ZFAS1 and gastric cancer: Pan et al. [31] found that ZFAS1 was highly expressed in serum exosomes of GC patients, and the expression level of ZFAS1 was significantly correlated to LNM and TNM stage, and ROC curve showed that AUC was 0.837 (95% CI 0.749–0.924), with the sensitivity being 80.00% and the specificity being 75.7%, indicating that the exosomes could promote the malignant progress of GC by transporting ZFAS1.