Side effects during chemotherapy predict tumor response in advanced colorectal cancer
Author Information
Author(s): Schuell B, Gruenberger T, Kornek G V, Dworan N, Depisch D, Lang F, Schneeweiss B, Scheithauer W
Primary Institution: University Hospital, Vienna, Austria
Hypothesis
Is there a relationship between chemotherapy-associated adverse events and treatment efficacy in advanced colorectal cancer?
Conclusion
The occurrence of side effects during chemotherapy in advanced colorectal cancer is an independent and reliable prognostic indicator for response and survival.
Supporting Evidence
- Patients with more side effects had a higher chance of treatment success.
- The median survival increased with the number of adverse events experienced.
- An odds ratio of 1.342 indicates a 34% increase in the odds of no progressive disease with each additional side effect.
Takeaway
If patients have more side effects during chemotherapy, it might mean the treatment is working better for them.
Methodology
The study analyzed toxicity, objective response, and survival data of 303 patients with advanced colorectal cancer treated in four different chemotherapy protocols.
Potential Biases
Potential reporting bias in subjective symptoms may exist.
Limitations
The study may not generalize to all chemotherapy regimens as it focused on specific combinations.
Participant Demographics
303 patients (190 men and 113 women) aged 19 to 75 with advanced colorectal cancer.
Statistical Information
P-Value
0.0001
Confidence Interval
95% CI, 3–7
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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