Comparative analysis revealed that PTGDS, and HBB exhibited lower expression levels in tumor tissues compared to normal tissues (Figures 5A, D, P>0.05).Comparative analysis revealed that ITIH2, and LSAMP exhibited higher expression levels in tumor tissues compared to normal tissues (Figures 5B, C, P<0.05), high expression of ITIH2 in cancer tissue is not associated with patient prognosis (Figure 5B, P>0.05), high expression of LSAMP in cancer tissue is associated with patient prognosis (Figure 5C, P<0.05). This evidence concerns the gene PTGDS and cancer.