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Monoclonal gammopathy of undetermined significance

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https://www.readbyqxmd.com/read/28550183/somatic-mutation-spectrum-in-monoclonal-gammopathy-of-undetermined-significance-indicates-a-less-complex-genomic-landscape-compared-to-multiple-myeloma
#1
Aneta Mikulasova, Christopher P Wardell, Alexander Murison, Eileen M Boyle, Graham H Jackson, Jan Smetana, Zuzana Kufova, Ludek Pour, Viera Sandecka, Martina Almasi, Pavla Vsianska, Evzen Gregora, Petr Kuglik, Roman Hajek, Faith E Davies, Gareth J Morgan, Brian A Walker
Monoclonal gammopathy of undetermined significance (MGUS) is a premalignant precursor of multiple myeloma with a 1% risk of progression per year. Although targeted analyses have shown the presence of specific genetic abnormalities such as IGH translocations, RB1 deletion, 1q gain, hyperdiploidy or RAS genes mutations, little is known about the molecular mechanism of malignant transformation. We have performed whole exome sequencing together with CGH+SNP array analysis in 33 flow-cytometry separated abnormal plasma cell samples from MGUS patients to describe somatic gene mutations and chromosome changes at the genome-wide level...
May 26, 2017: Haematologica
https://www.readbyqxmd.com/read/28540748/expression-of-the-il-6-receptor-alpha-chain-cd126-in-normal-and-abnormal-plasma-cells-in-monoclonal-gammopathy-of-undetermined-significance-and-smoldering-myeloma
#2
Dalia Abdel-Raouf Salem, Neha Korde, David J Venzon, David J Liewehr, Irina Maric, Katherine R Calvo, Raul Braylan, Prashant R Tembhare, Constance M Yuan, Carl Ola Landgren, Maryalice Stetler-Stevenson
IL-6 activity in normal plasma cells (nPCs) and abnormal plasma cells (aPCs) is CD126 (subunit of IL-6 receptor) dependent. We quantified CD126 expression on nPCs and aPCs in monoclonal gammopathy of undetermined significance (MGUS), smoldering myeloma (SMM), and multiple myeloma (MM). CD126 was detected on all nPCs and aPCs indicating that CD126 does not have diagnostic utility. CD126 expression was higher in aPCs than in nPCs in 85% SMM but only 41% MGUS and there was evidence that CD126 was higher in aPCs than nPCs in the SMM (p = ...
May 25, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28522957/crohn-s-disease-and-smoldering-multiple-myeloma-a-case-report-and-literature-review
#3
So Young Park, Jae Min Kim, Hyun Joon Kang, Minje Kim, Jae Joon Han, Chi Hoon Maeng, Sun Kyung Baek, Hwi-Joong Yoon, Si-Young Kim, Hyo Jong Kim
Crohn's disease (CD) is a chronic inflammatory bowel disease (IBD) that presents with abdominal pain, weight loss, and diarrhea. Although the etiology has not been fully elucidated, both environmental and genetic causes are known to be involved. In chronic inflammatory conditions such as IBD, B lymphocytes are chronically stimulated, and they induce monoclonal expansion of plasma cells, sometimes resulting in monoclonal gammopathy of undetermined significance. Immunomodulators that are commonly used to control inflammation, such as tumor necrosis factor-α (TNF-α) blockers could increase the possibility of hematologic malignancy...
April 2017: Intestinal Research
https://www.readbyqxmd.com/read/28508985/light-chain-fanconi-syndrome-in-a-patient-with-acute-myeloid-leukemia-and-monoclonal-gammopathy-of-undetermined-significance
#4
Daniel W Ross, Rimda Wanchoo, Adriana Guigova, Cristina Ghiuzeli, Steven L Allen, Kenar D Jhaveri
Proximal tubules are a target for paraproteinemic diseases. Cast nephropathy, light chain deposition diseases, and amyloidosis are frequently encountered in patients with multiple myeloma. Rarely, a subset of patients develop light chain Fanconi syndrome (LCFS). LCFS has been reported with multiple myeloma, monoclonal gammopathy of renal significance (MGRS), chronic lymphocytic leukemia, Waldenstrom's macroglobulinemia and diffuse large B-cell lymphoma. No cases have been described with other hematologic malignancies...
November 2016: CEN Case Reports
https://www.readbyqxmd.com/read/28508971/short-term-outcome-and-quality-of-life-in-kidney-transplant-recipient-with-monoclonal-gammopathy
#5
Masaaki Yanishi, Hiroyasu Tsukaguchi, Takashi Yoshida, Hisanori Taniguchi, Kenji Yoshida, Takao Mishima, Yoshihiro Komai, Kaneki Yasuda, Masato Watanabe, Motohiko Sugi, Hidefumi Kinoshita, Tadashi Matsuda
Monoclonal gammopathy of undetermined significance (MGUS) is the common pre-malignant B cell disorders with a general prevalence of 3-5 % at age over 50. Because of the potential malignant transformation and immune insufficiency, pre-transplant MGUS recipient should be carefully followed after allograft transplantation. The post-transplant prognosis and quality of life (QOL) in patient with MGUS have not yet been fully determined. The aim of this study is to evaluate function and pathology of the renal allograft and self-assessment QOL changes during 2 years after transplantation in our case of MGUS-bearing recipient...
November 2016: CEN Case Reports
https://www.readbyqxmd.com/read/28502031/vitamin-d-and-plasma-cell-dyscrasias-reviewing-the-significance
#6
REVIEW
Nicholas Burwick
Monoclonal gammopathy of undetermined significance (MGUS) is a clonal plasma cell disorder and precursor disease to multiple myeloma and other related cancers. While MGUS is considered a benign disorder, with a low risk of disease progression, patients have altered bone microarchitecture and an increased risk of bone fracture. In addition, alterations in immune function are regularly found to correlate with disease activity. Vitamin D, an important hormone for bone and immune health, is commonly deficient in multiple myeloma patients...
May 13, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28498784/depth-of-response-in-multiple-myeloma-a-pooled-analysis-of-three-pethema-gem-clinical-trials
#7
Juan-Jose Lahuerta, Bruno Paiva, Maria-Belen Vidriales, Lourdes Cordón, Maria-Teresa Cedena, Noemi Puig, Joaquin Martinez-Lopez, Laura Rosiñol, Norma C Gutierrez, María-Luisa Martín-Ramos, Albert Oriol, Ana-Isabel Teruel, María-Asunción Echeveste, Raquel de Paz, Felipe de Arriba, Miguel T Hernandez, Luis Palomera, Rafael Martinez, Alejandro Martin, Adrian Alegre, Javier De la Rubia, Alberto Orfao, María-Victoria Mateos, Joan Blade, Jesus F San-Miguel
Purpose To perform a critical analysis on the impact of depth of response in newly diagnosed multiple myeloma (MM). Patients and Methods Data were analyzed from 609 patients who were enrolled in the GEM (Grupo Español de Mieloma) 2000 and GEM2005MENOS65 studies for transplant-eligible MM and the GEM2010MAS65 clinical trial for elderly patients with MM who had minimal residual disease (MRD) assessments 9 months after study enrollment. Median follow-up of the series was 71 months. Results Achievement of complete remission (CR) in the absence of MRD negativity was not associated with prolonged progression-free survival (PFS) and overall survival (OS) compared with near-CR or partial response (median PFS, 27, 27, and 29 months, respectively; median OS, 59, 64, and 65 months, respectively)...
May 12, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28493835/expression-and-release-of-glucose-regulated-protein-78-grp78-in-multiple-myeloma
#8
Normann Steiner, Bojana Borjan, Roman Hajek, Karin Jöhrer, Georg Göbel, Wolfgang Willenbacher, Johann Kern, Eberhard Gunsilius, Gerold Untergasser
INTRODUCTION: Multiple myeloma (MM) is a plasma cell neoplasm that is mostly incurable due to acquired resistance during the treatment course. Thus, we evaluated expression and release of glucose-regulated protein 78 kDa (GRP78/BiP), an endoplasmic reticulum (ER) based pro-survival chaperone involved in immunoglobulin folding and unfolded protein responses. RESULTS: GRP78 protein expression in the ER and on the cell surface did not significantly differ between MGUS, NDMM and RRMM patients although there was a trend to higher surface expression in RRMM...
April 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28479151/laboratory-testing-for-monoclonal-gammopathies-focus-on-monoclonal-gammopathy-of-undetermined-significance-and-smoldering-multiple-myeloma
#9
REVIEW
Maria A V Willrich, David L Murray, Robert A Kyle
Monoclonal gammopathies (MG) are defined by increased proliferation of clonal plasma cells, resulting in a detectable abnormality called monoclonal component or M-protein. Detection of the M-protein as either narrow peaks on protein electrophoresis and discrete bands on immunofixation is the defining feature of MG. MG are classified as low-tumor burden disorders, pre-malignancies and malignancies. Since significant disease can be present at any level, several different tests are employed in order to encompass the inherent diverse nature of the M-proteins...
May 4, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28476134/overexpression-of-rkip-and-its-cross-talk-with-several-regulatory-gene-products-in-multiple-myeloma
#10
REVIEW
Anna Shvartsur, Kevin B Givechian, Hermes Garban, Benjamin Bonavida
Multiple myeloma (MM) is a clonal plasma-cell neoplastic disorder arising from an indolent premalignant disease known as monoclonal gammopathy of undetermined significance (MGUS). MM is a biologically complex heterogeneous disease reflected by its variable clinical responses of patients receiving the same treatment. Therefore, a molecular identification of stage-specific biomarkers will support a more individualized precise diagnostic/prognostic approach, an effective therapeutic regime, and will assist in the identification of novel therapeutic molecular targets...
May 5, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28473042/monoclonal-gammopathy-associated-peripheral-neuropathy-diagnosis-and-management
#11
REVIEW
Hafsa M Chaudhry, Michelle L Mauermann, S Vincent Rajkumar
Monoclonal gammopathies comprise a spectrum of clonal plasma cell disorders that include monoclonal gammopathy of undetermined significance, multiple myeloma, and Waldenström macroglobulinemia. In this review, we outline the epidemiology, etiology, classification, diagnosis, and treatment of monoclonal gammopathy-associated peripheral neuropathy. Monoclonal gammopathy of undetermined significance is relatively common in the general population, with a prevalence of 3% to 4% among individuals older than age 50 years...
May 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/28472865/electrophysiological-features-of-poems-syndrome-compared-to-mgus-related-neuropathy
#12
Hyunjin Kim, Young-Min Lim, Joo Yea Jin, Dok Hyun Yoon, Cheolwon Suh, Sun-Young Kim, Jae-Cheol Jo, Kwang-Kuk Kim
INTRODUCTION: Polyneuropathy, organomegaly, endocrinopathy, M-protein, and skin changes (POEMS) syndrome and monoclonal gammopathy of undetermined significance (MGUS) are paraproteinemic disorders that can cause demyelinating polyneuropathy. Here, we assessed the findings of nerve conduction studies (NCSs) in patients with POEMS syndrome and MGUS-related neuropathy to determine whether the NCS characteristics can help differentiate between the conditions. METHODS: We enrolled 24 POEMS and 37 MGUS-related neuropathy patients...
May 4, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28466550/cutting-edge-genomics-reveal-new-insights-into-tumour-development-disease-progression-and-therapeutic-impacts-in-multiple-myeloma
#13
REVIEW
Ankit K Dutta, Duncan R Hewett, J Lynn Fink, John P Grady, Andrew C W Zannettino
Multiple Myeloma (MM) is a haematological malignancy characterised by the clonal expansion of plasma cells (PCs) within the bone marrow. Despite advances in therapy, MM remains a largely incurable disease with a median survival of 6 years. In almost all cases, the development of MM is preceded by the benign PC condition Monoclonal Gammopathy of Undetermined Significance (MGUS). Recent studies show that the transformation of MGUS to MM is associated with complex genetic changes. Understanding how these changes contribute to evolution will present targets for clinical intervention...
May 3, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28456791/nk-cells-and-multiple-myeloma-associated-endothelial-cells-molecular-interactions-and-influence-of-il-27
#14
Alessandra Dondero, Beatrice Casu, Francesca Bellora, Angelo Vacca, Annunziata De Luisi, Maria Antonia Frassanito, Claudia Cantoni, Silvia Gaggero, Daniel Olive, Alessandro Moretta, Cristina Bottino, Roberta Castriconi
Angiogenesis represents a hallmark of tumor progression in Multiple Myeloma (MM), a still incurable malignancy. Here we analyzed the activity of cytokine-stimulated NK cells against tumor-associated endothelial cells isolated from bone marrow aspirates of MM patients with active disease (MMECs). We show that NK cells activated with optimal doses of IL-15 killed MMECs thanks to the concerted action of multiple activating receptors. In particular, according to the high expression of PVR and Nectin-2 on MMECs, DNAM-1 actively participated in target recognition...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28439875/epigenetic-repression-of-mir-375-is-the-dominant-mechanism-for-constitutive-activation-of-the-pdpk1-rps6ka3-signalling-axis-in-multiple-myeloma
#15
Shotaro Tatekawa, Yoshiaki Chinen, Masaki Ri, Tomoko Narita, Yuji Shimura, Yayoi Matsumura-Kimoto, Taku Tsukamoto, Tsutomu Kobayashi, Eri Kawata, Nobuhiko Uoshima, Tomohiko Taki, Masafumi Taniwaki, Hiroshi Handa, Shinsuke Iida, Junya Kuroda
Cytogenetic/molecular heterogeneity is the hallmark of multiple myeloma (MM). However, we recently showed that the serine/threonine kinase PDPK1 and its substrate RPS6KA3 (also termed RSK2) are universally active in MM, and play pivotal roles in myeloma pathophysiology. In this study, we assessed involvement of aberrant miR-375 repression in PDPK1 overexpression in MM. An analysis of plasma cells from 30 pre-malignant monoclonal gammopathies of undetermined significance and 73 MM patients showed a significant decrease in miR-375 expression in patient-derived plasma cells regardless of the clinical stage, compared to normal plasma cells...
April 25, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28425076/monoclonal-gammopathy-of-renal-significance-mgrs-the-characteristics-and-significance-of-a-new-meta-entity
#16
REVIEW
Mariana Ciocchini, Jorge Arbelbide, Carlos G Musso
Monoclonal gammopathy of renal significance (MGRS) is a new nosological group of entities (meta-entity) defined in 2012, whose pathogenesis depends on monoclonal immunoglobulins (Ig) secreted by low-grade lymphoproliferative disorders, which belong to M-protein-related diseases. Renal damage is the result of monoclonal Ig deposit or its activity as autoantibodies, which can compromise any nephronal area. MGRS does not include kidney diseases produced by high-grade lymphoproliferative disorders as well as those whose pathogenesis are independent of monoclonal Ig (such as drug toxicity or metabolic disorders)...
April 19, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28422865/crystalglobulinemia-manifesting-as-chronic-arthralgia-and-acute-limb-ischemia-a-clinical-case-report
#17
Nobuya Abe, Tomoko Tomita, Miyuki Bohgaki, Hideki Kasahara, Takao Koike
RATIONALE: Crystalglobulinemia is a rare disease caused by monoclonal immunoglobulins, characterized by irreversible crystallization on refrigeration. It causes systemic symptoms including purpura, arthralgia, and vessel occlusive conditions to be exacerbated by exposure to cold. We report a patient with crystalglobulinemia associated with monoclonal gammopathy of undetermined significance (MGUS) manifesting as chronic arthralgia and recurrent acute arterial occlusion. PRESENTING CONCERNS: A 61-year-old man, who had been diagnosed with MGUS and who had arthralgia of unknown origin, presented with recurrent acute limb ischemia after surgical thromboembolectomy...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28417905/analytical-criticalities-associated-to-different-immunological-methods-for-serum-free-light-chain-detection-in-plasma-cell-dyscrasias-a-description-of-particular-clinical-cases
#18
Rocco Sabatino, Antonio Perrone, Marco Cuomo, Sandra Liotti, Vittoria Barchiesi, Monica Cantile, Ernesta Cavalcanti
Current criteria for differential diagnosis of multiple myeloma (MM), Monoclonal gammopathy of undetermined significance (MGUS), and smoldering multiple myeloma (SMM) are included in the 2003 guidelines by the International Myeloma Working Group (IMWG). An updated version was then published in 2014, highlighting the importance of serum free light chain (sFLC) detection, as well as the κ/λ ratio as excellent indicators of clonality. At present, two commercial assays for sFLC quantification are available: the Freelite™ assay and the N-Latex assay...
April 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28415715/epha3-acts-as-proangiogenic-factor-in-multiple-myeloma
#19
Antonella Caivano, Francesco La Rocca, Ilaria Laurenzana, Tiziana Annese, Roberto Tamma, Ubaldo Famigliari, Vittorio Simeon, Stefania Trino, Luciana De Luca, Oreste Villani, Simona Berardi, Antonio Basile, Angelo Vacca, Giuseppe Saglio, Luigi Del Vecchio, Pellegrino Musto, Daniela Cilloni
This study investigates the role of ephrin receptor A3 (EphA3) in the angiogenesis of Multiple Myeloma (MM) and the effects of a selective target of EphA3 by a specific monoclonal antibody on primary bone marrow endothelial cells (ECs) of MM patients.EphA3 mRNA and protein were evaluated in ECs of MM patients (MMECs), in ECs of patients with monoclonal gammopathies of undetermined significance (MGECs) and in ECs of healthy subjects (control ECs). The effects of EphA3 targeting by mRNA silencing (siRNA) or by the anti EphA3 antibody on the angiogenesis were evaluated...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412476/monoclonal-gammopathy-of-undetermined-significance-and-biological-treatments-what-should-we-do
#20
EDITORIAL
Émilie Lemieux-Blanchard
No abstract text is available yet for this article.
April 12, 2017: Joint, Bone, Spine: Revue du Rhumatisme
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