GPC2 and polyp of colon: The transcription level of GPC2 in the COAD tissues of the dead patients was higher than that of the alive patients, and GPC2 transcriptional levels were higher in patients with disease than in patients without disease, while GPC2 transcriptional levels were lower in patients with a history of colonic polyps than in patients without a history of colonic polyps (Figure 2g–i).