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Clinicopathology Significance of p53 and p63 Expression in Indonesian Cervical Squamous Cell Carcinomas

  • Romus, Ilhami (Department of Anatomical Pathology, Faculty of Medicine, Gadjah Mada University) ;
  • Triningsih, F.X. Ediati (Department of Anatomical Pathology, Faculty of Medicine, Gadjah Mada University) ;
  • Mangunsudirdjo, Sagiri (Department of Anatomical Pathology, Faculty of Medicine, Gadjah Mada University) ;
  • Harijadi, Ahmad (Department of Anatomical Pathology, Faculty of Medicine, Gadjah Mada University)
  • Published : 2013.12.31

Abstract

Background: Human papilloma virus infection is associated with genesis and malignant potential of cervical cancer. E6 and E7 oncogens are known to bind to p53 and retinoblastoma gene products, abrogating their functions as tumor suppressors, leading to an abnormal cell cycle machinery. Roles of the p53 homolog p63 have also been postulated, E6 expression leading to TAp63b degradation allowing anchorage independent growth. Molecular studies correlated with clinicopathological factors are important to determine prognosis and treatment strategies, but results have been controversial and need to be clarified. Aim: To investigate expression of p53 and p63 in cervical squamous cell carcinomas in correlation with age, FIGO staging, morphology, and cancer cell proliferation. Materials and Methods: Expression of p53 and p63 immunohistochemical staining in a total of 56 paraffin-embedded tissues of cervical squamous cell carcinomas from Dr. Sardjito General Hospital Indonesia, was evaluated for correlation with clinicopathological parameters. The Mann-Whitney test was used to compare the percentage of p53 and p63 expression with patient age, FIGO staging and morphology and to compare mean p53 and p63 expression. The Spearman correlation test was applied to correlate p53 and p63 expression with that of Ki-67. A p-value of <0.05 was considered statistically significant. Results: There were significant associations between p53 expression with age (p=0.019) and FIGO staging (p=0.026), but not with with morphology or Ki-67 expression. There were no links between p63 expression and age, morphology, FIGO staging or Ki-67. Conclusions: This study indicated that p53 has a prognostic value in cervical squamous cell carcinomas given the relation with FIGO staging.

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