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Establishment and Characterization of Three Afatinib-resistant Lung Adenocarcinoma PC-9 Cell Lines Developed with Increasing Doses of Afatinib
Published on: June 26, 2019
EGFR-directed therapies to treat non-small-cell lung cancer
1British Columbia Cancer Agency, Medical Oncologist, 600 W 10th Avenue, Vancouver, BC V5Z 4E6, Canada. cho@bccancer.bc.ca
Abstract:
Lung cancer is the leading cause of cancer death in men and women. In 2008, in the US > 200,000 patients were diagnosed with lung cancer and > 160,000 died from their disease. Over 80% of lung cancers are of the non-small cell type, for which chemotherapy has demonstrated modest survival benefits at all stages of disease. Agents that alter critical molecular cell growth pathways are a growing area of research and development including targeted therapies directed at the EGFR. Downstream effects of EGFR dimerization and activation include cell proliferation, differentiation and angiogenesis, key events in the malignant process. Two main classes of drugs have been developed, small molecule tyrosine kinase inhibitors (TKIs) and monoclonal antibodies directed against the extracellular domain of the receptor. This review discusses clinical studies with several new therapies and the plans for drug development.
Insights
Targeted therapies, including tyrosine kinase inhibitors (TKIs) and monoclonal antibodies, show promise for treating non-small cell lung cancer by targeting the EGFR pathway. Further clinical studies are evaluating these novel agents.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Lung cancer is a leading cause of cancer death, with over 200,000 diagnoses and 160,000 deaths in the US in 2008.
- Non-small cell lung cancer (NSCLC) accounts for over 80% of lung cancers, with chemotherapy offering modest survival benefits.
- Targeted therapies, particularly those inhibiting the Epidermal Growth Factor Receptor (EGFR) pathway, represent a growing area of research and development.
Purpose of the Study:
- To review clinical studies of new targeted therapies for lung cancer.
- To discuss drug development strategies targeting the EGFR pathway.
- To highlight the role of EGFR inhibitors in managing NSCLC.
Main Methods:
- Review of clinical studies involving targeted therapies for lung cancer.
- Analysis of drug development pipelines for EGFR-directed agents.
- Discussion of the molecular mechanisms of EGFR signaling in cancer.
Main Results:
- Two main classes of EGFR-targeting drugs have been developed: small molecule tyrosine kinase inhibitors (TKIs) and monoclonal antibodies.
- These agents target key downstream effects of EGFR activation, including cell proliferation and angiogenesis.
- Clinical studies are evaluating the efficacy and safety of these novel therapies in lung cancer patients.
Conclusions:
- Targeted therapies directed at the EGFR pathway offer a promising new avenue for lung cancer treatment.
- Continued research and clinical trials are essential to optimize the use of these agents in NSCLC.
- The development of TKIs and monoclonal antibodies represents a significant advancement in personalized lung cancer therapy.
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