PDIA5 and pachyonychia congenita: The phenome-wide investigation revealed 12 proteins associated with 51 non-PC traits, and interference on protein disulfide-isomerase A5 and cystatin-D would increase the risk of other malignancies.<h4>Conclusions</h4>By employing comprehensive methodologies, this study demonstrated a genetic predisposition linking 21 circulating proteins to PC risk.