Initial results with [68 Ga]Ga-FAPI-04 PET/CT in patients suffering from overall 28 different kinds of cancer demonstrated high tracer uptake in sarcoma, cholangiocarcinoma, esophageal, breast, and lung cancer and intermediate uptake in hepatocellular, colorectal, head-neck, ovarian, pancreatic, and PC, providing the foundation to further explore FAP as a theranostic target in PC [10]. The gene discussed is FAP; the disease is lung carcinoma.