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Establishment and Characterization of Three Afatinib-resistant Lung Adenocarcinoma PC-9 Cell Lines Developed with Increasing Doses of Afatinib
Published on: June 26, 2019
Apatinib in the treatment of advanced lung adenocarcinoma with KRAS mutation
Da-Xiong Zeng1, Chang-Guo Wang1, Jian-An Huang1
1Department of Respiratory and Critical Care, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China.
Abstract:
Activating KRAS mutations in lung adenocarcinoma are characterized with treatment resistance and poor prognosis. As a small molecule inhibitor of vascular endothelial growth factor receptor-2 (VEGFR-2) tyrosine kinase, apatinib has been proven successful in advanced gastric cancer and breast cancer. In this study, we show the result of apatinib as salvage treatment in lung adenocarcinoma patients with KRAS mutation. Four advanced lung adenocarcinoma patients with KRAS mutation were orally administered apatinib (250 mg/d) after second-line treatment. One patient showed progressive disease, while 3 patients showed stable disease response to apatinib, with a median progression-free survival (PFS) of 3.8 months (1.5-5.5 months). The main toxicities were hoarseness and hemoptysis, which were manageable. Therefore, apatinib might be an optional choice for advanced lung adenocarcinoma patients with KRAS mutation in post second-line treatment.
Insights
Apatinib showed potential as a salvage treatment for advanced lung adenocarcinoma with KRAS mutations, offering stable disease in most patients after second-line therapy. This offers a new option for patients with poor prognosis.
Area of Science:
- Oncology
- Pharmacology
Background:
- Activating KRAS mutations in lung adenocarcinoma are linked to treatment resistance and poor outcomes.
- Apatinib, a VEGFR-2 inhibitor, has shown efficacy in gastric and breast cancers.
Purpose of the Study:
- To evaluate apatinib as a salvage treatment for advanced lung adenocarcinoma patients with KRAS mutations.
Main Methods:
- Four patients with advanced KRAS-mutated lung adenocarcinoma received oral apatinib (250 mg/d) post-second-line treatment.
- Disease response and progression-free survival (PFS) were monitored.
Main Results:
- One patient had progressive disease; three achieved stable disease.
- The median PFS was 3.8 months (range: 1.5-5.5 months).
- Manageable toxicities included hoarseness and hemoptysis.
Conclusions:
- Apatinib may serve as a viable salvage treatment option for advanced lung adenocarcinoma patients with KRAS mutations who have progressed after second-line therapy.
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