A Phase II, Open Label Study of Erlotinib (Tarceva) in Previously Treated Subjects With Advanced Non-Small Cell Lung Cancer

Inclusion Criteria:

1. The patient has a diagnosis of pathologically confirmed NSCLC by tumor biopsy and/or
fine-needle aspiration.

2. The patient has a diagnosis of either stage IIIB, stage IV, or advanced, incurable
NSCLC, and failed at least one front-line metastatic NSCLC chemotherapy regimen.
(Patients who have failed adjuvant or locally advanced therapy within 6 months are
also eligible to participate in study).

3. The patient has uni-dimensionally measurable NSCLC.

4. Karnofsky performance status >/= 60 or ECOG performance status 0-2

5. The patient has biopsy accessible tumor.

6. The patient has adequate hematologic function as defined by an absolute neutrophil
count (ANC) >/= 1,500/mm^3, platelet count >/= 100,000/mm^3, WBC >/= 3,000/ mm^3, and
hemoglobin >/= 9 g/dL.

7. The patient has adequate hepatic function as defined by a total bilirubin level 1.5 X the upper limit of normal, and alkaline phosphatase, AST or ALT upper limit of normal.

8. The patient has adequate renal function as defined by a serum creatinine level 1.5 mg/dL or a calculated creatinine clearance of >/= 60cc/minute.

9. The patient has PT < 1.5 x upper limit of normal

10. If patient has brain metastasis, they must have been stable (treated or asymptomatic)
for at least 4 weeks after radiation, if treated with radiation, and not have used
steroids for at least 1 week. Re-imaging performed after 2 weeks, upon completion of
radiation therapy.

11. The patient is >/= 18 years of age.

12. The patient has signed informed consent.

13. The patient is eligible if disease free from a previously treated malignancy, other
than a previous NSCLC, for greater than two years. Patients with a history of prior
basal cell carcinoma of the skin or pre-invasive carcinoma of the cervix are exempt
from exclusion.

14. Women of childbearing potential must agree to use adequate contraception (hormonal or
barrier method of birth control; abstinence) prior to study entry and for the
duration of tudy participation. Childbearing potential will be defined as women who
have had menses within the past 12 months,who have not had tubal ligation or
bilateral oophorectomy.Should a woman become pregnant or suspect that she is pregnant
while participating in this study,she should inform her treating physician
immediately.The patient,if a man,agrees to use effective contraception or abstinence.

15. Subject must be considered legally capable of providing his or her own consent for
participation in this study.

Exclusion Criteria:

1. The patient has received prior investigational therapy, chemotherapy, surgery, or
radiotherapy within 4 weeks of initiating study drug

2. The patient has undergone prior thoracic or abdominal surgery within 28 days of study
entry, excluding prior diagnostic biopsy.

3. The patient has received radiation therapy to the measurable tumor within 6 months.
Patients are allowed to have local irradiation for the management of tumor-related
symptoms (bones, brain). However, if a patient has active new disease growing in the
previously irradiated site, the patient will be eligible to participate in the study.

4. The patient has a significant medical history or unstable medical condition (unstable
systemic disease: congestive heart failure (New York Heart Association Functional
Classification class II or worse), recent myocardial infarction within 3 months,
unstable angina, active infection (i.e. currently treated with antibiotics,
uncontrolled hypertension). Patients with controlled diabetes will be allowed.
Patient must be able to undergo procedure for tissue acquisition.

5. The patient has uncontrolled seizure disorder, active neurologic disease, or
neuropathy >/= grade 2. Patients with meningeal or CNS involvement by tumor are
eligible for the study if the above exclusion criteria are not met.

6. The patient is pregnant (confirmed by serum b-HCG if applicable) or is breastfeeding.

7. Any condition that is unstable or could jeopardize the safety of the patient and its
compliance in the study, in the investigator's judgment.

8. The patient is actively taking herbal remedies or over-the-counter biologics (e.g.,
shark cartilage, high dose antioxidants).

9. Patients will be allowed to have prior biologic (i.e. VEGF, EGFR, etc.) therapy.
However, the patient will be excluded from a given study if he/she has received the
same therapy as the clinical trial (i.e. If a patient has been previously treated
with bevacizumab, they are allowed to enroll in any of the 4 studies. If a patient
has been previously treated with erlotinib, they are excluded from the clinical
trials with erlotinib). In addition, if a patient has been previously treated with
gefitinib (Iressa), they are excluded from the clinical trials with erlotinib.

10. The patient has dysphagia. A patient who is unable to swallow intact capsules must be
able to swallow capsules dissolved in water.

11. The patient has active gastrointestinal disease or a disorder that alters
gastrointestinal motility or absorption (i.e., lack of integrity of the
gastrointestinal tract such as a significant surgical resection of the stomach or
small bowel).