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Updated: Apr 30, 2026

Establishment and Characterization of Three Afatinib-resistant Lung Adenocarcinoma PC-9 Cell Lines Developed with Increasing Doses of Afatinib
Published on: June 26, 2019
Erlotinib
M Steins1, M Thomas, M Geissler
1Clinic for Thoracic Diseases, University of Heidelberg, Amalienstr. 5, 69126, Heidelberg, Germany, martin.steins@med.uni-heidelberg.de.
Abstract:
The epidermal growth factor receptor (EGFR) has been implicated in a multiplicity of cancer-related signal transduction pathways such as cellular proliferation, adhesion, migration, neoangiogenesis and apoptosis inhibition, all of them are important features of cancerogenesis and tumour progression. Its tyrosine kinase activity plays a central role in mediating these processes and has been intensely studied to exploit it as a therapeutic target. Inhibitors of this pathway have been developed and assessed in trials with significant efficacy in clinical applications. The current review focuses in particular on the clinical data of EGFR tyrosine kinase inhibition in different tumour entities, preferably non-small cell lung cancer and pancreatic cancer with emphasis to the approved small molecule erlotinib. Its clinical applications, evidence-based efficacy and toxicity as well as predictive markers of response are discussed.
Insights
Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors show promise in treating cancers like lung and pancreatic cancer. Erlotinib, an approved drug, demonstrates clinical efficacy and manageable toxicity, with predictive markers guiding patient response.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Epidermal growth factor receptor (EGFR) signaling pathways are crucial in cancer development, regulating cell proliferation, migration, and survival.
- EGFR's tyrosine kinase activity is a key driver of tumorigenesis and progression, making it a significant therapeutic target.
- Targeting EGFR has led to the development of effective small molecule inhibitors for cancer treatment.
Purpose of the Study:
- To review the clinical data on EGFR tyrosine kinase inhibition in various cancers.
- To focus on the efficacy and toxicity of erlotinib, an approved EGFR inhibitor.
- To discuss predictive markers for patient response to EGFR-targeted therapies.
Main Methods:
- Review of clinical trial data for EGFR tyrosine kinase inhibitors.
- Emphasis on erlotinib in non-small cell lung cancer and pancreatic cancer.
- Analysis of clinical applications, efficacy, toxicity, and predictive biomarkers.
Main Results:
- EGFR tyrosine kinase inhibitors have demonstrated significant efficacy in clinical settings.
- Erlotinib shows clinical utility in specific tumor types, notably non-small cell lung cancer and pancreatic cancer.
- Predictive markers are essential for identifying patients likely to benefit from EGFR inhibition.
Conclusions:
- EGFR tyrosine kinase inhibition is a validated therapeutic strategy in oncology.
- Erlotinib represents an important option for patients with EGFR-driven tumors.
- Further research into predictive markers will optimize the clinical use of EGFR inhibitors.
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