Pan-Cancer Prevalence of Microsatellite Instability-High (MSI-H) Identified by Circulating Tumor DNA and Associated Real-World Clinical Outcomes.
Pashtoon Murtaza KasiLeslie A BucheitJiemin LiaoJason S StarrPedro C BarataSamuel J KlempnerDavid R GandaraArdaman ShergillLuciana Madeira da SilvaCaroline WeipertNicole ZhangChristopher PretzAaron I HardinLesli A KiedrowskiJustin I OdegaardPublished in: JCO precision oncology (2023)
These data support use of a well-validated ctDNA assay to detect MSI-H across solid tumors and suggest prolonged PFS in patients treated with IO-containing regimens after detection. Tumor-agnostic, ctDNA-based MSI testing may be reliable for rapid decision making.
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