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https://www.readbyqxmd.com/read/28329763/the-allosteric-inhibitor-abl001-enables-dual-targeting-of-bcr-abl1
#1
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/28316033/cardiovascular-complications-of-targeted-therapies-for-chronic-myeloid-leukemia
#2
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/28279034/-clinical-significance-of-cytogenetic-monitoring-in-chronic-myeloid-leukemia
#3
C Y Pan, N Xu, B L He, R Cao, L B Liao, C X Yin, Y Q Lan, Z Y Lu, J X Huang, J Sun, R Feng, Q F Liu, X L Liu
Objective: To analyze the association of cytogenetic abnormalities with the prognosis of chronic myeloid leukemia (CML) patients in tyrosine kinase inhibitors (TKI) era. Methods: Karyotype analysis of chromosome G-banding was carried out in 387 newly diagnosed CML patients by short-term culture of bone marrow cells. The correlation of cytogenetic abnormalities and CML progression was explored in combination with ABL tyrosine point mutations. Result: Of 387 patients with positive BCR-ABL fusion gene assayed by fluorescence in situ hybridization (FISH) technique, 94...
February 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28275539/a-case-of-acute-myeloid-leukemia-with-e6a2-bcr-abl-fusion-transcript-acquired-after-progressing-from-chronic-myelomonocytic-leukemia
#4
Jinjuan Yao, Dan Douer, Lu Wang, Maria E Arcila, Khedoudja Nafa, April Chiu
Philadelphia (Ph) chromosome is a cytogenetic hallmark of chronic myeloid leukemia (CML). Most patients with CML harbor either the e13a2 or e14a2 BCR-ABL fusion product, while a small subset of the cases expresses e1a2 or e19a2 transcripts. We report a patient with chronic myelomonocytic leukemia (CMML), initially Ph chromosome negative at presentation, with rapid disease progression to acute myeloid leukemia (AML) and appearance of Ph chromosome and BCR-ABL e6a2, a very uncommon fusion transcript. The AML was refractory to treatment with subsequent emergence and dominance of a Ph negative leukemic clone...
2017: Leukemia Research Reports
https://www.readbyqxmd.com/read/28272671/hodgkin-lymphoma-in-a-case-of-chronic-myeloid-leukemia-treated-with-tyrosine-kinase-inhibitors
#5
Smeeta Gajendra, Archana Sharma, Rashi Sharma, Sunil Kumar Gupta, Nitin Sood, Ritesh Sachdev
Chronic myeloid leukemia (CML) is characterized by increased and unregulated proliferation of granulocytic lineage in the bone marrow and presence of these immature myeloid cells in the peripheral blood with presence of Philadelphia (Ph) chromosome. Tyrosine kinase inhibitors are the most important drugs in the CML therapy and provide long disease-free survival. Due to the increased survival of CML patients with continual administration of these drugs, the chance of development of secondary malignancies may increase...
February 4, 2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28050230/givinostat-a-type-ii-histone-deacetylase-inhibitor-induces-potent-caspase-dependent-apoptosis-in-human-lymphoblastic-leukemia
#6
Ying Li, Kevin Zhao, Chenjiao Yao, Samir Kahwash, Yan Tang, Guojiuan Zhang, Kara Patterson, Qi-En Wang, Weiqiang Zhao
Unlike chronic myeloid leukemia, patients with acute lymphoblastic leukemia (ALL) with Philadelphia chromosome (Ph+) do not respond well to Imatinib or tyrosine kinase inhibitors (TKI). In addition, TKI might induce resistant mutations in kinase domain (KD) of ABL in patients with relapsed diseases. Of the histone deacetylase (HDAC) inhibitors, suberoylanilide hydroxamic acid (SAHA) has shown to induce potent cytotoxicity on acute myeloid leukemia cell lines but Givinostat effect on acute lymphoblastic leukemia (ALL) has not been reported...
September 2016: Genes & Cancer
https://www.readbyqxmd.com/read/27880933/immunological-effects-of-nilotinib-prophylaxis-after-allogeneic-stem-cell-transplantation-in-patients-with-advanced-chronic-myeloid-leukemia-or-philadelphia-chromosome-positive-acute-lymphoblastic-leukemia
#7
Nira Varda-Bloom, Ivetta Danylesko, Roni Shouval, Shiran Eldror, Atar Lev, Jacqueline Davidson, Esther Rosenthal, Yulia Volchek, Noga Shem-Tov, Ronit Yerushalmi, Avichai Shimoni, Raz Somech, Arnon Nagler
Allogeneic stem cell transplantation remains the standard treatment for resistant advanced chronic myeloid leukemia and Philadelphia chromosome-positive acute lymphoblastic leukemia. Relapse is the major cause of treatment failure in both diseases. Post-allo-SCT administration of TKIs could potentially reduce relapse rates, but concerns regarding their effect on immune reconstitution have been raised. We aimed to assess immune functions of 12 advanced CML and Ph+ ALL patients who received post-allo-SCT nilotinib...
January 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/27581136/cml-mouse-model-generated-from-leukemia-stem-cells
#8
Yiguo Hu
Chronic myeloid leukemia (CML) is a myeloproliferative disorder with a high number of well-differentiated neutrophils in peripheral blood and myeloid cells in bone marrow (BM). CML is derived from the hematopoietic stem cells (HSCs) with the Philadelphia chromosome (Ph(+), t(9;22)-(q34;q11)), resulting in generating a fusion oncogene, BCR/ABL1. HSCs with Ph(+) are defined as leukemia stem cells (LSCs), a subpopulation cell at the apex of hierarchies in leukemia cells and responsible for the disease continuous propagation...
2016: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27581135/induction-of-chronic-myeloid-leukemia-in-mice
#9
Haojian Zhang, Shaoguang Li
Chronic myeloid leukemia (CML) is a myeloproliferative disorder derived from a hematopoietic stem cell (HSC), harboring Philadelphia chromosome (Ph chromosome). Formation of the Ph chromosome is caused by a reciprocal translocation between the chromosomes 9 and 22 t(9;22)(q34;q11), resulting in a fusion protein known as BCR-ABL which has constitutive tyrosine kinase activity and promotes the proliferation of leukemia cells via multiple mechanisms. Studies on CML have led to the identification of the first cancer-associated chromosomal abnormality and the subsequent development of tyrosine kinase inhibitors (TKIs) that inhibit BCR-ABL kinase activity in CML...
2016: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27570458/role-of-tyrosine-kinase-inhibitors-in-myeloproliferative-neoplasms-comparative-lessons-learned
#10
REVIEW
Javier Pinilla-Ibarz, Kendra L Sweet, Gabriela M Corrales-Yepez, Rami S Komrokji
An important pathogenetic distinction in the classification of myeloproliferative neoplasms (MPNs) is the presence or absence of the BCR-ABL fusion gene, which encodes a unique oncogenic tyrosine kinase. The BCR-ABL fusion, caused by the formation of the Philadelphia chromosome (Ph) through translocation, constitutes the disease-initiating event in chronic myeloid leukemia. The development of successive BCR-ABL-targeted tyrosine-kinase inhibitors has led to greatly improved outcomes in patients with chronic myeloid leukemia, including high rates of complete hematologic, cytogenetic, and molecular responses...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27531525/long-term-bosutinib-for-chronic-phase-chronic-myeloid-leukemia-after-failure-of-imatinib-plus-dasatinib-and-or-nilotinib
#11
Jorge E Cortes, Hanna J Khoury, Hagop M Kantarjian, Jeff H Lipton, Dong-Wook Kim, Philippe Schafhausen, Ewa Matczak, Eric Leip, Kay Noonan, Tim H Brümmendorf, Carlo Gambacorti-Passerini
Bosutinib is an Src/Abl tyrosine kinase inhibitor (TKI) indicated for adults with Ph+ chronic myeloid leukemia (CML) resistant/intolerant to prior TKIs. This long-term update of an ongoing phase 1/2 study evaluated the efficacy and safety of third-/fourth-line bosutinib in adults with chronic phase (CP) CML. Median durations of treatment and follow-up were 8.6 (range, 0.2-87.7) months and 32.7 (0.3-93.3) months, respectively. Cumulative confirmed complete hematologic response (cCHR) and major cytogenetic response (MCyR) rates were 74% (95% CI, 65-81%) and 40% (31-50%), respectively; Kaplan-Meier (K-M) probability of maintaining cCHR or MCyR at 4 years was 63% (95% CI, 50-73%) and 69% (52-81%)...
December 2016: American Journal of Hematology
https://www.readbyqxmd.com/read/27521331/imatinib-intolerance-is-associated-with-blastic-phase-development-in-philadelphia-chromosome-positive-chronic-myeloid-leukemia
#12
Jorge Luis Ángeles-Velázquez, Rafael Hurtado-Monroy, Pablo Vargas-Viveros, Silvia Carrillo-Muñoz, Myrna Candelaria-Hernández
BACKGROUND: Over the past years, the survival of patients with Philadelphia-positive chronic myeloid leukemia (CML Ph(+)) has increased as a result of therapy with tyrosin kinase inhibitors (TKIs). Intolerance to TKIs has been described in approximately 20% of patients receiving treatment. We studied the incidence of imatinib intolerance in patients with CML Ph(+) and their outcome in our CML reference site, as there is no information about the evolution of patients intolerant to TKIs...
August 2016: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/27509925/tyrosine-kinase-inhibitors-in-ph-chronic-myeloid-leukemia-therapy-a-review
#13
REVIEW
Krupa Shah, Sonia Parikh, Rakesh Rawal
Chronic myeloid leukaemia (CML) is a clonal myeloproliferative hematopoietic stem cell disorder. Deregulated BCRABL fusion tyrosine kinase activity is the main cause of CML disease pathogenesis, making BCRABL an ideal target for inhibition. Current tyrosine kinase inhibitors (TKIs) designed to inhibit BCRABL oncoprotein activity, have completely transformed the prognosis of CML. Interruption of TKI treatment leads to minimal residual disease reside (MRD), thought to reside in TKIinsensitive leukaemia stem cells which remain a potential reservoir for disease relapse...
2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27375361/chronic-myeloid-leukemia-in-nigerian-patients-anemia-is-an-independent-predictor-of-overall-survival
#14
Anthony A Oyekunle, Muheez A Durosinmi, Ramoni A Bolarinwa, Temilola Owojuyigbe, Lateef Salawu, Norah O Akinola
OBJECTIVES: The advent of the tyrosine kinase inhibitors has markedly changed the prognostic outlook for patients with Ph(+) and/or BCR-ABL1 (+) chronic myeloid leukemia (CML). This study was designed to assess the overall survival (OS) of Nigerian patients with CML receiving imatinib therapy and to identify the significant predictors of OS. METHODS: All patients with CML receiving imatinib from July 2003 to June 2013 were studied. The clinical and hematological parameters were studied...
2016: Clinical Medicine Insights. Blood Disorders
https://www.readbyqxmd.com/read/27346662/dasatinib-induced-colitis-after-allogeneic-stem-cell-transplantation-for-philadelphia-chromosome-positive-acute-lymphoblastic-leukemia
#15
Ibrahim Aldoss, Karl Gaal, Monzr M Al Malki, Haris Ali, Ryotaro Nakamura, Stephen J Forman, Vinod Pullarkat
The tyrosine kinase inhibitor dasatinib is often used after allogeneic hematopoietic cell transplantation to treat minimal residual disease in Philadelphia chromosome-positive (Ph+) acute lymphoblastic leukemia (ALL). Colitis, sometimes hemorrhagic, has occasionally been described with the use of dasatinib for both chronic myeloid leukemia and Ph+ ALL. The pathogenesis of dasatinib-induced colitis is unclear but may be related to effects of dasatinib on immune function. We describe a series of 5 patients who had 7 episodes of colitis during dasatinib use...
October 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27297665/does-post-transplant-maintenance-therapy-with-tyrosine-kinase-inhibitors-improve-outcomes-of-patients-with-high-risk-philadelphia-chromosome-positive-leukemia
#16
Zachariah DeFilipp, Amelia A Langston, Zhengjia Chen, Chao Zhang, Martha L Arellano, Fuad El Rassi, Christopher R Flowers, Vamsi K Kota, Zaid Al-Kadhimi, Rachel Veldman, Anand P Jillella, Sagar Lonial, Edmund K Waller, Hanna J Khoury
INTRODUCTION: The effect of post-transplant maintenance tyrosine kinase inhibitors (TKIs) on the outcomes of allogeneic hematopoietic stem cell transplantation in high-risk Philadelphia chromosome-positive (Ph(+)) leukemia remains unknown. PATIENTS AND METHODS: A retrospective analysis that included allograft recipients with accelerated phase and blast phase chronic myeloid leukemia or Ph(+) acute lymphoblastic leukemia who had received post-transplant maintenance TKI therapy from 2004 to 2014...
August 2016: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/27275226/detection-of-bcr-abl-translocation-in-bone-marrow-derived-mesenchymal-stem-cells-in-egyptian-cml-patients
#17
Taghrid Mohamed Gaafar, Inas Ismail Raafat, Azza Ahmed Aly, Nagwa Abd El-Ghaffar Mohamed, Reem Jan Farid, Neveen Ezzat Saad, Rabab El-Hawary, Naglaa Mostafaa, Mirhan Mohamed Ahmed
BACKGROUND: Chronic myeloid leukemia (CML) is a clonal myeloproliferative disorder of hematopoietic stem cells. It is characterized at the cytogenetic level by Philadelphia (ph) chromosome and at the molecular level by the BCR/ABL gene rearrangement. Bone marrow derived mesenchymal stem cells (MSCs) are pluripotent stem cells that can differentiate into several mesenchymal tissues. AIM: To observe the biological characteristics of MSCS from CML patients and to determine whether MSCs harbor the abnormal BCR/ABL translocation similar to CML bone marrow cells...
June 15, 2015: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/27221912/diagnosis-and-monitoring-of-chronic-myeloid-leukemia-chiang-mai-university-experience
#18
Adisak Tantiworawit, Supanat Kongjarern, Ekarat Rattarittamrong, Suree Lekawanvijit, Kanokkan Bumroongkit, Nonglak Boonma, Thanawat Rattanathammethee, Sasinee Hantrakool, Chatree Chai-Adisaksopha, Lalita Norasetthada
BACKGROUND: A diagnosis of chronic myeloid leukemia (CML) is made on discovery of the presence of a Philadelphia (Ph) chromosome. The success of the treatment of this form of leukemia with tyrosine kinase inhibitor (TKI) is monitored by reduction of the Ph chromosome. OBJECTIVE: To compare the role of conventional cytogenetic (CC) methods with a real time quantitative polymerase chain reaction (RQ-PCR) and fluorescence in situ hybridization (FISH) for diagnosis and treatment monitoring of CML patients...
2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27220663/effect-of-tyrosine-kinase-inhibitors-on-stemness-in-normal-and-chronic-myeloid-leukemia-cells
#19
L Charaf, F-X Mahon, I Lamrissi-Garcia, I Moranvillier, F Beliveau, B Cardinaud, S Dabernat, H de Verneuil, F Moreau-Gaudry, A Bedel
Although tyrosine kinase inhibitors (TKIs) efficiently cure chronic myeloid leukemia (CML), they can fail to eradicate CML stem cells (CML-SCs). The mechanisms responsible for CML-SC survival need to be understood for designing therapies. Several previous studies suggest that TKIs could modulate CML-SC quiescence. Unfortunately, CML-SCs are insufficiently available. Induced pluripotent stem cells (iPSCs) offer a promising alternative. In this work, we used iPSCs derived from CML patients (Ph+). Ph+ iPSC clones expressed lower levels of stemness markers than normal iPSCs...
January 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/27218866/the-treatment-of-cml-at-an-environment-with-limited-resources
#20
David Gómez-Almaguer, Olga G Cantú-Rodríguez, Cesar H Gutiérrez-Aguirre, Guillermo J Ruiz-Argüelles
OBJECTIVES: This article reviews clinical experiences in the treatment of chronic myeloid leukemia (CML) in an environment of limited resources. METHODS: We reviewed recent publications on Pub med and abstracts from mayor congresses relevant to the disease. RESULTS: CML is a hematological neoplasm observed more frequently in adults, regardless of their socioeconomic status. Until recently, available treatments improved patients' quality of life but did not modify survival...
December 2016: Hematology (Amsterdam, Netherlands)
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