Association of RNF43 Genetic Alterations With BRAFV600E and MSIhigh in Colorectal Cancer
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View abstract on PubMed
Summary
This summary is machine-generated.Microsatellite-stable colorectal cancer (CRC) patients with RNF43 genetic alterations (GAs) may benefit from targeted therapies. This study found RNF43 GAs in 23% of BRAF-mutant MSS CRC, suggesting a potential biomarker for treatment selection.
Area Of Science
- Oncology
- Genetics
- Molecular Biology
Background
- RNF43 genetic alterations (GAs) show predictive value for targeted therapies in microsatellite-stable (MSS) colorectal cancer (CRC).
- BRAF V600E mutations are key targets in CRC treatment strategies.
- Identifying overlapping biomarkers can refine patient stratification for optimal therapeutic benefit.
Purpose Of The Study
- To determine the frequency and overlap of BRAF and RNF43 genetic alterations (GAs) in a large colorectal cancer (CRC) cohort.
- To investigate the association of RNF43 GAs with microsatellite instability (MSI) and tumor mutational burden (TMB) status.
- To evaluate the potential of RNF43 GAs as predictive biomarkers in BRAF V600E-mutant MSS CRC.
Main Methods
- Retrospective analysis of 52,969 colorectal cancer (CRC) patients from the FoundationCORE database.
- Assessment of BRAF and RNF43 genetic alterations (GAs).
- Correlation analysis with microsatellite instability (MSI) and tumor mutational burden (TMB) status.
Main Results
- RNF43 GAs were significantly associated with MSI and tumor mutational burden status, and BRAF mutations.
- 23% of MSS patients with BRAF V600E mutations also harbored RNF43 GAs.
- This 23% represents 1.1% of all CRC cases and 15.7% of all CRC BRAF V600E cases.
Conclusions
- RNF43 GAs are frequent in BRAF V600E-mutant MSS CRC, suggesting their utility as predictive biomarkers.
- Broader genetic profiling, including RNF43 status, is recommended for clinical trials like BREAKWATER.
- Patients with RNF43-mutant, MSS BRAF V600E CRC may exhibit superior sensitivity to anti-EGFR/BRAFi therapies.
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