Abstract
Human leukocyte antigen (HLA) genes have been associated with susceptibility and protection against a number of cancers. Here we used an immunogenetic epidemiological approach to evaluate the overall influence of 127 HLA Class I and II alleles on 30 types of cancer. We found a preponderance of protective alleles (negatively correlated with cancer prevalences), especially for HLA Class I. Of the 30 cancers investigated, 13 were associated with mostly protective HLA effects whereas only 2 were associated with mostly susceptibility HLA alleles. Taken together, these findings highlight the broad influence of HLA on cancer and the complexity of HLA-cancer associations.