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Leukemia in children

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https://www.readbyqxmd.com/read/27913534/myelodysplastic-and-myeloproliferative-disorders-of-childhood
#1
Henrik Hasle
Myelodysplastic syndrome (MDS) and myeloproliferative disorders are rare in children; they are divided into low-grade MDS (refractory cytopenia of childhood [RCC]), advanced MDS (refractory anemia with excess blasts in transformation), and juvenile myelomonocytic leukemia (JMML), each with different characteristics and management strategies. Underlying genetic predisposition is recognized in an increasing number of patients. Germ line GATA2 mutation is found in 70% of adolescents with MDS and monosomy 7. It is challenging to distinguish RCC from aplastic anemia, inherited bone marrow failure, and reactive conditions...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913529/ph-like-acute-lymphoblastic-leukemia
#2
Thai Hoa Tran, Mignon L Loh
Philadelphia chromosome-like acute lymphoblastic leukemia (Ph-like ALL) is a newly identified high-risk (HR) B-lineage ALL subtype, accounting for ∼15% of children with National Cancer Institute-defined HR B-ALL. It occurs more frequently in adolescents and adults, having been reported in as much as 27% of young adults with ALL between 21 and 39 years of age. It exhibits adverse clinical features, confers a poor prognosis, and harbors a diverse range of genetic alterations that activate cytokine receptor genes and kinase signaling pathways, making it amenable to treatment with tyrosine kinase inhibitor (TKI) therapy...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913502/mrd-in-aml-does-it-already-guide-therapy-decision-making
#3
Gert Ossenkoppele, Gerrit Jan Schuurhuis
Prognostic factors determined at diagnosis are predictive for outcome whereas achievement of morphological complete remission (CR) is still an important end point during treatment. Residual disease after therapy may reflect the sum of all diagnosis and postdiagnosis resistance mechanisms/factors; its measurement could hypothetically be very instrumental for guiding treatment. The possibility of defining residual disease (minimal residual disease [MRD]) far below the level of 5% blast cells is changing the landscape of risk classification...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913496/discussing-and-managing-hematologic-germ-line-variants
#4
Wendy Kohlmann, Joshua D Schiffman
With the introduction of genomic technologies, more hereditary cancer syndromes with hematologic malignancies are being described. Up to 10% of hematologic malignancies in children and adults may be the result of an underlying inherited genetic risk. Managing these patients with hereditary hematologic malignancies, including familial leukemia, remains a clinical challenge because there is little information about these relatively rare disorders. This article covers some of the issues related to the diagnosis and interpretation of variants associated with hereditary hematologic malignancies, including the importance of an accurate family history in interpreting genetic variants associated with disease...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27908736/cd98-mediated-adhesive-signaling-enables-the-establishment-and-propagation-of-acute-myelogenous-leukemia
#5
Jeevisha Bajaj, Takaaki Konuma, Nikki K Lytle, Hyog Young Kwon, Jailal N Ablack, Joseph M Cantor, David Rizzieri, Charles Chuah, Vivian G Oehler, Elizabeth H Broome, Edward D Ball, Edward H van der Horst, Mark H Ginsberg, Tannishtha Reya
Acute myelogenous leukemia (AML) is an aggressive disease associated with drug resistance and relapse. To improve therapeutic strategies, it is critical to better understand the mechanisms that underlie AML progression. Here we show that the integrin binding glycoprotein CD98 plays a central role in AML. CD98 promotes AML propagation and lethality by driving engagement of leukemia cells with their microenvironment and maintaining leukemic stem cells. Further, delivery of a humanized anti-CD98 antibody blocks growth of patient-derived AML, highlighting the importance of this pathway in human disease...
November 14, 2016: Cancer Cell
https://www.readbyqxmd.com/read/27906794/health-related-quality-of-life-hr-qol-and-chronic-health-conditions-in-survivors-of-childhood-acute-myeloid-leukemia-aml-with-down-syndrome-ds-a-report-from-the-children-s-oncology-group
#6
Kris Ann P Schultz, Lu Chen, Alicia Kunin-Batson, Zhengjia Chen, William G Woods, Alan Gamis, Toana Kawashima, Kevin C Oeffinger, H Stacy Nicholson, Joseph P Neglia
Survival rates for children with Down syndrome (DS) and acute myeloid leukemia (AML) are high; however, little is known regarding the health-related quality of life (HR-QOL) of these survivors. Individuals who survived ≥5 years following diagnosis of childhood AML were invited to complete parent or patient-report surveys measuring HR-QOL and chronic health conditions. In total, 26 individuals with DS had a median age at diagnosis of 1.8 years (range, 0.77 to 10.9 y) and median age at interview of 15 years (range, 8...
November 30, 2016: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/27906481/experience-and-nursing-needs-of-school-age-children-undergoing-lumbar-puncture-during-the-treatment-of-acute-lymphoblastic-leukemia-a-descriptive-and-qualitative-study
#7
Anwei Xie, Yuying Shan, Mei E Niu, Yi Chen, Xiya Wang
AIMS AND OBJECTIVES: To describe experiences and nursing needs of school-age Chinese children undergoing lumbar puncture for the treatment of acute lymphoblastic leukemia (ALL). BACKGROUND: Lumbar puncture is an invasive procedure, causing psychological changes and physical discomfort in patients. In a previous study, it was proved that distraction intervention, such as music therapy, relieves pain and anxiety. There is limited evidence regarding the experience and needs of school-age children during lumbar puncture after being diagnosed with acute lymphoblastic leukemia...
December 1, 2016: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/27905678/a-phase-i-ii-trial-of-at9283-a-selective-inhibitor-of-aurora-kinase-in-children-with-relapsed-or-refractory-acute-leukemia-challenges-to-run-early-phase-clinical-trials-for-children-with-leukemia
#8
B Vormoor, G J Veal, M J Griffin, A V Boddy, J Irving, L Minto, M Case, U Banerji, K E Swales, J R Tall, A S Moore, M Toguchi, G Acton, K Dyer, C Schwab, C J Harrison, J D Grainger, D Lancaster, P Kearns, D Hargrave, J Vormoor
Aurora kinases regulate mitosis and are commonly overexpressed in leukemia. This phase I/IIa study of AT9283, a multikinase inhibitor, was designed to identify maximal tolerated doses, safety, pharmacokinetics, and pharmacodynamic activity in children with relapsed/refractory acute leukemia. The trial suffered from poor recruitment and terminated early, therefore failing to identify its primary endpoints. AT9283 caused tolerable toxicity, but failed to show clinical responses. Future trials should be based on robust preclinical data that provide an indication of which patients may benefit from the experimental agent, and recruitment should be improved through international collaborations and early combination with established treatment strategies...
December 1, 2016: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/27904561/analysis-of-outcomes-and-prognostic-factors-of-acute-lymphoblastic-leukemia-patients-treated-by-mcp841-protocol-a-regional-cancer-center-experience
#9
Akhil Kapoor, Ashok Kalwar, Narender Kumar, Mukesh Kumar Singhal, Surender Beniwal, Harvindra Singh Kumar
BACKGROUND: A dramatic improvement in the survival of acute lymphoblastic leukemia (ALL) patients in the last three decades has been observed. MCP 841 protocol is an old but effective tool with tolerable toxicities. The objective of this study was to estimate the relapse-free survival of ALL patients treated uniformly with MCP 841 protocol on the basis of various prognostic factors. MATERIALS AND METHODS: The study design was retrospective and it was conducted in a regional cancer center of Northwest India...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27903646/whole-transcriptome-sequencing-identified-a-distinct-subtype-of-acute-lymphoblastic-leukemia-with-predominant-genomic-abnormalities-of-ep300-and-crebbp
#10
Maoxiang Qian, Hui Zhang, Shirley Kow-Yin Kham, Shuguang Liu, Chuang Jiang, Xujie Zhao, Yi Lu, Charnise Goodings, Ting-Nien Lin, Ranran Zhang, Takaya Moriyama, Zhaohong Yin, Zhenhua Li, Thuan Chong Quah, Hany Ariffin, Ah Moy Tan, Shuhong Shen, Deepa Bhojwani, Shaoyan Hu, Suning Chen, Huyong Zheng, Ching-Hon Pui, Allen Eng-Juh Yeoh, Jun J Yang
Chromosomal translocations are a genomic hallmark of many hematologic malignancies. Often as initiating events, these structural abnormalities result in fusion proteins involving transcription factors important for hematopoietic differentiation and/or signaling molecules regulating cell proliferation and cell cycle. In contrast, epigenetic regulator genes are more frequently targeted by somatic sequence mutations, possibly as secondary events to further potentiate leukemogenesis. Through comprehensive whole transcriptome sequencing of 231 children with acute lymphoblastic leukemia (ALL), we identified 58 putative functional and predominant fusion genes in 54...
November 30, 2016: Genome Research
https://www.readbyqxmd.com/read/27903530/near-haploid-and-low-hypodiploid-acute-lymphoblastic-leukemia-two-distinct-subtypes-but-consistently-poor-prognosis
#11
Setareh Safavi, Kajsa Paulsson
Hypodiploidy <40 chromosomes is an uncommon genetic feature of acute lymphoblastic leukemia (ALL) in both children and adults. It has long been clear by cytogenetic analyses, and recently confirmed by mutational profiling, that these cases may be further subdivided into two subtypes: near-haploid ALL with 24-30 chromosomes and low hypodiploid ALL with 31-39 chromosomes. Both groups are associated with a very poor prognosis and these patients are among those who could benefit most from novel treatments.
November 30, 2016: Blood
https://www.readbyqxmd.com/read/27903291/erratum-to-high-expression-of-myocyte-enhancer-factor-2c-mef2c-is-associated-with-adverse-risk-features-and-poor-outcome-in-pediatric-acute-myeloid-leukemia-a-report-from-the-children-s-oncology-group
#12
George S Laszlo, Todd A Alonzo, Chelsea J Gudgeon, Kimberly H Harrington, Alex Kentsis, Robert B Gerbing, Yi-Cheng Wang, Rhonda E Ries, Susana C Raimondi, Betsy A Hirsch, Alan S Gamis, Soheil Meshinchi, Roland B Walter
No abstract text is available yet for this article.
November 30, 2016: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/27899802/genomic-and-transcriptional-landscape-of-p2ry8-crlf2-positive-childhood-acute-lymphoblastic-leukemia
#13
C Vesely, C Frech, C Eckert, G Cario, A Mecklenbräuker, U Zur Stadt, K Nebral, F Kraler, S Fischer, A Attarbaschi, M Schuster, C Bock, H Cavé, A von Stackelberg, M Schrappe, M A Horstmann, G Mann, O A Haas, R Panzer-Grümayer
Children with P2RY8-CRLF2-positive ALL have an increased relapse risk. Their mutational and transcriptional landscape as well as the respective patterns at relapse remains largely elusive. We therefore performed an integrated analysis of whole-exome and RNA-sequencing in 41 major clone fusion-positive cases including 19 matched diagnosis/relapse pairs. We detected a variety of frequently subclonal and highly instable JAK/STAT but also RTK/Ras pathway activating mutations in 76% of cases at diagnosis and virtually all relapses...
November 30, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/27895713/coexistence-of-iamp21-and-etv6-runx1-fusion-in-an-adolescent-with-b-cell-acute-lymphoblastic-leukemia-literature-review-of-six-additional-cases
#14
Jun Gu, Alexandra Reynolds, Lianghua Fang, Corrie DeGraffenreid, Kenneth Sterns, Keyur P Patel, L Jeffrey Medeiros, Pei Lin, Xinyan Lu
BACKGROUND: Intrachromosomal amplification of chromosome 21 (iAMP21) results from breakage-fusion-bridge cycles and chromothripsis is a distinct marker of a subgroup of B cell acute lymphoblastic leukemia (B-ALL) cases associated with a poor prognosis. iAMP21 accounts for 2% of pediatric B-ALL and occurs predominantly in older children or adolescents. ETV6-RUNX1 fusion, resulting from t(12;21)(p13;q22), is associated with an excellent outcome in younger children with B-ALL. Coexistence of iAMP21 with ETV6-RUNX1 fusion is extremely rare with limited clinical information available...
2016: Molecular Cytogenetics
https://www.readbyqxmd.com/read/27894077/tyrosine-kinase-fusion-genes-in-pediatric-bcr-abl1-like-acute-lymphoblastic-leukemia
#15
Judith M Boer, Elisabeth M P Steeghs, João R M Marchante, Aurélie Boeree, James J Beaudoin, H Berna Beverloo, Roland P Kuiper, Gabriele Escherich, Vincent H J van der Velden, C Ellen van der Schoot, Hester A de Groot-Kruseman, Rob Pieters, Monique L den Boer
Approximately 15% of pediatric B cell precursor acute lymphoblastic leukemia (BCP-ALL) is characterized by gene expression similar to that of BCR-ABL1-positive disease and unfavorable prognosis. This BCR-ABL1-like subtype shows a high frequency of B-cell development gene aberrations and tyrosine kinase-activating lesions. To evaluate the clinical significance of tyrosine kinase gene fusions in children with BCP-ALL, we studied the frequency of recently identified tyrosine kinase fusions, associated genetic features, and prognosis in a representative Dutch/German cohort...
November 22, 2016: Oncotarget
https://www.readbyqxmd.com/read/27891349/unusual-presentation-of-acute-leukaemia-a-tripod-of-cases
#16
Manjari Kishore, Vijay Kumar, Sadhna Marwah, Abhay S Nigam
Acute Leukemia is one of the common haematological malignancies encountered with varied clinical and haematological presentation. In acute leukaemia, complications like bleeding and infection cause significant morbidity and mortality, thus overshadowing the thromboembolic events. Among the various malignant haematological disorders, the association of thromboembolic events is often noted with acute promyelocytic leukemia, though the overall frequency of such events remains very low. Acute Lymphoblastic Leukemia (ALL) is, however, more common than Acute non-lymphoblastic Leukaemia...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27889691/development-of-a-culturally-competent-service-to-improve-academic-functioning-for-latino-survivors-of-acute-lymphoblastic-leukemia-methodological-considerations
#17
Laura Bava, Alexis Johns, David R Freyer, Kathleen Ruccione
Many survivors of childhood acute lymphoblastic leukemia (ALL) develop neurocognitive deficits that compromise academic functioning, especially in the presence of sociodemographic risk factors. The extent to which these risk factors coexist for Latino ALL survivors is not well described, but with shifts in U.S. demographics and improved survival in ALL, culturally competent interventions are needed. The Achieving Best Cognitive Successes after Cancer service was designed and implemented by a team representing nursing, medicine, psychology, and social work...
November 25, 2016: Journal of Pediatric Oncology Nursing: Official Journal of the Association of Pediatric Oncology Nurses
https://www.readbyqxmd.com/read/27886674/pri-mir-34b-c-rs4938723-polymorphism-is-associated-with-the-risk-of-childhood-acute-lymphoblastic-leukemia
#18
Mohammad Hashemi, Gholamreza Bahari, Majid Naderi, Simin Sadeghi-Bojd, Mohsen Taheri
MicroRNAs (miRNAs), small noncoding regulatory RNAs, are key regulators of gene expression. The impact of Pri-miR-34b/c rs4938723 variant on development of various cancers is still controversial. In the present study, we examined whether a rs4938723 variant located at the promoter region of Pri-miR-34b/c is associated with childhood ALL. A total of 110 children with acute lymphoblastic leukemia (ALL) and 120 healthy children were recruited to participate in this study. The rs4938723 variant was genotyped by polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) method...
November 2016: Cancer Genetics
https://www.readbyqxmd.com/read/27885548/health-related-quality-of-life-in-long-term-survivors-of-acute-lymphoblastic-leukemia-in-childhood-and-adolescence
#19
T Nayiager, L Anderson, A Cranston, U Athale, R D Barr
PURPOSE: Children with acute lymphoblastic leukemia (ALL), the commonest form of cancer in this age group, suffer considerable morbidity during treatment, with the majority returning to good health soon after therapy has been completed, as reflected in health-related quality of life (HRQL). However, survivors are at risk of many adverse health outcomes later, including obesity, measured by body mass index (BMI), that is compounded by limited physical activity. This study examined the HRQL of long-term survivors of ALL and its relationship to BMI and physical activity...
November 24, 2016: Quality of Life Research
https://www.readbyqxmd.com/read/27881370/discussing-and-managing-hematologic-germ-line-variants
#20
REVIEW
Wendy Kohlmann, Joshua D Schiffman
With the introduction of genomic technologies, more hereditary cancer syndromes with hematologic malignancies are being described. Up to 10% of hematologic malignancies in children and adults may be the result of an underlying inherited genetic risk. Managing these patients with hereditary hematologic malignancies, including familial leukemia, remains a clinical challenge because there is little information about these relatively rare disorders. This article covers some of the issues related to the diagnosis and interpretation of variants associated with hereditary hematologic malignancies, including the importance of an accurate family history in interpreting genetic variants associated with disease...
November 24, 2016: Blood
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