The objective is to investigate the correlation between smoking pattern and clinical efficacy of EGFR TKIs in male patients with locally advanced or metastasized non-small cell lung cancer of adeno histology who have failed 1st line chemotherapy. Health care resource usage, quality of life (EQ-5D) and practice of EGFR mutation test will also be evaluated. Current practice of EGFR mutation testing in Taiwan will be surveyed.

Inclusion Criteria:

• Male patients age 20 years or older
• Histological or cytological confirmation of NSCLC of adeno histology. If sputum is the only available sample, a second positive test is necessary for cytological confirmation
• Locally advanced or metastatic on or after first-line chemotherapy. Imaging evidence of disease progression can be either chest X ray, CT or MRI assessment on measurable lesions. If no measurable lesion is available, evaluable lesions are acceptable

Primary Care Clinic