A Phase II Trial of Afatinib(BIBW 2992) in Third-line Treatment for Patients With Stage IIIB/IV Adenocarcinoma of the Lung Harbouring Wild-type Epidermal Growth Factor Receptor[EGFR]

Inclusion criteria:

1. Pathologically confirmed stage IIIB/IV adenocarcinoma in non-small cell lung cancer\[NSCLC\]
2. Progressive disease following a second-line cytotoxic chemotherapy including at least one platinum-containing regimen
3. A known wild-type EGFR status
4. Patients 18 years of age or older

Exclusion criteria:

1. More than two prior cytotoxic chemotherapy treatment regimens for relapsed or metastatic disease
2. Prior treatment with EGFR targeting small molecules or antibodies
3. Radiotherapy or surgery within 4 weeks prior to study entry
4. Active brain metastasis
5. Known pre-existing interstitial lung disease
6. History or presence of clinically relevant cardiovascular abnormalities
7. Cardiac left ventricular function with resting ejection fraction of less than 50%
8. Absolute neutrophil count\[ANC\] \< 1,500/mm3
9. Platelet count \<100,000/mm3
10. Creatinine clearance\<60ml/min or serum creatinine \>1.5 times upper limit of normal
11. Women of childbearing potential, or men who are able to father a child, unwilling to use a medically acceptable method of contraception during the trial
12. Pregnancy or breast-feeding