P4HA1 and colorectal carcinoma: To verify the effect of the P4HAs in CHDH‐mediated CRC cell migration, the P4HA‐specific small‐molecule inhibitor 1,4‐dihydrophenonthrolin‐4‐one‐3‐carboxylic acid (1,4‐DPCA) was used to inhibit P4HA expression.