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Establishing Dual Resistance to EGFR-TKI and MET-TKI in Lung Adenocarcinoma Cells In Vitro with a 2-step Dose-escalation Procedure
Published on: August 11, 2017
EGFR inhibition in NSCLC: New findings…. and opened questions?
Francesco Passiglia1, Angela Listì1, Marta Castiglia1
1Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy.
Abstract:
The targeted inhibition of epidermal growth factor receptor (EGFR) has represented a milestone in the treatment of lung cancer. Several studies convincingly and consistently demonstrated a significant superiority of EGFR-TKIs over standard platinum-chemotherapy in EGFR-mutated NSCLC patients, leading to the sequential approval of gefitinib, erlotinib and afatinib as new standard first-line clinical treatment. To date we are witnessing a second revolution in the management of EGFR-positive NSCLC thanks to the development of new treatment strategies aiming to overcome acquired resistance to TKIs and ultimately improve patients' outcomes. In this review we summarize the most important recent findings regarding EGFR-inhibition in NSCLC, highlighting the current unsolved questions on the selection of the best TKI in first-line, which therapy can be combined with upfront EGFR-TKIs, how to overcome acquired resistance, and which are the clinical applications of liquid biopsy.
Insights
Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) are revolutionizing lung cancer treatment. This review explores advancements in EGFR-targeted therapies, resistance mechanisms, and future directions for non-small cell lung cancer (NSCLC) management.
Area of Science:
- Oncology
- Pharmacology
Background:
- Targeted inhibition of the epidermal growth factor receptor (EGFR) has transformed non-small cell lung cancer (NSCLC) treatment.
- EGFR tyrosine kinase inhibitors (TKIs) demonstrate superior efficacy compared to chemotherapy in EGFR-mutated NSCLC.
- Gefitinib, erlotinib, and afatinib are established first-line treatments for EGFR-mutated NSCLC.
Purpose of the Study:
- To review recent advancements in EGFR-targeted therapies for NSCLC.
- To address challenges in first-line TKI selection and combination therapies.
- To explore strategies for overcoming acquired resistance to EGFR-TKIs and discuss liquid biopsy applications.
Main Methods:
- Literature review of recent findings on EGFR inhibition in NSCLC.
- Analysis of clinical data on EGFR-TKIs efficacy and resistance patterns.
- Discussion of emerging treatment strategies and diagnostic tools like liquid biopsy.
Main Results:
- EGFR-TKIs have become standard first-line treatment for EGFR-mutated NSCLC.
- Acquired resistance to EGFR-TKIs is a significant clinical challenge.
- Liquid biopsy shows promise for monitoring treatment response and guiding therapy.
Conclusions:
- Ongoing research focuses on optimizing first-line TKI selection and combination therapies.
- Developing strategies to overcome acquired resistance is crucial for improving patient outcomes.
- Liquid biopsy holds potential for personalized NSCLC management.
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