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leukemia myelomonocytic

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https://www.readbyqxmd.com/read/28296991/clinicopathologic-immunohistochemical-and-molecular-features-of-histiocytoid-sweet-syndrome
#1
Victoria Alegría-Landa, Socorro María Rodríguez-Pinilla, Angel Santos-Briz, José Luis Rodríguez-Peralto, Victor Alegre, Lorenzo Cerroni, Heinz Kutzner, Luis Requena
Importance: Histiocytoid Sweet syndrome is a rare histopathologic variant of Sweet syndrome. The nature of the histiocytoid infiltrate has generated considerable controversy in the literature. Objective: The main goal of this study was to conduct a comprehensive overview of the immunohistochemical phenotype of the infiltrate in histiocytoid Sweet syndrome. We also analyze whether this variant of Sweet syndrome is more frequently associated with hematologic malignancies than classic Sweet syndrome...
March 15, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28292946/nox2-dependent-immunosuppression-in-chronic-myelomonocytic-leukemia
#2
Johan Aurelius, Alexander Hallner, Olle Werlenius, Rebecca Riise, Lars Möllgård, Mats Brune, Markus Hansson, Anna Martner, Fredrik B Thorén, Kristoffer Hellstrand
Chronic myelomonocytic leukemia (CMML) is a myeloproliferative and myelodysplastic neoplasm with few treatment options and dismal prognosis. The role of natural killer (NK) cells and other antileukemic lymphocytes in CMML is largely unknown. We aimed to provide insight into the mechanisms of immune evasion in CMML with a focus on immunosuppressive reactive oxygen species (ROS) formed by the myeloid cell NADPH oxidase-2 (NOX2). The dominant population of primary human CMML cells was found to express membrane-bound NOX2 and to release ROS, which, in turn, triggered extensive PARP-1-dependent cell death in cocultured NK cells, CD8(+) T effector memory cells, and CD8(+) T effector cells...
March 14, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28286197/a-lot-to-learn-about-allogeneic-hematopoietic-cell-transplantation-for-chronic-myelomonocytic-leukemia
#3
Guillermo F Sanz
No abstract text is available yet for this article.
March 9, 2017: Biology of Blood and Marrow Transplantation
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/28274536/chronic-myelomonocytic-leukemia-blast-crisis-in-a-patient-with-advanced-non-small-cell-lung-cancer-treated-with-egfr-tyrosine-kinase-inhibitors
#5
Hiroaki Ogata, Isamu Okamoto, Goichi Yoshimoto, Teppei Obara, Kayo Ijichi, Eiji Iwama, Taishi Harada, Koichi Akashi, Yoichi Nakanishi
A 59-year-old woman with epidermal growth factor receptor gene (EGFR) mutation-positive advanced lung adenocarcinoma was treated with afatinib after a diagnosis of chronic myelomonocytic leukemia (CMML). Twenty-one weeks later, she developed agranulocytosis, and CMML subsequently progressed to blast crisis. After complete remission of CMML, gefitinib was initiated; however, agranulocytosis recurred. This is the first reported case of both EGFR mutation-positive advanced non-small cell lung cancer with CMML, and of CMML blast crisis...
March 2017: Respiratory Investigation
https://www.readbyqxmd.com/read/28253492/identification-of-a-cryptic-insertion-ins-11-x-q23-q28q12-resulting-in-a-kmt2a-flna-fusion-in-a-13-month-old-child-with-acute-myelomonocytic-leukemia
#6
Jana Lentes, Kathrin Thomay, Dominik T Schneider, Benedikt Bernbeck, Dirk Reinhardt, Rolf Marschalek, Claus Meyer, Brigitte Schlegelberger, Gudrun Göhring
In pediatric acute myeloid leukemia (AML), chromosomal abnormalities leading to a disruption of the lysine methyltransferase 2A (KMT2A) gene in 11q23 are the most frequent rearrangements. Here, we report on the identification of a novel cryptic insertion, ins(11;X)(q23;q28q12), resulting in a translocation of the KMT2A gene in 11q23, leading to a KMT2A-FLNA fusion in a 13-month-old boy with de novo acute myelomonocytic leukemia, who died 38 days after diagnosis. The patient presented a complex karyotype 48∼49,Y,del(X)(q12),+del(X)(q12),+8,ins(11;X)(q23; q28q12),+19...
March 3, 2017: Cytogenetic and Genome Research
https://www.readbyqxmd.com/read/28244637/blastic-transformation-of-juvenile-myelomonocytic-leukemia-caused-by-the-copy-number-gain-of-oncogenic-kras
#7
Tomoo Osumi, Motohiro Kato, Meri Ouchi-Uchiyama, Daisuke Tomizawa, Keisuke Kataoka, Yoichi Fujii, Masafumi Seki, Junko Takita, Seishi Ogawa, Toru Uchiyama, Kentaro Ohki, Nobutaka Kiyokawa
Previous studies have reported several cases of juvenile myelomonocytic leukemia (JMML) developing blastic transformation during an indolent clinical course, but the underlying mechanism of transformation is still not well understood. In this report, we describe a case of JMML with blastic transformation possibly caused by additional copy number gains of the KRAS mutant allele. We have discovered that the copy number gain of the mutant allele is an additional possible cause of blastic transformation in JMML...
February 28, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28209919/clinical-significance-of-csf3r-srsf2-and-setbp1-mutations-in-chronic-neutrophilic-leukemia-and-chronic-myelomonocytic-leukemia
#8
Yuan Ouyang, Chun Qiao, Yu Chen, Su-Jiang Zhang
Chronic neutrophilic leukemia (CNL) and chronic myelomonocytic leukemia (CMML) are rare hematologic neoplasms. We performed CSF3R, SRSF2 and SETBP1 mutational analyses in 10 CNL and 56 CMML patients. In this sample cohort, 80% of CNL patients harbored CSF3R mutations, of which the CSF3R T618I mutation was dominant. Mutations in CSF3R and SETBP1 were found in 7.1% and 5.3% CMML patients respectively, while 25% of CMML patients carried SRSF2 mutations. Strikingly, we identified that all of the CSF3R mutations detected in CMML patients were represented by a P733T mutation...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28209720/acquired-expression-of-cbl-q367p-in-mice-induces-dysplastic-myelopoiesis-mimicking-chronic-myelomonocytic-leukemia
#9
Yuichiro Nakata, Takeshi Ueda, Akiko Nagamachi, Norimasa Yamasaki, Ken-Ichiro Ikeda, Yasuyuki Sera, Keiyo Takubo, Akinori Kanai, Hideaki Oda, Masashi Sanada, Seishi Ogawa, Kohichiro Tsuji, Yasuhiro Ebihara, Linda Wolff, Zen-Ichiro Honda, Toshio Suda, Toshiya Inaba, Hiroaki Honda
Chronic myelomonocytic leukemia (CMML) is a hematological malignancy characterized by uncontrolled proliferation of dysplastic myelomonocytes and frequent progression to acute myeloid leukemia (AML). We identified mutations in the Cbl gene, which encodes a negative regulator of cytokine signaling, in a subset of CMML patients. To investigate the contribution of mutant Cbl in CMML pathogenesis, we generated conditional knock-in mice for Cbl that express wild-type Cbl in a steady state and inducibly express Cbl(Q367P) , a CMML-associated Cbl mutant...
February 16, 2017: Blood
https://www.readbyqxmd.com/read/28205462/atypical-chronic-myeloid-leukemia-in-a-german-shepherd-dog
#10
Christina L Marino, Jimmy N S N Tran, Tracy Stokol
A 4-y-old neutered male German Shepherd Dog was presented with a 3-d duration of lethargy, restlessness, and vomiting. Physical examination revealed generalized lymphadenopathy, pale mucous membranes, systolic heart murmur, dehydration, and fever. Hematologic abnormalities included moderate-to-marked leukocytosis, characterized by neutrophilia with a left shift to progranulocytes and 2% presumptive myeloid blasts, marked anemia that was nonregenerative, and marked thrombocytopenia. Dysplasia was evident in neutrophils and platelets...
February 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28179279/role-of-runx1-in-hematological-malignancies
#11
Raman Sood, Yasuhiko Kamikubo, Paul Liu
RUNX1 is a member of the core binding factor family of transcription factors and is indispensable for the establishment of definitive hematopoiesis in vertebrates. RUNX1 is one of the most frequently mutated genes in a variety of hematological malignancies. Germline mutations in RUNX1 cause familial platelet disorder with associated myeloid malignancies (FPDMM). Somatic mutations and chromosomal rearrangements involving RUNX1 are frequently observed in myelodysplastic syndrome (MDS) and leukemias of myeloid and lymphoid lineages, i...
February 8, 2017: Blood
https://www.readbyqxmd.com/read/28179213/juvenile-myelomonocytic-leukemia-in-turkey-a-retrospective-analysis-of-65-patients
#12
Özlem Tüfekçi, Ülker Koçak, Zühre Kaya, İdil Yenicesu, Canan Albayrak, Davut Albayrak, Şebnem Yılmaz Bengoa, Türkan Patıroğlu, Musa Karakükçü, Ekrem Ünal, Elif Ünal İnce, Talia İleri, Mehmet Ertem, Tiraje Celkan, Gül Nihal Özdemir, Nazan Sarper, Dilek Kaçar, Neşe Yaralı, Namık Yaşar Özbek, Alphan Küpesiz, Tuba Karapınar, Canan Vergin, Ümran Çalışkan, Hüseyin Tokgöz, Melike Sezgin Evim, Birol Baytan, Adalet Meral Güneş, Deniz Yılmaz Karapınar, Serap Karaman, Vedat Uygun, Gülsun Karasu, Mehmet Akif Yeşilipek, Ahmet Koç, Erol Erduran, Berna Atabay, Haldun Öniz, Hale Ören
OBJECTIVE: To define the status of juvenile myelomonocytic leukemia (JMML) patients in Turkey, in terms of time of diagnosis, clinical characteristics, mutational studies, clinical course and treatment strategies. MATERIALS AND METHODS: Data including clinical and labarotory characteristics and treatment strategies of JMML patients were collected retrospectively from pediatric hematology-oncology centers in Turkey. RESULTS: Sixty-five children with JMML diagnosed between 2002 and 2016 in 18 institutions throughout Turkey were enrolled into the study...
February 9, 2017: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/28158286/prognostic-significance-of-setbp1-mutations-in-myelodysplastic-syndromes-chronic-myelomonocytic-leukemia-and-chronic-neutrophilic-leukemia-a-meta-analysis
#13
Li-Hong Shou, Dan Cao, Xiao-Hui Dong, Qiu Fang, Ying Wu, Yan Zhang, Ju-Ping Fei, Bao-Lian Xu
OBJECTIVES: This meta-analysis investigates the prognostic effect of SET binding protein 1 (SETBP1) mutations in patients with myelodysplastic syndromes (MDS), chronic myelomonocytic leukemia (CMML), or chronic neutrophilic leukemia (CNL). METHODS: Eligible studies from Pubmed, Embase, and Web of Science were searched from database inception through April 2016. Hazard ratios (HRs) and 95% confidence interval (CI) of overall survival (OS) were pooled to calculate the prognostic significance of SETBP1 mutation in patients...
2017: PloS One
https://www.readbyqxmd.com/read/28156035/few-layer-graphene-kills-selectively-tumor-cells-from-myelomonocytic-leukemia-patients
#14
Julie Russier, Verónica León, Marco Orecchioni, Eri Hirata, Patrizia Virdis, Claudio Fozza, Francesco Sgarrella, Gianaurelio Cuniberti, Maurizio Prato, Ester Vázquez, Alberto Bianco, Lucia G Delogu
In the cure of cancer, a major cause of today's mortality, chemotherapy is the most common treatment, though serious frequent challenges are encountered by current anticancer drugs. We discovered that few-layer graphene (FLG) dispersions have a specific killer action on monocytes, showing neither toxic nor activation effects on other immune cells. We confirmed the therapeutic application of graphene on an aggressive type of cancer that is myelomonocytic leukemia, where the monocytes are in their malignant form...
February 3, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28137827/s100a9-induces-differentiation-of-acute-myeloid-leukemia-cells-through-tlr4
#15
Malika Laouedj, Mélanie R Tardif, Laurine Gil, Marie-Astrid Raquil, Asmaa Lachaab, Martin Pelletier, Philippe A Tessier, Frédéric Barabé
S100A8 and S100A9 are calcium-binding proteins predominantly expressed by neutrophils and monocytes, and play key roles in both normal and pathological inflammation. Recently, both proteins were found to promote tumor progression through the establishment of pre-metastatic niches and to inhibit antitumor immune responses. Although S100A8 and S100A9 have been studied in solid cancers, their functions in hematological malignancies remain poorly understood. However, S100A8 and S100A9 are highly expressed in acute myeloid leukemia (AML), and S100A8 expression has been linked to a poor prognosis in AML...
January 30, 2017: Blood
https://www.readbyqxmd.com/read/28119224/clinical-significance-of-isolated-del-7p-in-myeloid-neoplasms
#16
Hatice Deniz Gur, Sa A Wang, Zhenya Tang, Shimin Hu, Shaoying Li, L Jeffrey Medeiros, Guilin Tang
Sole del(7p) is a rare finding in myeloid neoplasms and its clinical significance is largely unknown. Here we report 10 patients with isolated del(7p), 4 had acute myeloid leukemia (AML), 2 myelodysplastic syndromes (MDS), 1 chronic myelomonocytic leukemia (CMML), 1 primary myelofibrosis (PMF), and 2 AML in remission. Seven patients had large and 3 had small del(7p) clone. For patients with AML, 3 acquired del(7p) either at disease relapse or disease progression, then became refractory to therapy and died shortly thereafter (median 5 months)...
January 16, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28115276/allogeneic-hematopoietic-cell-transplantation-for-adult-chronic-myelomonocytic-leukemia
#17
Hien Duong Liu, Kwang Woo Ahn, Zhen-Huan Hu, Mehdi Hamadani, Taiga Nishihori, Baldeep Wirk, Amer Beitinjaneh, David Rizzieri, Michael R Grunwald, Mitchell Sabloff, Richard F Olsson, Ashish Bajel, Christopher Bredeson, Andrew Daly, Yoshihiro Inamoto, Navneet Majhail, Ayman Saad, Vikas Gupta, Aaron Gerds, Adriana Malone, Martin Tallman, Ran Reshef, David I Marks, Edward Copelan, Usama Gergis, Mary Lynn Savoie, Celalettin Ustun, Mark R Litzow, Jean-Yves Cahn, Tamila Kindwall-Keller, Gorgun Akpek, Bipin N Savani, Mahmoud Aljurf, Jacob M Rowe, Peter H Wiernik, Jack W Hsu, Jorge Cortes, Matt Kalaycio, Richard Maziarz, Ronald Sobecks, Uday Popat, Edwin Alyea, Wael Saber
Allogeneic hematopoietic cell transplantation (HCT) is potentially curative for patients with chronic myelomonocytic leukemia (CMML); however, few data exist regarding prognostic factors and transplantation outcomes. We performed this retrospective study to identify prognostic factors for post-transplantation outcomes. The CMML-specific prognostic scoring system (CPSS) has been validated in subjects receiving nontransplantation therapy and was included in our study. From 2001 to 2012, 209 adult subjects who received HCT for CMML were reported to the Center for International Blood and Marrow Transplant Research...
January 20, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28111791/association-between-juvenile-myelomonocytic-leukemia-juvenile-xanthogranulomas-and-neurofibromatosis-type-1-case-report-and-review-of-the-literature
#18
REVIEW
Samuel Paulus, Sandra Koronowska, Regina Fölster-Holst
The occurrence of juvenile myelomonocytic leukemia (JMML), juvenile xanthogranuloma (JXG), and neurofibromatosis type 1 (NF1) together is relatively rare. Approximately only 20 cases have been reported in the literature. It is debated whether children with NF1 and JXG are at higher risk of developing JMML than children with NF1 alone. We present the case of a boy primarily diagnosed with NF1 with coexisting JXG who developed JMML at the age of 22 months. The clinical course from initial presentation to final diagnosis is detailed and the genetic features and hematologic characteristics are discussed...
March 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28111467/blastic-plasmacytoid-dendritic-cell-neoplasm-and-chronic-myelomonocytic-leukemia-a-shared-clonal-origin
#19
L Brunetti, V Di Battista, A Venanzi, G Schiavoni, M P Martelli, S Ascani, C Mecucci, E Tiacci, B Falini
Leukemia accepted article preview online, 23 January 2017. doi:10.1038/leu.2017.38.
January 23, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28102729/chronic-myelomonocytic-leukemia-with-double-mutations-in-dnmt3a-and-flt3-itd-treated-with-decitabine-and-sorafenib
#20
Jia Gu, Zhiqiong Wang, Min Xiao, Xia Mao, Li Zhu, Ying Wang, Wei Huang
Chronic myelomonocytic leukemia (CMML) is a heterogeneous neoplastic hematologic disorder with worse overall survival. Half of CMML have mutations, but case with concomitant mutations of DNA methyltransferase 3A (DNMT3A) and Internal tandem duplications of the juxtamembrane domain of FLT3 (FLT3-ITD) in CMML was not reported before. We reported a 51-year-old man who had CMML with concomitant mutations in DNMT3A and FLT3-ITD.The patient received decitabine and sorafenib combined treatment. In this report, we reviewed DNMT3A mutation and FLT3 mutation, and we reviewed treatment of decitabine and sorafenib...
January 19, 2017: Cancer Biology & Therapy
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