CCL13 and posterior cortical atrophy: Conversely, the IVW method verified positive associations between PCa and 2 cytokines, namely fms-related receptor tyrosine kinase 3 ligand (Flt3L) (OR: 1.0016, 95% CI: 1.0000–1.0032, P = .045) and MCP4 (OR: 1.0012, 95% CI: 1.0001–1.0023, P = .031), and analogous conclusions were surveyed in WM approach and RAPS approach, further supporting the positive association between MCP4 and PCa incidence.