Histocompatibility leukocyte antigen patterns in nasopharyngeal carcinoma cases from California.

Histocompatibility leukocyte antigen (HLA)-A2 in the first locus and less than two antigens in the second locus were found to be significantly associated with an increased risk to nasopharyngeal carcinoma in Chinese. HLA-A2 in the first locus alone was responsible for the increased risk. No significant HLA patterns were found to be associated with the Caucasian population.