title: Expression of epidermal growth factor receptor (EGFR) and Ki67 in feline oral squamous cell carcinomas (FOSCC).
abstract: The aims of this study were to establish expression of epidermal growth factor receptor (EGFR) and Ki67 in 67 archived biopsy samples of feline oral squamous cell carcinomas (FOSCCs) and to establish if the expression of either markers was predictive of survival. Samples were immunohistochemically labelled for the two proteins and scored. Statistical analyses of data, including Kaplan-Meier survival curves, were performed. All samples expressed both markers although levels differed between samples. Median overall survival was 46 days and 1-year survival was 5%. There was no correlation between Ki67 and EGFR scores (Pearson's correlation coefficient, P = 0.861). Low cellular proliferation (low Ki67 score) was positively correlated with an overall longer survival (Log Rank, P = 0.02) and a trend towards better survival for the high EGFR group was observed (Log Rank, P = 0.076). Ki67 and EGFR immunostaining in FOSCC may be of value as biochemical markers for screening of biopsies from cases of FOSCC.
authors.affiliation: Royal (Dick) School of Veterinary Studies and Roslin Institute, Division of Veterinary Clinical Sciences, The University of Edinburgh, Hospital for Small Animals, Easter Bush Veterinary Centre, Roslin, Midlothian, UK. G.T.Bergkvist@sms.ed.ac.uk
authors.forename: G T
authors.initials: GT
authors.lastname: Bergkvist
authors.forename: D J
authors.initials: DJ
authors.lastname: Argyle
authors.forename: L
authors.initials: L
authors.lastname: Morrison
authors.forename: N
authors.initials: N
authors.lastname: MacIntyre
authors.forename: A
authors.initials: A
authors.lastname: Hayes
authors.forename: D A
authors.initials: DA
authors.lastname: Yool
mesh_terms: D000818:Animals; D014408:Biomarkers, Tumor / Q000378:metabolism*; D002294:Carcinoma, Squamous Cell / Q000378:metabolism / Q000401:mortality / Q000662:veterinary*; D002371:Cat Diseases / Q000378:metabolism* / Q000401:mortality; D002415:Cats; D066246:ErbB Receptors / Q000378:metabolism*; D005260:Female; D007150:Immunohistochemistry; D053208:Kaplan-Meier Estimate; D019394:Ki-67 Antigen / Q000378:metabolism*; D008297:Male; D009062:Mouth Neoplasms / Q000378:metabolism / Q000401:mortality / Q000662:veterinary*; D011379:Prognosis
chemical_list: D014408:Biomarkers, Tumor; D019394:Ki-67 Antigen; D066246:ErbB Receptors