ROC curves constructed using plasma PCAT6 levels in patients with lung adenocarcinoma and lung squamous cell carcinoma yielded areas under the curve (AUC) of 0.9213 (sensitivity 87.67%; specificity 97.44%) and 0.9583 (sensitivity 94.12%; specificity 100%)[32], respectively. This evidence concerns the gene PCAT6 and squamous cell lung carcinoma.