EGFR Mutations in Lung Adenocarcinoma Linked to Nonsmokers
Author Information
Author(s): Sonobe M, Manabe T, Wada H, Tanaka F
Primary Institution: Kyoto University Hospital
Hypothesis
Are mutations in the epidermal growth factor receptor gene associated with lung adenocarcinoma in nonsmokers?
Conclusion
EGFR mutations are more common in lung adenocarcinomas of nonsmokers and are associated with specific clinico-pathological features.
Supporting Evidence
- EGFR mutations were found in 39% of the patients studied.
- Mutations were more frequent in nonsmokers (83%) compared to former smokers (50%) and current smokers (15%).
- EGFR mutations were exclusively observed in adenocarcinoma patients.
Takeaway
This study found that some lung cancer patients who never smoked have a specific gene change that might help doctors treat their cancer better.
Methodology
The study examined EGFR gene mutations in tumor specimens from 154 lung cancer patients using PCR-SSCP method.
Potential Biases
Potential bias due to the study being conducted at a single institution and only including patients who underwent surgery.
Limitations
The study only included surgically resected tumors, which may not represent the overall incidence of EGFR mutations in all NSCLC cases.
Participant Demographics
154 patients, 39% female, 61% male, with a median age of 68 years.
Statistical Information
P-Value
p<0.001
Confidence Interval
95% CI: 2.7–14.7
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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