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Monoclonal gammopathy of undetermined significance

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https://www.readbyqxmd.com/read/28425076/monoclonal-gammopathy-of-renal-significance-mgrs-the-characteristics-and-significance-of-a-new-meta-entity
#1
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
#2
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
#3
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
#4
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...
March 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412476/monoclonal-gammopathy-of-undetermined-significance-and-biological-treatments-what-should-we-do
#5
EDITORIAL
Émilie Lemieux-Blanchard
No abstract text is available yet for this article.
April 12, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28397326/diagnosis-and-management-of-neuropathies-associated-with-plasma-cell-dyscrasias
#6
REVIEW
Evan Rosenbaum, Douglas Marks, Shahzad Raza
Neuropathies associated with plasma cell dyscrasias are a major cause of morbidity for patients managed by medical oncologists. Because of similarities in clinical presentation and on nerve conduction studies, identifying the underlying disease leading to a paraproteinemic neuropathy can often be difficult. In addition, the degree of neurologic deficit does not strictly correlate with the extent of abnormalities on common clinical laboratory testing. Fortunately, with increasing understanding into the biologic mechanisms of underlying hematologic diseases, additional biomarkers have recently been developed, thus improving our diagnostic capacity...
April 10, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28389623/neoplastic-plasma-cells-generate-an-inflammatory-environment-within-bone-marrow-and-markedly-alter-the-distribution-of-t-cells-between-lymphoid-compartments
#7
Oliver C Goodyear, Sarah Essex, Anandram Seetharam, Supratik Basu, Paul Moss, Guy Pratt
Monoclonal gammopathy of undetermined significance (MGUS) and multiple myeloma (MM) are characterised by the accumulation of malignant plasma cells within bone marrow and lead to a range of abnormalities in the peripheral blood T cell repertoire. We investigated the level of inflammatory chemokines within the bone marrow and blood of patients with MGUS and MM and related this to the pattern of chemokine receptor expression on T cells in both compartments.The expression of a wide range of chemokine ligands for CXCR3 and CCR4 was markedly increased within the bone marrow of patients with MGUS and MM compared to healthy donors...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28384387/a-first-czech-analysis-of-1887-cases-with-monoclonal-gammopathy-of-undetermined-significance
#8
Roman Hájek, Viera Sandecká, Zdeněk Adam, Ivan Špička, Vlastimil Ščudla, Evžen Gregora, Jakub Radocha, Lenka Walterová, Petr Kessler, Lenka Zahradová, Dagmar Adamová, Kamila Valentova, Ivan Vonke, Jarmila Obernauerová, David Starostka, Marek Wróbel, Lucie Brožová, Jiří Jarkovský, Aneta Mikulášová, Lucie Říhová, Sabina Ševčíková, Marta Krejčí, Ján Straub, Jiří Minařík, Luděk Pour, Zdeněk Král, Vladimír Maisnar
INTRODUCTION: Monoclonal gammopathy of undetermined significance (MGUS) is a premalignant condition with a risk of malignant conversion. PATIENTS AND METHODS: With the aim to estimate the cumulative risk MGUS progression into hematologic malignancies, we analyzed a nationwide population-based cohort of 1887 MGUS patients from the Czech Registry of Monoclonal Gammopathies (RMG) between 2007 and 2013. RESULTS: During the follow-up period (median 4 years; range 0...
April 6, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/28375557/genome-wide-association-study-on-monoclonal-gammopathy-of-unknown-significance-mgus
#9
Hauke Thomsen, Chiara Campo, Niels Weinhold, Miguel Inacio da Silva Filho, Luděk Pour, Evžen Gregora, Pavel Vodicka, Ludmila Vodickova, Per Hoffmann, Markus M Nöthen, Karl-Heinz Jöckel, Christian Langer, Roman Hajek, Hartmut Goldschmidt, Kari Hemminki, Asta Försti
OBJECTIVES: To identify germline variants contributing to the development of monoclonal gammopathy of undetermined significance (MGUS), an asymptomatic pre-malignant precursor for multiple myeloma (MM). METHODS: We conducted the first genome-wide association study (GWAS) on MGUS on 243 German cases with a replication on 294 Czech cases. Identified loci were further analyzed in 1508 German MM patients. New MM loci recently reported in a meta-analysis were also tested in the MGUS GWAS...
April 4, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/28371346/dramatic-resolution-of-disseminated-pyoderma-gangrenosum-associated-with-monoclonal-gammopathy-after-therapy-with-bortezomib-and-dexamethasone
#10
Virginia Velasco-Tamariz, Gonzalo Carreño-Tarragona, Fátima Tous-Romero, Elena Gil-de la Cruz, Estela Martín-Clavero, Raquel Rivera-Díaz
Pyoderma gangrenosum (PG) is an uncommon inflammatory and ulcerative skin disorder, which is commonly associated with systemic conditions such as inflammatory bowel disease, arthritis and haematological malignancies. It is widely stated that control of the underlying diseases may lead to resolution of PG. However, standard of care dictates that patients suffering with monoclonal gammopathy of undetermined significance or smouldering multiple myeloma (MM) should not receive therapy unless they progress to symptomatic MM...
March 29, 2017: International Wound Journal
https://www.readbyqxmd.com/read/28360189/biobanking-strategy-and-sample-preprocessing-for-integrative-research-in-monoclonal-gammopathies
#11
T Ševčíková, K Growková, Z Kufová, J Filipová, P Vrublová, T Jelínek, Z Kořístek, F Kryukov, E Kryukova, R Hájek
AIMS: Some types of monoclonal gammopathies are typified by a very limited availability of aberrant cells. Modern research use high throughput technologies and an integrated approach for detailed characterisation of abnormal cells. This strategy requires relatively high amounts of starting material which cannot be obtained from every diagnosis without causing inconvenience to the patient. The aim of this methodological paper is to reflect our long experience with laboratory work and describe the best protocols for sample collection, sorting and further preprocessing in terms of the available number of cells and intended downstream application in monoclonal gammopathies research...
March 30, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28344315/proteomic-characterization-of-human-multiple-myeloma-bone-marrow-extracellular-matrix
#12
S V Glavey, A Naba, S Manier, K Clauser, S Tahri, J Park, M R Reagan, M Moschetta, Y Mishima, M Gambella, A Rocci, A Sacco, M E O'Dwyer, J M Asara, A Palumbo, A M Roccaro, R O Hynes, I M Ghobrial
The extracellular matrix (ECM) is a major component of the tumor microenvironment, contributing to the regulation of cell survival, proliferation, differentiation and metastasis. In multiple myeloma (MM), interactions between MM cells and the bone marrow (BM) microenvironment, including the BM ECM, are critical to the pathogenesis of the disease and the development of drug resistance. Nevertheless, composition of the ECM in MM and its role in supporting MM pathogenesis has not been reported. We have applied a novel proteomic-based strategy and defined the BM ECM composition in patients with monoclonal gammopathy of undetermined significance (MGUS), newly diagnosed and relapsed MM compared to healthy donor-derived BM ECM...
March 27, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28340565/u-par-expression-in-cancer-associated-fibroblast-new-acquisitions-in-multiple-myeloma-progression
#13
S Ciavarella, A Laurenzana, S De Summa, B Pilato, A Chillà, R Lacalamita, C Minoia, F Margheri, A Iacobazzi, A Rana, F Merchionne, G Fibbi, M Del Rosso, A Guarini, S Tommasi, S Serratì
BACKGROUND: Multiple Myeloma (MM) is a B-cell malignancy in which clonal plasma cells progressively expand within the bone marrow (BM) as effect of complex interactions with extracellular matrix and a number of microenvironmental cells. Among these, cancer-associated fibroblasts (CAF) mediate crucial reciprocal signals with MM cells and are associated to aggressive disease and poor prognosis. A large body of evidence emphasizes the role of the urokinase plasminogen activator (u-PA) and its receptor u-PAR in potentiating the invasion capacity of tumor plasma cells, but little is known about their role in the biology of MM CAF...
March 24, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28316846/donor-derived-smoldering-multiple-myeloma-following-a-hematopoietic-cell-transplantation-for-aml
#14
Bita Fakhri, Mark Fiala, Michael Slade, Peter Westervelt, Armin Ghobadi
Posttransplant Lymphoproliferative Disorder (PTLD) is one of the most common malignancies complicating solid organ transplantation. In contrast, PTLD accounts for a minority of secondary cancers following allogeneic hematopoietic cell transplantation (HCT). Here we report on a 61-year-old woman who received an ABO-mismatched, HLA-matched unrelated donor hematopoietic cell transplantation from a presumably healthy donor for a diagnosis of acute myeloid leukemia (AML). Eighteen months following her transplant, she developed a monoclonal gammopathy...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28284031/immunoparesis-in-igm-gammopathies-as-a-useful-biomarker-to-predict-disease-progression
#15
Marcio Andrade-Campos, Ilda Murillo-Flórez, Ramón García-Sanz, Pilar Giraldo
BACKGROUND: The management of IgM monoclonal gammopathies undetermined significance (IgM-MGUS) and Waldenstrom's macroglobulinemia (WM) may be challenging. Modern immunoassays that quantify specific monoclonal heavy and light chain immunoglobulins are promising for their use in these applications. METHODS: Ninety consecutive patients (39 IgM-MGUS, 32 indolent WM [iWM], and 19 WM) seen between January 2007 and March 2014 were analyzed. Heavy/light chain (HLC) and serum free light chains assays (FLC) were determined at diagnosis to study their utility as biomarkers in IgM monoclonal gammopathies...
March 11, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28280994/detection-of-myd88-l265p-and-whim-like-cxcr4-mutation-in-patients-with-igm-monoclonal-gammopathy-related-disease
#16
Xin-Xin Cao, Qi Meng, Hao Cai, Tian-Hua He, Cong-Li Zhang, Wei Su, Jian Sun, Yue Li, Wei Xu, Dao-Bin Zhou, Jian Li
A broad spectrum of diseases are associated with IgM monoclonal gammopathy, including Waldenstrom macroglobulinemia (WM), various types of B cell non-Hodgkin's lymphoma (NHL), multiple myeloma (MM), primary amyloidosis (AL), and monoclonal gammopathy of undetermined significance (MGUS); these are called IgM monoclonal gammopathy related diseases (IgM-RD). We investigated MYD88 L265P and WHIM-like CXCR4 mutations in various IgM-RD. Patients with serum immunofixation electrophoresis confirmed IgM monoclonal gammopathy who had enough material for DNA extraction and presented between January 2008 and October 2016 at Peking Union Medical College Hospital were enrolled in this cohort...
March 9, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28280047/flame-cell-in-iga-monoclonal-gammopathy-of-undetermined-significance
#17
Ranjit Nair, Shereen Gheith
No abstract text is available yet for this article.
March 9, 2017: Blood
https://www.readbyqxmd.com/read/28260821/erratum-the-hematologic-definition-of-monoclonal-gammopathy-of-undetermined-significance-in-relation-to-paraproteinemic-keratopathy-an-american-ophthalmological-society-thesis
#18
Walter Lisch, Joanna Wasielica-Poslednik, Tero Kivelä, Ursula Schlötzer-Schrehardt, Jens M Rohrbach, Walter Sekundo, Uwe Pleyer, Christina Lisch, Alexander Desuki, Heidi Rossmann, Jayne S Weiss
[This corrects the article on p. T7 in vol. 114, PMID: 28050052.].
August 2016: Transactions of the American Ophthalmological Society
https://www.readbyqxmd.com/read/28243796/monoclonal-gammopathy-of-undetermined-significance-and-bone-health-outcomes-a-systematic-review-and-exploratory-meta-analysis
#19
Nicola Veronese, Claudio Luchini, Marco Solmi, Giuseppe Sergi, Enzo Manzato, Brendon Stubbs
Monoclonal gammopathy of undetermined significance (MGUS) is a common condition in the elderly. A number of studies have investigated the relationship between MGUS and bone health outcomes including bone mineral density (BMD), osteoporosis and fractures, but no meta-analysis exists. We conducted a systematic review and exploratory meta-analysis comparing bone health outcomes in patients with MGUS. Two independent authors searched PubMed and Scopus from inception until 19 October 2016. A meta-analysis of cross-sectional and longitudinal studies investigating fractures and BMD was conducted...
February 27, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28237948/lattice-like-paraproteinemic-keratopathy-ppk-of-monoclonal-gammopathy-of-undetermined-significance-mgus
#20
Ivo Gama, Leonor Almeida
No abstract text is available yet for this article.
February 24, 2017: BMJ Case Reports
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