Hamilton CA, et al. - The authors aimed to assess clinicopathologic factors associated with 10-year overall survival in epithelial ovarian cancer (EOC) and primary peritoneal cancer (PPC), and to develop a predictive model identifying long-term survivors. When controlling for other confounders, long term survival (LTS) was seemed associated with the absence of ascites, a low CA-125, stage, and R0 at the time of cytoreduction. Clinical utility of an extensively annotated clinicopathologic prediction model for LTS fell short suggesting that prognostic molecular profiles are needed to better predict which patients are likely to be long-term survivors.