Abstract

This study aimed to analyze the survivals and clinicopathological features of epithelial ovarian cancer (EOC) in younger age patients and to determine the impact of age on survival. EOC patients aged ≤40 years were matched to patients aged >40 years at a 1:4 ratio. Disease-specific survival (DSS), progression-free survival (PFS), and clinicopathological and treatment features were compared between patients aged ≤40 and >40 years. A total of 763 EOC patients were reviewed. During a median follow-up period of 41 (range, 1-195) months, EOC patients aged ≤40 and >40 years did not show any statistically significant difference in median DSS (120 versusversus 84.7 months; hazard ratio, 0.78; 95% confidence interval, 0.58, 1.06); however, the median PFS was better in patients aged ≤40 years (median PFS not reached versusversus 41 months; HR, 0.65; 95% CI, 0.5, 0.85). Age ≤40 years was an independent favorable prognostic factor for DSS at 3 years after diagnosis. In contrast, younger age was an independent poor prognostic factor prior to this time point. EOC patients aged ≤40 years exhibited a significantly higher rate of early-stage disease, a higher proportion of mucinous subtype, and lower cancer antigen-125 level. Overall, EOC patients in the younger age group were associated with more favorable prognostic factors and showed better PFS, but not DSS, than those in the older age group. Younger age was identified as an unfavorable prognostic factor within 3 years of diagnosis and became a favorable prognostic factor after 3 years.

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