scholarly journals Molecular Sub-typing of Diffuse Large B-cell Lymphoma

2021 ◽  
Author(s):  
Thomas Drago
Keyword(s):  
B Cell ◽  
Germinal Center ◽  
Cell Lymphoma ◽  
Rapid Development ◽  
B Cell Lymphoma ◽  
The United States ◽  
Cellular Level ◽  
Non Hodgkin Lymphoma ◽  
Large B Cell Lymphoma ◽  
Large B Cell

Diffuse large B-cell lymphoma (DLBCL) is the most common form of Non-Hodgkin Lymphoma (NHL) in adults. Affecting nearly 7 out of every 100,000 people in the United States annually, this hematogenous neoplasm is known for its aggressiveness and rapid development. Being the most common NHL, it has been divided into several subgroups based on pathogenesis and treatment methods. In particular, subtypes such as germinal center, activated B-cell-like, and primary mediastinal diffuse large B-cell lymphomas  have been divided by their uniqueness of pathology at the cellular level. Knowing the numerous cytokines, inflammatory markers, and other microcellular processes that these lymphomas disrupt can help target an effective therapeutic at the disease.

Metody cytogenetyki molekularnej w różnicowaniu agresywnych B-NHL

2019 ◽  
Vol 50 (3) ◽  
pp. 109-115
Author(s):  
Beata Grygalewicz
Keyword(s):  
B Cell ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
World Health ◽  
High Grade ◽  
Non Hodgkin Lymphoma ◽  
Large B Cell Lymphoma ◽  
Health Organization ◽  
Large B Cell

StreszczenieB-komórkowe agresywne chłoniaki nieziarnicze (B-cell non-Hodgkin lymphoma – B-NHL) to heterogenna grupa nowotworów układu chłonnego, wywodząca się z obwodowych limfocytów B. Aberracje cytogenetyczne towarzyszące B-NHL to najczęściej translokacje onkogenów takich jak MYC, BCL2, BCL6 w okolice genowych loci dla łańcuchów ciężkich lub lekkich immunoglobulin. W niektórych przypadkach dochodzi do wystąpienia kilku wymienionych aberracji jednocześnie, tak jak w przypadkach przebiegających z równoczesną translokacją genów MYC i BCL2 (double hit), niekiedy także z obecnością rearanżacji BCL6 (triple hit). Takie chłoniaki cechuje szczególnie agresywny przebieg kliniczny. Obecnie molekularna diagnostyka cytogenetyczna przy użyciu techniki fluorescencyjnej hybrydyzacji in situ (FISH) oraz, w niektórych przypadkach, aCGH jest niezbędnym narzędziem rozpoznawania, klasyfikowania i oceny stopnia zaawansowania agresywnych, nieziarniczych chłoniaków B-komórkowych. Technika mikromacierzy CGH (aCGH) była kluczowym elementem wyróżnienia prowizorycznej grupy chłoniaków Burkitt-like z aberracją chromosomu 11q (Burkitt-like lymphoma with 11q aberration – BLL, 11q) w najnowszej klasyfikacji nowotworów układu chłonnego Światowej Organizacji Zdrowia (World Health Organization – WHO) z 2016 r. Omówione zostaną sposoby różnicowania na poziomie cytogenetycznym takich chłoniaków jak: chłoniak Burkitta (Burkitt lymphoma – BL), chłoniak rozlany z dużych komórek B (diffuse large B-cell lymphoma – DLBCL) oraz 2 nowych jednostek klasyfikacji WHO 2016, czyli chłoniaka z komórek B wysokiego stopnia złośliwości z obecnością translokacji MYC i BCL2 i/lub BCL6 (high-grade B-cell lymphoma HGBL, with MYC and BCL2 and/or BCL6 translocations) oraz chłoniaka BLL, 11q.

scholarly journals Pathophysiological significance and therapeutic targeting of germinal center kinase in diffuse large B-cell lymphoma

Blood ◽  
2016 ◽  
Vol 128 (2) ◽  
pp. 239-248 ◽  
Author(s):  
Julie Marie Matthews ◽  
Shruti Bhatt ◽  
Matthew P. Patricelli ◽  
Tyzoon K. Nomanbhoy ◽  
Xiaoyu Jiang ◽  
...  
Keyword(s):  
B Cell ◽  
Germinal Center ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Therapeutic Targeting ◽  
Large B Cell Lymphoma ◽  
Key Points ◽  
Large B Cell

Key Points GCK signaling is activated in DLBCL, and this signaling is important to DLBCL proliferation and survival. Therapeutic targeting of GCK is feasible and may advance efforts to cure DLBCL patients.

scholarly journals UCH-L1 is induced in germinal center B cells and identifies patients with aggressive germinal center diffuse large B-cell lymphoma

Blood ◽  
2016 ◽  
Vol 127 (12) ◽  
pp. 1564-1574 ◽  
Author(s):  
Tibor Bedekovics ◽  
Sajjad Hussain ◽  
Andrew L. Feldman ◽  
Paul J. Galardy
Keyword(s):  
B Cell ◽  
Germinal Center ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Neuronal Marker ◽  
Large B Cell Lymphoma ◽  
Increased Risk ◽  
Key Points ◽  
Poor Outcomes ◽  
Large B Cell

Key Points The neuronal marker UCH-L1 is induced in, and specifically augments the oncogene-induced transformation of, GCB cells. High levels of UCHL1 identify patients with GC DLBCL with an increased risk for poor outcomes.

scholarly journals Outcome of R-CHOP or CHOP Regimen for Germinal Center and Nongerminal Center Subtypes of Diffuse Large B-Cell Lymphoma of Chinese Patients

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Ying Huang ◽  
Sheng Ye ◽  
Yabing Cao ◽  
Zhiming Li ◽  
Jiajia Huang ◽  
...  
Keyword(s):  
B Cell ◽  
Germinal Center ◽  
Survival Data ◽  
Prognostic Value ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Chinese Patients ◽  
First Line ◽  
Large B Cell Lymphoma ◽  
Large B Cell

Diffuse large B-cell lymphoma (DLBCL) can be molecularly subtyped as either germinal center B-cell (GCB) or non-GCB. The role of rituximab(R) in these two groups remains unclear. We studied 204 patients with de novo DLBCL (107 treated with first-line CHOP; 97 treated with first-line R-CHOP), patients being stratified into GCB and non-GCB on the basis of BCL-6, CD10, and MUM1 protein expression. The relationships between clinical characteristics, survival data, and immunophenotype (IHC) were studied. The 5-year overall survival (OS) in the CHOP and R-CHOP groups was 50.4% and 66.6% (P=0.031), respectively. GCB patients had a better 5-year OS than non-GCB patients whether treated with CHOP or not (65.0% versus 40.9%;P=0.011). In contrast, there is no difference in the 5-year OS for the GCB and non-GCB with R-CHOP (76.5% versus 61.3%;P=0.141). In non-GCB subtype, additional rituximab improved survival better than CHOP (61.3% versus 40.9%;P=0.0303). These results indicated that addition of rituximab to standard chemotherapy eliminates the prognostic value of IHC-defined GCB and non-GCB phenotypes in DLBCL by improving the prognostic value of non-GCB subtype of DLBCL.

scholarly journals Intravascular Large B cell Lymphoma in Taiwan: An Asian Variant of Non-germinal-center Origin

2010 ◽  
Vol 109 (3) ◽  
pp. 185-191 ◽  
Author(s):  
Min-Shu Hsieh ◽  
Yi-Chen Yeh ◽  
Yueh-Hung Chou ◽  
Chung-Wu Lin
Keyword(s):  
B Cell ◽  
Germinal Center ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Large B Cell Lymphoma ◽  
Large B Cell

scholarly journals Aggressive Lymphoma “Sarcoma Mimicker” Originating in the Gluteus and Adductor Muscles: A Case Report and Literature Review

2016 ◽  
Vol 9 ◽  
pp. CCRep.S39052 ◽  
Author(s):  
Sarah A. Elkourashy ◽  
Abdulqadir J. Nashwan ◽  
Syed I. Alam ◽  
Adham A. Ammar ◽  
Ahmed M. El Sayed ◽  
...  
Keyword(s):  
Case Report ◽  
B Cell ◽  
Multidisciplinary Team ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
High Dose ◽  
Non Hodgkin Lymphoma ◽  
Large B Cell Lymphoma ◽  
Adductor Muscles ◽  
Large B Cell

Extranodal lymphoma (ENL) occurs in approximately 30%–40% of all patients with non-Hodgkin lymphoma and has been described in almost all organs and tissues. However, diffuse large B-cell lymphoma is the most common histological subtype of non-Hodgkin lymphoma, primarily arising in the retroperitoneal region. In this article, we report a rare case of an adult male diagnosed with primary diffuse large B-cell lymphoma of the gluteal and adductor muscles with aggressive bone involvement. All appropriate radiological and histopathological studies were done for diagnosis and staging. After discussion with the lymphoma multidisciplinary team, it was agreed to start on R-CHOP protocol (rituximab, cyclophosphamide, doxorubicin (Adriamycin), vincristine (Oncovin®), and prednisone) as the standard of care, which was later changed to R-CODOX-M/R-IVAC protocol (rituximab, cyclophosphamide, vincristine (Oncovin®), doxorubicin, and high-dose methotrexate alternating with rituximab, ifosfamide, etoposide, and high-dose cytarabine) due to inadequate response. Due to the refractory aggressive nature of the disease, subsequent decision of the multidisciplinary team was salvage chemotherapy and autologous stem cell transplant. The aim of this case report was to describe and evaluate the clinical presentation and important radiological features of extranodal lymphoma affecting the musculoskeletal system.

scholarly journals Primary pituitary diffuse large B-cell lymphoma with somatotroph hyperplasia and acromegaly: case report

2017 ◽  
Vol 126 (5) ◽  
pp. 1725-1730 ◽  
Author(s):  
Vijay M. Ravindra ◽  
Amol Raheja ◽  
Heather Corn ◽  
Meghan Driscoll ◽  
Corrine Welt ◽  
...  
Keyword(s):  
B Cell ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Common Type ◽  
Histopathological Diagnosis ◽  
Sellar Lesions ◽  
Non Hodgkin Lymphoma ◽  
Large B Cell Lymphoma ◽  
Persistent Elevation ◽  
Large B Cell

Diffuse large B-cell lymphoma (DLBCL) is the most common type of non-Hodgkin lymphoma and comprises approximately 30% of all lymphomas. Patients typically present with a nonpainful mass in the neck, groin, or abdomen associated with constitutional symptoms. In this report, however, the authors describe a rare case of a 61-year-old woman with hyperprolactinemia, hypothyroidism, and acromegaly (elevation of insulin-like growth factor-1 [IGF-1]) with elevated growth hormone–releasing hormone (GHRH) in whom an MRI demonstrated diffuse enlargement of the pituitary gland. Despite medical treatment, the patient had persistent elevation of IGF-1. She underwent a transsphenoidal biopsy, which yielded a diagnosis of DLBCL with an activated B-cell immunophenotype with somatotroph hyperplasia. After stereo-tactic radiation therapy in combination with chemotherapy, she is currently in remission from her lymphoma and has normalized IGF-1 levels without medical therapy, 8 months after her histopathological diagnosis. This is the only reported case of its kind and displays the importance of a broad differential diagnosis, multidisciplinary evaluation, and critical intraoperative decision-making when treating atypical sellar lesions.

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