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Published on: September 27, 2024
Association between chromosomal instability and prognosis in colorectal cancer: a meta-analysis
A Walther1, R Houlston, I Tomlinson
1Molecular and Population Genetics Laboratory, London Research Institute, Cancer Research UK, London, UK. axel.walther@cancer.org.uk
Gut
|March 28, 2008
Summary
Chromosomal instability (CIN) is linked to a poorer prognosis in colorectal cancer (CRC) patients. This finding suggests CIN should be considered alongside microsatellite instability (MSI) as a prognostic marker in CRC clinical trials.
Area of Science:
- Oncology
- Genetics
- Cancer Research
Background:
- Microsatellite instability (MSI) has been associated with better colorectal cancer (CRC) prognosis.
- Recent findings suggest MSI's prognostic value may be secondary to chromosomal instability (CIN).
Purpose of the Study:
- To evaluate the prognostic significance of chromosomal instability (CIN) for survival in colorectal cancer (CRC).
Main Methods:
- A systematic review and meta-analysis of published studies stratifying CRC survival by CIN status.
- Data from 63 eligible studies involving 10,126 patients were pooled using a fixed-effects model.
Main Results:
- Chromosomal instability (CIN) was associated with a significantly worse prognosis in CRC patients (HR = 1.45).
- This association persisted in stage II-III CRC and for progression-free survival (HR = 1.71).
- No significant interstudy heterogeneity was detected.
Conclusions:
- Chromosomal instability (CIN) is a significant negative prognostic marker in colorectal cancer (CRC).
- CIN should be evaluated alongside MSI status in clinical trials, especially those for adjuvant therapies.
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