Malene Møller Jørgensen

Abstract Polygenic risk scores (PRS) show potential for risk-based colorectal cancer (CRC) screening, but their utility must be assessed across diverse ancestries and tumour characteristics and compared with the current standard, the faecal immunochemical test (FIT). The cohort included 112,204 individuals from the Copenhagen Hospital Biobank (8995 with adenoma and 9246 with CRC), all with linked genetic and health registry data. A subset (N = 20,658) also had FIT results.

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The development of companion diagnostics (CDx) will increase efficacy and cost-benefit markedly, compared to the currently prevailing trial-and-error approach for treatment. Recent improvements in high-throughput protein technology have resulted in large amounts of predictive biomarkers that are potentially useful components of future CDx assays.