PCNA and neoplasm: We assessed the transcript levels of candidate genes involved in the p53 tumor suppressor pathway and known to play roles in either cell-cycle control and/or DNA damage repair (p21, GADD45A, WIP1, PCNA, Cyclin D1 and 14-3-3σ) or apoptosis (Bax, Fas1, PUMA, Noxa) [54]–[66].