Accordingly, we divided HGC‐27/R and MKN‐45/R xenograft tumor‐bearing mice into the following eight groups: a PBS group, a CGE‐only group, a FAM‐si‐TMEM44‐AS1‐only group, a CGE/FAM‐si‐TMEM44‐AS1 group, a 5‐FU‐only group, a 5‐FU + CGE group, a 5‐FU + FAM‐si‐TMEM44‐AS1 group, and a 5‐FU + CGE/FAM‐si‐TMEM44‐AS1 group. Here, PTGDR is linked to neoplasm.