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Published on: June 26, 2019
Epidermal growth factor receptor tyrosine kinase inhibitors in late stage clinical trials
Fortunato Ciardiello1, Ferdinando De Vita, Michele Orditura
1Cattedra di Oncologia Medica, Dipartimento Medico-Chirurgico di Internistica Clinica e Sperimentale F Magrassi e A Lanzará, Seconda Universitá degli Studi di Napoli, Via S. Pansini 5, 80131 Napoli, Italy. fortunato.ciardiello@unina2.it
Abstract:
The epidermal growth factor receptor (EGFR) is a cell membrane receptor that plays a key role in cancer development and progression. Ligand-activated EGFR-dependent signalling is involved in cell proliferation, apoptosis, angiogenesis and metastatic spread. Targeting the EGFR, therefore, represents a promising molecular approach in cancer treatment. Several anti-EGFR agents are in clinical development. Three drugs are currently in Phase II and III development as single agents, or in combination with other anticancer modalities: IMC-225 (cetuximab/Erbitux; ImClone), a chimaeric human-mouse monoclonal IgG(1) antibody, which blocks ligand binding and functional activation of the EGFR; OSI-774 (erlotinib/Tarceva; Genentech/OSI/Roch) and ZD1839 (gefitinib/Iressa; AstraZeneca), two small molecule EGFR-selective inhibitors of tyrosine kinase enzymatic activity, which prevent EGFR autophosphorylation and activation. Iressa is the first EGFR-targeting agent to be registered as an anticancer drug in Japan, in Australia and in the US for the third-line treatment of chemoresistant non-small cell lung cancer (NSCLC) patients. This review will focus on the preclinical background and on the results from the first series of clinical trials with these drugs. Furthermore, continuing clinical trials and a series of open clinical issues for the development of optimal strategies of using EGFR-targeting agents will be discussed.
Insights
Targeting the epidermal growth factor receptor (EGFR) shows promise in cancer treatment. This review covers preclinical data and clinical trials for novel EGFR-targeting agents like cetuximab, erlotinib, and gefitinib.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Epidermal growth factor receptor (EGFR) is crucial in cancer development and progression.
- EGFR signaling pathways regulate cell proliferation, apoptosis, angiogenesis, and metastasis.
- Targeting EGFR offers a promising molecular strategy for cancer therapy.
Purpose of the Study:
- To review the preclinical background of EGFR-targeting agents.
- To present results from early clinical trials of novel anti-EGFR drugs.
- To discuss ongoing trials and clinical issues for optimal use of EGFR inhibitors.
Main Methods:
- Review of preclinical data for EGFR-targeting agents.
- Analysis of results from Phase II and III clinical trials.
- Examination of clinical development strategies for anti-EGFR therapies.
Main Results:
- Three agents (cetuximab, erlotinib, gefitinib) are in late-stage clinical development.
- Gefitinib (Iressa) is the first EGFR-targeting drug approved for chemoresistant non-small cell lung cancer (NSCLC).
- These agents target EGFR through monoclonal antibody blockade or tyrosine kinase inhibition.
Conclusions:
- EGFR-targeting agents represent a significant advancement in molecular cancer treatment.
- Further clinical trials are essential to optimize treatment strategies.
- Addressing clinical issues will facilitate the effective use of these novel therapies.
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