ArticleInternational journal of hematology2015
Two cases of concurrent development of essential thrombocythemia with chronic lymphocytic leukemia, one related to clonal B-cell lymphocytosis, tested by array comparative genomic hybridization.
Article in International journal of hematology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 6 citations in OpenAlex.
- CLL dedifferentiation to clonally related myeloid cells.Blood advances · 2020Article
- Chronic lymphocytic leukemia and myeloproliferative neoplasms concurrently diagnosed: clinical and biological characteristics.Leukemia & lymphoma · 2016Article
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Authors and funding
10 authors at 3 institutions in 2 countries.
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Abstract
We present two cases of concurrent development of essential thrombocythemia (ET) with chronic lymphocytic leukemia (CLL) and one related to clonal B-cell lymphocytosis (CBL). Both patients were referred for lymphocytosis and thrombocytosis. A bone marrow biopsy revealed infiltration of small, mature lymphocytes and megakaryocytic hyperplasia. Flow cytometric immunophenotyping and immunoglobulin (IG) gene clonality tests revealed clonal B lymphocytes. Both patients were positive for the JAK2 V617F mutation in whole bone marrow aspirate. The JAK2 V617F mutation was present in isolated B lymphocytes of patient 1, but not patient 2. Cytogenetics were normal in both patients. An array comparative genomic hybridization (CGH) analyses of B cells revealed a gain of 4q28.3, which is reported in non-Hodgkin's lymphoma, in patient 1, and deletion 22q11.22, which is associated with CLL, and a gain of Xp22.31 in patient 2. In both patients, B cells showed no myeloproliferative neoplasm (MPN)-specific genetic abnormalities. These results suggest that different oncogenic mechanisms in each cell lineage may underlie the concurrent development of ET and CLL (or CBL). Array CGH may be helpful in identifying the pathogenic mechanism in cases of concurrent development of lymphoid neoplasm and MPN.
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