PTGDR and malignant colon neoplasm: Survival analysis showed that higher expression of AC131571.1, ANO1‐AS2, ITCH‐IT1, ARHGEF26‐AS1, AP004609.1, LINC00491, KCNQ1OT1, MACROD2‐IT1, TSSC1‐IT1 or LINC00355 was correlated to poor OS in patients with colon cancer.