SLC31A1 and non-small cell lung carcinoma: When distinguishing NSCLC from NC, the AUC values of anti-COPT1-IgG and anti-COPT1-IgM were 0.733 (95% CI: 0.694-0.771, sensitivity=64.8%, specificity=70.4%) and 0.679 (95% CI: 0.638-0.720, sensitivity=81.9%, specificity=44.5%), respectively (Figures 5C, D).