Prostate-specific membrane antigen positron emission tomography (PSMA/PET) with computed tomography (PET/CT) or MRI (PET/MRI) has become an important modality for imaging of PC, but mainly for N- and M-staging (local lymph nodes and distant metastases) in high-risk disease and in biochemical recurrence after curative treatment. Here, FOLH1 is linked to pachyonychia congenita.