The results discovered that 8 overlapping targets were associated with the KEGG assay embedded in WebGestalt, including 7 in PCA (CDK2, CDKN1A, MDM2, CCND1, TP53, CCNE1, and CCNE2) and 5 in SCLC (CDK2, CCND1, TP53, CCNE1, and CCNE2). Here, CDKN1A is linked to small cell lung carcinoma.