Rasoul Esmaeili - Student&#۰۳۹;s Research Committee, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
Masoud Seyedin Khorasani - Molecular Medicine Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
Alireza Monsef - Department of Pathology, Hamadan University of Medical Sciences, Hamadan, Iran

Background: Basal cell carcinoma is the most common form of skin cancer in men. Increased marker expressions of apoptosis and cell proliferation have been found in the majority of basal cell carcinomas. Our purpose was to determine whether any correlation between immunohistochemical expressions of P۵۳ and Ki-۶۷ in different histopathological variants of basal cell carcinoma and patient’s age, gender and tumor localization existed.Methods: We evaluated basal cell skin specimens obtained from ۱۰۰ previously diagnosed cases of basal cell carcinoma at the Dermatology Clinic of Farshchian Hospital, Hamadan, Western Iran. At first the specimens were fixed by formalin and stained by hematoxylin-eosin. Histopathological types of the tumor were determined. Immunohistochemical expressions of Ki- ۶۷and P۵۳ were examined. Clinical features of the patients such as age, gender, and lesion site were collected from their files.Results: The specimens were obtained from ۶۲ (۶۲%) men and ۳۸ (۳۸%) women with an age range of ۲۲-۱۰۷ years. Of basal cell carcinoma specimens, ۷۶% expressed P۵۳ and ۶۰% expressed Ki-۶۷. There was strong staining intensity of P۵۳ protein in ۷۰% and Ki-۶۷ antigen in ۳۰% of specimens. Strong staining intensity of Ki-۶۷ in patients of lower ages was significantly correlated. There was no statistically significant correlation between these markers and other variables (P>۰.۰۵).Conclusion: This study highlighted the value of P۵۳ and Ki-۶۷ markers in basal cell carcinoma. We did not observe any significant difference between the histopathological types based on the P۵۳ and Ki-۶۷ expressions and their staining intensities.