Variation in HLA Class I Antigen-Processing Genes and Susceptibility to Human Papillomavirus Type 16—Associated Cervical Cancer

Deshpande, Alma; Wheeler, Cosette M.; Hunt, William C.; Peyton, Cheri L.; White, P. Scott; Valdez, Yolanda E.; Nolan, John P.
February 2008
Journal of Infectious Diseases;2/1/2008, Vol. 197 Issue 3, p371
Academic Journal
Background. Persistent infection with human papillomavirus type 16 (HPV16) is a primary etiological factor for the development of cervical cancer. Genes involved in antigen processing influence both the repertoire of antigens presented by HPV16-infected cells and the nature of HPV16-specific immune responses. Genetic variation in these genes may affect protein structure and function and, consequently, the ability of an individual to clear HPV infection. Methods. Thirty-five single-nucleotide polymorphisms (SNPs) in 5 genes (LMP2, TAP], LMP7, TAP2, and Tapasin) were investigated for association with susceptibility to HPV 16-associated cervical cancer. Sequencing of these genes resulted in the discovery of 15 previously unreported SNPs. Microsphere-array flow cytometry- based genotyping was conducted on 787 samples from Hispanic and non-Hispanic white women (241 randomly selected control subjects, 205 HPV 16-positive control subjects, and 341 HPV16-positive case subjects with cervical cancer). Results. For 9 SNPs, 8 of which had not previously been reported in the context of cervical cancer, there were statistically significant differences between the genotype distribution in case subjects and that in control subjects. Haplotype analysis of 3 haplotype blocks revealed 3 haplotypes with significant differences in frequency in case-control comparisons. Both HPV16-specific and non-type-specific differences in genotype distribution were seen. Conclusions. Genes involved in antigen processing for HLA class I presentation may contribute to susceptibility to cervical cancer.


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