IgA-producing lymphoplasmacytic lymphoma carrying the chromosomal abnormality t(8;14).

IgA-producing lymphoplasmacytic lymphoma carrying the chromosomal abnormality t(8;14). J Clin Exp Hematop. 2019 Aug 08;: Authors: Gotoh Y, Aoyama Y, Tsunemine H, Idei Y, Mori A, Kodaka T, Iba S, Tomita A, Itoh T, Takahashi T Abstract IgA-producing lymphoplasmacytic lymphoma (LPL) is rare and IgH/c-myc translocation is rare in LPL. This is the first report of a case of IgA-producing LPL carrying t(8;14). An 86-year-old woman presented inguinal and intra-abdominal lymph node swelling, and lytic bone lesions in the lumbar vertebrae. A diagnosis of IgA-producing LPL was immunohistochemically made by inguinal lymph node biopsy. The serum IgA level was 1,180 mg/dL, which was revealed to be composed of IgA-λ monoclonal protein. Bone marrow chromosomal analysis demonstrated a complex abnormal karyotype, including t(8;14)(q24;q32), which was confirmed by FISH analysis. Abnormal lymphocytes positive for CD19, CD20, cyIgA, and cyλ were detected on flow cytometry analysis of marrow cells. Best supportive care was selected because of dementia and refractory urinary tract infection. Circulating lymphoplasmacytic cells with the same phenotype and karyotype were observed, and increased in number. The aggressive clinical course, including lytic bone lesions, may have been due to IgH/c-myc translocation or the nature of IgA-producing LPL. PMID: 31391404 [PubMed - as supplied by publisher]
Source: Journal of Clinical and Experimental Hematopathology : JCEH - Category: Hematology Tags: J Clin Exp Hematop Source Type: research