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IgG myeloma

Natalia Ermak, Thao Nguyen-Khoa, Marie-Alexandra Alyanakian
The diagnostics and follow-up of monoclonal gammopathies such as multiple myeloma require precise analysis of the monoclonal component as well as the other immunoglobulins isotypes, which might be limited by the sensitivity of standard laboratory methods. New serum biomarkers were developed for routine practice in the last decades, such as the free light chain assays and more recently the heavy/light chain assay<strike>s</strike>. Studies have shown that serum free light chain measurement was useful in the identification and follow-up of pauci or nonsecretory myeloma, free light-chain multiple myeloma and AL amyloidosis...
October 1, 2016: Annales de Biologie Clinique
Jonathan S Harrison, Shellaine R Frazier, Dianne D McConnell, Senan John Yasar, Nataliya Melnyk, Gratian Salaru
Acquired coagulopathies are common; uncommonly, adsorption of coagulation factors from the circulation into the tissues by pathologic amyloid exceeds the body's ability to produce factor and results in acquired factor deficiency. When amyloidosis does cause a coagulopathy, it is most often acquired factor X deficiency, but there are rare reports of amyloidosis being associated with other acquired factor deficiencies. We investigated a case of a severe bleeding diathesis, the cause of which was combined acquired factor V deficiency and concomitant acquired von Willebrand syndrome...
September 24, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
Kazunori Murata, Samuel I McCash, Brittany Carroll, Alexander M Lesokhin, Hani Hassoun, Nikoletta Lendvai, Neha S Korde, Sham Mailankody, Heather J Landau, Guenther Koehne, David J Chung, Sergio A Giralt, Lakshmi V Ramanathan, Ola Landgren
OBJECTIVES: To characterize the effect of three humanized IgG κ monoclonal antibodies (daratumumab, isatuximab, and elotuzumab) on the interpretation of results generated by protein electrophoresis, immunofixation, free light chain, and heavy/light chain assays performed on human serum. METHODS: Healthy volunteer serum and serum from multiple myeloma patients were supplemented with clinically relevant concentrations of each of the three monoclonal antibodies. These specimens then underwent analysis via serum protein electrophoresis, immunofixation, serum free light chain quantification, heavy/light chain quantification, total IgG, and total protein...
September 21, 2016: Clinical Biochemistry
Elaine J Hutchison, Josephine A Taverna, Qi Yu, Andrew M Yeager
In contrast to anaemia, polycythaemia is a distinctly uncommon finding in patients with multiple myeloma. We describe the presence of otherwise unexplained polycythaemia in a 57-year-old Caucasian man who was found to have IgG κ multiple myeloma. After treatment of myeloma, the polycythaemia resolved. We reviewed previous reports of polycythaemia associated with multiple myeloma and discuss potential pathophysiological mechanisms that link these 2 conditions.
2016: BMJ Case Reports
Guang Yin, Zhen Cheng, Cai-Hong Zeng, Zhi-Hong Liu
BACKGROUND: C3 glomerulonephritis (C3 GN) is a recently defined entity characterized by predominant C3 deposition in glomeruli due to abnormal activation of the alternative pathway of complement system. C3 GN has been reported to be associated with several systemic diseases. However, the association between C3 GN and multiple myeloma (MM) has not been well established. METHODS: We herein describe a case presenting with C3 GN on top of MM. RESULTS: A 64-year-old Chinese female presented with gross hematuria, renal dysfunction, anemia, and weight loss...
September 2016: Medicine (Baltimore)
Boyan Fang, Andrew McKeon, Shannon R Hinson, Thomas J Kryzer, Sean J Pittock, Allen J Aksamit, Vanda A Lennon
Importance: A novel astrocytic autoantibody has been identified as a biomarker of a relapsing autoimmune meningoencephalomyelitis that is immunotherapy responsive. Seropositivity distinguishes autoimmune glial fibrillary acidic protein (GFAP) meningoencephalomyelitis from disorders commonly considered in the differential diagnosis. Objective: To describe a novel IgG autoantibody found in serum or cerebrospinal fluid that is specific for a cytosolic intermediate filament protein of astrocytes...
September 12, 2016: JAMA Neurology
Maria Maier, Dietmar Reusch, Cees Bruggink, Patrick Bulau, Manfred Wuhrer, Michael Mølhøj
High-performance anion-exchange chromatography (HPAEC) coupled to pulsed amperometric detection (PAD) is a highly sensitive method for the analysis of oligosaccharides without the need for prior derivatization. However, the method suffers from the lack of chemical information with peak assignments based on the retention times of authentic standards or known peaks of reference materials. Here we applied HPAEC coupled on-line with electrospray ion trap mass spectrometry (HPAEC-MS) using a prototype mini-bore (1mm I...
October 15, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Joonhong Park, Dong Wook Jekarl, Suk Young Park, Soyoung Shin
No abstract text is available yet for this article.
September 5, 2016: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
Miyoung Kim, Young Su Ju, Eun Jin Lee, Hee Jung Kang, Han Sung Kim, Hyoun Chan Cho, Hyo Jung Kim, Jung Ah Kim, Dong Soon Lee, Young Kyung Lee
BACKGROUND: We comprehensively profiled cytogenetic abnormalities in multiple myeloma (MM) and analyzed the relationship between cytogenetic abnormalities of undetermined prognostic significance and established prognostic factors. METHODS: The karyotype of 333 newly diagnosed MM cases was analyzed in association with established prognostic factors. Survival analysis was also performed. RESULTS: MM with abnormal karyotypes (41.1%) exhibited high international scoring system (ISS) stage, frequent IgA type, elevated IgG or IgA levels, elevated calcium levels, elevated creatine (Cr) levels, elevated β2-microglobulin levels, and decreased Hb levels...
November 2016: Annals of Laboratory Medicine
János Jakó, László Szerafin
INTRODUCTION: In their previous work, the authors reported findings from 30 years on the incidence of hematological malignancies in Szabolcs-Szatmár-Bereg county, Hungary. Until now there are no other studies on this topic available in Hungary. AIM: Detailed analysis of epidemiologic features of patients with myeloma. METHOD: During a 33-year period (between January 1, 1983 and December 31, 2015) 4521 adult patients with hematologic malignancies were recorded in the leukaemia/lymphoma registry of Szabolcs-Szatmár-Bereg county...
August 2016: Orvosi Hetilap
John R Mills, Mindy C Kohlhagen, Surendra Dasari, Patrick M Vanderboom, Robert A Kyle, Jerry A Katzmann, Maria A V Willrich, David R Barnidge, Angela Dispenzieri, David L Murray
BACKGROUND: Electrophoretic separation of serum and urine proteins has played a central role in diagnosing and monitoring plasma cell disorders. Despite limitations in resolution and analytical sensitivity, plus the necessity for adjunct methods, protein gel electrophoresis and immunofixation electrophoresis (IFE) remain front-line tests. METHODS: We developed a MALDI mass spectrometry-based assay that was simple to perform, automatable, analytically sensitive, and applicable to analyzing the wide variety of monoclonal proteins (M-proteins) encountered clinically...
October 2016: Clinical Chemistry
Hao Shi, Zijin Chen, Jingyuan Xie, Nan Chen
BACKGROUND: Multiple myeloma (MM) is a clonal B-cell malignancy of the bone marrow. Renal impairment is a common complication of MM. So far, there is no systematic overview of MM-induced kidney disease in China. SUMMARY: The incidence of MM is 0.6/100,000 in China. Twenty-four, 19.7, and 30.8% of all patients with MM had renal insufficiency [defined by serum creatinine (Scr) ≥2 mg/dl] at diagnosis in China mainland, Hong Kong and Taiwan, respectively. Novel criteria based on the estimated glomerular filtration rate measurements are recommended for the assessment of renal function in patients with MM with stabilized Scr...
March 2016: Kidney Diseases
R X Ma, Z L Li, T Wang, G H Wu, Y L Wu
OBJECTIVE: To analyze the clinical features of multiple myeloma (MM) with renal insufficiency as the initial manifestation, and to improve the level of clinical diagnosis of MM, and reducing misdiagnosis of this disease. METHODS: To retrospectively analyze the clinical data of 140 patients with MM, who were admitted in our Department of Nephrology and Hematology. They were diagnosed as MM by bone marrow aspiration biopsy. The patients were divided into renal insufficiency group and normal renal function group, based on the criterion of serum creatinine >177 μmol/L...
July 2016: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
Harumi Ito, Takafumi Miyake, Kazuo Nakashima, Yuji Ito, Chisato Tanahashi, Yasuko Uchigata
In 1981, a 48-year old man was diagnosed with insulin autoimmune syndrome. In 2005, he experienced a substantial increase in his monoclonal insulin antibody levels; in 2006 and 2007, serum monoclonal gammopathy and an 11% marrow plasmacyte ratio were confirmed. In 2012, asymptomatic multiple myeloma was diagnosed based on an increased γ-globulin fraction and serum M-protein (IgG) levels. The insulin antibody binding rate was 75.4% in 2005 and 78.8% in 2012. In 2012, he was hospitalized for ileus and died. Autopsy identified multiple myeloma and no endocrinological tumors in the pancreas...
2016: Internal Medicine
Aaron Seth Rosenberg, Scott Bainbridge, Roma Pahwa, Ishwarlal Jialal
OBJECTIVES: Recently monoclonal antibody therapy has been introduced in the treatment of multiple Myeloma (MM). One such efficacious therapy is the anti-CD38 monoclonal antibody, daratumumab (Dara). Since it is an Ig-G-kappa it can interfere with both the serum protein electrophoresis and immunofixation electrophoresis (IFE). The free light chain (FLC) assay is also useful in the diagnosis and therapeutic monitoring of MM. Hence we tested the effect of Dara on the FLC assay. METHODS: 30 serum samples from patients with known IgG-kappa (n=20) and non-IgG-kappa M -proteins (n=10) were spiked with Dara at a final concentration of 1...
October 2016: Clinical Biochemistry
Bijnya Birajita Panda, Sucheta Parija, Jyotiranjan Mallick, Susanta Pujahari
Acquired oculomotor nerve palsy has varied aetiologies like vascular (diabetes, heart disease, atherosclerosis and posterior communicating artery aneurysm), space occupying lesions or tumours, inflammation, infection, trauma, demyelinating disease like Multiple sclerosis, autoimmune disorders such as Myasthenia gravis, postoperatively as a complication of neurosurgery, cavernous sinus thrombosis etc. Cranial Nerve palsies as one of the first symptoms of multiple myeloma have been reported sparsely in literature...
May 2016: Journal of Clinical and Diagnostic Research: JCDR
Aparna Harbhajanka, Arlen Brickman, Ji-Weon Park, Vijaya B Reddy, Pincas Bitterman, Paolo Gattuso
BACKGROUND: Myelomatous effusions (ME) of the serous cavities are rare. Identification of the atypical plasma cells in the body fluids may be critical for prognostic considerations. METHODS: We retrospectively reviewed clinicopathologic findings of 21 serous effusion specimens from 13 cases of ME including 10 pleural, two concurrent pleural and pericardial, and one peritoneal from 1994 to 2014. RESULT: All 13 patients had bone marrow biopsy-proven plasma cell myeloma (PCM), including one plasmablastic-variant, one anaplastic-variant and one plasma cell leukemia...
September 2016: Diagnostic Cytopathology
Parul Arora, Sanjeev Kumar Gupta, Nabhajit Mallik, Reena Mittal, Om Dutt Sharma, Lalit Kumar
Plasma cell myeloma is a multifocal plasma cell neoplasm associated with increased monoclonal protein in serum and/or urine. Pleural effusions in patients with myeloma are uncommon (6 %). However, effusions due to direct infiltration of the pleura by plasma cells (myelomatous pleural effusion) are extremely rare (<1 %) and usually seen with IgA myeloma. The diagnosis of such cases requires pleural fluid cytology, electrophoresis or pleural biopsy. We present a case of myelomatous pleural effusion diagnosed using flow cytometry immunophenotyping in addition to the pleural fluid cytology...
June 2016: Indian Journal of Hematology & Blood Transfusion
Raphael Cohen, Camille Boulagnon, Florent Ehrhard, Marie-Danièle Diebold, Yohan Nguyen, Aurélien Giltat, Anthony Corchia, Bernard Pignon, Firouzé Bani-Sadr
Plasma cell infiltration of the liver has been described in about 45% of patient with multiple myeloma in autopsy review; however, it is usually not associated with significant liver dysfunction. Indeed, only rare cases of massive plasma cell infiltration leading to non-obstructive cholestasis and hepatic failure have been described. Here, we report a case with a history of 8 years of MM with extensive liver fibrosis and portal hypertension with no other evidence aetiology unless massive plasma cell infiltration who presented a significant regression of both biological liver abnormalities and liver stiffness after ten months of chemotherapy concomitantly to a significant decrease of the IgG serum monoclonal band...
June 21, 2016: Clinics and Research in Hepatology and Gastroenterology
Rebecca L King, Wilson I Gonsalves, Stephen M Ansell, Patricia T Greipp, Lori A Frederick, David S Viswanatha, Rong He, Robert A Kyle, Morie A Gertz, Prashant Kapoor, William G Morice, Matthew T Howard
OBJECTIVES: Lymphoplasmacytic lymphoma (LPL) with non-immunoglobulin M (IgM) paraproteinemia remains poorly understood. The goal of this study was to investigate the clinicopathologic features of LPL in the bone marrow in patients with immunoglobulin G (IgG) or immunoglobulin A (IgA) paraproteins and evaluate MYD88 L265P mutation status to determine the relationship of these cases to Waldenström macroglobulinemia (WM). METHODS: Bone marrows from LPL cases with IgG or IgA paraproteins diagnosed between January 1, 2007, and June 30, 2014, were retrieved from the clinical archive...
June 2016: American Journal of Clinical Pathology
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