Prognostic Factors for Uterine Sarcoma and Carcinosarcoma: Insights from a 10-Year Follow-Up Study

BACKGROUND Uterine sarcomas and carcinomas are rare tumors and treatment outcomes are far from expected. We investigated the prognostic significance of selected serum biomarkers and the impact of some clinical and tissue factors on overall survival (OS) at 10-year follow-up. MATERIAL AND METHODS The material for analysis was a group of 34 patients with uterine sarcomas and 18 with carcinomas. Immunohistochemistry was performed to determine Ki 67, p53 and ER and PR. Concentrations: CA 125, IL8, VEGF, SFTL1, VEGF R2, sTNFRI and MMP-9 were determined in the serum of patients before treatment and in the control group. RESULTS The most frequently elevated levels observed of sTNF RI in 94% and VEGF in 62%. On the ROC curve analysis, sTNF RI and VEGF concentrations showed the highest sensitivity. Patients with striated cell sarcoma, smooth cell sarcoma and high-grade rhabdomyosarcoma had the worst prognosis. Patient age, FIGO stage and expression of Ki67, p53, ER and PR, CA 125 (p<0.038) and IL-8 (p<0.024) were statistical prognostic factors for OS. However, in multivariate analysis, serum levels of: CA 125 concentration (p<0.045), age (p<0.010) and p53 expression (p<0.014) were found to be significant independent prognostic factors. CONCLUSIONS A 10-year follow-up of patients with uterine sarcoma indicates that age above 60 years at diagnosis and high p53 expression and elevated CA125 levels before treatment can be independent prognostic factors. The high diagnostic sensitivity of sTNF RI and VEGF suggests the possibility of using these biomarkers in the early diagnosis of uterine sarcomas.