All these four prognostic genes were significant associated with dendritic cell Tumor immune infiltration abundance: CDH2 (r = 0.296, P = 5.84 × 10−9), CDH6 (r = 0.164, P = 1.49 × 10−3), CDH6 (r = − 0.105, P = 4.41 × 10−2) and CDH10 (r = 0.274, P = 7.78 × 10−8). The gene discussed is CDH2; the disease is neoplasm.