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Innere Medizin 1. September 2008

Targetable oncogenic pathways in Hodgkin and Reed-Sternberg cells of classical Hodgkin lymphoma

Classical Hodgkin lymphoma is a lymphoid neoplasm consisting of mononuclear Hodgkin and multinuclear Reed-Sternberg cells, mostly of B-cell origin, embedded in a non-neoplastic background. Most patients are cured with the current risk- and response adapted therapy, albeit a portion of patients either will fail to respond or will relapse. An important drawback, considering the healed individuals, is the increasing late toxicity, particularly the high incidence of secondary malignancies. Landmark discoveries from the recent decade point towards the significance of a few molecular pathways in classical Hodgkin lymphoma pathogenesis, to which Hodgkin and Reed-Sternberg cells are oncogenically addicted. Several players of these oncogenic pathways can be or are now targeted in in vitro and in vivo models as well as in early clinical trials. Some of these oncogenic pathways in Hodgkin and Reed-Sternberg cells that could form the basis for rational molecular modulations as well as current data from targeted-therapy studies aiming at these pathways will be summarized in the review.

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