In ADC, the PTCH2 gene were associated with 1 PET image feature; in SQCC, the ERCC2, IRS2, NOTCH1, and XPO1 genes were associated with 6 features; and in SCLC, the TSHR and ROS1 genes were associated with 2 features. The gene discussed is ERCC2; the disease is small cell lung carcinoma.