Objective: Heat shock protein 27 (HSP27) is produced in response to pathophysiologic stress in animal cells. The authors have previously shown that HSP27 is an independent prognostic indicator in patients with ovarian carcinoma. The present study was performed to see whether HSP27 remained an independent prognostic indicator with longer follow-up.
Methods: One hundred and three consecutive patients with epithelial ovarian carcinoma were studied. Slides were prepared from fresh tissue. HPS27 staining was performed as previously described. Patient records were examined for FIGO stage, grade, histology, level of cytoreduction and survival.
Results: One hundred and three patients were followed for a mean of 60 months. Twenty patients had FIGO Stage I disease, four Stage II, 59 Stage III, and 20 Stage IV. Immunohistochemical (IHC) staining for HSP27 was not related to histologic grade, level of cytoreduction or histologic subtype. A statistically significant decrease in HSP27 staining was found to correlate with increased FIGO stage (p = 0.008). Using cox-regression analysis, HSP27 staining (p = 0.025), stage (p = 0.0012), and level of cytoreduction (p < 0.0001) were independent predictors of survival in these patients.
Conclusion: Cox-regression analysis found HSP27 to be an independent indicator of prognosis and survival in patients with ovarian carcinoma who had longer follow-up. Decreased HSP27 staining was related to decreased survival. This study confirms the authors' earlier report on the importance of HSP27 as a prognostic indicator in ovarian carcinoma.
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