Finally, the main risk factor is an inherited genetic anomaly.
Predisposing factors are responsible for 15 to 20% of high-grade ovarian cancer cases. These are mainly abnormalities of the BRCA 1 or 2 genes or, more rarely, of Lynch syndrome.
In the event you are diagnosed with a high-grade epithelial tumor, medical staff should automatically suggest that you be tested for these anomalies.