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Pediatric leukemias

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https://www.readbyqxmd.com/read/28650467/genome-wide-loss-of-function-genetic-screening-identifies-opioid-receptor-%C3%AE-1-as-a-key-regulator-of-l-asparaginase-resistance-in-pediatric-acute-lymphoblastic-leukemia
#1
S M Kang, J L Rosales, V Meier-Stephenson, S Kim, K Y Lee, A Narendran
L-asparaginase is a critical chemotherapeutic agent for acute lymphoblastic leukemia (ALL). It hydrolyzes plasma asparagine into aspartate and NH3, causing asparagine deficit and inhibition of protein synthesis and eventually, leukemic cell death. However, patient relapse often occurs due to development of resistance. The molecular mechanism by which ALL cells acquire resistance to L-asparaginase is unknown. Therefore, we sought to identify genes that are involved in L-asparaginase resistance in primary leukemic cells...
June 26, 2017: Oncogene
https://www.readbyqxmd.com/read/28649891/new-targeted-therapies-for-relapsed-pediatric-lymphoblastic-leukemia
#2
Joanna Pierro, Laura E Hogan, Teena Bhatla, William L Carroll
The improvement in outcomes for children with acute lymphoblastic leukemia (ALL) is one of the greatest success stories of modern oncology however the prognosis for patients who relapse remains dismal. Recent discoveries by high resolution genomic technologies have characterized the biology of relapsed leukemia, most notably pathways leading to the drug resistant phenotype. These observations open the possibility of targeting such pathways to prevent and/or treat relapse. Likewise, early experiences with new immunotherapeutic approaches have shown great promise...
June 25, 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28648946/end-of-therapy-minimal-residual-disease-mrd-measurement-in-children-with-all-does-not-predict-relapse
#3
Tahani Hani Sarrawi, Ismael Zayyat, Fareed Barakat, Maha Rezeq, Salam Abu Jmaian, Faris Madanat
Minimal residual disease (MRD) monitoring opened a new era for childhood acute lymphoblastic leukemia (ALL), and is widely used for risk adapted therapy in the major study groups (Borowitz et al. 2015; Eckert et al., 2015; Peregud-Pogorzelsk et al., 2003). MRD is measured either by polymerase chain reaction (PCR) or flow cytometry (FCM) (Campana, 2009). Most studies have concentrated on measuring MRD during or at end of induction, and after consolidation therapy, to stratify patients and to predict relapse (Sutton et al...
June 17, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28644949/hematopoietic-cell-transplantation-for-acute-lymphoblastic-leukemia-in-adult-patients
#4
REVIEW
Riad El Fakih, Syed Ahmed, Feras Alfraih, Amr Hanbali
Acute lymphoblastic leukemia (ALL) consists of precursor B ALL or T ALL phenotypes. In the pediatric population, ALL patients enjoy an 80% long-term survival with the current pediatric chemotherapy protocols as compared with 50% long-term survival in the adult population. In adults, complete remission rates are similar to those of pediatric patients; however, long-term survival is much lower with the majority of deaths attributable to relapsed disease. Postremission consolidation strategies in adults include chemotherapy, autologous, or allogeneic transplant...
June 15, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28644306/the-associations-of-height-for-age-weight-for-age-and-weight-for-height-with-pediatric-acute-lymphoblastic-leukemia
#5
Jeremy M Schraw, Ann T Henson, Michael E Scheurer, Michele R Forman
Height at diagnosis has been analyzed in connection with acute lymphoblastic leukemia (ALL). Most prior studies have compared cases to national reference data derived from previous birth cohorts. Our objective was to determine the association of height-for-age Z score (HAZ) at time of diagnosis with the odds ratio (OR) of ALL in a case-control study (N=498) with a contemporaneous population of age-matched, sex-matched, and ethnicity-matched controls. We hypothesized that cases would have greater mean HAZ at time of diagnosis/interview, after adjustment for weight-for-age (WAZ) and weight-for-height (WHZ)...
July 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28642445/identification-of-a-cytogenetic-and-molecular-subgroup-of-acute-myeloid-leukemias-showing-sensitivity-to-l-asparaginase
#6
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
https://www.readbyqxmd.com/read/28642300/center-level-variation-in-accuracy-of-adverse-event-reporting-in-a-clinical-trial-for-pediatric-acute-myeloid-leukemia-a-report-from-the-children-s-oncology-group
#7
Tamara P Miller, Yimei Li, Marko Kavcic, Kelly D Getz, Yuan-Shun V Huang, Lillian Sung, Todd A Alonzo, Robert Gerbing, Marla H Daves, Terzah M Horton, Michael A Pulsipher, Jessica Pollard, Rochelle Bagatell, Alix E Seif, Brian T Fisher, Selina Luger, Alan S Gamis, Peter C Adamson, Richard Aplenc
No abstract text is available yet for this article.
June 22, 2017: Haematologica
https://www.readbyqxmd.com/read/28639735/neonates-with-cancer-and-causes-of-death-lessons-from-615-cases-in-the-seer-databases
#8
Ahmad S Alfaar, Waleed M Hassan, Mohamed Sabry Bakry, Ibrahim Qaddoumi
Neonatal tumors are rare with no standard treatment approaches to these diseases, and the patients experience poor outcomes. Our aim was to determine the distribution of cancers affecting neonates and compare survival between these cancers and older children. We analyzed SEER data (1973-2007) from patients who were younger than 2 years at diagnosis of malignancy. Special permission was granted to access the detailed (i.e., age in months) data of those patients. The Chi-square Log-rank test was used to compare survival between neonates (aged <1 month) and older children (>1 month to <2 years)...
June 22, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28637877/ex-vivoexpanded-adaptive-nk-cells-effectively-kill-primary-acute-lymphoblastic-leukemia-cells
#9
Lisa L Liu, Vivien Beziat, Vincent Oei Yi Sheng, Aline Pfefferle, Marie Schaffer, Soren Lehmann, Eva Hellstrom-Lindberg, Stefan Soderhall, Mats Heyman, Dan Grander, Karl-Johan Malmberg
Manipulation of human NK cell repertoires promises more effective strategies for NK cell-based cancer immunotherapy. A subset of highly differentiated NK cells, termed adaptive NK cells, expands naturally in vivo in response to human cytomegalovirus (HCMV) infection, carries unique repertoires of inhibitory killer cell immunoglobulin-like receptors (KIRs), and displays strong cytotoxicity against tumor cells. Here, we established a robust and scalable protocol for ex vivo generation and expansion of adaptive NK cells for cell therapy against pediatric acute lymphoblastic leukemia (ALL)...
June 21, 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/28632246/declines-noted-in-cognitive-processes-and-association-with-achievement-among-children-with-leukemia
#10
Kathleen C Insel, Marilyn J Hockenberry, Lynette L Harris, Kari M Koerner, Zhenqiang Lu, Kristin B Adkins, Olga A Taylor, Patricia M Gundy, Ida M Moore
PURPOSE/OBJECTIVES: To assess change in specific cognitive processes during treatment with chemotherapy only among children with acute lymphoblastic leukemia (ALL). 
. DESIGN: A prospective, repeated measures design.
. SETTING: Pediatric oncology treatment centers at Banner-University Medical Center Tucson/Banner Children's-Diamond Medical Center (University of Arizona) and Texas Children's Cancer and Hematology centers (Baylor College of Medicine) in Houston...
July 1, 2017: Oncology Nursing Forum
https://www.readbyqxmd.com/read/28628559/the-mir-1206-microrna-variant-is-associated-with-methotrexate-induced-oral-mucositis-in-pediatric-acute-lymphoblastic-leukemia
#11
Angela Gutierrez-Camino, Natanja Oosterom, Marissa A H den Hoed, Elixabet Lopez-Lopez, Idoia Martin-Guerrero, Saskia M F Pluijm, Rob Pieters, Robert de Jonge, Wim J E Tissing, Sandra G Heil, Africa García-Orad, Marry M van den Heuvel-Eibrink
Five-year survival rates of pediatric acute lymphoblastic leukemia (ALL) have reached 90% in the developed countries. However, toxicity because of methotrexate (MTX) occurs frequently. Variety in the occurrence of toxicity is partly determined by single nucleotide polymorphisms (SNPs) in coding regions. Recently, five SNPs in non-coding pre-microRNAs and microRNA processing (miRNA) genes were identified in association with MTX-induced oral mucositis. This study aimed to replicate the association of these miRNA variants in relation to MTX-induced oral mucositis in a prospective childhood ALL cohort...
June 16, 2017: Pharmacogenetics and Genomics
https://www.readbyqxmd.com/read/28624713/aneuploidy-identification-in-pre-b-acute-lymphoblastic-leukemia-patients-at-diagnosis-by-multiplex-ligation-dependent-probe-amplification-mlpa
#12
A Vázquez-Reyes, L Bobadilla-Morales, C Barba-Barba, G Macías-Salcedo, G Serafín-Saucedo, M E Velázquez-Rivera, M C Almodóvar-Cuevas, A Márquez-Mora, H J Pimentel-Gutiérrez, C Ortega-de-la-Torre, R M Cruz-Osorio, S Nava-Gervasio, J Rivera-Vargas, F Sánchez-Zubieta, J R Corona-Rivera, A Corona-Rivera
Three-quarters of the patients with acute lymphoblastic leukemia (ALL), show numerical or structural chromosomal alterations, which are important factors in leukemogenesis. The use of Multiplex Ligation-dependent Probes Amplification (MLPA) has been mainly limited for searching copy number alterations of genes, suggesting that MLPA could detect numerical alterations in cancer. However, the use of MLPA in pediatrics to analyze subtelomeric sequences for aneuploidy detection has not been considered in previous studies...
June 1, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28624542/outcome-and-clinical-significance-of-immunophenotypic-markers-expressed-in-different-treatment-protocols-of-pediatric-patients-with-t-all-in-developing-countries
#13
Douaa M Sayed, Heba Abdel Razik Sayed, Heba N Raslan, Amany M Ali, Asmaa Zahran, Reema Al-Hayek, Saad A Daama, Arwa Al-Saber
BACKGROUND: T-cell acute lymphoblastic leukemia (T-ALL) accounts for about 15% of pediatric ALL. With wider use of intensive chemotherapy, the prognosis for childhood T-ALL has improved. Further gains in treatment outcome will likely require methods to identify patients who continue to fail on contemporary protocols. This study aimed to evaluate pediatric patients with T-ALL at 2 different Arabic cancer centers regarding their clinicopathologic, immunophenotypic, and cytogenetic features and outcome...
May 10, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28623857/vincristine-induced-neuropathy-in-pediatric-patients-with-acute-lymphoblastic-leukemia-in-oman-frequent-autonomic-and-more-severe-cranial-nerve-involvement
#14
Hanan F Nazir, Amna AlFutaisi, Mathew Zacharia, Mohamed Elshinawy, Surekha T Mevada, Abdulhakim Alrawas, Doaa Khater, Deepali Jaju, Yasser Wali
BACKGROUND: Vincristine (VCR) induced peripheral neuropathy is a common complication in children with acute lymphoblastic leukemia (ALL). PROCEDURES: A retrospective data analysis over an interval of 10 years (2006-2016) of all children with ALL seen at Sultan Qaboos University Hospital was carried out. Electronic medical records of eligible patients were reviewed. Patients with clinical evidence of neuropathy and abnormal nerve conduction studies (NCSs) were included in the study...
June 17, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28620004/cancer-and-central-nervous-system-tumor-surveillance-in-pediatric-neurofibromatosis-1
#15
REVIEW
D Gareth R Evans, Hector Salvador, Vivian Y Chang, Ayelet Erez, Stephan D Voss, Kami Wolfe Schneider, Hamish S Scott, Sharon E Plon, Uri Tabori
Although the neurofibromatoses consist of at least three autosomal dominantly inherited disorders, neurofibromatosis 1 (NF1), neurofibromatosis 2 (NF2), and schwannomatosis, NF1 represents a multisystem pleiotropic condition very different from the other two. NF1 is a genetic syndrome first manifesting in childhood; affecting multiple organs, childhood development, and neurocognitive status; and presenting the clinician with often complex management decisions that require a multidisciplinary approach. Molecular genetic testing (see article for detailed discussion) is recommended to confirm NF1, particularly in children fulfilling only pigmentary features of the diagnostic criteria...
June 15, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28618970/letter-regarding-zhao-et-al-entitled-dpyd-gene-polymorphisms-are-associated-with-risk-and-chemotherapy-prognosis-in-pediatric-patients-with-acute-lymphoblastic-leukemia
#16
Maarten J Deenen, Linda M Henricks, Gabe S Sonke, Jan Hm Schellens, Didier Meulendijks
Zhao et al. investigated the association between germline genetic polymorphisms in DPYD, the gene encoding dihydropyrimidine dehydrogenase, and (1) the risk of developing pediatric acute lymphoblastic leukemia and (2) outcome of acute lymphoblastic leukemia following the treatment with 5-fluorouracil plus oxaliplatin (FOLFOX). The authors found that the common DPYD variant c.85T>C (rs1801265, DPYD*9A) was significantly associated with (1) risk of developing pediatric acute lymphoblastic leukemia, (2) complete response rate, (3) event-free survival, and (4) treatment-related toxicity...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28612674/difficulty-in-the-diagnosis-of-bone-and-joint-pain-associated-with-pediatric-acute-leukemia-comparison-with-juvenile-idiopathic-arthritis
#17
Takao Tsujioka, Minako Sugiyama, Masahiro Ueki, Yusuke Tozawa, Shunichiro Takezaki, Junjiro Ohshima, Yuko Cho, Masafumi Yamada, Akihiro Iguchi, Ichiro Kobayashi, Tadashi Ariga
OBJECTIVES: Acute leukemia often causes osteoarthralgia. The aim of this study is characterization of leukemia-associated osteoarthralgia in comparison with juvenile idiopathic arthritis (JIA). METHODS: We retrospectively reviewed clinical records of 31 patients with acute leukemia and 13 patients with articular JIA diagnosed between January 2008 and March 2013. Clinical and laboratory findings at the initial examination were compared among the three groups; 10 leukemia with and 21 leukemia without osteoarthralgia and 13 JIA groups...
June 14, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28609016/multiparametric-whole-blood-dissection-a-one-shot-comprehensive-picture-of-the-human-hematopoietic-system
#18
Luca Basso-Ricci, Serena Scala, Raffaella Milani, Maddalena Migliavacca, Attilio Rovelli, Maria Ester Bernardo, Fabio Ciceri, Alessandro Aiuti, Luca Biasco
Human hematopoiesis is a complex and dynamic system where morphologically and functionally diverse mature cell types are generated and maintained throughout life by bone marrow (BM) Hematopoietic Stem/Progenitor Cells (HSPC). Congenital and acquired hematopoietic disorders are often diagnosed through the detection of aberrant frequency or composition of hematopoietic cell populations. We here describe a novel protocol, called "Whole Blood Dissection" (WBD), capable of analyzing in a single test-tube, hematopoietic progenitors and all major mature cell lineages composing either BM or peripheral blood (PB) through a multiparametric flow-cytometry analysis...
June 13, 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28605290/early-response-based-therapy-stratification-improves-survival-in-adult-early-thymic-precursor-acute-lymphoblastic-leukemia-a-group-for-research-on-adult-acute-lymphoblastic-leukemia-study
#19
Jonathan Bond, Carlos Graux, Ludovic Lhermitte, Diane Lara, Thomas Cluzeau, Thibaut Leguay, Agata Cieslak, Amélie Trinquand, Cedric Pastoret, Mohamed Belhocine, Salvatore Spicuglia, Véronique Lheritier, Stéphane Leprêtre, Xavier Thomas, Françoise Huguet, Norbert Ifrah, Hervé Dombret, Elizabeth Macintyre, Nicolas Boissel, Vahid Asnafi
Purpose Early thymic precursor (ETP) acute lymphoblastic leukemia (ALL) is an immunophenotypically defined subgroup of T-cell ALL (T-ALL) associated with high rates of intrinsic treatment resistance. Studies in children have shown that the negative prognostic impact of chemotherapy resistance is abrogated by the implementation of early response-based intensification strategies. Comparable data in adults are lacking. Patients and Methods We performed comprehensive clinicobiologic, genetic, and survival analyses of a large cohort of 213 adult patients with T-ALL, including 47 patients with ETP-ALL, treated in the GRAALL (Group for Research on Adult Acute Lymphoblastic Leukemia) -2003 and -2005 studies...
June 12, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28604239/continuing-challenges-and-current-issues-in-acute-lymphoblastic-leukemia
#20
Ankit Kansagra, Saurabh Dahiya, Mark Litzow
Conventional cytotoxic chemotherapy used to treat acute lymphoblastic leukemia (ALL) has resulted into high cure rates for pediatric patients, however outcomes for adult patients remain suboptimal. The 5-year overall survival is only 30-40% in adults and elderly patients with ALL compared to 90% in children. We have seen major advances in our understanding and management of ALL related to identification of new cytogenetic and molecular abnormalities and development of novel targeted agents for the treatment of ALL...
June 11, 2017: Leukemia & Lymphoma
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