A Study of Tarceva (Erlotinib) in Patients With Locally Advanced or Metastatic Non-small Cell Lung Cancer Following 4 Cycles of Platinum-based Chemotherapy Without Disease Progression

This open-label, single-arm study will evaluate the safety and efficacy of Tarceva (erlotinib) in patients with locally advanced or metastatic non-small cell lung cancer who have completed 4 cycles of standard platinum-based chemotherapy without progression. Patients will receive Tarceva at a dose of 150 mg orally daily until disease progression or unacceptable toxicity occurs.