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Am J Surg Pathol. 2003 Nov;27(11):1483-8.

Analysis of a clonally related mantle cell and Hodgkin lymphoma indicates Epstein-Barr virus infection of a Hodgkin/Reed-Sternberg cell precursor in a germinal center.

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  • 1Department of Pathology, University of Frankfurt, Germany.


The simultaneous occurrence of a Hodgkin lymphoma (HL) and a non-Hodgkin lymphoma (NHL) is a rare event, and single cell analyses of such composite lymphomas revealed that NHL and Hodgkin/Reed-Sternberg (HRS) tumor cells are frequently descendants of the same tumor clone precursors. Here we present a composite lymphoma consisting of a mantle cell lymphoma (MCL) and an HL with EBV- and EBV+ HRS cells. Analysis of rearranged V genes of single cells revealed a clonal relationship between MCL and HL tumor cells. Although V gene rearrangements of the MCL were unmutated, mutations were observed in HRS cells. Besides mutations shared by all HRS cells, the EBV+ HRS cells carried identical additional mutations. These findings show that both lymphomas derive from a common precursor, most likely a pre germinal center (GC) B cell that already carried some transforming event(s). However, the presence of mutations in the V genes of the HRS cells further corroborates the importance of the GC reaction for the pathogenesis of HL. Importantly, the finding that only a subclone of the HRS clone, defined by a particular mutation pattern, was EBV infected represents a strong indication that EBV infection of the HRS cell precursor happened in the GC.

[PubMed - indexed for MEDLINE]
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