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Acute myeloblastic leukemia

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https://www.readbyqxmd.com/read/29720577/universal-monitoring-of-minimal-residual-disease-in-acute-myeloid-leukemia
#1
Elaine Coustan-Smith, Guangchun Song, Sheila Shurtleff, Allen Eng-Juh Yeoh, Wee Joo Chng, Siew Peng Chen, Jeffrey E Rubnitz, Ching-Hon Pui, James R Downing, Dario Campana
BACKGROUND: Optimal management of acute myeloid leukemia (AML) requires monitoring of treatment response, but minimal residual disease (MRD) may escape detection. We sought to identify distinctive features of AML cells for universal MRD monitoring. METHODS: We compared genome-wide gene expression of AML cells from 157 patients with that of normal myeloblasts. Markers encoded by aberrantly expressed genes, including some previously associated with leukemia stem cells, were studied by flow cytometry in 240 patients with AML and in nonleukemic myeloblasts from 63 bone marrow samples...
May 3, 2018: JCI Insight
https://www.readbyqxmd.com/read/29720484/ubiquitin-dependent-degradation-of-cdk2-drives-the-therapeutic-differentiation-of-aml-by-targeting-prdx2
#2
Meidan Ying, Xuejing Shao, Hui Jing, Yujia Liu, Xiaotian Qi, Ji Cao, Yingqian Chen, Senfeng Xiang, Hua Song, Ronggui Hu, Guoqing Wei, Bo Yang, Qiaojun He
A distinct hallmark of acute myeloid leukemia (AML) is the arrest of leukemic myeloblasts at an immature stage of development. Therapies that overcome differentiation arrest have emerged as a powerful strategy for treating AML, but targeting leukemia differentiation remains challenging, mainly because of an incomplete mechanistic understanding of the process. Here, we unveil a new role for cyclin-dependent kinase 2 (CDK2) in blocking myeloid differentiation in AMLs. We show that among several interphase CDKs, only CDK2 undergoes ubiquitin-dependent proteasome degradation, which is accompanied by AML cell differentiation...
May 2, 2018: Blood
https://www.readbyqxmd.com/read/29695691/-identification-of-fusion-transcripts-in-leuk%C3%B0%C2%B5mic-cells-by-whole-transcriptome-sequencing
#3
A Yu Ikonnikova, Yu I Ammour, A V Snezhkina, G S Krasnov, A V Kudryavtseva, T V Nasedkina
Genetic aberrations in leukemia often lead to the formation of expressed chimeric genes, which should be assessed for proper diagnosis and therapy. Modern methods of molecular diagnostic mainly allow to identify already known fusion genes. RNAseq is an efficient tool for identification of rare and novel chimeric transcripts. Here we present the results of the whole transcriptome analysis of bone marrow samples from five patients with acute myeloblastic leukemia and one, with myelodysplastic syndrome. The whole-transcriptome analysis was performed using Illumina/Solexa approach...
March 2018: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/29687365/a-diagnostic-dilemma-in-the-emergency-room-intracranial-hemorrhages-in-acute-myeloblastic-leukemia-with-hyperleukocytosis
#4
Mustafa Kemal Demir
No abstract text is available yet for this article.
April 23, 2018: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/29684340/myeloid-sarcoma-with-megakaryoblastic-differentiation-presenting-as-a-breast-mass
#5
Ifeyinwa E Obiorah, Metin Ozdemirli
Myeloid sarcoma is an extramedullary tumor that consists of myeloblasts or immature myeloid cells. The neoplasm can occur in any part of the body, including the bone, periosteum, lymph nodes, skin, and soft tissue and they may occur de novo or in association with acute myeloid leukemia, myeloproliferative neoplasms and myelodysplastic syndromes. Most cases display a myelomonocytic or pure monoblastic morphology. Tumors with megakaryoblastic differentiation are extremely uncommon and may occur in association with transformation of a myeloproliferative disorder...
April 17, 2018: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/29670776/-kit-d816v-positive-acute-mast-cell-leukemia-associated-with-normal-karyotype-acute-myeloid-leukemia
#6
Marta Lopes, Maria Dos Anjos Teixeira, Cláudia Casais, Vanessa Mesquita, Patrícia Seabra, Renata Cabral, José Palla-García, Catarina Lau, João Rodrigues, Maria Jara-Acevedo, Inês Freitas, Jose Ramón Vizcaíno, Jorge Coutinho, Luis Escribano, Alberto Orfao, Margarida Lima
Introduction: Mast cell (MC) leukemia (MCL) is extremely rare. We present a case of MCL diagnosed concomitantly with acute myeloblastic leukemia (AML). Case Report: A 41-year-old woman presented with asthenia, anorexia, fever, epigastralgia, and diarrhea. She had a maculopapular skin rash, hepatosplenomegaly, retroperitoneal adenopathies, pancytopenia, 6% blast cells (BC) and 20% MC in the peripheral blood, elevated lactate dehydrogenase, cholestasis, hypoalbuminemia, hypogammaglobulinemia, and increased serum tryptase (184  μ g/L)...
2018: Case Reports in Hematology
https://www.readbyqxmd.com/read/29616647/epidemiology-of-malignant-hemopathies-recorded-in-hospitals-in-cameroon
#7
P T Moueleu Ngalagou, E Ngouadjeu Dongho Tsakeu, F Ngo Sack, E C Eboumbou Moukoko, Y Konn Jolly, H Luma
Data about malignant blood diseases are sparse in Cameroon. Their epidemiology was studied in patients at the General Hospital of Douala (GHD) and the Yaoundé Central Hospital (CHY) from 2004 through 2014. The variables we studied were social and demographic (age, sex, occupation, marital status), clinical (reasons for consultation, clinical signs, year of diagnosis), and biological (blood count, myelogram and blood smear, immunophenotyping, biopsy, and cytogenetics). In all, 4409 files were reviewed and 454 cases identified, documented and confirmed (248 in GHD and 206 in CHY)...
February 1, 2018: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/29496305/juvenile-myelomonocytic-leukemia-with-t-3-5-q25-q35-auer-rods-and-marked-myelodysplasia
#8
Weijie Li, Linda D Cooley, Keith August
Juvenile myelomonocytic leukemia (JMML) is a rare aggressive childhood leukemia characterized by an excess proliferation of cells of granulocytic and monocytic lineages. The WHO classifies JMML with the myelodysplastic/myeloproliferative neoplasms. Myelodysplasia in JMML is usually minimal to mild. Auer rods have never been reported in JMML. We present a 2-year-old boy with splenomegaly, leukocytosis, thrombocytopenia, anemia, and excess myeloblasts with easily seen Auer rods, and marked dysgranulopoiesis and dyserythropoiesis...
December 5, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/29474820/effects-of-two-doses-of-anti-t-lymphocyte-globulin-fresenius-given-after-full-match-sibling-stem-cell-transplantation-in-acute-myeloblastic-leukemia-patients-who-underwent-myeloablative-fludarabine-busulfan-conditioning
#9
Can Boga, Mahmut Yeral, Ciğdem Gereklioglu, Suheyl Asma, Erkan Maytalman, Pelin Aytan, Ilknur Kozanoglu, Cagla Sariturk, Hakan Ozdogu
OBJECTIVE/BACKGROUND: Anti-T lymphocyte globulin Fresenius (rATG-F; ATG-Fresenius) and antithymocyte globulin (thymoglobulin), which are included in transplant protocols, are used to reduce the risk of chronic graft-versus-host disease (cGVHD) or suppress allograft rejection. Available clinical studies have been conducted in heterogenous patient populations and with different administration protocols including stem cell sources. Additionally, the pharmacokinetics of ATG is variable, and the clinically effective dose of rATG-F, in particular, is not exactly known...
February 20, 2018: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/29415942/-initial-presentation-of-lymphoblastic-crisis-in-a-pediatric-chronic-myelogenous-leukemia-patient
#10
Kosuke Akiyama, Shohei Yamamoto, Yumiko Sugishita, Ryota Kaneko, Naoko Okamoto, Masaya Koganesawa, Sachio Fujita, Ryosuke Matsuno, Daisuke Toyama, Keiichi Isoyama
A 9-year-old girl was referred to our hospital because of facial palsy. Both physical and blood examination revealed hepatosplenomegaly and leukocytosis, respectively. A bone marrow examination demonstrated marked hypercellularity involving myeloblasts and lymphoblasts. Based on these results, we suspected mixed phenotype acute leukemia. However, her leukemic blasts expressed B-cell antigens, and a chromosomal analysis of her bone marrow cells revealed the following karyotype: 46, XX, t (9;22) (q34;q11.2). All her neutrophils were positive for the breakpoint cluster region-Abelson murine leukemia viral oncogene homolog 1 fusion protein...
2018: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/29391602/novel-identification-of-stat1-as-a-crucial-mediator-of-etv6-ntrk3-induced-tumorigenesis
#11
Jinah Park, Junil Kim, Bora Park, Kyung-Min Yang, Eun Jin Sun, Cristina E Tognon, Poul H Sorensen, Seong-Jin Kim
Chromosomal rearrangements that facilitate tumor formation and progression through activation of oncogenic tyrosine kinases are frequently observed in cancer. The ETV6-NTRK3 (EN) fusion has been implicated in various cancers, including infantile fibrosarcoma, secretory breast carcinoma, and acute myeloblastic leukemia, and has exhibited in vivo and in vitro transforming ability. In the present study, we analyzed transcriptome alterations using DNA microarray and RNA-Seq in EN-transduced NIH3T3 fibroblasts to identify the mechanisms that are involved in EN-mediated tumorigenesis...
April 2018: Oncogene
https://www.readbyqxmd.com/read/29389522/wnt-signaling-in-hematological-malignancies
#12
Stephanie Grainger, David Traver, Karl Willert
Leukemia and lymphoma are a wide encompassing term for a diverse set of blood malignancies that affect people of all ages and result in approximately 23,000 deaths in the United States per year (Siegel RL, Miller KD, Jemal A. Cancer statistics, 2016. CA Cancer J Clin. 2016;66(1):7-30.). Hematopoietic stem cells (HSCs) are tissue-specific stem cells at the apex of the hierarchy that gives rise to all of the terminally differentiated blood cells, through progressively restricted progenitor populations, a process that is known to be Wnt-responsive...
January 2018: Progress in Molecular Biology and Translational Science
https://www.readbyqxmd.com/read/29346478/differentiation-syndrome-associated-with-enasidenib-a-selective-inhibitor-of-mutant-isocitrate-dehydrogenase-2-analysis-of-a-phase-1-2-study
#13
Amir T Fathi, Courtney D DiNardo, Irina Kline, Laurie Kenvin, Ira Gupta, Eyal C Attar, Eytan M Stein, Stephane de Botton
Importance: Enasidenib mesylate, a mutant isocitrate dehydrogenase 2 (IDH2) protein inhibitor that promotes differentiation of leukemic myeloblasts, was recently approved by the US Food and Drug Administration for use in relapsed/refractory (R/R) mutant IDH2 acute myeloid leukemia (AML). During the first study of enasidenib in humans, a minority of patients with advanced myeloid neoplasms experienced unexpected signs/symptoms of a differentiation syndrome (DS), a potentially lethal entity...
January 18, 2018: JAMA Oncology
https://www.readbyqxmd.com/read/29296875/vaccination-with-autologous-myeloblasts-admixed-with-gm-k562-cells-in-patients-with-advanced-mds-or-aml-after-allogeneic-hsct
#14
Vincent T Ho, Haesook T Kim, Natalie Bavli, Martin Mihm, Olga Pozdnyakova, Matthias Piesche, Heather Daley, Carol Reynolds, Nicholas C Souders, Corey Cutler, John Koreth, Edwin P Alyea, Joseph H Antin, Jerome Ritz, Glenn Dranoff, Robert J Soiffer
We report a clinical trial testing vaccination of autologous myeloblasts admixed with granulocyte-macrophage colony-stimulating factor secreting K562 cells after allogeneic hematopoietic stem cell transplantation (HSCT). Patients with myelodysplastic syndrome (MDS) or acute myeloid leukemia (AML) with ≥5% marrow blasts underwent myeloblast collection before HSCT. At approximately day +30, 6 vaccines composed of irradiated autologous myeloblasts mixed with GM-K562 were administered. Tacrolimus-based graft-versus-host disease (GVHD) prophylaxis was not tapered until vaccine completion (∼day 100)...
November 14, 2017: Blood Advances
https://www.readbyqxmd.com/read/29282194/role-of-immune-status-in-chemotherapy-induced-transient-acantholytic-dermatosis
#15
Sogyong L Auh, Ingrid Polcari, Vesna Petronic-Rosic, Aisha Sethi
A 79-year-old man with a recent diagnosis of acute myeloblastic leukemia received induction chemotherapy with daunorubicin and cytarabine, plus moxifloxacin and fluconazole prophylaxis. Approximately 2 weeks later, an asymptomatic eruption appeared on his trunk. He then developed a neutropenic fever and was started on aztreonam, vancomycin, voriconazole, and amikacin and was transferred to our facility from an outside hospital. Micafungin was subsequently added, and the patient defervesced within a few days...
2017: Skinmed
https://www.readbyqxmd.com/read/29273895/smear-campaign-misattribution-of-pancytopenia-to-a-tick-borne-illness
#16
Jessica Lee, Soraya Azzawi, Michael J Peluso, Aaron Richterman, Haiyan Ramirez Batlle, Maria A Yialamas
We report the case of a 51-year-old woman presenting with a targetoid rash and pancytopenia after a tick bite. Initial evaluation was notable for severe neutropenia on the complete blood cell count differential, a positive Lyme IgM antibody, and a peripheral blood smear demonstrating atypical lymphocytes. While her pancytopenia was initially attributed to tick-borne illness, peripheral flow cytometry showed 7% myeloblasts, and a bone marrow biopsy confirmed 60% blasts. The patient was ultimately diagnosed with acute myelogenous leukemia, in addition to early, localized Lyme disease...
December 22, 2017: Journal of General Internal Medicine
https://www.readbyqxmd.com/read/29218734/prognostic-value-of-multicenter-flow-cytometry-harmonized-assessment-of-minimal-residual-disease-in-acute-myeloblastic-leukemia
#17
Francis Lacombe, Lydia Campos, Kaoutar Allou, Christine Arnoulet, Adrienne Delabarthe, Florent Dumezy, Jean Feuillard, Franck Geneviève, Estelle Guérin, Julien Guy, Hélène Jouault, Pascale Lepelley, Marc Maynadié, Françoise Solly, Orianne Wagner Ballon, Claude Preudhomme, André Baruchel, Hervé Dombret, Norbert Ifrah, Marie C Béné
The assessment of minimal residual disease (MRD) in acute myeloblastic leukemia is of growing interest as a prognostic marker of patients' outcome. Multiparameter flow cytometry (MFC), tracking leukemia-associated immunophenotypic patterns, has been shown in several studies to be a useful tool to investigate MRD. Here, we report a multicenter prospective study which allowed to define a harmonized analysis strategy, as well as the efficacy of MFC MRD to predict outcome. This study included 276 patients, in 10 different MFC centers, of whom 268 had at least 1 MRD check point...
December 7, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/29216917/unexpected-profile-of-sphingolipid-contents-in-blood-and-bone-marrow-plasma-collected-from-patients-diagnosed-with-acute-myeloid-leukemia
#18
Marzena Wątek, Bonita Durnaś, Tomasz Wollny, Marcin Pasiarski, Stanisław Góźdź, Michał Marzec, Anna Chabowska, Przemysław Wolak, Małgorzata Żendzian-Piotrowska, Robert Bucki
BACKGROUND: Impaired apoptotic pathways in leukemic cells enable them to grow in an uncontrolled way. Moreover, aberrations in the apoptotic pathways are the main factor of leukemic cells drug resistance. METHODS: To assess the presence of potential abnormalities that might promote dysfunction of leukemic cells growth, HPLC system was used to determine sphingosine (SFO), sphinganine (SFA), sphingosine-1-phosphate (S1P) and ceramide (CER) concentration in the blood collected from patients diagnose with acute myeloblastic leukemia (AML; n = 49) and compare to values of control (healthily) group (n = 51)...
December 8, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29167940/the-prognostic-value-of-circulating-myeloblasts-in-patients-with-myelodysplastic-syndromes
#19
Vu H Duong, Eric Padron, Najla H Al Ali, Jeffrey E Lancet, Jeff Hall, Brian Kwok, Ling Zhang, Pearlie K Epling-Burnette, Alan F List, Rami S Komrokji
The prognostic value of peripheral blasts (PB) is not well-studied in patients with myelodysplastic syndromes (MDS). We evaluated the impact of PB on overall survival (OS) and transformation to acute myeloid leukemia (AML) in a large cohort. The MDS database at the Moffitt Cancer Center was retrospectively reviewed to identify patients with ≥ 1% PB (PB-MDS) and those without PB (BM-MDS). We also assessed the correlation between PB and gene mutations. One thousand seven hundred fifty-eight patients were identified, among whom 13% had PB near the time of diagnosis...
February 2018: Annals of Hematology
https://www.readbyqxmd.com/read/29156756/mir-221-regulated-kit-level-by-wild-type-or-leukemia-mutant-runx1-a-determinant-of-single-myeloblast-fate-decisions-that-collectively-drives-or-hinders-granulopoiesis
#20
Stefano Rossetti, Michael J Anauo, Nicoletta Sacchi
RUNX1, a master transcription factor of hematopoiesis, was shown to orchestrate both cell proliferation and differentiation during granulopoiesis by regulating microRNAs (miRs). In this study, taking advantage of the miR-ON reporter system, we monitored first, how the granulocyte colony stimulation factor (GCSF) temporally modulates the concomitant level variation of miR-221 and one of its prototypic targets, the stem cell factor receptor KIT, in single 32DmiR-ON-221 myeloblasts expressing wild type RUNX1. Second, with the same reporter system we assessed how these temporal dynamics are affected by the t(8;21)(q22;q22) acute myelogenous leukemia mutant RUNX1-MTG8 (RM8) in single 32D-RM8miR-ON-221 myeloblasts...
October 17, 2017: Oncotarget
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