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https://www.readbyqxmd.com/read/28106288/nuclear-inositide-signaling-via-phospholipase-c
#1
Stefano Ratti, Sara Mongiorgi, Giulia Ramazzotti, Matilde Y Follo, Giulia A Mariani, Pann-Ghill Suh, James A McCubrey, Lucio Cocco, Lucia Manzoli
The existence of an independent nuclear inositide pathway distinct from the cytoplasmic one has been demonstrated in different physiological systems and in diseases. In this prospect we analyze the role of PI-PLCβ1 nuclear isoform in relation to the cell cycle regulation, the cell differentiation and different physiopathological pathways focusing on the importance of the nuclear localization from both molecular and clinical point of view. PI-PLCβ1 is essential for G1/S transition through DAG and Cyclin D3 and plays also a central role in G2/M progression through Cyclin B1 and PKCα...
January 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28103645/prognostic-impact-of-lymphocyte-subpopulations-in-peripheral-blood-after-hematopoietic-stem-cell-transplantation-for-hematologic-malignancies
#2
Sang Hyuk Park, Chan-Jeoung Park, Borae G Park, Mi-Hyun Bae, Bo-Hyun Kim, Young-Uk Cho, Seongsoo Jang, Ae Ja Park, Dae-Young Kim, Jung-Hee Lee, Je-Hwan Lee, Kyoo-Hyung Lee
BACKGROUND: We prospectively evaluated prognostic value of lymphocyte subpopulations in peripheral blood of allogeneic hematopoietic stem cell transplant (HSCT)-recipients. METHODS: 113 allogeneic HSCT (47 sibling matched, 37 unrelated matched, 29 haploidentical)-performed patients diagnosed as AML (n=66), ALL (n=28) and MDS (n=19) were prospectively enrolled. 14 lymphocyte subpopulations were quantified by flow cytometry of PB at specific time-points after HSCT, and their prognostic impacts were analyzed...
January 19, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28054397/conventional-cytogenetics-for-myeloid-neoplasms-in-the-era-of-next-generation-sequencing
#3
Frank C Kuo, David P Steensma, Paola Dal Cin
In this issue of the American Journal of Hematology, Weinberg et al.(1) discuss how multiple diagnostic techniques should be integrated in the diagnosis of acute myeloid leukemia (AML) and the risk stratification of patients.Ever since the discovery of Philadelphia chromosome more than 50 years ago(2) , conventional cytogenetic assays, including karyotype and fluorescent in situ hybridization (FISH), have played a critical role in classification, diagnosis and management of AML and other myeloid neoplasms. Most, if not all, of the recurrent chromosomal rearrangements commonly seen in AML are now well-described and the genes involved in these rearrangements have been identified...
January 5, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28052028/establishment-and-characterization-of-hypomethylating-agent-resistant-cell-lines-molm-aza-1-and-molm-dec-5
#4
Eun-Hye Hur, Seung-Hyun Jung, Bon-Kwan Goo, Juhyun Moon, Yunsuk Choi, Dae Ro Choi, Yeun-Jun Chung, Je-Hwan Lee
Two hypomethylating agents (HMAs), azacitidine and decitabine, have demonstrated clinical activities in myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML); however, potential problems include development of acquired resistance. HMA-resistant patients have very poor prognosis and this cohort of patients constitutes an important area of research. To understand the mechanisms underlying HMA-resistance and to overcome it, we established an azacitidine-resistant cell line, MOLM/AZA-1 and a decitabine-resistant cell line, MOLM/DEC-5 using MOLM-13...
December 28, 2016: Oncotarget
https://www.readbyqxmd.com/read/28013106/cpx-351-exhibits-potent-and-direct-ex-vivo-cytotoxicity-against-aml-blasts-with-enhanced-efficacy-for-cells-harboring-the-flt3-itd-mutation
#5
Max J Gordon, Paul Tardi, Marc M Loriaux, Stephen E Spurgeon, Elie Traer, Tibor Kovacsovics, Lawrence D Mayer, Jeffrey W Tyner
PURPOSE: Identify AML patients most likely to respond to CPX-351, a nano-scale liposome formulation containing cytarabine and daunorubicin co-encapsulated at a 5:1 molar ratio. METHODS: We examined the ex vivo cytotoxic activity of CPX-351 against leukemic cells isolated from 53 AML patients and an additional 127 samples including acute lymphoblastic leukemia, myelodysplastic syndrome/myeloproliferative neoplasms, or chronic lymphocytic leukemia/lymphoma. We assessed activity with respect to common molecular lesions and used flow cytometry to assess CPX-351 cellular uptake...
December 12, 2016: Leukemia Research
https://www.readbyqxmd.com/read/27923552/preleukaemic-clonal-haemopoiesis-and-risk-of-therapy-related-myeloid-neoplasms-a-case-control-study
#6
Koichi Takahashi, Feng Wang, Hagop Kantarjian, Denaha Doss, Kanhav Khanna, Erika Thompson, Li Zhao, Keyur Patel, Sattva Neelapu, Curtis Gumbs, Carlos Bueso-Ramos, Courtney D DiNardo, Simona Colla, Farhad Ravandi, Jianhua Zhang, Xuelin Huang, Xifeng Wu, Felipe Samaniego, Guillermo Garcia-Manero, P Andrew Futreal
BACKGROUND: Therapy-related myeloid neoplasms are secondary malignancies that are often fatal, but their risk factors are not well understood. Evidence suggests that individuals with clonal haemopoiesis have increased risk of developing haematological malignancies. We aimed to identify whether patients with cancer who have clonal haemopoiesis are at an increased risk of developing therapy-related myeloid neoplasms. METHODS: We did this retrospective case-control study to compare the prevalence of clonal haemopoiesis between patients treated for cancer who later developed therapy-related myeloid neoplasms (cases) and patients who did not develop these neoplasms (controls)...
January 2017: Lancet Oncology
https://www.readbyqxmd.com/read/27914967/survival-advantage-and-comparable-toxicity-in-reduced-toxicity-treosulfan-based-versus-reduced-intensity-busulfan-based-conditioning-regimen-in-myelodysplastic-syndrome-and-acute-myeloid-leukemia-patients-after-allogeneic-hematopoietic-cell-transplantation
#7
Ioanna Sakellari, Despina Mallouri, Eleni Gavriilaki, Ioannis Batsis, Maria Kaliou, Varnavas Constantinou, Apostolia Papalexandri, Chrysavgi Lalayanni, Chrysanthi Vadikolia, Anastasia Athanasiadou, Evangelia Yannaki, Damianos Sotiropoulos, Christos Smias, Achilles Anagnostopoulos
Treosulfan has been incorporated in conditioning regimens for sustained remission without substantial toxicity and treatment-related mortality (TRM). We aimed to analyze the safety and efficacy of a fludarabine 150 mg/m(2) and treosulfan 42 g/m(2) (FluTreo) conditioning regimen in medically infirm patients. Outcomes were compared with those of a similar historical group treated with fludarabine 150 mg/m(2) to 180 mg/m(2), busulfan 6.4 mg/kg, and antithymocyte globulin (ATG) 5 mg/kg to 7.5 mg/kg (FluBuATG)...
November 30, 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27911138/phase-1-dose-escalation-study-of-oral-abexinostat-for-the-treatment-of-patients-with-relapsed-refractory-higher-risk-myelodysplastic-syndromes-acute-myeloid-leukemia-or-acute-lymphoblastic-leukemia
#8
Norbert Vey, Thomas Prebet, Claire Thalamas, Aude Charbonnier, Jerome Rey, Ioana Kloos, Emily Liu, Ying Luan, Remus Vezan, Thorsten Graef, Christian Recher
Histone deacetylase (HDAC) inhibitor abexinostat is under investigation for the treatment of various cancers. Epigenetic changes including aberrant HDAC activity are associated with cancers, including myelodysplastic syndromes (MDS), acute myeloid leukemia (AML), and acute lymphoblastic leukemia (ALL). In this phase 1 dose-escalation study, 17 patients with relapsed/refractory higher-risk MDS, AML, or ALL received oral abexinostat (60, 80 [starting dose], 100, or 120 mg) twice daily (bid) on Days 1-14 of 21-day cycles...
December 2, 2016: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/27862375/concomitant-mds-with-isolated-5q-deletion-and-mgus-case-report-and-review-of-molecular-aspects
#9
Florian Nolte, Maximilian Mossner, Johann-Christoph Jann, Daniel Nowak, Tobias Boch, Nadine Zoe Müller, Wolf-Karsten Hofmann, Georgia Metzgeroth
Patients with monoclonal gammopathy of undetermined significance (MGUS) have a higher risk for the development of concomitant primary cancers such as multiple myeloma (MM) and myelodysplastic syndrome (MDS). We report the case of patient initially suffering from MGUS of the IgG lambda subtype for more than 10 yr, which evolved to MM and MDS with deletion (5q) with severe pancytopenia. Due to pancytopenia, he received dose-reduced treatment with lenalidomide and dexamethasone. He achieved an ongoing transfusion independency after about 1 month of treatment...
November 15, 2016: European Journal of Haematology
https://www.readbyqxmd.com/read/27860411/secondary-primary-malignancies-during-the-lenalidomide-dexamethasone-regimen-in-relapsed-refractory-multiple-myeloma-patients
#10
Rouslan Kotchetkov, Esther Masih-Khan, Chia-Min Chu, Eshetu G Atenafu, Christine Chen, Vishal Kukreti, Suzanne Trudel, Rodger Tiedemann, Donna E Reece
Lenalidomide in combination with dexamethasone (Len-dex) represents a highly effective treatment in relapsed/refractory multiple myeloma (RRMM) patients. However, an increased risk of secondary primary malignancies (SPMs), including myelodysplastic syndrome (MDS) and acute myelogenous leukemia (AML) has been described in patients receiving lenalidomide. In order to assess the incidence and features of this complication, we reviewed 195 patients with RRMM treated with Len-dex at our institution. The median follow-up time from diagnosis of MM was 73 months (10-234 months) and from initiation of Len-dex was 19 months (1-104 months)...
November 18, 2016: Cancer Medicine
https://www.readbyqxmd.com/read/27853634/dynamic-alterations-of-bone-marrow-cytokine-landscape-of-myelodysplastic-syndromes-patients-treated-with-5-azacytidine
#11
Alena Moudra, Sona Hubackova, Veronika Machalova, Marketa Vancurova, Jiri Bartek, Milan Reinis, Zdenek Hodny, Anna Jonasova
Myelodysplastic syndromes (MDS) represent a heterogeneous group of clonal stem cell disorders characterized by ineffective hematopoiesis frequently progressing into acute myeloid leukemia (AML), with emerging evidence implicating aberrant bone marrow (BM) microenvironment and inflammation-related changes. 5-azacytidine (5-AC) represents standard MDS treatment. Besides inhibiting DNA/RNA methylation, 5-AC has been shown to induce DNA damage and apoptosis in vitro. To provide insights into in vivo effects, we assessed the proinflammatory cytokines alterations during MDS progression, cytokine changes after 5-AC, and contribution of inflammatory comorbidities to the cytokine changes in MDS patients...
2016: Oncoimmunology
https://www.readbyqxmd.com/read/27822099/the-danish-national-acute-leukemia-registry
#12
REVIEW
Lene Sofie Granfeldt Østgård, Jan Maxwell Nørgaard, Klas Kræsten Raaschou-Jensen, Robert Schou Pedersen, Dorthe Rønnov-Jessen, Per Troellund Pedersen, Inge Høgh Dufva, Claus Werenberg Marcher, Ove Juul Nielsen, Marianne Tang Severinsen, Lone Smidstrup Friis
AIM OF DATABASE: The main aim of the Danish National Acute Leukemia Registry (DNLR) was to obtain information about the epidemiology of the hematologic cancers acute myeloid leukemia (AML), acute lymphoblastic leukemia (ALL), and myelodysplastic syndrome (MDS). STUDY POPULATION: The registry was established in January 2000 by the Danish Acute Leukemia Group and has been expanded over the years. It includes adult AML patients diagnosed in Denmark since 2000, ALL patients diagnosed since 2005, and MDS patients diagnosed since 2010...
2016: Clinical Epidemiology
https://www.readbyqxmd.com/read/27790720/a-phase-2-trial-of-high-dose-lenalidomide-in-patients-with-relapsed-refractory-higher-risk-myelodysplastic-syndromes-and-acute-myeloid-leukaemia-with-trilineage-dysplasia
#13
Amer M Zeidan, B Douglas Smith, Hetty E Carraway, Ivana Gojo, Amy DeZern, Steven D Gore
Limited therapies exist for patients with refractory and relapsed (RR) higher-risk myelodysplastic syndromes (HR-MDS) and acute myeloid leukaemia with trilineage dysplasia (AML-TD). High dose (HD) lenalidomide (50 mg) has activity as frontline therapy in elderly AML but there is limited data in the RR setting. This phase II trial included patients with RR HR-MDS or AML-TD at 2 doses of lenalidomide (15 or 50 mg) on days 1-28 of 42-day cycles. The primary endpoint was response rate using the 2006 International Working Group criteria...
October 28, 2016: British Journal of Haematology
https://www.readbyqxmd.com/read/27784396/-effect-of-rbc-transfusion-on-t-lymphocyte-subsets-of-patients-with-hematologic-malignancies
#14
Fang Ye, Li-Ping Zhang
OBJECTIVE: To explore the effect of red blood cell(RBC) transfusion on T lymphocyte subsets in the patients with hematologic malignancies. METHODS: The patients admitted in department of hematology of the second hospital of Shanxi Medical University from September 2013 to September 2014 acconuted for 144 cases had been diagnosed with hematologic malignancies and needed RBC transfusions according to clinical transfusion creteria (Hb level<70 g/L). All the patients were in rest period after chemotherapy, furthermore they did not administrate immunomodulatory drugs...
October 2016: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/27750403/immunophenotypic-cytogenetic-and-mutational-characterization-of-cell-lines-derived-from-myelodysplastic-syndrome-patients-after-progression-to-acute-myeloid-leukemia
#15
Anna Palau, Mar Mallo, Laura Palomo, Ines Rodríguez-Hernández, Jeannine Diesch, Diana Campos, Isabel Granada, Jordi Juncà, Hans G Drexler, Francesc Solé, Marcus Buschbeck
Leukemia cell lines have been widely used in the hematology field to unravel mechanistic insights and to test new therapeutic strategies. Myelodysplastic syndromes (MDS) comprise a heterogeneous group of diseases that are characterized by ineffective hematopoiesis and frequent progress to acute myeloid leukemia (AML). A few cell lines have been established from MDS patients after progression to AML but their characterization is incomplete. Here we provide a detailed description of the immunophenotypic profile of the MDS-derived cell lines SKK-1, SKM-1, F-36P; and MOLM-13...
October 17, 2016: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/27706258/hag-homoharringtonine-cytarabine-g-csf-regimen-for-the-treatment-of-acute-myeloid-leukemia-and-myelodysplastic-syndrome-a-meta-analysis-with-2-314-participants
#16
Mixue Xie, Qi Jiang, Li Li, Jingjing Zhu, Lixia Zhu, De Zhou, Yanlong Zheng, Xiudi Yang, Mingyu Zhu, Jianai Sun, Wanzhuo Xie, Xiujin Ye
BACKGROUND: In China, the combination of homoharringtonine, cytarabine, and G-CSF (HAG) has been extensively applied for treatment of acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS). METHODS: We performed a meta-analysis of 2,314 patients (AML, n = 1754; MDS, n = 560) to determine the overall safety and efficacy of this regimen. RESULTS: The complete response (CR) rate of AML patients (53%) was significantly higher than that of MDS/transformed-AML patients (45%; P = 0...
2016: PloS One
https://www.readbyqxmd.com/read/27705929/a-5-day-cytoreductive-chemotherapy-followed-by-haplo-identical-hsct-fa5-bucy-as-a-tumor-ablative-regimen-improved-the-survival-of-patients-with-advanced-hematological-malignancies
#17
Ting Yang, Qiaoxian Lin, Jinhua Ren, Ping Chen, Xiaohong Yuan, Xiaofeng Luo, Tingbo Liu, Jing Zheng, Zhihong Zheng, Xiaoyun Zheng, Xinji Chen, Langhui Zhang, Hao Zheng, Zaisheng Chen, Xueling Hua, Shaohua Le, Jian Li, Zhizhe Chen, Jianda Hu
Haplo-HSCT has been used when HLA-matched siblings are not available. Conditioning regimens aim to reduce tumor burden prior to HSCT and provide sufficient immunoablation. We report the outcome of haplo-HSCT in 63 consecutive patients from 2/2013 to 12/2015 (19 females/44 males) with high-risk or relapsed/refractory hematological malignancies (n=29-AML; 8-sAML; 19-ALL; 5-advanced-MDS; 2-CML-BC). Median age was 20 years (range: 1.1-49). Twenty-one patients achieved remission prior to transplant, while 42 did not...
October 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27699872/are-myelodysplastic-syndromes-underdiagnosed-in-poland-a-report-by-the-polish-adult-leukaemia-group
#18
Joanna E Drozd-Sokołowska, Krzysztof Mądry, Anna Waszczuk-Gajda, Tomasz Żółtak, Anna Sikorska, Andrzej Mital, Jarosław Wajs, Grażyna Semeńczuk, Anna Szmigielska-Kapłon, Magdalena Szczepańska, Ewa Wasilewska, Paweł Szwedyk, Jadwiga Hołojda, Marzena Wątek, Beata Stella-Hołowiecka, Maria Soroka-Wojtaszko, Wojciech Homenda, Mirosław Polak, Renata Guzicka-Kazimierska, Agnieszka Porowska, Wiesław Wiktor-Jędrzejczak, Jadwiga Dwilewicz-Trojaczek
OBJECTIVES: The epidemiology of myelodysplastic syndromes (MDS) differs among countries. Here, we present the first epidemiological indices determined for Poland. METHODS: Twenty-one haematological centres participated in the study. Patients diagnosed with MDS and acute myeloid leukaemia (AML) with 20-29% blasts were enrolled. Data collection was conducted for strictly predefined period. RESULTS: The overall crude incidence rate for all MDS subtypes was 1...
October 4, 2016: European Journal of Haematology
https://www.readbyqxmd.com/read/27683035/perturbed-hematopoietic-stem-and-progenitor-cell-hierarchy-in-myelodysplastic-syndromes-patients-with-monosomy-7-as-the-sole-cytogenetic-abnormality
#19
Marios Dimitriou, Petter S Woll, Teresa Mortera-Blanco, Mohsen Karimi, David C Wedge, Helen Doolittle, Iyadh Douagi, Elli Papaemmanuil, Sten Eirik W Jacobsen, Eva Hellström-Lindberg
The stem and progenitor cell compartments in low- and intermediate-risk myelodysplastic syndromes (MDS) have recently been described, and shown to be highly conserved when compared to those in acute myeloid leukemia (AML). Much less is known about the characteristics of the hematopoietic hierarchy of subgroups of MDS with a high risk of transforming to AML. Immunophenotypic analysis of immature stem and progenitor cell compartments from patients with an isolated loss of the entire chromosome 7 (isolated -7), an independent high-risk genetic event in MDS, showed expansion and dominance of the malignant -7 clone in the granulocyte and macrophage progenitors (GMP), and other CD45RA+ progenitor compartments, and a significant reduction of the LIN-CD34+CD38low/-CD90+CD45RA- hematopoietic stem cell (HSC) compartment, highly reminiscent of what is typically seen in AML, and distinct from low-risk MDS...
September 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/27680515/the-impact-of-tp53-mutations-and-tp53-deletions-on-survival-varies-between-aml-all-mds-and-cll-an-analysis-of-3307-cases
#20
A Stengel, W Kern, T Haferlach, M Meggendorfer, A Fasan, C Haferlach
Alterations in TP53 have been described in many cancer types including hematological neoplasms. We aimed at comparing TP53 mutations (mut) and deletions (del) in a large cohort of patients with hematological malignancies (n=3307), including AML (n=858), MDS (n=943), ALL (n=358), CLL (n=1148). Overall, alterations in TP53 were detected in 332/3307 cases (10%). The highest frequency was observed in ALL (total: 19%; mut+del: 6%; mut only: 8%; del only: 5%) and AML (total: 13%; mut+del: 5%; mut only: 7%; del only: 1%), whereas TP53 alterations occurred less frequently in CLL (total: 8%) and MDS (total: 7%)...
October 14, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
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