• Overall response (complete response + partial response) to a combination of bavituximab plus carboplatin and paclitaxel in patients with previously untreated locally advanced or metastatic non-small-cell lung cancer [ Time Frame: one year ] [ Designated as safety issue: No ]
  

• Time to tumor progression, duration of response, overall survival and safety [ Time Frame: Approximately 1 year ] [ Designated as safety issue: No ]
  

Drug: bavituximab plus paclitaxel and carboplatin
Weekly bavituximab dose of 3 mg/kg until disease progression, and up to 6 cycles of carboplatin at a dose of AUC=5 and paclitaxel 175 mg/m2 every 21 days (21-day cycles)

Key Inclusion Criteria:

• Adults over age 18 years of age with a life expectancy of at least 3 months
• Histologically or cytologically confirmed non-small cell lung cancer at stage IIIB (with pleural effusion), stage IV, or recurrence
• Measurable disease on cross sectional imaging at least 2 cm in longest diameter (1 cm if measured by spiral CT)
• Adequate hematologic (ANC ≥ 1500 cells/µL; Hemoglobin ≥9 g/dL; platelets ≥100,000/µL and ≤500,000/µL ), renal (serum creatinine ≤ 1.5 mg/dL or calculated creatinine clearance ≥ 60 mL/min), and hepatic function (bilirubin ≤ 1.5 x ULN, ALT ≤ 3 x ULN, AST ≤ 3 x ULN)
• D-dimer ≤ 2 x ULN

Key Exclusion Criteria:

• Small cell or mixed histology
• Known history of bleeding diathesis or coagulopathy
• Any current evidence of clinically significant bleeding defined as gross hematuria, hemoptysis, or GI bleeding
• Any history of thromboembolic events (e.g., deep vein thrombosis or pulmonary thromboembolism)
• Prior chemotherapy, immunotherapy or radiotherapy to an area of measurable disease unless disease had recurred after radiotherapy
• Radiotherapy within 2 weeks preceding Study Day 1
• Symptomatic or clinically active CNS disease or metastatic lesions
• Major surgery within 4 weeks of Study Day 1
• Uncontrolled intercurrent disease (e.g., diabetes, hypertension, thyroid disease)
• Any history of angina pectoris, coronary artery disease or cerebrovascular accident, or transient ischemic attack
• A history of any condition requiring anti-platelet therapy with the exception of general cardiovascular prophylaxis with aspirin. Anti-platelet agents are prohibited during the study.
• Requirement for chronic daily treatment with NSAIDs, anti-platelet drugs, or steroids