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British Journal of Haematology

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https://www.readbyqxmd.com/read/28419517/comparative-analysis-between-rq-pcr-and-digital-droplet-pcr-of-bcl2-igh-gene-rearrangement-in-the-peripheral-blood-and-bone-marrow-of-early-stage-follicular-lymphoma
#1
Marzia Cavalli, Lucia Anna De Novi, Irene Della Starza, Luca Vincenzo Cappelli, Vittorio Nunes, Alessandro Pulsoni, Ilaria Del Giudice, Anna Guarini, Robin Foà
BCL2/IGH rearrangements were analysed by polymerase chain reaction (PCR) at diagnosis in paired peripheral blood (PB) and bone marrow (BM) samples from 67 patients with stage I/II follicular lymphoma (FL). Real time quantitative PCR (RQ-PCR) and digital droplet PCR (ddPCR) were performed in cases with a major breakpoint region (MBR+) at diagnosis and after localized radiotherapy and rituximab administration in order to investigate the applicability of ddPCR. The overall ddPCR/RQ-PCR concordance was 81·9% (113/138 samples) and 97·5% in the 40/138 with quantifiable disease (RQ-PCR≥10(-5) )...
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419476/cortactin-a-lyn-substrate-is-a-checkpoint-molecule-at-the-intersection-of-bcr-and-cxcr4-signalling-pathway-in-chronic-lymphocytic-leukaemia-cells
#2
Veronica Martini, Cristina Gattazzo, Federica Frezzato, Valentina Trimarco, Marco Pizzi, Giorgia Chiodin, Filippo Severin, Edoardo Scomazzon, Vincenza Guzzardo, Deborah Saraggi, Flavia Raggi, Leonardo Martinello, Monica Facco, Andrea Visentin, Francesco Piazza, Anna Maria Brunati, Gianpietro Semenzato, Livio Trentin
Cortactin (CTTN) is a substrate of the Src kinase Lyn that is known to play an actin cytoskeletal regulatory role involved in cell migration and cancer progression following its phosphorylation at Y421. We recently demonstrated that Cortactin is overexpressed in patients with chronic lymphocytic leukaemia (CLL). This work was aimed at defining the functional role of Cortactin in these patients. We found that Cortactin is variably expressed in CLL patients both in the peripheral blood and lymph nodes and that its expression correlates with the release of matrix metalloproteinase 9 (MMP-9) and the motility of neoplastic cells...
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419466/the-2016-revised-world-health-organization-definition-of-myelodysplastic-syndrome-with-isolated-del-5q-prognostic-implications-of-single-versus-double-cytogenetic-abnormalities
#3
Mark Gurney, Mrinal M Patnaik, Curtis A Hanson, Mark R Litzow, Aref Al-Kali, Rhett P Ketterling, Ayalew Tefferi, Naseema Gangat
The definition of the myelodysplastic syndrome (MDS) subtype 'MDS with isolated del(5q)' was expanded to include cases with one additional non-chromosome 7 based cytogenetic abnormality in the 2016 revised World Health Organization classification. This study applied the revised definition to a large primary MDS cohort, and evaluated the prognostic impact of the additional cytogenetic abnormality. Seventy-two of 1067 patients (7%) met the 'MDS with isolated del(5q)' criteria, 11 (1%) of whom had an additional cytogenetic abnormality...
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419450/acquired-blue-sclerae-in-poems-syndrome
#4
Wasithep Limvorapitak, Diego Villa
No abstract text is available yet for this article.
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419449/pharmacogenetic-association-with-neurotoxicity-in-hispanic-children-with-acute-lymphoblastic-leukaemia
#5
LETTER
Claire A McClain, M Brooke Bernhardt, Amanda Berger, Juan C Bernini, Deborah Marquez-Do, Ryan Winslow, Michael E Scheurer, Eric S Schafer
No abstract text is available yet for this article.
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419441/detailed-immunophenotyping-of-b-cell-precursors-in-regenerating-bone-marrow-of-acute-lymphoblastic-leukaemia-patients-implications-for-minimal-residual-disease-detection
#6
Prisca M J Theunissen, Lukasz Sedek, Valerie De Haas, Tomasz Szczepanski, Alita Van Der Sluijs, Ester Mejstrikova, Michaela Nováková, Tomas Kalina, Quentin Lecrevisse, Alberto Orfao, Arjan C Lankester, Jacques J M van Dongen, Vincent H J Van Der Velden
Flow cytometric detection of minimal residual disease (MRD) in children with B-cell precursor acute lymphoblastic leukaemia (BCP-ALL) requires immunophenotypic discrimination between residual leukaemic cells and B-cell precursors (BCPs) which regenerate during therapy intervals. In this study, EuroFlow-based 8-colour flow cytometry and innovative analysis tools were used to first characterize the immunophenotypic maturation of normal BCPs in bone marrow (BM) from healthy children, resulting in a continuous multiparametric pathway including transition stages...
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419429/mutational-landscape-of-b-cell-post-transplant-lymphoproliferative-disorders
#7
Thomas Menter, Darius Juskevicius, Mary Alikian, Juerg Steiger, Stephan Dirnhofer, Alexandar Tzankov, Kikkeri N Naresh
It is currently unclear whether post-transplant diffuse large B-cell lymphomas (PT-DLBCL) display a similar genomic landscape as DLBCL in immunocompetent patients (IC-DLBCL). We investigated 50 post-transplant lymphoproliferative disorders (PTLDs) including 37 PT-DLBCL samples for somatic mutations frequently observed in IC-DLBCL. Targeted Next Generation Sequencing (NGS) using the Ion Torrent platform and a customized panel of 68 genes was performed on genomic DNA. Non-tumoural tissue was sequenced to exclude germline variants in cases where available...
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419428/platelets-much-more-than-bricks-in-a-breached-wall
#8
REVIEW
Maria Elisa Mancuso, Elena Santagostino
Platelets have various roles in vascular biology and homeostasis. They are the first actor in primary haemostasis and play important roles in thrombosis pathogenesis, but they are also part of innate immunity, which initiates and accelerate many inflammatory conditions. In some contexts, their immune functions are protective, while in others they contribute to adverse inflammatory outcomes. Platelets express numerous receptors and contain hundreds of secretory molecules that are crucial for platelet functional responses...
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419427/how-i-manage-children-with-neutropenia
#9
REVIEW
David C Dale
Neutropenia, usually defined as a blood neutrophil count <1·5 × 10(9) /l, is a common medical problem for children and adults. There are many causes for neutropenia, and at each stage in life the clinical pattern of causes and consequences differs significantly. I recommend utilizing the age of the child and clinical observations for the preliminary diagnosis and primary management. In premature infants, neutropenia is quite common and contributes to the risk of sepsis with necrotizing enterocolitis...
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419426/clinical-characteristics-prognosis-and-treatment-of-myelofibrosis-patients-with-severe-thrombocytopenia
#10
LETTER
Juan-Carlos Hernández-Boluda, Juan-Gonzalo Correa, Alberto Alvarez-Larrán, Francisca Ferrer-Marín, José-María Raya, Joaquín Martínez-López, Patricia Velez, Manuel Pérez-Encinas, Natalia Estrada, Valentín García-Gutiérrez, María-Laura Fox, Elisa Luño, Ana Kerguelen, Beatriz Cuevas, María-Antonia Durán, María-José Ramírez, Maite Gómez-Casares, María-Isabel Mata-Vázquez, Anabel Regadera, Arturo Pereira, Francisco Cervantes
No abstract text is available yet for this article.
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419424/single-centre-experience-of-the-management-of-superficial-vein-thrombosis-with-prophylactic-low-molecular-weight-heparin
#11
LETTER
Sofia Gouveia, Lara N Roberts, Julia Czuprynska, Raj K Patel, Roopen Arya
No abstract text is available yet for this article.
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419423/feeling-run-down-exercise-induced-pancytopenia
#12
Brandon M Huffman, Jeff Wiisanen, Min Shi, Ronald S Go
No abstract text is available yet for this article.
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419422/early-mortality-and-complications-in-hospitalized-adult-californians-with-acute-myeloid-leukaemia
#13
Gwendolyn Ho, Brian A Jonas, Qian Li, Ann Brunson, Ted Wun, Theresa H M Keegan
Few studies have evaluated the impact of complications, sociodemographic and clinical factors on early mortality (death ≤60 days from diagnosis) in acute myeloid leukaemia (AML) patients. Using data from the California Cancer Registry linked to hospital discharge records from 1999 to 2012, we identified patients aged ≥15 years with AML who received inpatient treatment (N = 6359). Multivariate logistic regression analyses were used to assess the association of complications with early mortality, adjusting for sociodemographic factors, comorbidities and hospital type...
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419421/upregulation-of-cd72-expression-on-cd19-cd27-memory-b%C3%A2-cells-by-cd40l-in-primary-immune-thrombocytopenia
#14
Mingen Lyu, Yating Hao, Yang Li, Cuicui Lyu, Wenjie Liu, Huiyuan Li, Feng Xue, Xiaofan Liu, Renchi Yang
CD72 is a co-receptor of B cells and regulates B cell activation. Although aberrant expression of CD72 has been reported in primary immune thrombocytopenia (ITP), it is uncertain whether this aberrant expression is restricted to specific B cell subsets. Furthermore, the mechanisms that regulate CD72 expression are unknown. In this study, we found higher frequency of CD19(+) B cells, CD19(+) CD27(+) memory B cells and lower frequency of CD19(+) CD27(-) naive B cells in active ITP patients compared with controls and patients in remission...
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419413/long-term-outcomes-secondary-malignancies-and-stem-cell-collection-following-bendamustine-in-patients-with-previously-treated-non-hodgkin-lymphoma
#15
Peter Martin, Zhengming Chen, Bruce D Cheson, Katherine S Robinson, Michael Williams, Saurabh A Rajguru, Jonathan W Friedberg, Richard H van der Jagt, Ann S LaCasce, Robin Joyce, Kristen N Ganjoo, Nancy L Bartlett, Bernard Lemieux, Ari VanderWalde, Jordan Herst, Jeffrey Szer, Michael H Bar, Fernando Cabanillas, Anthony J Dodds, Paul G Montgomery, Bryn Pressnail, Tricia Ellis, Mitchell R Smith, John P Leonard
Despite the long history of bendamustine as treatment for indolent non-Hodgkin lymphoma, long-term efficacy and toxicity data are minimal. We reviewed long-term data from three clinical trials to characterize the toxicity and efficacy of patients receiving bendamustine. Data were available for 149 subjects at 21 sites. The median age was 60 years at the start of bendamustine (range 39-84), and patients had received a median of 3 prior therapies. The histologies included grades 1-2 follicular lymphoma (FL; n = 73), grade 3 FL (n = 23), small lymphocytic lymphoma (n = 20), marginal zone lymphoma (n = 15), mantle cell lymphoma (n = 9), transformed lymphomas (n = 5), lymphoplasmacytic lymphoma (n = 2) and not reported (n = 2)...
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419412/eliminating-malignant-cells-from-cryopreserved-ovarian-tissue-is-possible-in-leukaemia-patients
#16
Michelle Soares, Pascale Saussoy, Mathilde Maskens, Hélène Reul, Christiani A Amorim, Jacques Donnez, Marie-Madeleine Dolmans
Reimplantation of cryopreserved ovarian tissue (OT) can successfully restore ovarian function in young cancer patients after gonadotoxic treatment. However, for patients with leukaemia, there is a risk of malignant cell transmission. Our objective was to evaluate minimal disseminated disease in OT from leukaemia patients and test a follicle isolation technique to obtain disease-free follicle suspensions. Cryopreserved OT from 12 leukaemia patients was thawed and analysed by histology and long-term xenografting in immunosuppressed mice...
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419408/iron-chelating-therapy-with-deferasirox-in-transfusion-dependent-higher-risk-myelodysplastic-syndromes-a-retrospective-multicentre-study
#17
Pellegrino Musto, Luca Maurillo, Vittorio Simeon, Antonella Poloni, Carlo Finelli, Enrico Balleari, Alessandra Ricco, Flavia Rivellini, Agostino Cortelezzi, Giuseppe Tarantini, Oreste Villani, Giovanna Mansueto, Maria R Milella, Daniele Scapicchio, Gioacchino Marziano, Massimo Breccia, Pasquale Niscola, Alessandro Sanna, Cristina Clissa, Maria T Voso, Susanna Fenu, Adriano Venditti, Valeria Santini, Emanuele Angelucci, Alessandro Levis
Iron chelation is controversial in higher risk myelodysplastic syndromes (HR-MDS), outside the allogeneic transplant setting. We conducted a retrospective, multicentre study in 51 patients with transfusion-dependent, intermediate-to-very high risk MDS, according to the revised international prognostic scoring system, treated with the oral iron chelating agent deferasirox (DFX). Thirty-six patients (71%) received azacitidine concomitantly. DFX was given at a median dose of 1000 mg/day (range 375-2500 mg) for a median of 11 months (range 0·4-75)...
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28419407/university-of-chicago-phase-ii-consortium-trial-of-selumetinib-meki-demonstrates-low-tolerability-and-efficacy-in-relapsed-dlbcl
#18
LETTER
Natalie Galanina, Sonali M Smith, Chuanhong Liao, Adam Petrich, Bernadette Libao, Ronald Gartenhaus, Jason R Westin, Kenneth S Cohen, James A Knost, Walter M Stadler, Austin Doyle, Theodore Karrison, Leo I Gordon, Andrew M Evens
No abstract text is available yet for this article.
April 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28402005/prevalence-and-risk-factors-for-red-blood-cell-alloimmunization-in-175-children-with-sickle-cell-disease-in-a-french-university-hospital-reference-centre
#19
Slimane Allali, Thierry Peyrard, Denise Amiranoff, Jérémie F Cohen, Martin Chalumeau, Valentine Brousse, Mariane de Montalembert
Patients with sickle cell disease (SCD) show a high prevalence of red blood cell (RBC) alloimmunization, but few studies have focused on children. We aimed to study the prevalence and risk factors of RBC alloimmunization in SCD children. We retrospectively analysed the medical and transfusion files for 245 SCD children hospitalized in our centre in 2014 and included 175 patients who had received at least one RBC unit in their lifetime. The main clinical and immuno-haematological characteristics of alloimmunized and non-alloimmunized patients were compared...
April 12, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28397964/anaemia-iron-deficiency-and-susceptibility-to-infection-in-children-in-sub-saharan-africa-guideline-dilemmas
#20
REVIEW
Femkje A M Jonker, Elodie Te Poel, Imelda Bates, Michael Boele van Hensbroek
Globally, anaemia, iron deficiency and infections are responsible for a majority of the morbidity and mortality that occurs among children. As iron is essential for erythropoiesis and the human immune system, as well as a crucial element for many pathogens, these three conditions often interact. This article considers the question - have the studies conducted so far unravelled the potential complex interaction between these factors sufficiently enough to be able to develop universally applicable guidelines about iron treatment in children? It is possible, however, that the area is too complex and diverse, with many sub-populations, and that not universal, but tailor-made guidelines are needed based on some agreed principles...
April 11, 2017: British Journal of Haematology
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