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Large B cell lymphoma

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https://www.readbyqxmd.com/read/29340126/hepatosplenic-gamma-delta-t-cell-lymphoma-hsgdtcl-two-rare-case-reports-from-western-india
#1
Irappa Madabhavi, Gaurang Modi, Harsha Panchal, Apurva Patel, Swaroop Revannasiddaiah, Asha Anand, Sonia Parikh, Kshitij Joshi, Malay Sarkar
Peripheral T cell lymphomas are a heterogeneous group of post-thymic, mature lymphoid malignancies, accounting for approximately 10-15% of all non-Hodgkin's lymphomas. Hepatosplenic T-cell lymphoma (HSGDTCL) is a rare entity, which is characterized by primary extra nodal disease with typical sinusoidal or sinusal infiltration of the liver and the spleen, respectively by expression of the T-cell receptor γδ chain, and by a number of other frequent clinicopathologic features, including aggressive course of disease...
October 1, 2017: International Journal of Hematology-oncology and Stem Cell Research
https://www.readbyqxmd.com/read/29340082/reciprocal-sensitivity-of-diffuse-large-b-cell-lymphoma-cells-to-bcl-2-inhibitors-bird-2-versus-venetoclax
#2
Tamara Vervloessem, Haidar Akl, Thomas Tousseyn, Humbert De Smedt, Jan B Parys, Geert Bultynck
Bcl-2 is often upregulated in cancers to neutralize the BH3-only protein Bim at the mitochondria. BH3 mimetics (e.g. ABT-199 (venetoclax)) kill cancer cells by targeting Bcl-2's hydrophobic cleft and disrupting Bcl-2/Bim complexes. Some cancers with elevated Bcl-2 display poor responses towards BH3 mimetics, suggesting an additional function for anti-apoptotic Bcl-2 in these cancers. Indeed, Bcl-2 via its BH4 domain prevents cytotoxic Ca2+ release from the endoplasmic reticulum (ER) by directly inhibiting the inositol 1,4,5-trisphosphate receptor (IP3R)...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29338665/adjuvant-radiotherapy-in-patients-with-diffuse-large-b-cell-lymphoma-in-advanced-stage-iii-iv-improves-the-outcome-in-the-rituximab-era
#3
Agustin Avilès, Maria-Jesus Nambo, Angel Calva, Natividad Neri, Sergio Cleto, Luis Silva
OBJECTIVES: To assess the efficacy and toxicity of adjuvant radiotherapy (RT) in patients with diffuse large B-cell lymphoma (DLBCL) and nodal bulky disease, on complete response, after six cycles of RCHOP (rituximab, cyclophosphamide, doxorubicin, vincristine and prednisone), we began an open-label clinical trial in a large cohort with longer follow-up to evaluate the outcome measured from progression-free survival (PFS) and overall survival (OS). PATIENTS AND METHODS: Between 2006 and 2010, 258 consecutive patients with DLBCL and nodal bulky disease (tumor mass >10 cm) were randomly assigned to receive either RT (involved field, 30 Gy) (127 patients) or no (control group) (131 patients)...
January 17, 2018: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/29337376/crispr-cas9-mediated-genome-editing-in-epstein-barr-virus-transformed-lymphoblastoid-b-cell-lines
#4
Sizun Jiang, Liang Wei Wang, Michael J Walsh, Stephen J Trudeau, Catherine Gerdt, Bo Zhao, Benjamin E Gewurz
Epstein-Barr virus (EBV) efficiently transforms primary human B cells into immortalized lymphoblastoid cell lines (LCLs), which are extensively used in human genetic, immunological and virological studies. LCLs provide unlimited sources of DNA for genetic investigation, but can be difficult to manipulate, for instance because low retroviral or lentiviral transduction frequencies hinder experiments that require co-expression of multiple components. This unit details Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/Cas9 engineering for robust LCL genome editing...
January 16, 2018: Current Protocols in Molecular Biology
https://www.readbyqxmd.com/read/29337296/computer-analysis-of-histopathological-images-for-tumor-grading
#5
Wlodzimierz Klonowski, Anna Korzynska, Ryszard Gomolka
We developed a new method that enables automatic and rapid assessment of a tumor's proliferative index from immunohistochemically (IHC) stained microscopic images. This method is simple, rapid, and does not require the time consuming manual step of selecting areas of interest or the need for computationally complicated detection of hot-spots, both of which attempt to emulate a pathologist's way of estimating a proliferation index. We apply our method to a set of diffuse large B-cell lymphoma (DLBCL) slide images...
January 16, 2018: Physiological Measurement
https://www.readbyqxmd.com/read/29337112/molecular-heterogeneity-in-diffuse-large-b-cell-lymphoma-and-its-implications-in-clinical-diagnosis-and-treatment
#6
REVIEW
Lingchuan Guo, Pei Lin, Hui Xiong, Shichun Tu, Gang Chen
Over half of patients with diffuse large B-cell lymphoma (DLBCL) can be cured by standard R-CHOP treatment (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone). However, the remaining patients are refractory and ultimately succumb to progressive or relapsed disease. During the past decade, there has been significant progress in the understanding of molecular mechanisms in DLBCL, largely owing to collaborative efforts in large-scale gene expression profiling and deep sequencing, which have identified genetic alterations critical in lymphomagenesis through activation of key signaling transduction pathways in DLBCL...
January 11, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29336777/presence-of-apoptosis-distinguishes-primary-central-nervous-system-lymphoma-from-glioblastoma-during-intraoperative-consultation
#7
Yoon Jin Cha, Junjeong Choi, Se Hoon Kim
AIM: To evaluate the overlapping and distinguishing cytologic features of primary central nervous system lymphoma (PCNSL), diffuse large B-cell lymphoma, and glioblastoma (GM) in frozen sections and squash smear slides. MATERIALS AND METHODS: Intraoperative frozen sections and squash smear slides from PCNSL (N = 63) and GM (N = 122) patients diagnosed from 2005 to 2015 were retrieved from pathology records. Overlapping and distinguishing histologic features were examined and statistically analyzed...
January 16, 2018: Clinical Neuropathology
https://www.readbyqxmd.com/read/29335928/ct-imaging-of-primary-pancreatic-lymphoma-experience-from-three-referral-centres-for-pancreatic-diseases
#8
Enrico Boninsegna, Giulia A Zamboni, Davide Facchinelli, Charikleia Triantopoulou, Sofia Gourtsoyianni, Maria Chiara Ambrosetti, Dino Veneri, Achille Ambrosetti, Roberto Pozzi Mucelli
PURPOSE: To describe CT characteristics of primary pancreatic lymphoma (PPL), a rare disease with features in common with adenocarcinoma. MATERIALS AND METHODS: Fourteen patients were enrolled. CT: unenhanced scan, contrast-enhanced pancreatic and venous phases. Image analysis: tumour location; peri-pancreatic vessel encasement; necrosis; enlarged lymph nodes; fat stranding; enlarged bile duct and pancreatic duct; neoplasm longest dimension, volume and density. RESULTS: Histopathological diagnoses: follicular non-Hodgkin lymphoma (5/14), diffuse large B-cell lymphoma (6/14) and high-grade B-cell lymphoma not otherwise specified (3/14)...
January 15, 2018: Insights Into Imaging
https://www.readbyqxmd.com/read/29335581/role-of-hypoxia-in-diffuse-large-b-cell-lymphoma-metabolic-repression-and-selective-translation-of-hk2-facilitates-development-of-dlbcl
#9
Kavita Bhalla, Sausan Jaber, Nanaji Nahid M, Karen Underwood, Afshin Beheshti, Ari Landon, Binny Bhandary, Paul Bastain, Andrew M Evens, John Haley, Brian Polster, Ronald B Gartenhaus
Published molecular profiling studies in patients with lymphoma suggested the influence of hypoxia inducible factor-1 alpha (HIF1α) targets in prognosis of DLBCL. Yet, the role of hypoxia in hematological malignancies remains unclear. We observed that activation of HIF1α resulted in global translation repression during hypoxic stress in DLBCL. Protein translation efficiency as measured using 35S-labeled methionine incorporation revealed a ≥50% reduction in translation upon activation of HIF1α. Importantly, translation was not completely inhibited and expression of clinically correlated hypoxia targets such as GLUT1, HK2, and CYT-C was found to be refractory to translational repression under hypoxia in DLBCL cells...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29335468/aicda-drives-epigenetic-heterogeneity-and-accelerates-germinal-center-derived-lymphomagenesis
#10
Matt Teater, Pilar M Dominguez, David Redmond, Zhengming Chen, Daisuke Ennishi, David W Scott, Luisa Cimmino, Paola Ghione, Jayanta Chaudhuri, Randy D Gascoyne, Iannis Aifantis, Giorgio Inghirami, Olivier Elemento, Ari Melnick, Rita Shaknovich
Epigenetic heterogeneity is emerging as a feature of tumors. In diffuse large B-cell lymphoma (DLBCL), increased cytosine methylation heterogeneity is associated with poor clinical outcome, yet the underlying mechanisms remain unclear. Activation-induced cytidine deaminase (AICDA), an enzyme that mediates affinity maturation and facilitates DNA demethylation in germinal center (GC) B cells, is required for DLBCL pathogenesis and linked to inferior outcome. Here we show that AICDA overexpression causes more aggressive disease in BCL2-driven murine lymphomas...
January 15, 2018: Nature Communications
https://www.readbyqxmd.com/read/29333888/primary-diffuse-large-b-cell-lymphoma-of-the-ciliary-body
#11
Hayyam Kiratli, Abdullah Ağın, Berrin Büyükeren, Figen Söylemezoğlu
PURPOSE: To report an unusual case of an eye with primary ciliary body lymphoma which came to enucleation allowing detailed histopathological examination. METHODS: A 50-year-old man presented with a painful loss of vision in the left eye. The clinical, imaging, and immunohistopathological features of this case were reviewed. RESULTS: The vision in the left eye was light perception. There were keratic precipitates, an irregular and thickened iris with neovascularization...
January 15, 2018: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/29333405/primary-central-nervous-system-lymphoma-a-new-prognostic-model-for-patients-with-diffuse-large-b-cell-histology
#12
Yongchel Ahn, Heui June Ahn, Dok Hyun Yoon, Jung Yong Hong, Changhoon Yoo, Shin Kim, Jooryung Huh, Cheolwon Suh
Background: Age and performance status are important prognostic factors in primary central nervous system (CNS) lymphoma. Although several prognostic models have been proposed, there is no consensus on the optimal model for patients with diffuse large B-cell histology. Methods: Seventy-seven patients with primary CNS diffuse large B-cell lymphoma were retrospectively analyzed to determine factors affecting survival. Three Western models were applied to our eligible patients; we devised a novel model based on our findings...
December 2017: Blood Research
https://www.readbyqxmd.com/read/29333404/relevance-of-prognostic-index-with-%C3%AE-2-microglobulin-for-patients-with-diffuse-large-b-cell-lymphoma-in-the-rituximab-era
#13
Jihoon Kang, Shinkyo Yoon, Cheolwon Suh
Background: The International Prognostic Index (IPI) has been a useful tool for predicting the prognosis of aggressive non-Hodgkin lymphoma in the last 20 years. Herein, we aimed to develop a new prognostic model for diffuse large B-cell lymphoma (DLBCL) in the rituximab era. Methods: Between March 2004 and June 2012, patients with DLBCL treated with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone chemotherapy regimen were identified in the database of the Asan Medical Center (AMC) Lymphoma Registry...
December 2017: Blood Research
https://www.readbyqxmd.com/read/29333398/myelodysplastic-syndrome-with-occult-diffuse-large-b-cell-lymphoma
#14
Ja Young Lee, Hwa Jin Cho
No abstract text is available yet for this article.
December 2017: Blood Research
https://www.readbyqxmd.com/read/29333016/clinicopathological-features-and-outcomes-in-primary-central-nervous-system-lymphoma-a-10-year-experience
#15
Chaitanya Krishna Puligundla, Stalin Bala, Ashok Kumar Karnam, Sadashivudu Gundeti, Tara Roshni Paul, Megha S Uppin, Lakshmi Srinivas Maddali
Context: Primary central nervous system lymphoma (PCNSL) is a variant of extranodal lymphoma, accounting for 4% of primary central nervous system tumors. PCNSL was more common in immunocompetent individuals. International Extranodal Lymphoma Study Group (IELSG) scoring was used for prognostication. High-dose methotrexate regimens along with radiotherapy improved outcomes in PCNSL. Aims: The aim of this study is to analyze the clinical and pathological features, progression-free survival (PFS), and overall survival (OS) in patients with PCNSL...
October 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/29327909/more-on-anti-cd19-car-t-cells-in-cns-diffuse-large-b-cell-lymphoma
#16
Jeremy S Abramson, Yi-Bin Chen
No abstract text is available yet for this article.
November 23, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/29327908/more-on-anti-cd19-car-t-cells-in-cns-diffuse-large-b-cell-lymphoma
#17
Pierre Tiberghien, Eric Deconinck, Oliver Adotevi
No abstract text is available yet for this article.
November 23, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/29325396/treatment-results-of-radiotherapy-following-chop-or-r-chop-in-limited-stage-head-and-neck-diffuse-large-b-cell-lymphoma-a-single-institutional-experience
#18
Jae-Uk Jeong, Woong-Ki Chung, Taek-Keun Nam, Deok-Hwan Yang, Sung-Ja Ahn, Ju-Young Song, Mee Sun Yoon, Yong-Hyeob Kim
PURPOSE: This study evaluated outcomes of radiotherapy (RT) after chemotherapy in limited-stage head-and-neck diffuse large B-cell lymphoma (DLBCL). MATERIALS AND METHODS: Eighty patients who were treated for limited-stage head-and-neck DLBCL with CHOP (n = 43) or R-CHOP (n = 37), were analyzed. After chemotherapy, RT was administered to the extended field (n = 60) or the involved field (n = 16), or the involved site (n = 4). The median dose of RT ranged from 36 Gy in case of those with a complete response, to 45-60 Gy in those with a partial response...
December 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29325248/-survival-of-patients-with-primary-central-nervous-system-diffuse-large-b-cell-lymphoma-impact-of-gene-aberrations-and-protein-overexpression-of-bcl-2-and-c-myc-and-selection-of-chemotherapy-regimens
#19
W J Yin, X Zhu, H Y Yang, W Y Sun, M J Wu
Objective: To investigate the impact of clinicopathological features, gene rearrangements and protein expression of bcl-6, bcl-2, C-MYC and chemotherapy regime on the prognosis of patients with primary central nervous system diffuse large B-cell lymphoma (PCNS-DLBCL). Methods: Thirty-three cases of PCNS-DLBCL diagnosed from January 2006 to December 2016 at Zhejiang Cancer Hospital were collected. The expression of CD10, bcl-6, bcl-2, MUM1 and MYC were detected by immunohistochemical staining (IHC). The presence of EB virus was detected by in situ hybridization(EBER)...
January 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29325247/-impact-of-prdm1-gene-inactivation-on-c-myc-regulation-in-diffuse-large-b-cell-lymphoma
#20
X Y Zhang, Z P Ma, W L Cui, X L Pang, R Chen, L Wang, W Zhang, X X Li
Objective: To investigate the role of PRDM1 gene inactivaion in the regulation of C-MYC in diffuse large B-cell lymphoma (DLBCL), and to explore the correlation of its immunophenotype and prognosis. Methods: 100 cases paraffin-embedded DLBCL tissues were collected from January 2009 to December 2015 at the First Affiliated Hospital of Xinjiang Medical University along with 20 cases of reactive proliferative lymph nodes as control. Immunohistochemical methods were used to detect the expression of CD20, CD10, MUM1, Ki-67, bcl-6, PRDM1/Blimp1, C-MYC and PAX5 protein...
January 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
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