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An update of ALK inhibitors in human clinical trials
Eason Leong Yin Chan1, Claudia Ho Yi Chin1, Vivian Wai Yan Lui1,2
1Pharmacogenomics & Precision Therapeutics Laboratory, Department of Pharmacology & Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR.
Abstract:
The proto-oncogenic ALK is a druggable receptor tyrosine kinase for cancer treatment. Two small molecule inhibitors of ALK, crizotinib and ceritinib, have been recently approved for the treatment of metastatic non-small-cell lung cancer, with marked improvement of progression-free survival of patients. Independent case reports also indicate their potential therapeutic activity in other ALK-rearranged cancers. Numerous single-agent and combination therapy trials are ongoing in lung and many other cancers. Results of these trials are greatly anticipated. Here, we summarize our current understanding of ALK signaling, genomic aberrations in cancer and emerging mechanisms of drug resistance. We will also provide a timely review on all ALK inhibitors and their current status of development in clinical settings.
Insights
Anaplastic Lymphoma Kinase (ALK) inhibitors like crizotinib show promise in treating metastatic non-small-cell lung cancer and other ALK-rearranged cancers, with ongoing trials exploring their full potential.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Anaplastic Lymphoma Kinase (ALK) is a proto-oncogenic receptor tyrosine kinase implicated in various cancers.
- Approved ALK inhibitors (crizotinib, ceritinib) have improved progression-free survival in metastatic non-small-cell lung cancer.
- ALK aberrations are also found in other cancer types, suggesting broader therapeutic potential.
Purpose of the Study:
- To review current understanding of ALK signaling pathways in cancer.
- To summarize genomic aberrations involving ALK in tumorigenesis.
- To provide a comprehensive overview of ALK inhibitors and their clinical development status.
Main Methods:
- Literature review of ALK signaling, genomic alterations, and drug resistance mechanisms.
- Analysis of clinical trial data for ALK inhibitors.
- Synthesis of information on approved and investigational ALK-targeted therapies.
Main Results:
- Crizotinib and ceritinib are approved for ALK-positive metastatic non-small-cell lung cancer.
- Case reports suggest efficacy in other ALK-rearranged malignancies.
- Numerous trials are evaluating ALK inhibitors as single agents and in combination therapies.
Conclusions:
- ALK remains a critical therapeutic target in oncology.
- Emerging resistance mechanisms require further investigation.
- Ongoing clinical trials are crucial for defining the future role of ALK inhibitors in cancer treatment.
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