Purpose Of Review: The past decade in LGL leukemia research has seen increased pairing of clinical data with molecular markers, shedding new insights on LGL leukemia pathogenesis and heterogeneity. This review summarizes the current standard of care of LGL leukemia, updates from clinical trials, and our congruent improved understanding of LGL pathogenesis.
Recent Findings: Various clinical reports have identified associations between stem, bone marrow, and solid organ transplants and incidence of LGL leukemia. There is also a potential for underdiagnosis of LGL leukemia within the rheumatoid arthritis patient population, emphasizing our need for continued study. Preliminary results from the BNZ-1 clinical trial, which targets IL-15 along with IL-2 and IL-9 signaling pathways, show some evidence of clinical response. With advances in our understanding of LGL pathogenesis from both the bench and the clinic, exciting avenues for investigations lie ahead for LGL leukemia.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7234906 | PMC |
http://dx.doi.org/10.1007/s11899-020-00565-6 | DOI Listing |
Z Rheumatol
January 2025
Medizinische Klinik 2, Schwerpunkt Rheumatologie/Klinische Immunologie, Universitätsklinikum Würzburg, Oberdürrbacher Str. 6, 97080, Würzburg, Deutschland.
Neutropenia in rheumatoid arthritis (RA) is a problem that often needs to be addressed. Side effects of basic antirheumatic treatment, infections or substrate deficiencies are common causes; however, T‑cell large granular lymphocytic (T-LGL) leukemia, a mature T‑cell neoplasm, can also lead to autoimmune cytopenia. The T‑LGL leukemia can be associated not only with RA but also with other autoimmune diseases or neoplasms.
View Article and Find Full Text PDFIntern Med
January 2025
Department of Hematology, Suita Municipal Hospital, Japan.
A 51-year-old woman with persistent proliferation of natural killer (NK) cells in her peripheral blood was diagnosed with NK-large granular lymphocytic leukemia (NK-LGLL). During follow-up, computed tomography revealed multiple infiltrative pulmonary lesions. A flow cytometric analysis of bronchoalveolar lavage fluid showed infiltration of NK cells, resulting in a diagnosis of pulmonary infiltration by NK-LGLL.
View Article and Find Full Text PDFDiscov Oncol
December 2024
Laboratory of Hematology-Oncology, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, MI, Italy.
The clinical presentation of T-cell large granular lymphocytic leukemia (T-LGLL) is extremely variable: 30% of patients have neutropenia with no associated symptoms, others present with bacterial infections and sepsis may occur. Tools to predict patient outcome are lacking. Stemming from preliminary results obtained by single cell-RNAseq we investigated by qPCR HSP and IFIT gene families in 27 LGLL patients (23T-LGLL and 4 NK-LGLL), including 11 with neutropenia and/or thrombocytopenia and 16 asymptomatic for the disease.
View Article and Find Full Text PDFArthritis Res Ther
December 2024
Medizinisches Versorgungszentrum Rheumatologie und Autoimmunmedizin Hamburg GmbH, Mönckebergstraße 27, D-20095, Hamburg, Germany.
Background: Clonal T cell populations are frequently detected in patients with rheumatic diseases. The relevance of this finding is often uncertain, as the clinical spectrum can range from being asymptomatic to T cell leukemia. Former studies suggested that certain anti-rheumatic drugs might influence the course of the clonal T cell populations.
View Article and Find Full Text PDFBackground: Chronic NK-cell lymphoproliferative disease (CLPD-NK) is a very rare lymphoproliferative disorder in which patients often have an elevated lymphocyte population without clinical symptoms.
Methods: In this particular case, a middle-aged woman presented with a consistent elevation in her lymphocyte proportion over a span of four consecutive years during physical examinations, without manifesting any other notable clinical symptoms. The underlying cause of this phenomenon was ultimately identified through a comprehensive evaluation that encompassed peripheral blood cell morphology analysis, lymphocyte subset profiling, and peripheral blood immunophenotyping.
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