The expression levels of LncRNA ADAMTS9-AS2 and miR-223-3p were negatively correlated in GC tissues (Figure 1C), which were validated by the online Pan-cancer correlation analysis (http://hopper.si.edu/wiki/mmti/Starbase) for 372 specimens from the patients with stomach adenocarcinoma (STAD) (Figure 1D). Here, ADAMTS9 is linked to gastric adenocarcinoma.