Moreover, PCa patients harbouring at least one polymorphic C allele of DPP4 rs2268889 also showed a significantly higher risk of having advanced cT stages (OR: 1.693‐fold; 95% CI: 1.092–2.624; p = 0.018) than those harbouring the WT gene (Table 4). Here, DPP4 is linked to posterior cortical atrophy.