SKP2 and prostate adenocarcinoma: Within this group of genes, Ets2 (V-ets erythroblastosis virus E26 oncogene homolog 2) and Skp2 (S-phase kinase-associated protein 2, p45) were identified as proto-oncogenes, and Krt14 (Keratin 14) is a structural protein that is widely used as a marker for prostate adenocarcinoma.