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https://www.readbyqxmd.com/read/28806282/adenovirus-infection-in-children-with-acute-myeloid-leukemia-a-report-from-the-canadian-infection-in-acute-myeloid-leukemia-research-group
#1
Samuele Renzi, Salah Ali, Carol Portwine, David Mitchell, David Dix, Victor Lewis, Victoria Price, Michelle Science, Lillian Sung
BACKGROUND: Children with acute myeloid leukemia (AML) are at high risk of life-threatening bacterial and fungal infection. However, little is known about the prevalence or severity of adenovirus infection in this population. Objective was to describe the characteristics, treatments and outcomes of adenovirus infection in children with newly diagnosed AML. METHODS: We performed a retrospective chart review based upon two multi-center cohort studies which focused on identifying risk factors for infection in children with AML...
August 10, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28797998/the-effect-of-dose-volume-parameters-on-central-nervous-system-relapse-in-pediatric-patients-with-acute-leukemia-receiving-prophylactic-cranial-irradiation
#2
Zeliha Guzeloz, Ayse Nur Demiral, Fatma Eren, Mehmet Adigul, Ahmet Ergin Capar, Handan Cakmakci, Sebnem Yilmaz, Ozlem Tufekci, Hale Oren, Riza Çetingoz
AIM OF THE STUDY: To investigate the effects of dosevolume parameters of brain parenchyma, optic nerves (ONs) and cribriform plate (CP), which were determined on central nervous system (CNS) control in pediatric leukemia patients who have undergone prophylactic cranial irradiation (PCI) at our department. PATIENTS AND METHODS: In the current study, the records of 14 patients were examined retrospectively. Along with the minimum and maximum doses for brain and CP, D95% (minimal dose received by the 95% volume of a structure) and V95% (percent volume of target receiving 95% of prescribed dose) could be obtained from the dose-volume histogram...
May 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28792686/viral-surveillance-using-pcr-during-treatment-of-aml-and-all
#3
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/28792268/kit-mutations-correlate-with-adverse-survival-in-children-with-core-binding-factor-acute-myeloid-leukemia
#4
Xi Chen, Hu Dou, Xingjuan Wang, Yi Huang, Ling Lu, Junqing Bin, Yongchun Su, Lin Zou, Jie Yu, Liming Bao
The prevalence and clinical relevance of KIT mutations in childhood core-binding factor (CBF) acute myeloid leukemia (AML) have not been well characterized. In this study, a total of 212 children with de novo AML were enrolled from a Chinese population and 50 (23.5%) of the patients were deemed CBF-AML. KIT mutations were identified in 30% of the CBF-AML cohort. The KIT mutations were clustered in exon 17 and exon 8, and KIT mutations in exons 8 and 17 were correlated with a shorter overall survival (OS) (5-year OS: 30...
August 9, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28771903/fludarabine-cytarabine-g-csf-and-idarubicin-for-children-with-relapsed-aml
#5
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/28768907/upregulated-heme-biosynthesis-an-exploitable-vulnerability-in-mycn-driven-leukemogenesis
#6
Yu Fukuda, Yao Wang, Shangli Lian, John Lynch, Shinjiro Nagai, Bruce Fanshawe, Ayten Kandilci, Laura J Janke, Geoffrey Neale, Yiping Fan, Brian P Sorrentino, Martine F Roussel, Gerard Grosveld, John D Schuetz
The increased heme biosynthesis long observed in leukemia was previously of unknown significance. Heme, synthesized from porphyrin precursors, plays a central role in oxygen metabolism and mitochondrial function, yet little is known about its role in leukemogenesis. Here, we show increased expression of heme biosynthetic genes, including UROD, only in pediatric AML samples that have high MYCN expression. High expression of both UROD and MYCN predicts poor overall survival and unfavorable outcomes in adult AML...
August 3, 2017: JCI Insight
https://www.readbyqxmd.com/read/28762602/hematopoietic-stem-cell-transplantation-in-pediatric-patients-with-acute-myeloid-leukemia-without-favorable-cytogenetics
#7
Jin Kyung Suh, Seong Wook Lee, Kyung-Nam Koh, Ho Joon Im, Eun Seok Choi, Seongsoo Jang, Chan-Jeoung Park, Jong Jin Seo
Intensified chemotherapy, HSCT, and supportive care improve the survival of pediatric patients with AML. However, no consensus has been reached regarding the role of HSCT in patients without favorable cytogenetics. We evaluated OS and EFS according to prognostic factors that affect clinical outcomes, including cytogenetics risk group, conditioning regimen, donor type, disease status at the time of HSCT, and number of chemotherapy cycles prior to HSCT in 65 pediatric patients with AML without favorable cytogenetics who underwent HSCT...
August 1, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28761277/bilateral-parotidomegaly-as-an-initial-manifestation-of-acute-lymphoblastic-leukemia-in-a-child-a-case-report-and-review-of-literature
#8
Latha Magatha Sneha, Kaarthikeyani Sankaravadivelu Subbiah, Julius Xavier Scott, Aruna Rajendiran
The more common causes of parotid enlargement in children are infections and inflammatory conditions. Primary neoplasms of the parotid glands are rare in pediatric age group; however, secondary malignancies have been reported in survivors of childhood leukemia. The parotid glands have been the sites of relapses in acute lymphoblastic leukemia (ALL) and acute myeloid leukemia. However, bilateral parotid involvement as an initial presentation of ALL is rarely reported. We present a case of an 8-year-old boy who presented with bilateral parotid enlargement as an initial manifestation of ALL...
January 2017: National Journal of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28743360/signs-and-symptoms-of-rheumatic-diseases-as-first-manifestation-of-pediatric-cancer-diagnosis-and-prognosis-implications
#9
Mariana Bertoldi Fonseca, Francisco Hugo Rodrigues Gomes, Elvis Terci Valera, Gecilmara Salviato Pileggi, Paula Braga Gonfiantini, Marcela Braga Gonfiantini, Virgínia Paes Leme Ferriani, Luciana Martins de Carvalho
OBJECTIVE: To assess the prevalence and describe the clinical, laboratory and radiological findings, treatment and outcome of children with cancer initially referred to a tertiary outpatient pediatric rheumatology clinic. METHODS: Retrospective analysis of medical records from patients identified in a list of 250 new patients attending the tertiary Pediatric Rheumatology Clinic, Ribeirão Preto Medical School hospital, University of São Paulo, from July 2013 to July 2015, whose final diagnosis was cancer...
July 2017: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/28727288/complications-preceding-early-deaths-in-black-and-white-children-with-acute-myeloid-leukemia
#10
Lena E Winestone, Kelly D Getz, Tamara P Miller, Yimei Li, Yuan-Shung Huang, Alix E Seif, Brian T Fisher, Richard Aplenc
Black patients have a twofold increased risk of induction mortality compared to White patients with acute myeloid leukemia (AML). We reviewed diagnosis and billing data from Pediatric Health Information System for 28 AML Induction I deaths to investigate conditions preceding death in White and Black patients. Half of deaths occurred within 10 days of initial diagnostic admission. Respiratory, cardiac, renal, and infectious complications were common prior to both White and Black deaths. Deaths in White patients were more commonly preceded by intracranial hemorrhage compared to deaths in Black patients...
July 20, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28724437/the-lncrna-casc15-regulates-sox4-expression-in-runx1-rearranged-acute-leukemia
#11
Thilini R Fernando, Jorge R Contreras, Matteo Zampini, Norma I Rodriguez-Malave, Michael O Alberti, Jaime Anguiano, Tiffany M Tran, Jayanth K Palanichamy, Jasmine Gajeton, Nolan M Ung, Cody J Aros, Ella V Waters, David Casero, Giuseppe Basso, Martina Pigazzi, Dinesh S Rao
BACKGROUND: Long non-coding RNAs (lncRNAs) play a variety of cellular roles, including regulation of transcription and translation, leading to alterations in gene expression. Some lncRNAs modulate the expression of chromosomally adjacent genes. Here, we assess the roles of the lncRNA CASC15 in regulation of a chromosomally nearby gene, SOX4, and its function in RUNX1/AML translocated leukemia. RESULTS: CASC15 is a conserved lncRNA that was upregulated in pediatric B-acute lymphoblastic leukemia (B-ALL) with t (12; 21) as well as pediatric acute myeloid leukemia (AML) with t (8; 21), both of which are associated with relatively better prognosis...
July 19, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28710806/clinical-features-and-prognostic-impact-of-prdm16-expression-in-adult-acute-myeloid-leukemia
#12
Genki Yamato, Hiroki Yamaguchi, Hiroshi Handa, Norio Shiba, Machiko Kawamura, Satoshi Wakita, Koiti Inokuchi, Yusuke Hara, Kentaro Ohki, Jun Okubo, Myoung-Ja Park, Manabu Sotomatsu, Hirokazu Arakawa, Yasuhide Hayashi
High PRDM16 (also known as MEL1) expression is a representative marker of acute myeloid leukemia (AML) with NUP98-NSD1 and is a significant predictive marker for poor prognosis in pediatric AML. However, the clinical features of adult AML with PRDM16 expression remain unclear. PRDM16 is highly homologous to MDS1/EVI1, which is an alternatively spliced transcript of MECOM (also known as EVI1). We investigated PRDM16 expression in 151 AML patients, with 47 (31%) exhibiting high PRDM16 expression (PRDM16/ABL1 ratio ≥ 0...
July 14, 2017: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28701730/the-mll-recombinome-of-acute-leukemias-in-2017
#13
C Meyer, T Burmeister, D Gröger, G Tsaur, L Fechina, S Renneville, R Sutton, N C Venn, M Emerenciano, M S Pombo-de-Oliveira, C Barbieri Blunck, B Almeida Lopes, J Zuna, J Trka, P Ballerini, H Lapillonne, M De Braekeleer, G Cazzaniga, L Corral Abascal, V H J van der Velden, E Delabesse, T S Park, S H Oh, M L M Silva, T Lund-Aho, V Juvonen, A S Moore, O Heidenreich, J Vormoor, E Zerkalenkova, Y Olshanskaya, C Bueno, P Menendez, S Teigler-Schlegel, U Zur Stadt, J Lentes, G Göhring, S Kustanovich, O Aleinikova, B W Schäfer, S Kubetzko, H O Madsen, B Gruhn, X Duarte, P Gameiro, E Lippert, S Bidet, J M Cayuela, E Clappier, C N Alonso, C M Zwaan, M M van den Heuvel-Eibrink, S Izraeli, L Trakhtenbrot, P Archer, J Hancock, A Möricke, J Alten, M Schrappe, M Stanulla, S Strehl, A Attarbaschi, M Dworzak, O A Haas, R Panzer-Grümayer, L Sedék, T Szczepański, S Caye, L Suarez, H Cavé, R Marschalek
Chromosomal rearrangements of the human MLL/KMT2A gene are associated with infant, pediatric, adult and therapy-induced acute leukemias. Here, we present the data obtained from 2345 acute leukemia patients. Genomic breakpoints within the MLL gene and the involved translocation partner genes (TPGs) were determined and 11 novel TPGs were identified. Thus, a total of 135 different MLL rearrangements habe been identified so far, of which 94 TPGs are now characterized at the molecular level. Thirty-five out of these 94 TPGs occur recurrently, but only 9 specific gene fusions account for more than 90% of all illegitimate recombinations of the MLL gene...
July 13, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28694182/allogeneic-hematopoietic-stem-cell-transplantation-with-myeloablative-conditioning-is-associated-with-favorable-outcomes-in-mixed-phenotype-acute-leukemia
#14
Bartlomiej M Getta, Mikhail Roshal, Junting Zheng, Jae H Park, Eytan M Stein, Ross Levine, Esperanza B Papadopoulos, Ann A Jakubowski, Nancy A Kernan, Peter Steinherz, Richard J O'Reilly, Miguel-Angel Perales, Sergio A Giralt, Martin S Tallman, Brian C Shaffer
Mixed phenotype acute leukemia (MPAL) represents a poorly characterized group of acute leukemias that lack an accepted therapeutic approach and are typically associated with poor outcomes. We present our experience of genomic profiling, pretransplantation therapy, and transplantation outcomes for 36 well-characterized pediatric and adult patients with MPAL, defined according to the 2016 World Health Organization leukemia update. A predominance of acute lymphoid leukemia (ALL)-associated mutations and cytogenetic abnormalities was noted...
July 8, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28680749/tumor-priming-converts-nk-cells-to-memory-like-nk-cells
#15
Marina Pal, Lisa Schwab, Anastasiya Yermakova, Emily M Mace, Rainer Claus, Ann-Christin Krahl, Jeanette Woiterski, Udo F Hartwig, Jordan S Orange, Rupert Handgretinger, Maya C André
Fascinating earlier evidence suggests an intrinsic capacity of human natural killer (NK) cells to acquire adaptive immune features in the context of cytomegalovirus (CMV) infection or pro-inflammatory cytokine stimulation. Since the role of memory NK cells in cancer has so far remained elusive and adoptive NK cell transfer in relapsing pediatric acute B cell precursor leukemia (BCP-ALL) patients awaits improvement, we asked the question whether tumor-priming could promote the generation of memory NK cells with enhanced graft-vs...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28670435/acute-myeloid-leukemia-with-ram-immunophenotype-a-pediatric-case-with-unusual-morphologic-features
#16
Miriam Conces, Rolla Abu-Arja, Suzanne Reed, Hemalatha G Rangarajan, Terri L Guinipero, Michael R Loken, Lisa Eidenschink Brodersen, Samir B Kahwash
The RAM immunophenotype has been recently described as a subtype of acute myelogenous leukemia (AML) that is characterized clinically by extremely poor prognosis. We present a case of AML with RAM immunophenotype in a 5-year-old patient that resulted in poor outcome despite early hematopoietic cell transplant. We describe the unusual morphologic features that, along with the distinct immunophenotype, may provide initial diagnostic clues and further justify the classification of this AML variant as a rather distinct subtype...
June 1, 2017: Hematology Reports
https://www.readbyqxmd.com/read/28658145/central-hypothyroidism-in-a-pediatric-case-of-primary-acute-monoblastic-leukemia-with-central-nervous-system-infiltration-a-case-report
#17
Yuya Sato, Satomi Koyama, Shigeko Kuwashima, Masaya Kato, Mayuko Okuya, Keitaro Fukushima, Hidemitsu Kurosawa, Osamu Arisaka
RATIONALE: Central nervous system (CNS) leukemia is a frequent diagnosis in pediatric acute myeloblastic leukemia (AML) and includes neural symptoms. However, CNS leukemia is rarely associated with central hypsothyroidism. PATIENT CONCERNS AND DIAGNOSES: A 2-year-old female with AML with MLL rearrangement presented with CNS infiltration. Laboratory tests suggested the presence of central hypothyroidism (thyroid-stimulating hormone [TSH]: 0.48 mIU/ml, normal range 0...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28655787/cytosine-deaminase-apobec3a-sensitizes-leukemia-cells-to-inhibition-of-the-dna-replication-checkpoint
#18
Abby M Green, Konstantin Budagyan, Katharina E Hayer, Morgann A Reed, Milan R Savani, Gerald B Wertheim, Matthew D Weitzman
Mutational signatures in cancer genomes have implicated the APOBEC3 cytosine deaminases in oncogenesis, possibly offering a therapeutic vulnerability. Elevated APOBEC3B expression has been detected in solid tumors, but expression of APOBEC3A (A3A) in cancer has not been described to date. Here, we report that A3A is highly expressed in subsets of pediatric and adult acute myelogenous leukemia (AML). We modeled A3A expression in the THP1 AML cell line by introducing an inducible A3A gene. A3A expression caused ATR-dependent phosphorylation of Chk1 and cell-cycle arrest, consistent with replication checkpoint activation...
June 27, 2017: Cancer Research
https://www.readbyqxmd.com/read/28655785/a-small-molecule-inhibitor-of-wee1-azd1775-synergizes-with-olaparib-by-impairing-homologous-recombination-and-enhancing-dna-damage-and-apoptosis-in-acute-leukemia
#19
Tamara B Garcia, Jonathan C Snedeker, Dmitry Baturin, Lori Gardner, Susan P Fosmire, Chengjing Zhou, Craig T Jordan, Sujatha Venkataraman, Rajeev Vibhakar, Christopher C Porter
Although some patients with acute leukemia have good prognoses, the prognosis of adult and pediatric patients who relapse or cannot tolerate standard chemotherapy is poor. Inhibition of WEE1 with AZD1775 has been shown to sensitize cancer cells to genotoxic chemotherapies including cytarabine in AML and T-ALL. Inhibition of WEE1 impairs homologous recombination by indirectly inhibiting BRCA2. Thus, we sought to determine if AZD1775 could sensitize cells to the PARP1/2 inhibitor olaparib. We found that combined treatment with AZD1775 and olaparib was synergistic in AML and ALL cells, and this combination impaired proliferative capacity upon drug withdrawal...
June 27, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28642445/identification-of-a-cytogenetic-and-molecular-subgroup-of-acute-myeloid-leukemias-showing-sensitivity-to-l-asparaginase
#20
Salvatore Nicola Bertuccio, Salvatore Serravalle, Annalisa Astolfi, Annalisa Lonetti, Valentina Indio, Anna Leszl, Andrea Pession, Fraia Melchionda
L-Asparaginase (L-Asp) is an enzyme that catalyzes the hydrolysis of L-asparagine to L-aspartic acid, and its depletion induces leukemic cell death. L-Asp is an important component of treatment regimens for Acute Lymphoblastic Leukemia (ALL). Sensitivity to L-Asp is due to the absence of L-Asparagine synthetase (ASNS), the enzyme that catalyzes the biosynthesis of L-asparagine. ASNS gene is located on 7q21.3, and its increased expression in ALLs correlates with L-Asp resistance. Chromosome 7 monosomy (-7) is a recurrent aberration in myeloid disorders, particularly in adverse-risk Acute Myeloid Leukemias (AMLs) and therapy-related myeloid neoplasms (t-MN), that leads to a significant downregulation of the deleted genes, including ASNS...
June 19, 2017: Oncotarget
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