Background: Monoclonal B-cell lymphocytosis is classified as 'high-count or clinical' monoclonal B-cell lymphocytosis and 'low-count or population' monoclonal B-cell lymphocytosis. Previously, 167 first-degree relatives pertaining to sporadic (non-familial) chronic lymphocytic leukemia families were studied and the presence of seven monoclonal B-cell lymphocytosis individuals was reported.
Objective: The aim of this report is to describe the outcomes of five of the original monoclonal B-cell lymphocytosis individuals.
Methods: Flow cytometry analysis was performed on mononuclear cells previously isolated from peripheral blood samples. A strategy of sequential gating designed to identify the population of CD19(+)/CD5(+) B-lymphocytes was used and, subsequently, the monoclonal B-cell lymphocytosis cells were characterized by the CD20(weak)/CD79b(weak/negative) phenotype.
Results: The monoclonal B-cell lymphocytosis clone showed consistent stability over time with little variations in size. After a median follow-up of 7.6 years, none of the five monoclonal B-cell lymphocytosis individuals progressed to chronic lymphocytic leukemia or other B-cell lymphoproliferative disease.
Conclusions: The data of this study suggest that chronic lymphocytic leukemia-like monoclonal B-cell lymphocytosis detected in the context of sporadic chronic lymphocytic leukemia families is not prone to clinical evolution and could be just a sign of immune senescence.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4685047 | PMC |
| http://dx.doi.org/10.1016/j.bjhh.2015.05.006 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Early Immune Cell and Antibody Kinetics Following SARS-CoV-2 Vaccination in Healthy Adults and Low-Count Monoclonal B-Cell Lymphocytosis.
Int J Mol Sci
January 2025
Translational and Clinical Research Program, Cancer Research Center (IBMCC, Instituto de Biología Molecular y Celular del Cáncer, CSIC-University of Salamanca), Cytometry Service, NUCLEUS, 37007 Salamanca, Spain.
The early immune kinetics after SARS-CoV-2 vaccination remain poorly understood, particularly among individuals with low-count monoclonal B-cell lymphocytosis (MBL). We investigated the cellular and humoral kinetics in the blood of 50 non-MBL healthy donors (HD) vs. 16 MBL subjects after SARS-CoV-2 vaccination, who were subclassified according to their history of previous exposure to SARS-CoV-2 into SARS-CoV-2 naïve and previously infected subjects.
View Article and Find Full Text PDFInferior Outcomes of Fludarabine-Cyclophosphamide-Rituximab Chemotherapy in Korean Chronic Lymphocytic Leukemia Patients with Concurrent Thrombocytopenia and Anemia.
Biomedicines
January 2025
Department of Hematology, Catholic Hematology Hospital, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea.
: Anti-CD20 monoclonal antibodies combined with alkylator-based chemotherapy enhance survival in chronic lymphocytic leukemia (CLL). However, the risks of infection and bone marrow suppression may mean that new, targeted therapies are more appropriate for some patients than fludarabine-cyclophosphamide-rituximab (FCR). In the Republic of Korea, where insurance limits coverage to novel agents, FCR therapy should be carefully considered for patients with CLL.
View Article and Find Full Text PDFHuman naïve B cells recognize prepandemic influenza virus hemagglutinins.
Sci Immunol
January 2025
Ragon Institute of Mass General, MIT, and Harvard, Cambridge, MA 02139, USA.
Understanding the naïve B cell repertoire and its specificity for potential zoonotic threats, such as the highly pathogenic avian influenza (HPAI) H5Nx viruses, may allow prediction of infection- or vaccine-specific responses. However, this naïve repertoire and the possibility to respond to emerging, prepandemic viruses are largely undetermined. Here, we profiled naïve B cell reactivity against a prototypical HPAI H5 hemagglutinin (HA), the major target of antibody responses.
View Article and Find Full Text PDFAnti-Idiotypic Antibody as a Booster Vaccine Against Respiratory Syncytial Virus.
Vaccines (Basel)
January 2025
Infectious Diseases and Vaccine Research, Merck & Co., Inc., Rahway, NJ 07065, USA.
The respiratory syncytial virus (RSV) is a major cause of lower respiratory tract infections in children and adults. With nearly everyone infected by the age of five, there is an opportunity to develop booster vaccines that enhance B-cell immunity, promoting potent and broadly neutralizing antibodies. One potential approach involves using anti-idiotypic antibodies (anti-IDs) to mimic specific antigenic sites and enhance preexisting immunity in an epitope-specific manner.
View Article and Find Full Text PDFPOEMS Syndrome.
Presse Med
January 2025
Department of Hematology and Cellular Therapy, National Reference Center "AL Amyloidosis and Other Monoclonal Immunoglobulin Deposit Diseases, University Hospital of Limoges, Limoges, France.
POEMS syndrome (Polyneuropathy, Organomegaly, Endocrinopathy, Monoclonal Protein, Skin changes) is a syndrome that involves a monoclonal B-cell proliferation, most often plasmacytic, and a variable number of manifestations listed or not in the acronym. These manifestations include sclerotic bone lesions, plasmacytic Castleman disease, papillary edema, peripheral edema, ascites, thrombocytosis and/or polycythemia, venous and/or arterial thrombosis, and renal, pulmonary, and cardiac impairments . Diagnosis is often delayed due to the rarity of this entity and its clinical polymorphism, which can mimic other neurological disorders.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!