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Etiological study of polyclonal hypergammaglobulinemia in a French cohort of hospitalized patients and proposal of a diagnostic aid algorithm : Short title: polyclonal hypergammaglobulinemia in a French cohort of hospitalized patients.
Sci Rep
December 2024
Service de Médecine Interne et Immunologie Clinique, Groupe Hospitalier Saint-André, CHU de Bordeaux, 1 rue Jean Burguet, Bordeaux, F-33000, France.
Serum protein electrophoresis can sometimes reveal polyclonal hypergammaglobulinemia. This electrophoretic abnormality can be caused by a variety of conditions and can be difficult to investigate. We sought to investigate screening practices in patients with hypergammaglobulinemia in order to establish diagnostic guidance strategies.
View Article and Find Full Text PDFMutational Landscape of Bone Marrow CD19 and CD138 Cells in Waldenström Macroglobulinemia (WM) and IgM Monoclonal Gammopathy of Undetermined Significance (IgM MGUS).
Cancer Med
December 2024
Niguarda Hospital, Department of Hematology and Oncology, Milano, Italy.
Background: Despite recurrent and activating mutations, including MYD88, CXCR4, ARID1A, KMT2D, and CD79B were identified, the genetic basis for Waldenström's Macroglobulinemia (WM) and the risk of progression of IgM MGUS to WM remain to be fully elucidated.
Methods: We investigated the mutation status of WM (n = 8), sWM (n = 7), and IgM MGUS (n = 5) patients, by performing high-throughput targeted AmpliSeq NGS on 117 target genes. Specifically, we analyzed the CD19+ cells from 15 WM/sWM patients and five IgM MGUS patients.
The significance of free light-chain ratio in light-chain monoclonal gammopathy of undetermined significance: a flow cytometry sub-study of the iStopMM screening study.
Blood Cancer J
December 2024
Faculty of Medicine, University of Iceland, Reykjavík, Iceland.
Light-chain (LC) monoclonal gammopathy of undetermined significance (MGUS) is a precursor of multiple myeloma (MM) and related conditions. LC-MGUS is characterized by free light-chain (FLC) levels outside defined reference intervals, indirectly indicating underlying plasma cell (PC) monoclonality. Next-generation flow cytometry (NGF) was used to evaluate clonal PC presence in bone marrow (BM) samples from individuals with LC-MGUS in the iStopMM study, aiming to assess the predictive value of the FLC ratio for clonal PC presence and its prognostic implications.
View Article and Find Full Text PDF[IgA vasculitis with necrosis of the small intestine secondary to monoclonal gammopathy of renal significance: A case report].
Beijing Da Xue Xue Bao Yi Xue Ban
December 2024
Department of Rheumatology and Immunology, Peking University Shougang Hospital, Beijing 100144, China.
Monoclonal gammopathy of undetermined significance combined with renal damage is named monoclonal gammopathy of renal significance. There are few reports about IgA vasculitis in patients with monoclonal gammopathy of undetermined significance. Here, we report a case of monoclonal gammopathy of renal significance, who had manifestations of IgA vasculitis, including purpura, gastrointestinal bleeding and joint pain.
View Article and Find Full Text PDFCryoglobulinemia concurrent with Leishmania infantum infection in a dog and its interference with two automated hematology analyzers.
Vet Clin Pathol
December 2024
Servei d'Hematologia Clínica Veterinària, Departament de Medicina i Cirurgia Animals, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Spain.
Article Synopsis
- * The blood tests showed issues like marked thrombocytosis and unexpected findings of cryoglobulins, leading to complex hematological results that were partially resolved by warming the blood sample.
- * Additional testing revealed the dog had a Leishmania infantum infection, marked hyperproteinemia, and mild splenomegaly, highlighting the unique presentation of monoclonal hypergammaglobulinemia and cryoglobulinemia in a dog with this infection.
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