The purpose of the study is to see if sorafenib plus best supportive care (i.e in addition to the non-cancer treatments patients would normally receive) is an effective treatment for lung cancer compared to best supportive care alone. The safety and tolerability of the two treatment groups will also be compared. The goal of the study is to test the ability of sorafenib to improve survival compared to best supportive care alone.

• Drug: Nexavar (Sorafenib, BAY43-9006)
  Sorafenib 400 mg twice daily (BID)
• Drug: Placebo
  Placebo - 2 tablets twice daily (BID)

• Arm 1: Experimental
  Intervention: Drug: Nexavar (Sorafenib, BAY43-9006)
• Arm 2: Placebo Comparator
  Intervention: Drug: Placebo

Inclusion Criteria:

• Ability to understand and willingness to sign a written Informed Consent
• Advanced relapsed or refractory predominantly non squamous NSCLC. The diagnosis must have been confirmed cyto-/ histologically
• Patients must have measurable or non-measurable disease
• At least two but not more than three prior standard treatment regimens for NSCLC
• ECOG Performance Status of 0 or 1
• Male or female subjects >/= 18 years of age (>/=20 for Japan) at the time of Informed Consent
• Life expectancy of at least 12 weeks
• Ability to swallow oral medication
• Both men and women using adequate barrier birth control measures during the course of the trial and 4 weeks after the completion of trial

• Adequate bone marrow, liver and renal function as assessed by the following laboratory requirements to be conducted within 7 days prior to start of the study drug:

  • Haemoglobin > 9.0 g/dl
  • Absolute neutrophil count (ANC) >1,500/mm3
  • Platelet count >/= 100,000/µl
  • Total bilirubin </=1.5 x the upper limit of normal
  • ALT < 2.5 x upper limit of normal (</= 5 x upper limit of normal in patients with liver metastases) AST < 2.5 x upper limit of normal (</= 5 x upper limit of normal in patients with liver metastases)
  • Alkaline phosphatase < 4 x upper limit of normal (</= 5 x upper limit of normal in patients with liver metastases)
  • PT-INR or PTT < 1.5 x upper limit of normal
  • Serum creatinine < 1.5 x upper limit of normal
  • Calculated creatinine clearance of >/= 50 mL/min

Exclusion Criteria:

• NSCLC patients with predominantly squamous cell carcinoma histology

Excluded medical conditions:

• History of cardiac disease: Congestive heart failure, Active coronary artery disease (CAD), Cardiac arrhythmias (>Grade 2 NCI-CTCAE vers. 3.0)
• Uncontrolled hypertension despite two anti-hypertensive medications
• History of HIV infection or chronic hepatitis B or C
• History of organ allograft
• Active clinically serious infections (> grade 2 NCI-CTCAE vers. 3.0)
• Patients with seizure disorder requiring medication
• Patients with evidence or history of bleeding diathesis or coagulopathy
• Patients undergoing renal dialysis
• Pulmonary hemorrhage/ bleeding event >/= CTCAE grade 2 within four weeks of the first dose of the study drug
• Any other hemorrhage/ bleeding event >/= CTCAE grade 3 within four weeks of the first dose of the study drug
• Thrombotic or embolic venous or arterial events such as cerebrovascular accident
• Pregnant or breast-feeding women.
• Any condition which could affect the absorption or pharmacokinetics of the study drug