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Updated: Jun 6, 2026

Establishment and Characterization of Three Afatinib-resistant Lung Adenocarcinoma PC-9 Cell Lines Developed with Increasing Doses of Afatinib
Published on: June 26, 2019
[Target therapy of gefitinib in advanced adenocarcinoma of the lung]
Hua Zheng1, Jingping Wang, Qiyi Meng
1General Department, Beijing Thoracic Tumor and Tuberculosis Hospital, Beijing 101149, P.R.China.
Background:
Gefitinib is an epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor which is used to treat advanced non-small cell lung cancer, especially adenocarcinoma. The aim of this study is to evaluate the efficacy, side effects and prognostic factors of gefitinib in adenocarcinoma of the lung.
Methods:
A total of 26 patients with advanced adenocarcinoma of the lung were enrolled in the study. Gefitinib was orally administered 250mg once daily until disease progression or the occurrence of intolerable toxicity. They were evaluated regularly and their survival was analyzed.
Results:
In 26 patients, there was 1 with complete regression (3.8%), 11 with partial response (42.3%), 9 with stable disease (34.6%) and 5 with progression of disease (19.2%). The objective response rate was 46.2% and the disease control rate was 80.8%. The median progression-free survival time was 8.2 months and the median overall survival time was 10.4 months. The 1-year survival rate was 31.6%. Age ( < 70 years old), skin rash and CEA decrease were significantly related to longer survival, however, times of prior chemotherapy and gefitinib treatment stage did not influence the survival. Mean PS (ECOG) was 3.0 before treatment, and 1.8 after treatment. Mean symptom relief time was 5.2 days.
Conclusions:
Gefitinib is an effective target drug with slight side effect. It can significantly improve quality of life of patients with adenocarcinoma. It can be used as first-line therapy to patients who are not suitable for chemotherapy.
Insights
Gefitinib effectively treats advanced lung adenocarcinoma, improving survival and quality of life with manageable side effects. Key prognostic factors for longer survival include younger age, skin rash, and decreased CEA levels.
Area of Science:
- Oncology
- Pharmacology
Context:
- Gefitinib is an epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor.
- It is used for advanced non-small cell lung cancer, particularly adenocarcinoma.
Purpose:
- Evaluate the efficacy of gefitinib in lung adenocarcinoma.
- Assess side effects and identify prognostic factors for gefitinib treatment.
Summary:
- A study of 26 patients with advanced lung adenocarcinoma showed an objective response rate of 46.2% and a disease control rate of 80.8% with gefitinib.
- Median progression-free survival was 8.2 months, and median overall survival was 10.4 months.
- Younger age, skin rash, and decreased CEA levels were associated with improved survival.
Impact:
- Gefitinib demonstrates effectiveness as a targeted therapy for lung adenocarcinoma.
- It offers a viable treatment option with mild side effects, improving patient quality of life.
- Gefitinib can be considered first-line therapy for patients unsuitable for chemotherapy.
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