Long-term survival in advanced-stage uterine papillary serous carcinoma.

Abstract

5596 Background: Advanced-stage (III/IV) uterine papillary serous carcinoma (UPSC) has a median overall survival (OS) of ~ 3 yrs. The study objective was to determine factors associated with long-term survival in advanced stage UPSC. Methods: We performed a retrospective review of pts diagnosed with stage III or IV UPSC between 1993 and 2012. Summary statistics were used to describe demographic and clinical characteristics. OS was estimated with the Kaplan-Meier estimator. Fisher’s exact test and the Wilcoxon rank sum test were used to compare pts surviving >3 yrs with those surviving <1 yr. Results: With a median follow-up of 2.2 years (range 0.06-13.2), 262 pts with advanced stage UPSC were identified. The probability of surviving >3 yrs was 0.462, >4 yrs was 0.310, and >5 yrs was 0.228. Thirty-six (14%) pts survived >3 yrs and 37 (14%) survived <1 yr. There was no difference in median age of pts surviving >3 yrs compared to pts surviving <1 yr (60 vs 66, p=0.21). There was also no difference between groups in demographics or medical history. There were several significant differences in pathologic and treatment variables between groups (Table). Conclusions: Though rare, long-term survival in advanced stage UPSC is associated with mixed histology, combination treatment including chemotherapy, and complete response to primary therapy. Further study of the molecular basis for these differences has the potential to improve survival for all pts with this disease. [Table: see text]