RNF217-AS1 and small cell lung carcinoma: The diagnostic accuracy of Model SCLC that referred to six lectins (STL, BS-I, PTL-II, SBA, PSA, and GNA) in the training cohort was appraised by ROC analysis, indicating that Model SCLC had higher discriminatory power for differentiating SCLC from NSCLC (AUC: 0.846, sensitivity: 0.710, and specificity: 0.867) than two single candidate lectins, such as STL (AUC: 0.652, sensitivity: 0.591, and specificity: 0.700) and BS-I (AUC: 0.618, sensitivity: 0.785, and specificity: 0.467).