The majority of CT scans were discordant with PSMA PET (17/27, 63%), mostly due to PSMA PET highlighting more sites of disease (n=14; Fig. 3a), including sub-diaphragmatic nodal disease (18.5%), bone metastasis (14.8%) and adrenal metastasis (14.8%; Supplementary Table 1). The gene discussed is FOLH1; the disease is bone metastasis.