Epidermal growth factor receptor first generation tyrosine-kinase inhibitors
Alex Martinez-Marti1, Alejandro Navarro1, Enriqueta Felip1
1Medical Oncology Department, Vall d'Hebron University Hospital and Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain.
Abstract:
The epidermal growth factor receptor (EGFR) oncogene was positioned as an attractive target for drug development in non-small cell lung cancer (NSCLC). Gefitinib and erlotinib were the first two reversible inhibitors of the EGFR kinase. The discovery of EGFR kinase domain-activating mutations that significantly correlated with a high likelihood of response to EGFR tyrosine-kinase inhibitors (TKIs) allowed to design studies to test these drugs as potential first-line therapies. In the same way, the feasibility of personalized medicine was established in patients with advanced NSCLC. Currently in the field of NSCLC with EGFR mutation have developed second and even third generation TKIs that would be gaining the positioning in the treatment of this subset population of NSCLC. In spite of this, without the knowledge that EGFR first generation TKIs have provided, we would not have gotten so far. We will review step by step how it was forged the exciting history of the subpopulation of lung cancer with EGFR mutated, through the various clinical trials performed with first generation TKIs that changed the focus, the future of NSCLC as well as survival of these patients.
Insights
First-generation EGFR tyrosine-kinase inhibitors (TKIs) revolutionized non-small cell lung cancer (NSCLC) treatment. Their success paved the way for personalized medicine and advanced TKIs in EGFR-mutated NSCLC.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Epidermal growth factor receptor (EGFR) is a key target in non-small cell lung cancer (NSCLC).
- Gefitinib and erlotinib were the first EGFR kinase inhibitors developed.
- Discovery of EGFR mutations predicted response to EGFR tyrosine-kinase inhibitors (TKIs).
Purpose of the Study:
- To review the history of EGFR-mutated NSCLC treatment.
- To highlight the impact of first-generation EGFR TKIs.
- To demonstrate the evolution towards personalized medicine in NSCLC.
Main Methods:
- Review of clinical trials involving first-generation EGFR TKIs.
- Analysis of the impact of EGFR mutations on treatment response.
- Historical perspective on the development of EGFR-targeted therapies.
Main Results:
- First-generation EGFR TKIs established personalized medicine in EGFR-mutated NSCLC.
- These initial therapies significantly improved patient survival.
- The success of early TKIs led to the development of subsequent generations of drugs.
Conclusions:
- First-generation EGFR TKIs were pivotal in advancing NSCLC treatment.
- Understanding EGFR mutations enabled targeted therapy and personalized medicine.
- The legacy of these early drugs continues to shape current and future NSCLC therapies.
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