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https://www.readbyqxmd.com/read/28439985/the-utility-of-mass-fix-to-detect-and-monitor-monoclonal-proteins-in-the-clinic
#1
Paolo Milani, David L Murray, David R Barnidge, Mindy C Kohlhagen, John R Mills, Giampaolo Merlini, Surendra Dasari, Angela Dispenzieri
The detection and quantification of monoclonal-proteins (M-proteins) are necessary for the diagnosis and evaluation of response in plasma cell dyscrasias. Immunoglobulin enrichment-coupled with matrix-assisted laser desorption ionization time-of-flight mass-spectrometry (MASS-FIX) is a simple and inexpensive method to identify M-proteins, but its clinical generalizability has not yet been elucidated. We compared MASS-FIX to protein electrophoresis (PEL), serum/urine immunofixation-electrophoresis (IFE) and quantitative serum free-light chain (FLC) for the identification of M-proteins in different clinical diagnoses...
April 25, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28425076/monoclonal-gammopathy-of-renal-significance-mgrs-the-characteristics-and-significance-of-a-new-meta-entity
#2
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
#3
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
#4
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/28397326/diagnosis-and-management-of-neuropathies-associated-with-plasma-cell-dyscrasias
#5
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
#6
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
#7
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
#8
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/28370486/clinical-presentation-and-outcomes-of-patients-with-type-1-monoclonal-cryoglobulinemia
#9
Surbhi Sidana, S Vincent Rajkumar, Angela Dispenzieri, Martha Q Lacy, Morie A Gertz, Francis K Buadi, Suzanne R Hayman, David Dingli, Prashant Kapoor, Wilson I Gonsalves, Ronald S Go, Yi Lisa Hwa, Nelson Leung, Amie L Fonder, Miriam A Hobbs, Steven R Zeldenrust, Stephen J Russell, John A Lust, Robert A Kyle, Shaji K Kumar
We describe a series of 102 patients diagnosed from January 1, 1990 to December 31, 2015 with Type 1 monoclonal cryoglobulinemia (MoC). Symptoms were seen in 89 (87%) patients, including: cutaneous symptoms in 64 (63%) patients, with purpura (n=43, 42%) and ulcers/gangrene (n=35, 34%) being most common; neurological findings in 33 (32%) patients, most frequently sensory neuropathy (n=24, 24%); vasomotor symptoms, mainly Raynaud's phenomenon in 25 (25%); arthralgias in 24 (24%); and renal manifestations, primarily glomerulonephritis in 14 (14%) patients...
March 29, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28344315/proteomic-characterization-of-human-multiple-myeloma-bone-marrow-extracellular-matrix
#10
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/28284031/immunoparesis-in-igm-gammopathies-as-a-useful-biomarker-to-predict-disease-progression
#11
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
#12
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/28243796/monoclonal-gammopathy-of-undetermined-significance-and-bone-health-outcomes-a-systematic-review-and-exploratory-meta-analysis
#13
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
#14
Ivo Gama, Leonor Almeida
No abstract text is available yet for this article.
February 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28234344/mutational-landscape-reflects-the-biological-continuum-of-plasma-cell-dyscrasias
#15
A Rossi, M Voigtlaender, S Janjetovic, B Thiele, M Alawi, M März, A Brandt, T Hansen, J Radloff, G Schön, U Hegenbart, S Schönland, C Langer, C Bokemeyer, M Binder
We subjected 90 patients covering a biological spectrum of plasma cell dyscrasias (monoclonal gammopathy of undetermined significance (MGUS), amyloid light-chain (AL) amyloidosis and multiple myeloma) to next-generation sequencing (NGS) gene panel analysis on unsorted bone marrow. A total of 64 different mutations in 8 genes were identified in this cohort. NRAS (28.1%), KRAS (21.3%), TP53 (19.5%), BRAF (19.1%) and CCND1 (8.9%) were the most commonly mutated genes in all patients. Patients with non-myeloma plasma cell dyscrasias showed a significantly lower mutational load than myeloma patients (0...
February 24, 2017: Blood Cancer Journal
https://www.readbyqxmd.com/read/28229908/multiple-myeloma-tumor-cells-are-selectively-killed-by-pharmacologically-dosed-ascorbic-acid
#16
Jiliang Xia, Hongwei Xu, Xiaoyan Zhang, Chantal Allamargot, Kristen L Coleman, Randy Nessler, Ivana Frech, Guido Tricot, Fenghuang Zhan
High-dose chemotherapies to treat multiple myeloma (MM) can be life-threatening due to toxicities to normal cells and there is a need to target only tumor cells and/or lower standard drug dosage without losing efficacy. We show that pharmacologically-dosed ascorbic acid (PAA), in the presence of iron, leads to the formation of highly reactive oxygen species (ROS) resulting in cell death. PAA selectively kills CD138(+) MM tumor cells derived from MM and smoldering MM (SMM) but not from monoclonal gammopathy undetermined significance (MGUS) patients...
February 16, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28201978/multiple-myeloma-and-the-immune-microenvironment
#17
Yawara Kawano, Aldo M Roccaro, Jamil Azzi, Irene M Ghobrial
One of the great advances in the field of cancer therapy in recent years is the emergence of immune therapies. Immune therapies, especially immune checkpoint inhibitors, have shown promising results in pre-clinical models and clinical trials of solid tumors, such as melanoma, breast cancer and lung cancer. Therapeutic strategies targeting the immune microenvironment have also been applied to hematological malignancies such as multiple myeloma (MM), a plasma cell neoplasia characterized by clonal expansion of malignant plasma cells mainly in the bone marrow (BM)...
February 13, 2017: Current Cancer Drug Targets
https://www.readbyqxmd.com/read/28182355/pure-red-cell-aplasia-associated-with-monoclonal-gammopathy-of-undetermined-significance-and-literature-review
#18
Hyunjung Gu, Woo-In Lee, You La Jeon, So Young Kang, Myeong Hee Kim, Tae Sung Park
BACKGROUND: Pure red cell aplasia (PRCA) is an uncommon disease which involves an almost complete absence of the erythroid lineage in bone marrow (BM) and causes severe anemia. Cases due to monoclonal gammopathy occurring in plasma cell disorder have been infrequently reported. Here we report a case of PRCA associated plasma cell disorder, especially monoclonal gammopathy of undetermined significance (MGUS). METHODS: A 55-year-old male visited the ER due to general weakness...
February 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28158311/a-single-arm-open-label-phase-2-clinical-trial-evaluating-disease-response-following-treatment-with-bi-505-a-human-anti-intercellular-adhesion-molecule-1-monoclonal-antibody-in-patients-with-smoldering-multiple-myeloma
#19
Stina Wichert, Gunnar Juliusson, Åsa Johansson, Elisabeth Sonesson, Ingrid Teige, Anna Teige Wickenberg, Björn Frendeus, Magnus Korsgren, Markus Hansson
BACKGROUND: Smoldering multiple myeloma (SMM) is an indolent disease stage, considered to represent the transition phase from the premalignant MGUS (Monoclonal Gammopathy of Undetermined Significance) state towards symptomatic multiple myeloma (MM). Even though this diagnosis provides an opportunity for early intervention, few treatment studies have been done and the current standard of care is observation until progression. BI-505, a monoclonal antibody directed against intercellular adhesion molecule 1 (ICAM-1) with promising anti-myeloma activity in preclinical trials, is a possible treatment approach for this patient category with potential to eliminate tumor cells with minimal long-term side effects...
2017: PloS One
https://www.readbyqxmd.com/read/28070468/multiple-myeloma-associated-chronic-inflammatory-demyelinating-polyradiculoneuropathy-the-importance-of-continued-surveillance
#20
Adebayo A Fasanya, Michael F Loncharich, Viral Gandhi, Sandeep Rana, Marvin Balaan
Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is an autoimmune disease presenting with weakness and numbness in a remitting or chronic progressive course. It is known to have several clinical presentations and several associated diseases. CIDP has been associated with multiple myeloma, monoclonal gammopathy of undetermined significance (MGUS), and other paraproteinemias. We present a case of refractory CIDP in which the initial workup for multiple myeloma was negative, and multiple myeloma was then diagnosed two and half years later...
November 28, 2016: Curēus
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