1/10https://ejgo.orgABSTRACTObjective: To analyze the clinical characteristics, prognosis and parallel clinical course ofovarian cancer (OC) and dermatomyositis (DM).Methods: The medical records of 23 consecutive patients who were diagnosed with OC andDM and were treated at Peking Union Medical College Hospital (PUMCH) between 2002and 2017 were reviewed. Propensity score matching method was used to match controlgroup (OC patients without DM) at a ratio of 1:5. The correlation between OC and DM wasmeasured using the Pearson correlation scatter plot and Pearson'sr. Kaplan-Meier survivalanalysis and Cox proportional hazard regression analysis were performed to evaluate theprognostic factors.Results: After matching, 23 patients who have the concurrence of OC and DM (DM group)and 115 patients diagnosed with OC alone (No DM group) were included. The 5-year overallsurvival rates (71.6% vs. 51.8%, p=0.020) and 5-year progression-free survival (30.5% vs.0%, p=0.018) were poorer in DM group. Cor...