- Emergence of epidermal growth factor receptor T790M mutation during chronic exposure to gefitinib in a non small cell lung cancer cell line. Ogino, A., Kitao, H., Hirano, S., Uchida, A., Ishiai, M., Kozuki, T., Takigawa, N., Takata, M., Kiura, K., Tanimoto, M. Cancer Res. (2007)