Abstract
Based on the presence of an abundant inflammatory infiltrate, expression of a broad spectrum of cytokines and the professional antigen presenting phenotype of Hodgkin Reed-Sternberg cells it can be anticipated that immunological mechanisms play a major role in the pathogenesis of Hodgkin's lymphoma (HL). Genetic susceptibility to HL probably relates to functionality of the immune system and the large number of associations with the human leukocyte antigen (HLA) region in family and population-based studies supports this relation. In Epstein-Barr virus (EBV) positive HL cases, which usually demonstrate HLA class I expression, HRS cells should be able to present EBV derived antigenic peptides and trigger the immune system. This process depends on the affinity of the HLA binding groove for binding immunogenic peptides and thus on the HLA alleles. It can be anticipated that certain combinations of alleles predispose to or protect from the development of EBV positive HL. In EBV negative HL cases other antigenic peptides, related to malignant transformation, in combination with other HLA alleles may be involved. In addition, differential attraction and activation of inflammatory cells may influence HL subtype. In this article, possible roles of HLA in HL pathogenesis are explored and genetic associations of HLA with HL are reviewed and commented on.
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