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https://www.readbyqxmd.com/read/29153091/detection-of-complex-genomic-signatures-associated-with-risk-in-plasma-cell-disorders
#1
Nadine K Berry, Amanda Dixon-McIver, Rodney J Scott, Philip Rowlings, Anoop K Enjeti
Plasma cell disorders (PCD) range from benign to highly malignant disease. The ability to detect risk-stratifying aberrations based on cytogenetic and molecular genetic assays plays an increasing role in therapeutic decision making. In this study, 58 patients were chosen for screening by comparative genomic hybridisation microarray (aCGH) to identify the new high-risk prognostic markers of chromothripsis and chromoanasynthesis. All patients had an unequivocal clinical diagnosis of a plasma cell disorder (plasma cell myeloma (PCM)(n = 51) or monoclonal gammopathy of undetermined significance (MGUS)(n = 7)) and an abnormal FISH result...
December 2017: Cancer Genetics
https://www.readbyqxmd.com/read/29146225/response-comparison-of-multiple-myeloma-and-monoclonal-gammopathy-of-undetermined-significance-to-the-same-anti-myeloma-therapy-a-retrospective-cohort-study
#2
John P Campbell, Jennifer L J Heaney, Sankalp Pandya, Zaheer Afzal, Martin Kaiser, Roger Owen, J Anthony Child, David A Cairns, Walter Gregory, Gareth J Morgan, Graham H Jackson, Chris M Bunce, Mark T Drayson
BACKGROUND: Multiple myeloma is consistently preceded by monoclonal gammopathy of undetermined significance (MGUS), which is usually only treated by a form of anti-multiple myeloma therapy if it is causing substantial disease through deposition of secreted M proteins. However, studies comparing how MGUS and multiple myeloma plasma cell clones respond to these therapies are scarce. Biclonal gammopathy multiple myeloma is characterised by the coexistence of an active multiple myeloma clone and a benign MGUS clone, and thus provides a unique model to assess the responses of separate clones to the same anti-multiple myeloma therapy, in the same patient, at the same time...
November 13, 2017: Lancet Haematology
https://www.readbyqxmd.com/read/29137341/clinicopathological-significance-of-the-p16-hypermethylation-in-multiple-myeloma-a-systematic-review-and-meta-analysis
#3
Huiqing Yu, Liejun Yang, Yunfeng Fu, Meng Gao, Ling Tian
It is well known that the loss of function of the p16INK4A gene is mainly caused by the hypermethylation of the p16 gene; however, whether or not the inactivation is associated with the clinical significance of multiple myeloma (MM) remains elusive. A meta-analysis was conducted to quantitatively determine the role of the p16 hypermethylation in the clinical significance of MM. We demonstrated that MM patients show much higher hypermethylation rates on the p16 gene in bone marrow compared to normal individuals, as well as monoclonal gammopathy of undetermined significance (MGUS)...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137262/disease-spectrum-of-abnormal-serum-free-light-chain-ratio-and-its-diagnostic-significance
#4
Bin Xu, Yi Tang, Jianfeng Zhou, Peiling Zhang, Huijun Li
Objective: To analyze the spectrum of abnormal serum free light chain ratio (sFLC κ/λ ratio), and to redefine the range of sFLC κ/λ ratio, so as to achieve hierarchical diagnosis of diseases with abnormal sFLC κ/λ ratio, resulting in the increased sensitivity and specificity in the diagnosis of monoclonal plasma diseases. Methods: Enrolled 1,340 patients with abnormal sFLC κ/λ ratio (<0.26 or >1.65) were grouped: (1) group A: malignant plasma diseases; (2) group B: monoclonal gammopathies of undetermined significance (MGUS); (3) group C: reactive plasma diseases...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29098000/pro-inflammatory-state-in-monoclonal-gammopathy-of-undetermined-significance-and-in-multiple-myeloma-is-characterized-by-low-sialylation-of-pathogen-specific-and-other-monoclonal-immunoglobulins
#5
Adrien Bosseboeuf, Sophie Allain-Maillet, Nicolas Mennesson, Anne Tallet, Cédric Rossi, Laurent Garderet, Denis Caillot, Philippe Moreau, Eric Piver, François Girodon, Hélène Perreault, Sophie Brouard, Arnaud Nicot, Edith Bigot-Corbel, Sylvie Hermouet, Jean Harb
Multiple myeloma (MM) and its pre-cancerous stage monoclonal gammopathy of undetermined significance (MGUS) allow to study immune responses and the chronology of inflammation in the context of blood malignancies. Both diseases are characterized by the production of a monoclonal immunoglobulin (mc Ig) which for subsets of MGUS and MM patients targets pathogens known to cause latent infection, a major cause of inflammation. Inflammation may influence the structure of both polyclonal (pc) Ig and mc Ig produced by malignant plasma cells via the sialylation of Ig Fc fragment...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29079358/monoclonal-protein-reference-change-value-as-determined-by-gel-based-serum-protein-electrophoresis
#6
Mina Salamatmanesh, Christopher R McCudden, Arleigh McCurdy, Ronald A Booth
INTRODUCTION: The International Myeloma Working Group recommendations for monitoring disease progression or response include quantitation of the involved monoclonal immunoglobulin. They have defined the minimum change criteria of ≧25% with an absolute change of no <5g/L for either minimal response or progression. Limited evidence is available to accurately determine the magnitude of change in a monoclonal protein to reflect a true change in clinical status. Here we determined the analytical and biological variability of monoclonal proteins in stable monoclonal gammopathy of undetermined significance (MGUS) patients...
October 24, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/29053158/prevalence-of-myeloma-precursor-state-monoclonal-gammopathy-of-undetermined-significance-in-12372-individuals-10-49-years-old-a-population-based-study-from-the-national-health-and-nutrition-examination-survey
#7
O Landgren, B I Graubard, S Kumar, R A Kyle, J A Katzmann, K Murata, R Costello, A Dispenzieri, N Caporaso, S Mailankody, N Korde, M Hultcrantz, T M Therneau, D R Larson, J R Cerhan, S V Rajkumar
We studied the prevalence of monoclonal gammopathy of undetermined significance (MGUS) in younger individuals, age 10-49 years, using samples from the National Health and Nutritional Examination Survey (NHANES) III. NHANES prevalence rates were standardized to the 2000 US total population. Among 12 372 individuals (4073 blacks, 4146 Mexican-Americans, 3595 whites, and 558 others), MGUS was identified in 63 persons (0.34%, 95% CI 0.23-0.50). The prevalence of MGUS was significantly higher in blacks (0.88%, 95% CI 0...
October 20, 2017: Blood Cancer Journal
https://www.readbyqxmd.com/read/29050213/serum-protein-fingerprinting-by-pea-immunoassay-coupled-with-a-pattern-recognition-algorithms-distinguishes-mgus-and-multiple-myeloma
#8
Petra Schneiderova, Tomas Pika, Petr Gajdos, Regina Fillerova, Pavel Kromer, Milos Kudelka, Jiri Minarik, Tomas Papajik, Vlastimil Scudla, Eva Kriegova
Serum protein fingerprints associated with MGUS and MM and their changes in MM after autologous stem cell transplantation (MM-ASCT, day 100) remain unexplored. Using highly-sensitive Proximity Extension ImmunoAssay on 92 cancer biomarkers (Proseek Multiplex, Olink), enhanced serum levels of Adrenomedullin (ADM, Pcorr= .0004), Growth differentiation factor 15 (GDF15, Pcorr= .003), and soluble Major histocompatibility complex class I-related chain A (sMICA, Pcorr= .023), all prosurvival and chemoprotective factors for myeloma cells, were detected in MM comparing to MGUS...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29036799/hemorheological-parameters-in-monoclonal-gammopathy-of-undetermined-significance-mgus
#9
G Caimi, E Hopps, M Carlisi, M Montana, E Gallà, R Lo Presti, S Siragusa
There is scarcity of information about the hemorheological pattern in subjects with Monoclonal Gammopathy of Undetermined Significance (MGUS). This preliminary research is focused on the behaviour of whole-blood and plasma viscosity, haematocrit and erythrocyte deformability in the above clinical condition. We enrolled 21 MGUS subjects (10 women and 11 men; mean age 66.4 ± 11.6 years). In fasting venous blood we examined whole-blood and plasma viscosity at high and low shear rates, haematocrit, the ratios between whole-blood viscosity (at high and low shear rate) and haematocrit × 100, the ratio between plasma viscosity at low and high shear rate, and the erythrocyte deformability expressed as elongation index...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29034435/advances-in-the-treatment-of-paraproteinemic-neuropathy
#10
REVIEW
Eduardo Nobile-Orazio, Mariangela Bianco, Andrea Nozza
Purpose of review Several advances have been made on the pathogenesis and therapy of neuropathies associated with paraproteinemia (monoclonal gammopathy). It is important for the neurologist to understand the pathogenetic relevance of this association especially when the hematological disease does not require per se any therapy. Recent findings Treatment of the neuropathy in patients with malignant paraproteinemia is mainly addressed by the hematologist while the neurologist is mainly involved in the initial diagnosis and in deciding whether the neuropathy is caused by the disease or by the chemotherapy used for the disease...
October 16, 2017: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/29031125/low-protein-z-levels-in-patients-with-plasma-cell-neoplasms-are-inversely-correlated-with-il-6-levels
#11
O Gutwein, N Rahimi-Levene, K Herzog-Tzarfati, O Garach-Jehoshua, A Nagler, M Izak, M Koren-Michowitz
Patients with multiple myeloma (MM) have an increased thrombotic risk, but pathogenesis remains uncertain. Low levels of Protein Z (PZ), a vitamin K-dependent plasma protein, are associated with venous as well as arterial thrombosis. The purpose of this study was to analyze PZ levels in patients with plasma cell neoplasms. PATIENTS AND METHODS: The study consisted of 64 plasma cells neoplasm patients and 42 healthy individuals. Clinical investigations included measurement of plasma PZ and IL-6 levels...
November 2017: Leukemia Research
https://www.readbyqxmd.com/read/29027517/-unexpected-symptoms-of-monoclonal-gammopathy
#12
P M Smit, A C Abrahams, R G E Schutgens, N C Notermans, M C Minnema
Monoclonal gammopathy of undetermined significance (MGUS) is a common haematological disorder characterized by the presence of a monoclonal protein (M-protein). MGUS is considered an asymptomatic 'innocent' pre-malignant precursor condition of - mostly - multiple myeloma, without indication for treatment. We present three cases illustrating that MGUS can lead to serious problems. The first patient, a 51-year-old female, presented with polyneuropathy due to anti-MAG antibodies related to IgM MGUS. The second patient, a 37-year-old female, presented with proteinuria due to immunotactoid glomerulopathy caused by renal monoclonal IgG deposition associated with MGUS...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29021514/characteristics-and-prognosis-of-patients-with-immunoglobulin-m-monoclonal-gammopathy
#13
Hiroaki Tanaka, Yukie Sakuma, Hideki Ikeda, Ryo Shimizu, Yasumasa Sugita, Rie Iwai
Many patients with immunoglobulin M (IgM) monoclonal gammopathy remain asymptomatic and, consequently, untreated; however, few studies have evaluated the clinical course and prognosis of these patients. Using the screening procedures at our hospital, 74 patients with IgM monoclonal gammopathy were selected. We excluded 11 patients in whom the treatment for lymphoid neoplasms had been initiated at the time of IgM monoclonal protein detection. The remaining 63 patients were considered to be the patient population with IgM MGUS and asymptomatic WM, and were analyzed...
2017: Journal of Clinical and Experimental Hematopathology: JCEH
https://www.readbyqxmd.com/read/28978808/monoclonal-igg-in-mgus-and-multiple-myeloma-targets-infectious-pathogens
#14
Adrien Bosseboeuf, Delphine Feron, Anne Tallet, Cédric Rossi, Cathy Charlier, Laurent Garderet, Denis Caillot, Philippe Moreau, Marina Cardó-Vila, Renata Pasqualini, Wadih Arap, Alfreda Destea Nelson, Bridget S Wilson, Hélène Perreault, Eric Piver, Pierre Weigel, François Girodon, Jean Harb, Edith Bigot-Corbel, Sylvie Hermouet
Subsets of mature B cell neoplasms are linked to infection with intracellular pathogens such as Epstein-Barr virus (EBV), hepatitis C virus (HCV), or Helicobacter pylori. However, the association between infection and the immunoglobulin-secreting (Ig-secreting) B proliferative disorders remains largely unresolved. We investigated whether the monoclonal IgG (mc IgG) produced by patients diagnosed with monoclonal gammopathy of undetermined significance (MGUS) or multiple myeloma (MM) targets infectious pathogens...
October 5, 2017: JCI Insight
https://www.readbyqxmd.com/read/28943951/recurrent-alterations-of-the-ww-domain-containing-oxidoreductase-gene-spanning-the-common-fragile-site-fra16d-in-multiple-myeloma-and-monoclonal-gammopathy-of-undetermined-significance
#15
Hiroshi Handa, Yoshiko Sasaki, Hikaru Hattori, Lobna Alkebsi, Tetsuhiro Kasamatsu, Takayuki Saitoh, Takeki Mitsui, Akihiko Yokohama, Norifumi Tsukamoto, Morio Matsumoto, Hirokazu Murakami
The putative tumor suppressor gene WW domain containing oxidoreductase (WWOX) spans a common fragile site (CFS) on chromosome 16q23.3. CFSs are regions of profound genomic instability and sites for genomic deletions in cancer cells. Therefore, WWOX is structurally altered in diverse nonhematological cancer types. However, the function of WWOX in hematological tumor types, including multiple myeloma (MM) and monoclonal gammopathy of undetermined significance (MGUS) remains unclear. WWOX expression and methylation in patients with MM, MGUS, or noninvasive lymphoma (control) were analyzed using reverse transcription- and methylation specific-polymerase chain reaction analysis...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28943924/network-based-analysis-of-the-molecular-mechanisms-of-multiple-myeloma-and-monoclonal-gammopathy-of-undetermined-significance
#16
Zhi Liu, Jing Huang, Qi Zhong, Yanling She, Ruimin Ou, Cheng Li, Rui Chen, Mengdong Yao, Qing Zhang, Shuang Liu
The present study aimed to reveal the molecular mechanisms of multiple myeloma (MM) and monoclonal gammopathy of undetermined significance (MGUS). This was a secondary study on microarray dataset GSE80608, downloaded from the Gene Expression Omnibus database, which included 10 control samples, 10 MGUS samples and 10 MM samples. Differentially expressed genes (DEGs) were identified between control and MGUS samples, and between control and MM samples. A protein-protein interaction (PPI) network was built for studying the interactions between the DEGs...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28915587/expression-and-release-of-glucose-regulated-protein-78-grp78-in-multiple-myeloma
#17
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...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28903575/diagnostic-tools-of-waldenstr%C3%A3-ms-macroglobulinemia-best-possibilities-for-non-invasive-and-long-term-disease-monitoring
#18
K Growkova, Z Kufová, T Sevcikova, J Filipová, M Kascak, T Jelínek, S Grosicki, A Barchnicka, Ľ Roziaková, M Mistrík, M Simicek, R Hájek
Waldenströms macroglobulinemia (WM) is a B-cell malignancy characterized by high level of monoclonal immunoglobulin M (IgM) paraprotein in blood serum and associated with the bone marrow infiltration by malignant cells with lymphoplasmacytic differentiation. WM remains incurable advances in therapy. Most of WM cases are associated with a somatic point mutation L265P in MYD88. Significantly higher risk of progression from the IgM monoclonal gammopathy of undetermined significance (IgM MGUS) to WM for patients with mutated MYD88 gene suggests that this mutation is an early oncogenic event and plays a central role in development of malignant clones...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28903571/asymptomatic-and-treatment-requiring-multiple-myeloma-data-from-the-czech-registry-of-monoclonal-gammopathies
#19
L Brozova, J Jarkovský, L Pour, J Minárik, A Jungová, E Gregora, I Spicka, V Maisnar, R Hájek
BACKGROUND: Monoclonal gammopathy of undetermined significance (MGUS) and smouldering multiple myeloma (SMM) are premalignant stages of multiple myeloma (MM). MM is a malignancy of plasma cells, which is associated with a median overall survival of 5 to 7 years. MM accounts for approximately 10% of hematological malignancies. PATIENTS AND METHODS: Descriptive analysis of data from 19 Czech centres collected in the Registry of Monoclonal Gammopathies (RMG) was performed...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28903570/czech-registry-of-monoclonal-gammopathies-technical-solution-data-collection-and-visualisation
#20
L Brozova, D Schwarz, I Snabl, J Kalina, B Pavlickova, M Komenda, J Jarkovský, P Němec, D Horinek, Z Stefanikova, L Pour, R Hájek, V Maisnar
BACKGROUND: The Registry of Monoclonal Gammopathies (RMG) was established by the Czech Myeloma Group in 2007. RMG is a registry designed for the collection of clinical data concerning diagnosis, treatment, treatment results and survival of patients with monoclonal gammopathies. Data on patients with monoclonal gammopathy of undetermined significance (MGUS), Waldenström macroglobulinaemia (WM), multiple myeloma (MM) or primary AL ("amyloid light-chain") amyloidosis are collected in the registry...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
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