In this study, we initially analyzed the expression level of the pseudogene-derived lncRNA DUXAP8 in human GC tissues by using microarray data downloaded from the Gene Expression Omnibus (GEO; GSE58828[23] and GSE13861[24]), and found that the DUXAP8 expression level was significantly upregulated in GC tissues compared with that in normal tissues (Figure 1A). Here, DUXAP8 is linked to gastric cancer.