Allelic discrimination of HLA-DPA1 rs3077 SNP clarified that the frequency of GG genotype was higher among PCa patients in comparison with the control group (42.5% vs. 22.5%; P=0.056) and the odds ratio (OR; 95% CI) was 2.546 (0.964–6.726). This evidence concerns the gene HLA-DPA1 and posterior cortical atrophy.