Thymidylate Synthase Polymorphisms and Chemotherapy Response in Liver-Only Metastatic Colorectal Cancer
Author Information
Author(s): Graziano F, Ruzzo A, Loupakis F, Santini D, Catalano V, Canestrari E, Maltese P, Bisonni R, Fornaro L, Baldi G, Masi G, Falcone A, Tonini G, Giordani P, Alessandroni P, Giustini L, Vincenzi B, Magnani M
Primary Institution: Azienda Ospedaliera ‘Ospedale San Salvatore’, Pesaro, Italy
Hypothesis
Can thymidylate synthase polymorphisms predict response to 5-fluorouracil-based chemotherapy in liver-only metastatic colorectal cancer patients?
Conclusion
The study found a significant association between thymidylate synthase polymorphisms and tumor response to chemotherapy in liver-only metastatic colorectal cancer patients.
Supporting Evidence
- High thymidylate synthase expression genotypes were found in 23.5% of patients with complete or partial response.
- 52% of patients with stable disease and disease progression had high thymidylate synthase expression genotypes.
- The study included patients with cytologically or histologically confirmed metastatic colorectal cancer.
- Patients underwent first-line chemotherapy including leucovorin and 5-fluorouracil.
- Statistical significance was defined as P<0.05.
- Genotype frequencies were consistent with those observed in Caucasian ethnicity.
- Patients were categorized as responders or non-responders based on treatment outcomes.
- The study was approved by local ethical committees and patients provided signed informed consent.
Takeaway
This study looked at how certain genes might help doctors predict if chemotherapy will work for patients with liver cancer that started in the colon.
Methodology
The study analyzed thymidylate synthase polymorphisms in 80 patients with liver-only metastatic colorectal cancer who were treated with 5-fluorouracil-based chemotherapy.
Potential Biases
Potential bias due to the study being conducted on a homogeneous group of patients.
Limitations
The study's findings may not be generalizable due to the specific patient population and the focus on liver-only metastases.
Participant Demographics
Median age was 63 years, with 60% male and 40% female participants.
Statistical Information
P-Value
0.011
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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