Our results show that PCa patients with heavy beer intake are more likely to have PCa aggressiveness in the rs9907521 AG genotype in PRKCA. Although the risk effect of heavy beer intake was not significant for those with the rs9907521 GG genotype because of the small sample size (n = 13), the difference in PCa aggressiveness prevalence for those with and without heavy beer intake (66.7% vs. 12.5%) is the largest among all genotypes for these three SNPs in Figure 2. Here, PRKCA is linked to posterior cortical atrophy.