Journal article

Using polygenic risk scores to refine risk and outcomes in high-grade serous ovarian cancer in Australia.

Rachel Delahunty, S Sandun M Silva, Ahwan Pandey, Dale W Garsed, Jonathan Beesley, Sian Fereday, Nadia Traficante, Stuart Craig, Linh N Nguyen, Joy Hendley, Elizabeth L Christie, Penelope M Webb, Georgia Chenevix-Trench, David Dl Bowtell, Kathryn Alsop, Madawa Jayawardana, Paul A James

Cancer Epidemiol Biomarkers Prev | Published : 2026

Open access

Abstract

BACKGROUND: Ovarian cancer is characterised by high mortality and lacks effective screening, making prevention critical. Polygenic risk scores (PRS), which aggregate the effects of multiple common alleles, may capture a proportion of currently unexplained genetic risk. While PRS have been evaluated for risk prediction, their association with treatment response and survival remains unclear. This study assessed the utility of a PRS for predicting high-grade serous ovarian cancer (HGSOC) risk in an Australian population and its association with chemotherapy response and outcomes. METHODS: PRS were calculated for 1,097 HGSOC, and 812 controls using data from Australian research programs. Associa..

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