the management of patients with CML living in a resource-limited setting. It addresses several issues: diagnosis, initial treatment, disease monitoring, and additional treatment alternatives including allogeneic hematopoietic stem cell transplantation...
August 3, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28721056/onset-of-chronic-myeloid-leukemia-with-complex-karyotype-in-a-pregnant-patient-case-report-and-revision-of-literature
#18
Nicola Sgherza, Elisabetta Abruzzese, Gianni Perla, Maria Marta Minervini, Vincenzo Chiello, Natale Sciannamè, Nicola Cascavilla
Approximately 10%-12% of patients in chronic-phase chronic myeloid leukemia (CP-CML) have additional chromosomal aberrations at diagnosis; moreover, CML occurs in up to 10% of pregnancy-associated leukemias, with an annual incidence of 1 per 100,000 pregnancies. In this report we describe the case of a 36-year-old female with CP-CML diagnosed in the 18th week of pregnancy and with a new complex variant translocation t(4;9;22;21)(q24;q34;q11;q22) and an additional chromosomal aberration t(1;20)(p36;p11). In consideration of her pregnancy, the patient strictly monitored her blood cell count without any specific treatment...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28719608/cholesterol-esterification-inhibition-and-imatinib-treatment-synergistically-inhibit-growth-of-bcr-abl-mutation-independent-resistant-chronic-myelogenous-leukemia
#19
Shovik Bandyopadhyay, Junjie Li, Elie Traer, Jeffrey W Tyner, Amy Zhou, Stephen T Oh, Ji-Xin Cheng
Since the advent of tyrosine kinase inhibitors (TKIs) such as imatinib, nilotinib, and dasatinib, chronic myelogenous leukemia (CML) prognosis has improved greatly. However, ~30-40% of patients develop resistance to imatinib therapy. Although most resistance is caused by mutations in the BCR-ABL kinase domain, 50-85% of these patients develop resistance in the absence of new mutations. In these cases, targeting other pathways may be needed to regain clinical response. Using label-free Raman spectromicroscopy, we evaluated a number of leukemia cell lines and discovered an aberrant accumulation of cholesteryl ester (CE) in CML, which was found to be a result of BCR-ABL kinase activity...
2017: PloS One
https://www.readbyqxmd.com/read/28706179/nilotinib-induced-recurrent-gastric-polyps-case-report-and-review-of-literature
#20
Nancy Kassem, Omar M Ismail, Halima Elomri, Mohamad A Yassin
BACKGROUND Tyrosine kinase inhibitors (TKIs) are currently an important targeted drug class in the treatment of chronic myeloid leukemia (CML). Imatinib was the first approved TKI for CML in 2001. Nilotinib is a second-generation TKI, approved in 2007; it inhibits BCR-ABL, PDGFR, and c-KIT, and is 30 times more potent than imatinib. Tyrosine kinase enzymes are expressed in multiple tissues and are involved in several signaling pathways; they have been shown to have several off-target side effects. CASE REPORT We report a case of an elderly male with CML and no history of gastrointestinal diseases, treated with nilotinib, and developed recurrent gastric polyps after three years of treatment...
July 14, 2017: American Journal of Case Reports
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