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Radiosensitivity of Cancer Stem Cells in Lung Cancer Cell Lines
Published on: August 21, 2019
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[Non-Small Cell Lung Cancer - Development of Parallel Mechanisms of Resistance]
M Moeller1, U Siebolts2, C Wickenhauser2
1Klinik für Innere Medizin II, Krankenhaus Martha-Maria Halle-Dölau.
Pneumologie (Stuttgart, Germany)
|February 22, 2018
Summary
Acquired resistance to lung cancer drugs is common. This case shows a patient developing two resistance types simultaneously: an EGFR mutation and cancer transformation, with partial response to treatment.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Genetics
Background:
- Non-small cell lung cancer (NSCLC) frequently develops resistance to tyrosine kinase inhibitors (TKIs) within 9-12 months.
- The EGFR T790M mutation is a common cause (60%) of acquired resistance in NSCLC patients.
Observation:
- This report details a unique NSCLC case with concurrent development of two distinct resistance mechanisms.
- The patient exhibited both the EGFR T790M resistance mutation and a histological transformation to small cell neuroendocrine carcinoma.
Findings:
- The patient received Osimertinib combined with carboplatin and etoposide chemotherapy.
- A partial response of the tumor to the combined therapy was observed despite the dual resistance mechanisms.
Implications:
- This case highlights the complex resistance pathways in NSCLC, including co-occurring genetic mutations and histological changes.
- Understanding these parallel resistance mechanisms is crucial for developing more effective, personalized treatment strategies for advanced NSCLC.
- Further research is needed to explore therapeutic approaches for patients with combined resistance profiles.
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