PUMA–p53 Dysregulation and Ki-67 Overexpression Define Unfavorable Prognostic Signatures in Colorectal Cancer. - Mekras, Alexandros; Tsavdaris, Dimitrios; Mekras, Dimosthenis; Vasilakou, Alexandra; Paramythiotis, Daniel; Michalopoulos, Antonios; Bobos, Mattheos (Cancers, 2026)