The results suggested that 89Zr-cetuximab uptake is correlated with response, but this warrants further clinical validation.263 Besides, N-(3-chloro-4-fluorophenyl)-7-(2-(2-(2-(2-18F-fluoroethoxy) ethoxy) ethoxy) ethoxy)-6-methoxyquinazolin-4-amine (18F-MPG) precisely quantified EGFR-activating mutation status, meanwhile monitored the response to EGFR-TKIs in NSCLC patients.264. Here, EGFR is linked to non-small cell lung carcinoma.