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Pediatric leukemias

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https://www.readbyqxmd.com/read/28530458/-early-symptoms-of-childhood-malignant-diseases
#1
Zsuzsanna Erzsébet Papp, Izabella Kelemen, Adrienne Horváth
INTRODUCTION: Childhood malignant diseases are rare in pediatric pathology. Early symptoms are not specific, fatigue, pallor, compression signs and bone marrow failure are often mentioned. AIM: To summarize the most frequent early symptoms of childhood malignancies in order to help the physicians in the early recognition. METHOD: In our retrospective study, we processed a period of 5 years between 2012-2016, with an accent on the onset manifestations of malignancies...
May 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28525903/polymorphisms-in-methotrexate-transporters-and-their-relationship-to-plasma-methotrexate-levels-toxicity-of-high-dose-methotrexate-and-outcome-of-pediatric-acute-lymphoblastic-leukemia
#2
Shu-Guang Liu, Chao Gao, Rui-Dong Zhang, Xiao-Xi Zhao, Lei Cui, Wei-Jing Li, Zhen-Ping Chen, Zhi-Xia Yue, Yuan-Yuan Zhang, Min-Yuan Wu, Jian-Xiang Wang, Zhi-Gang Li, Hu-Yong Zheng
High-dose methotrexate (HDMTX) plays an important role in the treatment of acute lymphoblastic leukemia (ALL) although there is great inter-patient variability in the efficacy and toxicity of MTX. The relationship between polymorphisms in genes encoding MTX transporters and MTX response is controversial. In the present study, 322 Chinese children with standard- and intermediate-risk ALL were genotyped for 12 polymorphisms. SLCO1B1 rs10841753 showed a significant association with plasma MTX levels at 48 h (P = 0...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28521633/cd30-expression-in-pediatric-neoplasms-study-of-585-cases
#3
Jinjun Cheng, Haiqing Zhu, John Kim Choi
CD30 is a member of the tumor necrosis factor receptor superfamily, member 8 (TNFRSF8), and its normal expression is restricted to activated T and B cells. In tumor cells, CD30 expression is most commonly associated with lymphoid malignancies (Hodgkin and non-Hodgkin lymphomas) and is a therapeutic target using anti-CD30 antibody. CD30 expression has been reported also in mostly adult non-lymphoid malignancies, raising the possibility of CD30-targeted therapy for additional tumors. In this study, we examined the incidence of CD30 expression in 251 hematopoietic and 334 non-hematopoietic cases of pediatric tumors...
June 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28521628/cd36-positive-b-lymphoblasts-predict-poor-outcome-in-children-with-b-lymphoblastic-leukemia
#4
Joanna G Newton, John T Horan, Scott Newman, Michael R Rossi, Rhett P Ketterling, Sunita I Park
Objective We observed that pediatric patients with B lymphoblastic leukemia which expressed CD36 at diagnosis seemed to have worse outcome than patients whose blasts did not. Here, we describe the patient, disease characteristics, pathological, molecular, and genetic features and outcomes of patients with CD36+ B-LL compared to patients with CD36- B-LL. Methods We retrospectively reviewed all flow cytometry reports from September 2008 to December 2015 to identify patients diagnosed at our institution with CD36 expression on B lymphoblasts...
June 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28521072/early-presentation-of-osteonecrosis-in-acute-lymphoblastic-leukemia-two-children-from-the-nordic-and-baltic-cohort
#5
Signe Sloth Mogensen, Arja Harila-Saari, Thomas Leth Frandsen, Päivi Lähteenmäki, Anders Castor, Ia Kohonen, Kjeld Schmiegelow, Outi Mäkitie
Osteonecrosis (ON) is usually considered treatment related in patients with acute lymphoblastic leukemia (ALL). We report two patients with presentation of ON at the time of ALL diagnosis. Both were females and diagnosed with ALL at age 8 and 14 years. In the latter, some symptoms and radiologically verified ON in both knees were still present after the end of ALL therapy. No pediatric patients have previously been reported with ON presenting before initiation of ALL therapy.
May 18, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28512555/assessment-of-obesity-and-hepatic-late-adverse-effects-in-the-egyptian-survivors-of-pediatric-acute-lymphoblastic-leukemia-a-single-center-study
#6
Farida H El-Rashedy, Mahmoud A El-Hawy, Sally M El Hefnawy, Mona M Mohammed
BACKGROUND: Childhood acute lymphoblastic leukemia (ALL) with current cure rates reaching 80% emphasizes the necessity to determine treatment-related long-term effects. The aim of this study is to estimate the prevalence of overweight, obesity, and hepatic late adverse effects in a cohort of ALL survivors treated at the Hematology and Oncology Unit, Pediatrics Department, Menoufia University, Egypt. METHODS: In this case-control study, height, weight, and body mass index (BMI) were assessed for 35 pediatric ALL survivors and 35 healthy children...
2017: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/28510690/trichosporonosis-in-pediatric-patients-with-a-hematologic-disorder
#7
Catherine E Foster, Morven S Edwards, Julienne Brackett, Deborah A Schady, C Mary Healy, Carol J Baker
Background.: Trichosporonosis is an emerging and often fatal opportunistic fungal infection in immunocompromised patients, particularly those with hematologic malignancy, but data in children are lacking. Methods.: We report here 3 cases of invasive infection caused by Trichosporon asahii in pediatric patients with acute lymphoblastic leukemia at Texas Children's Hospital in Houston, Texas. We also conducted a literature review and identified 16 additional reports of pediatric patients with invasive T asahii infection and an underlying malignant or nonmalignant hematologic disorder...
May 16, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28509405/opportunities-for-expanding-clinical-trial-enrollment-for-relapsed-and-refractory-pediatric-acute-myeloid-leukemia-in-the-united-states-and-canada
#8
Thomas B Alexander, Nickhill Bhakta, E Anders Kolb, Jeffrey E Rubnitz
No abstract text is available yet for this article.
May 16, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28508352/pediatric-precursor-b-acute-lymphoblastic-leukemia-are-t-helper-cells-the-missing-link-in-the-infectious-etiology-theory
#9
REVIEW
Simone Bürgler, David Nadal
Precursor B acute lymphoblastic leukemia (BCP-ALL), the most common childhood malignancy, arises from an expansion of malignant B cell precursors in the bone marrow. Epidemiological studies suggest that infections or immune responses to infections may promote such an expansion and thus BCP-ALL development. Nevertheless, a specific pathogen responsible for this process has not been identified. BCP-ALL cells critically depend on interactions with the bone marrow microenvironment. The bone marrow is also home to memory T helper (Th) cells that have previously expanded during an immune response in the periphery...
December 2017: Molecular and Cellular Pediatrics
https://www.readbyqxmd.com/read/28507466/high-level-of-mir-196b-at-newly-diagnosed-pediatric-acute-myeloid-leukemia-predicts-a-poor-outcome
#10
Lihua Xu, Yang Guo, Wenying Yan, Jiannong Cen, Yuna Niu, Qing Yan, Hailong He, Chien-Shing Chen, Shaoyan Hu
Differential expression of microRNAs (miRNAs) has been implicated in leukemogenesis. We investigate the expression pattern of miR-196b. Using quantitative real-time PCR (qRT-PCR), we detected the expression of miR-196b and its correlated genes (SMC1A/MLH1) in initial pediatric AML. A significant association was observed between overexpression of miR-196b and inferior overall survival of pediatric AML (Log Rank P<0.0001). AML M4/5 subtype, high white blood cell (WBC) count at presentation, MLL rearrangement, or FLT3-ITD mutation at diagnosis and non-remission group after the first induction chemotherapy possessed higher miR-196b expression...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28505595/epigenetic-drug-combination-induces-remission-in-mouse-xenograft-models-of-pediatric-acute-myeloid-leukemia
#11
Anilkumar Gopalakrishnapillai, E Anders Kolb, Suzanne M McCahan, Sonali P Barwe
Aberrations in epigenetic modifications contribute to leukemogenesis in childhood acute myeloid leukemia (AML). We combined DNA hypomethylating agent azacitidine with histone deacetylase inhibitor panobinostat in preclinical models of childhood AML. Synergistic cytotoxic effect upon treatment with azacitidine and panobinostat with combination indices <1.0 was observed. Azacitidine and panobinostat increased median survival by 26 and 6days respectively in MV4;11 xenografted mice. Mice treated with both drugs showed a drastic reduction in leukemic burden leading to complete remission sustained for the duration of the experimental period lasting more than 519days...
May 5, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28503810/a-minor-role-of-asparaginase-in-predisposing-to-cerebral-venous-thromboses-in-adult-acute-lymphoblastic-leukemia-patients
#12
Saara Roininen, Outi Laine, Marjut Kauppila, Marko Vesanen, Maria Rämet, Marjatta Sinisalo, Esa Jantunen, Marjaana Säily, Riikka Räty, Erkki Elonen, Ulla Wartiovaara-Kautto
Cerebral venous thrombosis (CVT) covers up to a third of all venous thromboses (VTs) detected in patients with acute lymphoblastic leukemia (ALL). It usually hampers patients' lives and may also endanger efficient leukemia treatment. Although many factors have been suggested to account for an elevated risk of VTs in patients with ALL, there still is a lack of studies focusing on CVTs and especially in the setting of adult ALL patients. We studied in our retrospective population-based cohort the occurrence, characteristics, as well as risk factors for VTs in 186 consecutively diagnosed Finnish adult ALL patients treated with a national pediatric-inspired treatment protocol ALL2000...
May 15, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28501543/allogeneic-hematopoietic-stem-cell-transplantation-for-adolescents-and-young-adults-with-acute-myeloid-leukemia
#13
Daisuke Tomizawa, Shiro Tanaka, Tadakazu Kondo, Yoshiko Hashii, Yasuyuki Arai, Kazuko Kudo, Takashi Taga, Takahiro Fukuda, Hiroaki Goto, Jiro Inagaki, Katsuyoshi Koh, Kazuteru Ohashi, Yukiyasu Ozawa, Masami Inoue, Koji Kato, Junji Tanaka, Yoshiko Atsuta, Souichi Adachi, Hiroyuki Ishida
Few reports have focused on adolescent and young adult (AYAs) patients with acute myeloid leukemia (AML) treated with hematopoietic stem cell transplantation (HSCT). We performed a retrospective analysis based on data obtained from a Japanese nationwide registration database to compare HSCT outcomes in AYA patients with AML with those in children with AML. An analysis of the 2,973 patients with de novo AML who received allogeneic HSCT from 1990 to 2013 showed inferior 5-year overall survival (OS) (54% vs. 58%, P<0...
May 10, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28498454/identification-of-setd2-nf1-fusion-gene-in-a-pediatric-spindle-cell-tumor-with-the-chromosomal-translocation-t-3-17-p21-q12
#14
Ioannis Panagopoulos, Ludmila Gorunova, Ingvild Lobmaier, Bodil Bjerkehagen, Sverre Heim
Spindle cell tumors are clinically heterogeneous but morphologically similar neoplasms. The term refers to the tumor cells' long and slender microscopic appearance. Distinct subgroups of spindle cell tumors are characterized by chromosomal translocations and also fusion genes. Other spindle cell tumors exist that have not yet been found to have characteristic, let alone pathognomonic, genetic or pathogenetic features. Continuous examination of spindle cell tumors is likely to reveal other subgroups that may, in the future, be seen to correspond to meaningful clinical differences and may even be therapeutically decisive...
May 4, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28497898/additional-cytogenetic-abnormalities-and-variant-t-9-22-at-the-diagnosis-of-childhood-chronic-myeloid-leukemia-the-experience-of-the-international-registry-for-chronic-myeloid-leukemia-in-children-and-adolescents
#15
Frédéric Millot, Christelle Dupraz, Joelle Guilhot, Meinolf Suttorp, Françoise Brizard, Thierry Leblanc, Adalet Meral Güneş, Petr Sedlacek, Evelyne De Bont, Chi Kong Li, Krzysztof Kalwak, Birgitte Lausen, Srdjana Culic, Michael Dworzak, Emilia Kaiserova, Barbara De Moerloose, Farah Roula, Andrea Biondi, André Baruchel, François Guilhot
BACKGROUND: In the adult population with newly diagnosed chronic myeloid leukemia (CML), variant translocations are usually not considered to be impairing the prognosis, whereas some additional cytogenetic abnormalities (ACAs) are associated with a negative impact on survival. Because of the rarity of CML in the pediatric population, such abnormalities have not been investigated in a large group of children with CML. METHODS: The prognostic relevance of variant t(9;22) and ACAs at diagnosis was assessed in 301 children with CML in the chronic phase who were enrolled in the International Registry for Chronic Myeloid Leukemia in Children and Adolescents...
May 12, 2017: Cancer
https://www.readbyqxmd.com/read/28497658/toxic-epidermal-necrolysis-in-a-child-6-months-post-hematopoietic-stem-cell-transplantation
#16
Utako Oba, Hiroshi Yamada, So-Ichi Suenobu, Yusuke Nakamura, Akiko Ito, Yutaka Hatano, Nobuyoshi Itonaga, Kouichi Ohshima, Yuhki Koga, Shouichi Ohga, Kenji Ihara
TEN is a rare and critical disease mostly caused by drugs. It is mediated by activated CD8+ T cells that cause keratinocyte apoptosis with the assistance of cytokines/chemokines. We herein report a pediatric case of TEN after allogeneic HSCT with precursor B-cell acute lymphoblastic leukemia (pre-B-ALL) in second complete remission. Although we did not evaluate the T-cell subpopulation in blood or skin lesion of the patient, an imbalanced immune reconstitution after HSCT might additively contribute to the development of TEN...
May 12, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28494052/association-of-minimal-residual-disease-with-clinical-outcome-in-pediatric-and-adult-acute-lymphoblastic-leukemia-a-meta-analysis
#17
Donald A Berry, Shouhao Zhou, Howard Higley, Lata Mukundan, Shuangshuang Fu, Gregory H Reaman, Brent L Wood, Gary J Kelloff, J Milburn Jessup, Jerald P Radich
Importance: Minimal residual disease (MRD) refers to the presence of disease in cases deemed to be in complete remission by conventional pathologic analysis. Assessing the association of MRD status following induction therapy in patients with acute lymphoblastic leukemia (ALL) with relapse and mortality may improve the efficiency of clinical trials and accelerate drug development. Objective: To quantify the relationships between event-free survival (EFS) and overall survival (OS) with MRD status in pediatric and adult ALL using publications of clinical trials and other databases...
May 11, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28491865/the-role-of-the-central-nervous-system-microenvironment-in-pediatric-acute-lymphoblastic-leukemia
#18
REVIEW
Nathan P Gossai, Peter M Gordon
Acute lymphoblastic leukemia (ALL) is the most common cancer in children. While survival rates for ALL have improved, central nervous system (CNS) relapse remains a significant cause of treatment failure and treatment-related morbidity. Accordingly, there is a need to identify more efficacious and less toxic CNS-directed leukemia therapies. Extensive research has demonstrated a critical role of the bone marrow (BM) microenvironment in leukemia development, maintenance, and chemoresistance. Moreover, therapies to disrupt mechanisms of BM microenvironment-mediated leukemia survival and chemoresistance represent new, promising approaches to cancer therapy...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28484171/current-diagnosis-and-treatment-for-pediatric-acute-myeloid-leukemia
#19
Norio Shiba
Acute myeloid leukemia (AML) is a complex disease caused by chromosomal aberrations, mutations, epigenetic modifications, and the deregulated expression of genes, leading to increased myeloid cell proliferation and decreased hematopoietic progenitor cell differentiation. Although most of these aberrations are correlated with prognosis, accurate risk stratification remains a challenge even after incorporating these molecular markers. Currently, some genetic mutations that allow risk stratification have been identified in adult AML, including DNMT3A and IDH1/2...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28482719/mef2c-dysregulated-pediatric-t-cell-acute-lymphoblastic-leukemia-is-associated-with-cdkn1b-deletions-and-a-poor-response-to-glucocorticoid-therapy
#20
Sara Colomer-Lahiguera, Markus Pisecker, Margit König, Karin Nebral, Winfried F Pickl, Maximilian O Kauer, Oskar A Haas, Reinhard Ullmann, Andishe Attarbaschi, Michael N Dworzak, Sabine Strehl
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematological disease in which multiple genetic abnormalities cooperate in the malignant transformation of T-lymphoid progenitors. Although in pediatric T-ALL, CDKN1B deletions occur in about 12% of the cases and represent one of the most frequent copy number alterations, neither their association with other genetic alterations nor the clinical characteristics of these patients have been determined yet. In this study, we show that loss of CDKN1B increased the prevalence of cell cycle regulator defects in immature T-ALL, usually only ascribed to CDKN2A/B deletions, and that CDKN1B deletions frequently coincide with expression of MEF2C, considered as one of the driving oncogenes in immature early T-cell precursor (ETP) ALL...
May 9, 2017: Leukemia & Lymphoma
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