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ERBB2-Mutated Metastatic Non-Small Cell Lung Cancer: Response and Resistance to Targeted Therapies.
ERBB2-Mutated Metastatic Non-Small Cell Lung Cancer: Response and Resistance to Targeted Therapies. Journal of thoracic oncology Chuang, J. C., Stehr, H., Liang, Y., Das, M., Huang, J., Diehn, M., Wakelee, H. A., Neal, J. W. 2017Abstract
Erb-b2 receptor tyrosine kinase 2 gene (ERBB2) (also called HER2) has long been recognized as an oncogenic driver in some breast and gastroesophageal cancers in which amplification of this gene confers sensitivity to treatment with Erb-b2 receptor tyrosine kinase 2 (ERBB2)-directed agents. More recently, somatic mutations in ERBB2 have been reported in 1% to 2% of patients with lung adenocarcinoma. Previous case series have suggested clinical tumor responses using anti-ERBB2 small molecules and antibody therapies.Here we report the outcomes of nine patients with metastatic lung adenocarcinoma with ERBB2 mutations being treated with ERBB2-targeted therapies.Four of the nine patients had response to targeted therapies, with durations of response ranging from 3 to 10 months. We identified a de novo phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha gene (PIK3CA) mutation and ERBB2 copy number gain as potential resistance mechanisms.We showed patients with ERBB2-mutated lung adenocarcinoma can respond to targeted therapies, and we identified potential resistance mechanisms upon progression to targeted therapies.
View details for DOI 10.1016/j.jtho.2017.01.023
View details for PubMedID 28167203