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acute refractory myeloid leukemia

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https://www.readbyqxmd.com/read/28910610/platelet-transfusion-refractoriness-in-patients-with-acute-myeloid-leukemia-treated-by-intensive-chemotherapy
#1
Thibault Comont, Suzanne Tavitian, Laurent Bardiaux, Marylise Fort, Bénédicte Debiol, Danièle Morère, Emilie Bérard, Eric Delabesse, Isabelle Luquet, Salima Martinez, Françoise Huguet, Christian Récher, Sarah Bertoli
Platelet transfusion refractoriness (PTR) is a major adverse event in the management of acute myeloid leukemia (AML). In a series of 897 adult patients with AML receiving intensive chemotherapy, we identified 41 patients (4.8%) with PTR. PTR was more frequently observed in parous women, patients with extra-medullary disease, a low white blood cell count, an infection, or hemophagocytic syndrome. Among the 31 patients with anti-human leucocyte antigen (HLA) antibodies, an HLA-matched donor was identified for 18 patients (58...
August 30, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28900115/a-phase-ii-study-of-arginine-deiminase-adi-peg20-in-relapsed-refractory-or-poor-risk-acute-myeloid-leukemia-patients
#2
Hui-Jen Tsai, Shih Sheng Jiang, Wen-Chun Hung, Gautam Borthakur, Sheng-Fung Lin, Naveen Pemmaraju, Elias Jabbour, John S Bomalaski, Ya-Ping Chen, Hui-Hua Hsiao, Ming-Chung Wang, Ching-Yuan Kuo, Hung Chang, Su-Peng Yeh, Jorge Cortes, Li-Tzong Chen, Tsai-Yun Chen
Exogenous arginine is required for growth in some argininosuccinate synthetase (ASS)-deficient cancers. Arginine deiminase (ADI) inhibits growth in various ASS-deficient cancers by depleting arginine. The efficacy of pegylated ADI (ADI-PEG20) in relapsed/refractory/poor-risk acute myeloid leukemia (AML) was evaluated in 43 patients in a prospective, phase II trial (NCT01910012 (10/07/2013), https://clinicaltrials.gov/ct2/show/NCT01910012?term = ADI-PEG20&rank = 12 ). Despite almost all pre-treatment tumor samples showing ASS deficiency, the best response among 21 evaluable patients was complete response (CR) in 2 (9...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28886273/parpi-potentiates-with-current-conventional-therapy-in-mll-leukemia
#3
Lu Zhao, Chi Wai Eric So
Acute myeloid leukemias driven by MLL fusion proteins are commonly associated with poor prognosis and refractory treatment. Here, we provide evidence that olaparib can potentiate sensitivity of MLL leukemia cells to conventional chemotherapy and DNMT inhibitors offering new potential therapeutic strategies for MLL rearranged leukemias Using the primary mouse leukemia cells and human MLL-AF9 leukemic cell line, we demonstrate that treatment of MLL-AF9 leukemic cells with DNMT inhibitors or chemotherapies in combination with olaparib results in significant reduction in colony formation or cell growth while the single agent treatments had little impacts...
September 8, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28883081/haploidentical-hematopoietic-cell-transplantation-for-adult-acute-myeloid-leukemia-a-position-statement-from-the-acute-leukemia-working-party-of-the-european-society-for-blood-and-marrow-transplantation
#4
Catherine J Lee, Bipin N Savani, Mohamad Mohty, Myriam Labopin, Annalisa Ruggeri, Christoph Schmid, Frédéric Baron, Jordi Esteve, Norbert C Gorin, Sebastian Giebel, Fabio Ciceri, Arnon Nagler
Allogeneic blood or marrow hematopoietic cell transplantation continues to be the most potent anti-leukemic treatment for adult patients with standard or high-risk, or chemo-refractory acute myeloid leukemia. Until recently, this procedure was generally limited to those recipients who had an available matched-sibling donor or matched-unrelated donor. Technical advances in graft cell processing and manipulation, control of bidirectional T cell alloreactivity, graft-versus-host disease prophylaxis, and other supportive measures in haploidentical transplantation now enables nearly all patients with acute myeloid leukemia to benefit from the graft-versus-leukemia effect with substantial reduction in procedure-related mortality...
September 7, 2017: Haematologica
https://www.readbyqxmd.com/read/28881728/the-mtor-inhibitor-everolimus-in-combination-with-azacitidine-in-patients-with-relapsed-refractory-acute-myeloid-leukemia-a-phase-ib-ii-study
#5
Peter Tan, Ing Soo Tiong, Shaun Fleming, Giovanna Pomilio, Nik Cummings, Mark Droogleever, Julie McManus, Anthony Schwarer, John Catalano, Sushrut Patil, Sharon Avery, Andrew Spencer, Andrew Wei
Therapeutic options are limited in relapsed/refractory acute myeloid leukemia (AML). We evaluated the maximum tolerated dose (MTD) and preliminary efficacy of mammalian target of rapamycin (mTOR) inhibitor, everolimus (days 5-21) in combination with azacitidine 75 mg/m(2) subcutaneously (days 1-5 and 8-9 every 28 days) in 40 patients with relapsed (n = 27), primary refractory (n = 11) or elderly patients unfit for intensive chemotherapy (n = 2). MTD was not reached following everolimus dose escalation (2.5, 5 or 10 mg; n = 19) to the 10 mg dose level which was expanded (n = 21)...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28864289/phase-1-clinical-trial-of-adoptive-immunotherapy-using-off-the-shelf-activated-natural-killer-cells-in-patients-with-refractory-and-relapsed-acute-myeloid-leukemia
#6
Michael Boyiadzis, Mounzer Agha, Robert L Redner, Alison Sehgal, Annie Im, Jing-Zhou Hou, Rafic Farah, Kathleen A Dorritie, Anastasios Raptis, Seah H Lim, Hong Wang, Natalia Lapteva, Zhuyong Mei, Lisa H Butterfield, Cliona M Rooney, Theresa L Whiteside
BACKGROUND AIMS: Activated NK cells (aNK) generated by expansion of a human interleukin-2-dependent NK cell line (NK-92) were shown to mediate strong anti-leukemia activity. This phase 1 study evaluated feasibility, safety, and activity of aNK cells adoptively transferred to patients with refractory/relapsed acute myeloid leukemia (AML). In addition, effects of these aNK cells on the patient's immune system were evaluated. METHODS: Two cell-dose levels (1 × 10(9) cells/m(2) and 3 × 10(9) cells/m(2)) were used...
August 29, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28864170/flag-ida-regimen-as-bridge-therapy-to-allotransplantation-in-refractory-relapsed-acute-myeloid-leukemia-patients
#7
Mario Delia, Domenico Pastore, Paola Carluccio, Crescenza Pasciolla, Alessandra Ricco, Antonella Russo Rossi, Paola Casieri, Anna Mestice, Francesco Albano, Giorgina Specchia
BACKGROUND: Patients with primary refractory or first relapse acute myeloid leukemia (AML) are considered to have worse clinical outcomes after treatment. For these patients, the achievement of complete remission appears crucial for them to be able to undergo allotransplantation, which might be the only possible treatment. PATIENTS AND METHODS: We used the FLAG-Ida (fludarabine, cytarabine [cytosine arabinoside], granulocyte colony-stimulating factor, idarubicin) regimen in patients with primary refractory/first relapse AML as a bridge to transplantation...
June 19, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28860803/therapies-for-acute-myeloid-leukemia-vosaroxin
#8
REVIEW
Hamid Sayar, Parvaneh Bashardoust
Vosaroxin, a quinolone-derivative chemotherapeutic agent, was considered a promising drug for the treatment of acute myeloid leukemia (AML). Early-stage clinical trials with this agent led to a large randomized double-blind placebo-controlled study of vosaroxin in combination with intermediate-dose cytarabine for the treatment of relapsed or refractory AML. The study demonstrated better complete remission rates with vosaroxin, but there was no statistically significant overall survival benefit in the whole cohort...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28857842/relapsed-refractory-acute-myeloid-leukemia-any-progress
#9
Richard F Schlenk, Carsten Müller-Tidow, Axel Benner, Meinhard Kieser
PURPOSE OF REVIEW: Aim of this review was to focus on prognostic and predictive factors, standard and new treatment approaches, and on statistical considerations for future clinical trials in patients with relapsed/refractory acute myeloid leukemia (r/r-AML). RECENT FINDINGS: New prognostic molecular markers were identified in r/r-AML, FLT3-ITD, mutated IDH1, and biallelic CEBPA mutations. Intensive combination chemotherapy including gemtuzumab ozogamicin emerged as an effective salvage therapy in refractory AML...
August 28, 2017: Current Opinion in Oncology
https://www.readbyqxmd.com/read/28827408/hematopoietic-stem-cell-involvement-in-bcr-abl1-positive-all-as-potential-mechanism-of-resistance-to-blinatumomab-therapy
#10
Inga Nagel, Marius Bartels, Johannes Duell, Hans-Heinrich Oberg, Sandra Ussat, Henrike Bruckmueller, Oliver Ottmann, Heike Pfeifer, Heiko Trautmann, Nicola Gökbuget, Almuth Caliebe, Dieter Kabelitz, Michael Kneba, Heinz-August Horst, Dieter Hoelzer, Max S Topp, Ingolf Cascorbi, Reiner Siebert, Monika Brüggemann
The bispecific T-cell engager blinatumomab targeting CD19 can induce complete remission in relapsed or refractory B-cell precursor acute lymphoblastic leukemia (BCP-ALL). However, some patients ultimately relapse with loss of CD19-antigen on leukemic cells which has been established as a novel escape mechanism to CD19-specific immunotherapies. Here, we provide evidence that CD19-negative relapse after CD19-directed therapy in BCP-ALL may be due to selection of preexisting CD19-negative malignant progenitor cells...
August 21, 2017: Blood
https://www.readbyqxmd.com/read/28818952/enasidenib-approved-for-aml-but-best-uses-unclear
#11
(no author information available yet)
The FDA approved the targeted therapy enasidenib for patients with refractory or relapsed acute myeloid leukemia with mutant IDH2 The drug produces remissions in some patients and may reduce the need for blood transfusions, although researchers acknowledge that the FDA's approval came with less supporting evidence than usual.
August 17, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28814980/cooperative-effect-of-chidamide-and-chemotherapeutic-drugs-induce-apoptosis-by-dna-damage-accumulation-and-repair-defects-in-acute-myeloid-leukemia-stem-and-progenitor-cells
#12
Yin Li, Yan Wang, Yong Zhou, Jie Li, Kai Chen, Leisi Zhang, Manman Deng, Suqi Deng, Peng Li, Bing Xu
BACKGROUND: Many conventional chemotherapeutic drugs are known to be involved in DNA damage, thus ultimately leading to apoptosis of leukemic cells. However, they fail to completely eliminate leukemia stem cells (LSCs) due to their higher DNA repair capacity of cancer stem cells than that of bulk cancer cells, which becomes the root of drug resistance and leukemia recurrence. A new strategy to eliminate LSCs in acute myeloid leukemia (AML) is therefore urgently needed. RESULTS: We report that a low-dose chidamide, a novel orally active benzamide-type histone deacetylase (HDAC) inhibitor, which selectively targets HDACs 1, 2, 3, and 10, could enhance the cytotoxicity of DNA-damaging agents (daunorubicin, idarubicin, and cytarabine) in CD34(+)CD38(-) KG1α cells, CD34(+)CD38(-) Kasumi cells, and primary refractory or relapsed AML CD34(+) cells, reflected by the inhibition of cell proliferation, induction of apoptosis, and increase of cell cycle arrest in vitro...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28810561/cytotoxic-t-lymphocytes-promote-cytarabine-induced-acute-myeloid-leukemia-cell-apoptosis-via-inhibiting-bcl-2-expression
#13
Rui Deng, Fang-Yi Fan, Hai Yi, Li Fu, Yan Zeng, Yi Wang, Xiao-Juan Miao, Yan-Rong Shuai, Guang-Cui He, Yi Su
Acute myeloid leukemia (AML) remains difficult to cure due to its drug tolerance and refractoriness. Immunotherapy is a growing area of cancer research, which has been applied for the treatment of numerous types of cancer, including leukemia. The present study generated AML cell-specific cytotoxic T lymphocytes (CTLs) in vitro and investigated the effect of combining CTL treatment with one of the most commonly used drugs for the treatment of hematological malignancies, cytarabine, on AML cell apoptosis. Firstly, it was observed that monocyte-depleted peripheral blood lymphocytes from healthy donors could be used to generate large numbers of CD3(+)CD8(+) CTLs through immune stimulation...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28804680/treatment-of-older-patients-with-acute-myeloid-leukemia-aml-revised-canadian-consensus-guidelines
#14
REVIEW
Joseph M Brandwein, Nancy Zhu, Rajat Kumar, Brian Leber, Mitchell Sabloff, Irwindeep Sandhu, Jeannine Kassis, Harold J Olney, Mohamed Elemary, Andre C Schuh
The treatment of acute myeloid leukemia (AML) in older patients is undergoing rapid changes, with a number of important publications in the past five years. Because of this, a group of Canadian leukemia experts has produced an update to the Canadian Consensus Guidelines that were published in 2013, with several new agents recommended, subject to availability. Recent studies have supported the survival benefit of induction chemotherapy for patients under age 80, except those with major co-morbidities or those with adverse risk cytogenetics who are not candidates for allogeneic hematopoietic stem cell transplantation (HSCT)...
2017: American Journal of Blood Research
https://www.readbyqxmd.com/read/28802867/novel-single-cell-technologies-in-acute-myeloid-leukemia-research
#15
REVIEW
Soumyasri Das Gupta, Zohar Sachs
Acute myeloid leukemia (AML) is a lethal malignancy because patients who initially respond to chemotherapy eventually relapse with treatment refractory disease. Relapse is caused by leukemia stem cells (LSCs) that reestablish the disease through self-renewal. Self-renewal is the ability of a stem cell to produce copies of itself and give rise to progeny cells. Therefore, therapeutic strategies eradicating LSCs are essential to prevent relapse and achieve long-term remission in AML. AML is a heterogeneous disease both at phenotypic and genotypic levels, and this heterogeneity extends to LSCs...
July 25, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28799432/targeted-therapies-in-acute-myeloid-leukemia-a-focus-on-flt-3-inhibitors-and-abt199
#16
Kiran Naqvi, Marina Konopleva, Farhad Ravandi
Acute myeloid leukemia (AML) remains a therapeutic challenge. Despite ongoing research, the standard therapy for AML has not changed significantly in the past four decades. With the identification of cytogenetic and molecular abnormalities, several promising therapeutic agents are currently being investigated. FLT3 mutation is a well-recognized target seen in 30% of the cytogenetically normal AML. More recently, the BCL2 family of anti-apoptotic proteins have also generated great interest as a therapeutic target...
August 21, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28792686/viral-surveillance-using-pcr-during-treatment-of-aml-and-all
#17
Stephanie B Dixon, Adam Lane, Maureen M O'Brien, Karen C Burns, Jennifer L Mangino, Erin H Breese, Michael J Absalon, John P Perentesis, Christine L Phillips
BACKGROUND: While viral surveillance of cytomegalovirus (CMV), Epstein-Barr virus (EBV), and adenovirus using PCR is routine in patients undergoing hematopoetic stem cell transplant and solid organ transplant, the utility in the nontransplant pediatric leukemia population is unknown. Our institution screens patients with acute lymphoblastic leukemia (ALL) and acute myeloid leukemia (AML) for viral DNAemia by PCR as part of clinical care. PROCEDURE: This retrospective chart review included patients treated for newly diagnosed or relapsed AML or ALL between April 2010 and September 2014...
August 9, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28771903/fludarabine-cytarabine-g-csf-and-idarubicin-for-children-with-relapsed-aml
#18
Hideki Nakayama, Daisuke Tomizawa, Shiro Tanaka, Shotaro Iwamoto, Akira Shimada, Akiko M Saito, Yuka Yamashita, Hiroshi Moritake, Kiminori Terui, Takashi Taga, Hidemasa Matsuo, Yoshiyuki Kosaka, Katsuyoshi Koh, Hajime Hosoi, Hidemitsu Kurosawa, Keiichi Isoyama, Keizo Horibe, Shuki Mizutani, Souichi Adachi
BACKGROUND: The combination of fludarabine (Flu), high dose cytarabine (Ara-C) and granulocyte-colony stimulating factor (G-CSF) called "FLAG" with anthracyclines has become a standard chemotherapy for refractory acute myeloid leukemia (AML) in European children and adults. To clarify the efficacy and the safety of FLAG-idarubicin (IDA) for children prospectively, we planned a multicenter phase II study (AML-R11) by Japanese Pediatric Leukemia/Lymphoma Study Group. METHODS: Patients with AML at the age between 2 and 20 years old, who had the first bone marrow (BM) relapse or induction failure, were enrolled...
August 3, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28758276/brief-report-human-acute-myeloid-leukemia-reprograming-to-pluripotency-is-a-rare-event-and-selects-for-patient-hematopoietic-cells-devoid-of-leukemic-mutations
#19
Jong-Hee Lee, Kyle R Salci, Jennifer C Reid, Luca Orlando, Borko Tanasijevic, Zoya Shapovalova, Mickie Bhatia
Induced pluripotent stem cell reprogramming has provided critical insights into disease processes by modeling the genetics and related clinical pathophysiology. Human cancer represents highly diverse genetics, as well as inter- and intra-patient heterogeneity, where cellular model systems capable of capturing this disease complexity would be invaluable. Acute myeloid leukemia (AML) represents one of most heterogeneous cancers and has been divided into genetic subtypes correlated with unique risk stratification over the decades...
July 31, 2017: Stem Cells
https://www.readbyqxmd.com/read/28743264/recent-developments-in-immunotherapy-of-acute-myeloid-leukemia
#20
REVIEW
Felix S Lichtenegger, Christina Krupka, Sascha Haubner, Thomas Köhnke, Marion Subklewe
The advent of new immunotherapeutic agents in clinical practice has revolutionized cancer treatment in the past decade, both in oncology and hematology. The transfer of the immunotherapeutic concepts to the treatment of acute myeloid leukemia (AML) is hampered by various characteristics of the disease, including non-leukemia-restricted target antigen expression profile, low endogenous immune responses, and intrinsic resistance mechanisms of the leukemic blasts against immune responses. However, considerable progress has been made in this field in the past few years...
July 25, 2017: Journal of Hematology & Oncology
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