Contribution of class I HLA-A2 antigen in immune reactions

L. Komlos, J. Hart, T. Klein, E. Livni, J. Notmann, D. Vardimon, Z. Ben-Rafael, I. Halbrecht

Research output: Contribution to journalArticlepeer-review


The involvement of the Class I HLA-A2 antigen is briefly reviewed in relation to allograft rejection, the feto-maternal relationship, viral cytotoxic reactions and tumor immunity. It is suggested that the HLA-A2 molecule may have, as compared to other HLA Class I alleles, a dominant role as a restricting element in cytotoxic T-cell recognition in the feto-maternal relationship to male fetuses, in specific viral infections and in tumors. As compared to other HLA Class I alleles, its reduced expression or loss in a variety of tumors suggests its possible important role in tumor immune surveillance. The disappearance of HLA-A2 from tumor cells may eventually contribute to the escape from T-cell recognition of malignant cells.

Original languageEnglish
Pages (from-to)54-58
Number of pages5
JournalMedical Hypotheses
Issue number1
StatePublished - Jul 1995


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