title: PCNA, Ki-67, p53, bcl-2 and prognosis in intraoral squamous cell carcinoma of the head and neck.
abstract: Eighty patients with primary intraoral squamous cell carcinomas of the head and neck, with a follow-up of 4-14 years were analysed for clinical outcome in relation to immunohistochemical expression of PCNA, Ki-67, p53, bcl-2 and presence of mutations in the p53 gene. The tumor site was not associated with the different parameters calculated. PCNA and Ki-67 labelling showed median values of 56% and 32%, respectively, and neither antigen was of predictive value. Fifty-five percent of the tumours expressed p53, and 38 (48%) had mutations in the p53 gene. No association between the presence of p53 protein or mutations in the p53 gene and clinical outcome was found. Bcl-2 positivity was detected in a minor fraction (10%) of the tumours.
authors.affiliation: Department of Pathology, Umeå University, Sweden.
authors.forename: K
authors.initials: K
authors.lastname: Nylander
authors.forename: E B
authors.initials: EB
authors.lastname: Schildt
authors.forename: M
authors.initials: M
authors.lastname: Eriksson
authors.forename: G
authors.initials: G
authors.lastname: Roos
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017209:Apoptosis; D002294:Carcinoma, Squamous Cell / Q000737:chemistry / Q000175:diagnosis* / Q000401:mortality; D002455:Cell Division; D004252:DNA Mutational Analysis; D004273:DNA, Neoplasm / Q000032:analysis; D005260:Female; D005500:Follow-Up Studies; D006258:Head and Neck Neoplasms / Q000737:chemistry / Q000175:diagnosis* / Q000401:mortality; D006801:Humans; D007150:Immunohistochemistry; D019394:Ki-67 Antigen / Q000032:analysis* / Q000235:genetics; D008297:Male; D008875:Middle Aged; D018807:Polymorphism, Single-Stranded Conformational; D011237:Predictive Value of Tests; D011379:Prognosis; D018809:Proliferating Cell Nuclear Antigen / Q000032:analysis* / Q000235:genetics; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000032:analysis* / Q000235:genetics; D016019:Survival Analysis; D016159:Tumor Suppressor Protein p53 / Q000032:analysis* / Q000235:genetics
chemical_list: D004273:DNA, Neoplasm; D019394:Ki-67 Antigen; D018809:Proliferating Cell Nuclear Antigen; D019253:Proto-Oncogene Proteins c-bcl-2; D016159:Tumor Suppressor Protein p53