title: Prognostic significance of Ki-67 and p53 as tumor markers in salivary gland malignancies in Finland: an evaluation of 212 cases.
abstract: The proliferative capacity of a tumor as measured by Ki-67 nuclear antigen is one of the most powerful indicators of tumor behavior. Ki-67 is considered a useful tool in determining the aggressiveness of malignant neoplasms. p53 tumor suppressor gene mutations have been linked with the development and progression of a number of various cancer types. p53 tumor suppressor protein and the volume corrected index of Ki-67 corresponding to Ki-67 /mm2 of tumor tissue (VCI Ki-67) in salivary gland tumors were evaluated by immunohistochemistry from paraffin embedded sections in a series of 212 patients. The follow-up time in this nationwide full population-based study was up to five years. The association of clinicopathological features and the results of present study with survival were examined. In multivariate analysis high VCI Ki-67 was associated with worse survival of SGC patients (p = 0.0114). Supplementary information was brought by age (p = 0.0002), lymph node status (p = 0.0014), gender (p = 0.0017) and stage (p = 0.0191). p53 expression did not have additional value in prediction of survival (p = 0.1433) compared to the commonly clinical used parameters. In this material consisting of various salivary gland carcinomas VCI Ki-67 was a good prognostic factor for survival.
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, University of Turku, Turku, Finland.
authors.forename: Heikki
authors.initials: H
authors.lastname: Luukkaa
authors.forename: Pekka
authors.initials: P
authors.lastname: Klemi
authors.forename: Ilmo
authors.initials: I
authors.lastname: Leivo
authors.forename: Tero
authors.initials: T
authors.lastname: Vahlberg
authors.forename: Reidar
authors.initials: R
authors.lastname: Grénman
mesh_terms: D000367:Age Factors; D014408:Biomarkers, Tumor / Q000235:genetics* / Q000378:metabolism; D005260:Female; D005387:Finland; D006801:Humans; D007150:Immunohistochemistry; D019394:Ki-67 Antigen / Q000235:genetics* / Q000378:metabolism; D008297:Male; D015999:Multivariate Analysis; D009367:Neoplasm Staging; D011379:Prognosis; D012468:Salivary Gland Neoplasms / Q000235:genetics* / Q000473:pathology*; D012737:Sex Factors; D015996:Survival Rate; D016159:Tumor Suppressor Protein p53 / Q000235:genetics* / Q000378:metabolism
chemical_list: D014408:Biomarkers, Tumor; D019394:Ki-67 Antigen; D016159:Tumor Suppressor Protein p53