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Updated: May 28, 2026

Ultra-Fast Amplicon-Based Next-Generation Sequencing in Non-Squamous Non-Small Cell Lung Cancer
Published on: September 8, 2023
New strategies for treatment of ALK-rearranged non-small cell lung cancers
1Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA.
Abstract:
The identification of oncogenic alterations in subsets of patients with non-small cell lung cancer (NSCLC) is transforming clinical care. Genomic rearrangements in anaplastic lymphoma kinase (ALK) are detected in 3% to 7% of patients with NSCLC. The ALK tyrosine kinase inhibitor crizotinib has demonstrated clinical efficacy in ALK-rearranged NSCLC patients and was recently approved by the U.S. Food and Drug Administration. Crizotinib is currently under additional phase III clinical development as both initial and second-line therapy for advanced ALK-rearranged NSCLC. However, new challenges in the diagnosis and treatment of this subset of NSCLC have emerged, including the need to determine the most effective means of diagnosing ALK-rearranged NSCLC and the emergence of acquired drug resistance to crizotinib. In this review, we discuss current strategies for treatment and diagnosis, as well as the current knowledge about mechanisms of acquired resistance to crizotinib. Finally, we discuss the strategies that are underway to clinically overcome acquired drug resistance.
Insights
Anaplastic lymphoma kinase (ALK) rearrangements in non-small cell lung cancer (NSCLC) are treatable with crizotinib. This review covers diagnosis, treatment, and overcoming acquired resistance to ALK inhibitors.
Area of Science:
- Oncology
- Genetics
- Pharmacology
Background:
- Oncogenic alterations are revolutionizing non-small cell lung cancer (NSCLC) care.
- Anaplastic lymphoma kinase (ALK) gene rearrangements occur in 3-7% of NSCLC patients.
- Crizotinib, an ALK tyrosine kinase inhibitor, is approved for ALK-rearranged NSCLC.
Purpose of the Study:
- To review current diagnostic and treatment strategies for ALK-rearranged NSCLC.
- To discuss mechanisms of acquired resistance to crizotinib.
- To explore strategies for overcoming acquired resistance to ALK inhibitors.
Main Methods:
- Literature review of diagnostic and treatment approaches for ALK-rearranged NSCLC.
- Analysis of current knowledge on acquired resistance mechanisms to crizotinib.
- Discussion of emerging clinical strategies to overcome drug resistance.
Main Results:
- Crizotinib shows clinical efficacy in ALK-rearranged NSCLC.
- Challenges include optimal diagnosis and managing acquired resistance.
- Understanding resistance mechanisms is crucial for developing new therapies.
Conclusions:
- Effective diagnosis and treatment of ALK-rearranged NSCLC are critical.
- Acquired resistance to crizotinib presents a significant clinical challenge.
- Ongoing research aims to develop strategies to overcome resistance and improve patient outcomes.
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