Report: Workshop on mediastinal grey zone lymphoma

Sibrand Poppema, Joost L. Kluiver, Cigdem Atayar, Anke van den Berg, Andreas Rosenwald, Michael Hummel, Dido Lenze, Hetty Lammert, Harald Stein, Stephan Joos, Thomas Barth, Martin Dyer, Peter Lichter, Uwe Klein, Giorgio Cattoretti, Annunziata Gloghini, Yuhai Tu, Gustavo A. Stolovitzky, Andrea Califano, Antonino CarboneRicardo Dalla-Favera, Ingo Melzner, Alexandra J. Bucur, Silke Brüderlein, Karola Dorsch, Cornelia Hasel, Thomas F E Barth, Frank Leithäuser, Peter Möller

Research output: Contribution to journalArticlepeer-review


There are several indications that classical Hodgkin lymphoma (cHL) and at least a proportion of cases of Primary Mediastinal B cell Lymphoma (PMBL) are derived from B cells at similar stages of differentiation and share common pathogenic mechanisms. The first indication was the existence of mediastinal grey zone lymphomas as identified in the 4th International Symposium on HL, with clinical, histological and immunohistochemical features intermediate between cHL and PMBL. Second, both tumor types resemble a cell that is developmentally situated in-between the germinal center reaction and a plasma cell. Third, cHL and PMBL were found to have similar gene expression profiles, including the lack of immunoglobulin expression and low levels of B cell receptor signalling molecules, and the secretion of molecules like the chemokine TARC and the prominent expression of IL-13 receptors. Fourth, both entities were found to have common genomic aberrancies, notably in 2p15 and 9p24, the sites of the REL oncogene and the tyrosine kinase gene JAK2, respectively. Further comparison of both lymphoma types may provide further insight in the pathogenic mechanisms and allow the design of diagnostic algorithms to sort out the small number of so-called mediastinal grey zone lymphomas, that appear to be intermediate between PMBL and cHL.

Original languageEnglish
Pages (from-to)45-52
Number of pages8
JournalEuropean Journal of Haematology
Issue numberSUPPL.66
Publication statusPublished - 2004


  • Classical Hodgkin lymphoma
  • Gene expression profiling
  • Mediastinal grey zone lymphoma
  • Primary mediastinal B cell lymphoma
  • REL
  • TARC

ASJC Scopus subject areas

  • Hematology


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