PFS was defined as the length of time from randomization until documented disease progression or death from any cause, whichever occurred earlier. Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0), as a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions. Data presented until cut-off date 18 July 2008.

Intent to treat (ITT) population included all participants who were randomized during the post-chemotherapy phase.

Treatment-emergent adverse events were events between administration of study drug and up to 30 days after last dose of study drug that were absent before treatment or that worsened relative to pre-treatment state.. Number of participants who had Grade >=3TEAEs of pulmonary hemorrhage, gastrointestinal (GI) perforation, arterial thromboembolic (ATE) events, proteinuria, congestive heart failure (CHF), and hypertension were presented. Data presented up to data cutoff 18 July 2008.

Safety-evaluable enrolled participants: All participants who enrolled and received at least one dose of chemotherapy or Bevacizumab. N= Number of participants analyzed.

Treatment-related adverse events are defined as new events that occur following subject entry into the study or events that worsen following study entry state and are judged by the investigator to be possibly, probably or definitely related to study medication. Pulmonary hemorrhage, GI perforation, ATE events, proteinuria, CHF, and hypertension were prospectively identified TEAEs of grade >=3. Data presented until cut-off date 28 January 2009.

Safety-evaluable randomized Participants: All randomized Participants who received at least one complete or partial dose of Bevacizumab + Erlotinib or Bevacizumab + Placebo. N= Number of participants analyzed.

An AE is defined as any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is defined as any untoward medical occurrence that, at any dose, results in death, is life threatening, requires hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, or is a significant medical event. Data presented up to data cutoff 19 June 2009.

Safety-evaluable randomized Participants: All randomized Participants who received at least one complete or partial dose of Bevacizumab + Erlotinib or Bevacizumab + Placebo. N= Number of participants analyzed. At the time of the 28 January 2009 data cutoff, an additional 25 patients had been randomized.

Participants who experienced disease progression were discontinued from the study. Data presented up to data cutoff (18 July 2008).

Enrolled participants: All participants who were enrolled in the study. N= Number of participants analyzed.

Participants in post-chemotherapy phase were discontinued from the study for the reasons other than disease progression. Data presented Up to data cutoff 18 July 2008.

Intent to treat (ITT) population included all participants who were randomized during the post-chemotherapy phase.. N= Number of participants analyzed.

Overall survival was defined as the length of time from randomization to death.

Intent-to-treat population included all participants who were randomized during the post-chemotherapy phase.