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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
Personalized treatment of EGFR mutant and ALK-positive patients in NSCLC
Aswin Somasundaram1, Mark A Socinski, Timothy F Burns
1Lung Cancer Program, University of Pittsburgh Cancer Institute , Pittsburgh, PA , USA.
Introduction:
The epidermal growth factor receptor (EGFR) is mutated in 15% of adenocarcinomas of the lung. In addition, the anaplastic lymphoma kinase (ALK) is altered in 8% of adenocarcinomas of the lung. Treatment of EGFR mutant and ALK translocation-positive tumors in NSCLC with tyrosine kinase inhibitors (TKI) results in a dramatic therapeutic response and has revolutionized therapy. Unfortunately, resistance to TKIs invariably develops. Many promising new therapies are under investigation to overcome the resistance.
Areas Covered:
We analyzed the current primary literature and recent national meetings to evaluate the clinical characteristics and therapeutic implications of relevant treatments for EGFR mutant and ALK-positive NSCLC in the first-line, acquired resistance, and adjuvant settings.
Expert Opinion:
Treatment with EGFR TKIs in the first-line setting of EGFR mutant NSCLC results in a significant clinical benefit. Several promising third generation EGFR TKIs are being evaluated in Phase II and III trials in the acquired resistance setting. Crizotinib is superior to chemotherapy in the first-line setting for ALK-positive NSCLC. Ceritinib is effective and approved for ALK-positive NSCLC in the acquired resistance setting. Continued investigation is needed to develop novel therapies to overcome acquired resistance to TKIs.
Insights
Tyrosine kinase inhibitors (TKIs) offer significant benefits for non-small cell lung cancer (NSCLC) with EGFR mutations or ALK alterations. However, acquired resistance necessitates ongoing research into novel therapies to improve patient outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Epidermal growth factor receptor (EGFR) mutations occur in 15% of lung adenocarcinomas.
- Anaplastic lymphoma kinase (ALK) alterations are found in 8% of lung adenocarcinomas.
- Tyrosine kinase inhibitors (TKIs) have revolutionized non-small cell lung cancer (NSCLC) treatment but acquired resistance is common.
Purpose of the Study:
- To evaluate clinical characteristics and therapeutic implications of treatments for EGFR mutant and ALK-positive NSCLC.
- To assess treatments in first-line, acquired resistance, and adjuvant settings.
- To review current literature and national meeting data.
Main Methods:
- Literature review
- Analysis of national meeting data
- Evaluation of clinical characteristics and therapeutic implications
Main Results:
- EGFR TKIs provide significant clinical benefit in the first-line treatment of EGFR-mutant NSCLC.
- Crizotinib demonstrates superiority over chemotherapy for ALK-positive NSCLC in the first-line setting.
- Third-generation EGFR TKIs and ceritinib show promise in acquired resistance settings for ALK-positive NSCLC.
Conclusions:
- First-line EGFR TKI treatment offers substantial benefit for EGFR-mutant NSCLC.
- Third-generation EGFR TKIs are under investigation for acquired resistance.
- Novel therapies are crucial for overcoming acquired resistance to TKIs in NSCLC.
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