Microsatellite instability is associated with worse overall survival in resectable colorectal liver metastases - 06/03/23

Abstract |
Background |
Microsatellite instability (MSI) has been associated with improved overall survival (OS) in locoregional colorectal cancer; however, the effects on colorectal liver metastases (CRLM) have not been studied.
Methods |
The National Cancer Database (NCDB) was queried for patients with CRLM that underwent metastasectomy. Patients with microsatellite stable tumors (MSS) (n = 2,316, 84.4%) were compared those with MSI (n = 427, 15.6%).
Results |
Baseline characteristics, including sex, race, and underlying comorbidities, were similar between groups. MSS patients had lower rates of high-risk pathologic features and higher rates of receiving multi-agent chemotherapy. On Kaplan-Meier analysis, median OS in the MSS group was improved compared with the MSI group (41.1 mo vs. 33.2 mo, p < 0.01). On multivariate analysis MSI status remained associated with worse OS (HR: 1.21 95% CI: 1.01–1.46, p = 0.04).
Conclusions |
This national analysis of CRLM validates MSI status as a biomarker to guide clinical decision-making due to the associated poor prognosis.
Le texte complet de cet article est disponible en PDF.Highlights |
• | Microsatellite stable colorectal liver metastases have fewer high-risk pathologic features. |
• | Microsatellite instability is independently associated with decreased overall survival. |
• | Microsatellite instability is a potential biomarker to guide clinical decision-making. |
Keywords : Colorectal liver metastases, Microsatellite instability, Metastasectomy
Plan
Vol 225 - N° 2
P. 322-327 - février 2023 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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