SOX2 and gastric cancer: A growing body of evidence suggests that lncRNA is an effective biomarker of cancer.16 For instance, LncRNA SOX2‐OT,17 EGFR‐AS1,18 LOC101928316,19 and ZFAS120 were, respectively, identified as diagnostic or prognostic biomarkers for osteosarcoma, squamous cell carcinoma, gastric cancer, and colorectal cancer.