Erlotinib in Women With Previously Untreated Adenocarcinoma of the Lung

Inclusion Criteria: Female Diagnosis of adenocarcinoma of the lung Patient has had at least one core biopsy of her tumor Must be willing to undergo epidermal growth factor receptor (EGFR) mutation testing of her tumor Stage four (IV) or three (III) B non-small cell lung cancer Non-smoker or former smoker. Non-smoker is defined as a person who smoked 100 or less cigarettes in her lifetime while a former smoker is defined as a person who has quit smoking one or more years ago. Three or more weeks since last radiation therapy Three or more weeks since last major surgery Must at least be able to walk and capable of taking care of herself although unable to carry out work activities Life expectancy of 8 weeks or more Blood tests that show kidneys, liver and bone marrow to be working adequately Women of child-bearing potential must agree to use adequate contraception prior to study entry and for the entire time enrolled in study Exclusion Criteria: Prior exposure to Tarceva (OSI-774, erlotinib) Uncontrolled central nervous system problems Prior chemotherapy regimen Difficulty swallowing A disease or disorder that interferes with ability to digest and absorb food Incomplete healing of previous oncologic or other major surgery Significant medical history or unstable medical condition such as heart failure, active infection, uncontrolled high blood pressure Pregnant or breast feeding A medical condition that could make it unsafe for patient to participate in this study