FAP and lung cancer: Although we found that FAP, integrin β3 staining scores, and the FAP-integrin β3 Joint Score were all positively correlated with SUVs of [68Ga]Ga-FAPI-RGD, we must acknowledge that the small sample size of our pathological section cohort did not allow us to draw a strong conclusion and that results need to be confirmed in future studies by histopathological analysis of larger lung cancer tissue samples.