title: Prognostic significance of p53 and p63 immunolocalisation in primary and matched lymph node metastasis in oral squamous cell carcinoma.
abstract: This study evaluates the prognostic significance of p53 and p63 immunolocalisation in oral squamous cell carcinoma samples from 45 matched primary tumors (PT) and lymph node metastases (LNM). Data regarding patient age, gender, primary site, histological differentiation, metastasis, disease-free survival (DFS) and overall survival (OS) were available. p53 and p63 immunolabeling was detected in 17 (37.8%) and 23 (51.1%) of the PT, respectively. For LNM, there was p53 and p63 labeling in 23 (51.1%) and 26 (57.8%) cases, respectively. Most cases showed similar labeling in PT and the corresponding LNM (73.3% for p53 and 53.3% for p63, respectively). No statistically significant associations were found between p53 and p63 immunolabeling and histological differentiation; p63 positive tumors showed higher DFS (p=0.006) and OS (p=0.049); and p53-negative tumors had a higher DFS interval (p=0.009). Our findings suggest that initially p53-negative tumors and initially p63-positive tumors that retain this labeling pattern may follow less aggressive biological courses and present better prognoses.
authors.affiliation: Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, Av. Bandeirantes, 3900, Bairro Monte Alegre, 14049-900 Ribeirao Preto-SP, Brazil. lucinei@yahoo.com
authors.forename: Lucinei Roberto
authors.initials: LR
authors.lastname: Oliveira
authors.forename: Alfredo
authors.initials: A
authors.lastname: Ribeiro-Silva
authors.forename: Sérgio
authors.initials: S
authors.lastname: Zucoloto
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000378:metabolism* / Q000473:pathology*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008207:Lymphatic Metastasis / Q000473:pathology; D008297:Male; D008565:Membrane Proteins / Q000378:metabolism*; D008875:Middle Aged; D011379:Prognosis; D015996:Survival Rate; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism*
chemical_list: C081876:CKAP4 protein, human; D008565:Membrane Proteins; D016159:Tumor Suppressor Protein p53