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https://www.readbyqxmd.com/read/29225825/brain-biopsy-in-the-diagnosis-of-leptomeningeal-involvement-in-stage-i-chronic-lymphocytic-leukemia
#1
Eva Cervilla Muñoz, Pablo Demelo Rodríguez, Alejandra García García, Javier Menarguez Palanca, Jorge Del Toro Cervera
Leptomeningeal involvement of CLL is usually underdiagnosed as neurological symptoms are unspecific. It is important to carefully evaluate neurological status in these patients and consider this entity between the differential diagnosis of a neurological deterioration as adequate treatment improves the prognosis. Imaging techniques, analyses of cerebrospinal fluid, and brain biopsy are useful to establish a definitive diagnosis.
December 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/29222275/the-mutational-landscape-of-chronic-lymphocytic-leukemia-and-its-impact-on-prognosis-and-treatment
#2
REVIEW
Gianluca Gaidano, Davide Rossi
The typical genome of chronic lymphocytic leukemia (CLL) carries ∼2000 molecular lesions. Few mutations recur across patients at a frequency >5%, whereas a large number of biologically and clinically uncharacterized genes are mutated at lower frequency. Approximately 80% of CLL patients carry at least 1 of 4 common chromosomal alterations, namely deletion 13q14, deletion 11q22-23, deletion 17p12, and trisomy 12. Knowledge of the CLL genome has translated into the availability of molecular biomarkers for prognosis and treatment prediction...
December 8, 2017: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/29209431/combining-cytogenetic-and-epigenetic-approaches-in-chronic-lymphocytic-leukemia-improves-prognosis-prediction-for-patients-with-isolated-13q-deletion
#3
Cristina Bagacean, Christelle Le Dantec, Christian Berthou, Adrian Tempescul, Hussam Saad, Anne Bordron, Mihnea Zdrenghea, Victor Cristea, Nathalie Douet-Guilbert, Yves Renaudineau
Background: Both defective DNA methylation and active DNA demethylation processes are emerging as important risk factors in chronic lymphocytic leukemia (CLL). However, associations between 5-cytosine epigenetic markers and the most frequent chromosomal abnormalities detected in CLL remain to be established. Methods: CLL patients were retrospectively classified into a cytogenetic low-risk group (isolated 13q deletion), an intermediate-risk group (normal karyotype or trisomy 12), and a high-risk group (11q deletion, 17p deletion, or complex karyotype [≥ 3 breakpoints])...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29206143/lipoprotein-lipase-expression-in-chronic-lymphocytic-leukemia-new-insights-into-leukemic-progression
#4
REVIEW
Daniel Prieto, Pablo Oppezzo
Lipoprotein lipase (LPL) is a central enzyme in lipid metabolism. Due to its catalytic activity, LPL is involved in metabolic pathways exploited by various solid and hematologic malignancies to provide an extra energy source to the tumor cell. We and others described a link between the expression of LPL in the tumor cell and a poor clinical outcome of patients suffering Chronic Lymphocytic Leukemia (CLL). This leukemia is characterized by a slow accumulation of mainly quiescent clonal CD5 positive B cells that infiltrates secondary lymphoid organs, bone marrow and peripheral blood...
December 5, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29196709/lck-is-a-relevant-target-in-chronic-lymphocytic-leukaemia-cells-whose-expression-variance-is-unrelated-to-disease-outcome
#5
Kathleen J Till, John C Allen, Fatima Talab, Ke Lin, David Allsup, Lynn Cawkwell, Alison Bentley, Ingo Ringshausen, Andrew D Duckworth, Andrew R Pettitt, Nagesh Kalakonda, Joseph R Slupsky
Pathogenesis of chronic lymphocytic leukaemia (CLL) is contingent upon antigen receptor (BCR) expressed by malignant cells of this disease. Studies on somatic hypermutation of the antigen binding region, receptor expression levels and signal capacity have all linked BCR on CLL cells to disease prognosis. Our previous work showed that the src-family kinase Lck is a targetable mediator of BCR signalling in CLL cells, and that variance in Lck expression associated with ability of BCR to induce signal upon engagement...
December 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29194741/-double-hit-chronic-lymphocytic-leukemia-an-aggressive-subgroup-with-17p-deletion-and-8q24-gain
#6
Elise Chapiro, Claude Lesty, Clémentine Gabillaud, Eric Durot, Simon Bouzy, Marine Armand, Magali Le Garff-Tavernier, Nadia Bougacha, Stéphanie Struski, Audrey Bidet, Elodie Laharanne, Carole Barin, Lauren Veronese, Nolwen Prié, Virginie Eclache, Baptiste Gaillard, Lucienne Michaux, Christine Lefebvre, Jean-Baptiste Gaillard, Christine Terré, Dominique Penther, Christian Bastard, Nathalie Nadal, Sandra Fert-Ferrer, Nathalie Auger, Catherine Godon, Laurent Sutton, Olivier Tournilhac, Santos A Susin, Florence Nguyen-Khac
Chronic lymphocytic leukemia (CLL) with 17p deletion (17p-) is associated with a lack of response to standard treatment and thus the worst possible clinical outcome. Various chromosomal abnormalities (including unbalanced translocations, deletions, ring chromosomes and isochromosomes) result in the loss of 17p and one copy of the TP53 gene. The objective of the present study was to determine whether the type of chromosomal abnormality leading to 17p- and the additional aberrations influenced the prognosis in a series of 195 patients with 17p-CLL...
December 1, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/29193006/a-single-institution-retrospective-cohort-study-of-first-line-r-epoch-chemoimmunotherapy-for-richter-syndrome-demonstrating-complex-chronic-lymphocytic-leukaemia-karyotype-as-an-adverse-prognostic-factor
#7
Kerry A Rogers, Ying Huang, Amy S Ruppert, Galena Salem, Deborah M Stephens, Nyla A Heerema, Leslie A Andritsos, Farrukh T Awan, John C Byrd, Joseph M Flynn, Kami J Maddocks, Jeffrey A Jones
Richter Syndrome, an aggressive lymphoma occurring in patients with chronic lymphocytic leukaemia (CLL), has a generally poor prognosis and anthracycline-based chemoimmunotherapy regimens designed to treat de novo diffuse large B-cell lymphoma achieve modest clinical benefit. R-EPOCH (rituximab, etoposide, prednisone, vincristine, cyclophosphamide, doxorubicin) has demonstrated greater activity against aggressive B-cell histologies but has not been studied in Richter Syndrome. We conducted a retrospective cohort study of 46 Richter Syndrome patients treated with first-line R-EPOCH at our institution between 1 January 2006 and 31 May 2014...
November 28, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/29155042/imaging-flow-cytometry-to-assess-chromosomal-abnormalities-in-chronic-lymphocytic-leukaemia
#8
Henry Hui, Kathryn A Fuller, Hun Chuah, James Liang, Hasib Sidiqi, Dejan Radeski, Wendy N Erber
Chronic Lymphocytic Leukaemia (CLL), the most common leukaemia in the Western world, has a characteristic phenotype and prognosis largely defined by the presence of cytogenetic aberrations. The gold standard for detecting these cytogenetic abnormalities is interphase fluorescence in situ hybridisation (FISH) performed on cell smears or tissue sections on glass slides. Fluorescently labelled DNA probes bind to specific chromosomal regions and the signal detected by fluorescent microscopy. Generally only 200 cells are assessed and the limit of sensitivity is 3% positive cells...
November 15, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/29129824/impact-of-fish-aberrations-and-cllu1-expression-on-the-prognosis-of-chronic-lymphocytic-leukemia-presentation-of-156-patients-from-turkey
#9
Ümmet Abur, Gönül Oğur, Ömer Salih Akar, Engin Altundağ, Huri Sema Aymelek, Düzgün Özatlı, Mehmet Turgut
OBJECTIVE: This study evaluates the impact of the CLLU1 expression and FISH analysis of a group of Turkish CLL patients. MATERIALS AND METHODS: Totally, 156 CLL patients were analysed by FISH method;47 of them were also evaluated for CLLU1 expression. Results were correlated with clinical parameters. RESULTS: FISH aberrations were found in 62% of patients. These aberrations were del13q14 (67%), trisomy 12 (27%), del11q22 (19%), del17p (8%) and 14q32 rearrangements (20%)...
November 13, 2017: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/29081197/-clinical-features-and-prognosis-of-17-patients-with-primary-cold-agglutinin-disease
#10
Y Y Wu, X X Cao, H Cai, L Zhang, D B Zhou, J Li
Objective: To explore the clinical characteristics, treatment and prognosis in 17 patients with primary cold agglutinin disease (CAD) . Methods: Clinical data, treatment and survival status of 17 patients diagnosed with primary cold agglutinin disease in Peking Union Medical College Hospital during April 2007 to October 2016 were retrospectively analyzed. The MYD88(L265P) mutation was tested in 4 patients. Results: The median age of 17 patients was 67 years (range, 51-86 years) , and male- to female ratio was 1...
September 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/29075057/evaluation-of-interleukin-9-expression-as-a-potential-therapeutic-target-in-chronic-lymphocytic-leukemia-in-a-cohort-of-egyptian-patients
#11
Hadeer A Abbassy, Reham A Aboelwafa, Omar M Ghallab
Chronic lymphocytic leukemia (CLL) is a common lymphoid malignancy that has a highly variable clinical course. Genomic features as zeta-chain-associated protein kinase 70 (ZAP70) expression and CD38 expression provide further differentiation of disease prognosis. Extensive studies have confirmed the oncogenic activities of IL-9 in lymphoma. The aim of the current study was to investigate the contribution of IL-9 expression to the pathogenesis of CLL and its correlation to other prognostic parameters. This study was conducted on 80 patients at diagnosis with CLL and 80 healthy controls...
December 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/29050251/sf3b1-mutation-is-a-prognostic-factor-in-chronic-lymphocytic-leukemia-a-meta-analysis
#12
Zhenghao Zhang, Shu Chen, Shuang Chen, Gang Chen, Rui Zhang, Jinhua Li, Jianhua Qu
Recent studies suggest that SF3B1 might be related to poor prognosis in CLL, but the results remain controversial. This meta-analysis was performed to clarify the relationship between SF3B1 mutation and prognosis in patients with CLL. The relevant published reports were searched in PubMed, EMBASE, and Web of Science. A total of 13 articles were included in this meta-analysis as they met the inclusion and exclusion criteria. The hazard ratios (HRs) and corresponding 95% confidence intervals (95%CIs) for progression free survival (PFS) and/or overall survival (OS) were extracted from each eligible study...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29039602/lncrna-miat-regulates-cell-biological-behaviors-in-gastric-cancer-through-a-mechanism-involving-the-mir-29a-3p-hdac4-axis
#13
Yanfeng Li, Kuan Wang, Yuzhe Wei, Qiang Yao, Qifan Zhang, Hongyan Qu, Guanyu Zhu
Gastric cancer (GC) is one of the most common malignant diseases worldwide. Although significant progress has been made in the early detection and treatment of GC over the past decades, the prognosis is still not satisfactory and the underlying mechanisms of carcinogenesis remain unknown. Long non-coding RNA MIAT has been established as a key player in the regulation of various biological and pathological processes including chronic lymphocytic leukemias, acute myocardial infarction and neuroendocrine prostate cancer...
October 10, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28994094/novel-prognostic-molecular-factors-a-quantum-leap-in-the-field-of-chronic-lymphocytic-leukemia
#14
Ewelina Zakrzewska, Marta Pirog, Joanna Purkot, Krzysztof Giannopoulos
Cytogenetic lesions do not completely explain clinical heterogeneity of chronic lymphocytic leukemia (CLL). The 2016 revision of the World Health Organization classification 2008 introduced that molecular lesions of TP53, NOTCH1, SF3B1 and BIRC3 have potential clinical relevance and could be integrated into an updated risk profile. The negative clinical implications of TP53 disruptions are well constituted and patients with these mutations should be considered for novel, small molecule signal transduction inhibitors therapies...
October 10, 2017: Folia Histochemica et Cytobiologica
https://www.readbyqxmd.com/read/28982149/the-interplay-of-cd150-and-cd180-receptor-pathways-contribute-to-the-pathobiology-of-chronic-lymphocytic-leukemia-b-cells-by-selective-inhibition-of-akt-and-mapk-signaling
#15
Inna Gordiienko, Larysa Shlapatska, Valeriia Kholodniuk, Lilia Sklyarenko, Daniel F Gluzman, Edward A Clark, Svetlana P Sidorenko
Cell surface expression of CD150 and CD180 receptors in chronic lymphocytic leukemia (CLL) associates with mutational IGHV status and favourable prognosis. Here we show a direct correlation between cell surface expression and colocalization of these receptors on CLL B cells. In the absence of CD150 and CD180 on the cell surface both receptors were expressed in the cytoplasm. The CD150 receptor was colocalized with markers of the endoplasmic reticulum, the Golgi apparatus and early endosomes. In contrast, CD180 was detected preferentially in early endosomes...
2017: PloS One
https://www.readbyqxmd.com/read/28935990/notch1-mutations-are-associated-with-high-cd49d-expression-in-chronic-lymphocytic-leukemia-link-between-the-notch1-and-the-nf-%C3%AE%C2%BAb-pathways
#16
D Benedetti, E Tissino, F Pozzo, T Bittolo, C Caldana, C Perini, D Martorelli, V Bravin, T D'Agaro, F M Rossi, R Bomben, E Santinelli, F Zaja, G Pozzato, A Chiarenza, F Di Raimondo, G Del Poeta, D Rossi, G Gaidano, M Dal Bo, V Gattei, A Zucchetto
In chronic lymphocytic leukemia (CLL), stabilizing mutations of NOTCH1, affecting up to 10-15% of cases, have been associated to poor prognosis, disease progression and refractoriness to chemotherapy. NOTCH1 mutations are significantly overrepresented in trisomy 12 CLL, a disease subset frequently expressing CD49d, the α4 chain of the very-late-activation-4 integrin, a well-known key regulator of microenviromental interactions, and negative prognosticator in CLL. In the present study, by analysing a wide cohort of 1180 CLL, we observed a very strong association between the presence of NOTCH1 mutations and the expression of CD49d (P<0...
September 22, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28916311/lenalidomide-maintenance-after-first-line-therapy-for-high-risk-chronic-lymphocytic-leukaemia-cllm1-final-results-from-a-randomised-double-blind-phase-3-study
#17
Anna Maria Fink, Jasmin Bahlo, Sandra Robrecht, Othman Al-Sawaf, Ali Aldaoud, Holger Hebart, Kathleen Jentsch-Ullrich, Steffen Dörfel, Kirsten Fischer, Clemens-Martin Wendtner, Thomas Nösslinger, Paolo Ghia, Francesc Bosch, Arnon P Kater, Hartmut Döhner, Michael Kneba, Karl-Anton Kreuzer, Eugen Tausch, Stephan Stilgenbauer, Matthias Ritgen, Sebastian Böttcher, Barbara Eichhorst, Michael Hallek
BACKGROUND: The combined use of genetic markers and detectable minimal residual disease identifies patients with chronic lymphocytic leukaemia with poor outcome after first-line chemoimmunotherapy. We aimed to assess lenalidomide maintenance therapy in these high-risk patients. METHODS: In this randomised, double-blind, phase 3 study (CLLM1; CLL Maintenance 1 of the German CLL Study Group), patients older than 18 years and diagnosed with immunophenotypically confirmed chronic lymphocytic leukaemia with active disease, who responded to chemoimmunotherapy 2-5 months after completion of first-line therapy and who were assessed as having a high risk for an early progression with at least a partial response after four or more cycles of first-line chemoimmunotherapy, were eligible if they had high minimal residual disease levels or intermediate levels combined with an unmutated IGHV gene status or TP53 alterations...
October 2017: Lancet Haematology
https://www.readbyqxmd.com/read/28905668/the-impact-of-agent-orange-exposure-on-prognosis-and-management-in-patients-with-chronic-lymphocytic-leukemia-a-national-veteran-affairs-tumor-registry-study
#18
Craig Mescher, David Gilbertson, Nicole M Randall, Gobind Tarchand, Julie Tomaska, Lisa Baumann Kreuziger, Vicki A Morrison
Exposure to Agent Orange (AO) has been associated with the development of chronic lymphocytic leukemia (CLL). We performed a retrospective study of 2052 Vietnam veterans identified in the National VA Tumor Registry to assess the impact of AO exposure on CLL prognosis, treatment and survival. Prognostic factors did not differ based on exposure. Veterans exposed to AO were diagnosed younger (63.2 vs. 70.5 years, p < .0001) and had longer overall survival (median not reached vs. 91 months, p < .001)...
September 14, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28871936/xanthoma-like-skin-changes-in-an-elderly-woman-with-a-normal-lipid-profile
#19
Piotr Nockowski, Zdzisław Woźniak, Adam Reich, Joanna Maj
Dear Editor, An 83-year-old woman developed yellow-brownish infiltrates, nodules, and tumors mimicking xanthomas, mostly involving the periorbital and chest area within three months (Figure 1). She had no abnormalities in serum cholesterol or triglycerides levels. A detailed laboratory analysis revealed the presence of mild monoclonal gammopathy with a presence of immunoglobulin G (IgG) kappa light chains; however, according to hematologist consultation, it did not require medical intervention. Imaging assessment and ultrasound examination did not show any specific involvement of internal organs...
July 2017: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/28833505/aberrant-levels-of-suv39h1-and-suv39h2-methyltransferase-are-associated-with-genomic-instability-in-chronic-lymphocytic-leukemia
#20
Juliana Carvalho Alves-Silva, Doralina do Amaral Rabello, Martha Oliveira Bravo, Antônio Lucena-Araujo, Diego Madureira de Oliveira, Fábio Morato de Oliveira, Eduardo Magalhaes Rego, Fábio Pittella-Silva, Felipe Saldanha-Araujo
Chromosomal alterations are commonly detected in patients with chronic lymphocytic leukemia (CLL) and impact disease pathogenesis, prognosis, and progression. Telomerase expression (hTERT), its activity and the telomere length are other important predictors of survival and multiple outcomes in CLL. SUV39H and SUV420H enzymes are histone methyltransferases (HMTases) involved in several cellular processes, including regulation of telomere length, heterochromatin organization, and genome stability. Here, we investigated whether SUV39H1, SUV39H2, SUV420H1, SUV420H2, and hTERT are associated with genomic instability of CLL...
August 19, 2017: Environmental and Molecular Mutagenesis
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