See Termination Reason in Detailed Description

To assess the efficacy and safety of PF-3512676 administered in combination with gemcitabine/cisplatin chemotherapy as first-line treatment in patients with locally advanced or metastatic Non-Small-Cell Lung Cancer (NSCLC) and to compare it to the efficacy and safety of gemcitabine/cisplatin alone.

PF-3512676 dosing was stopped 20 June 2007 in response to DSMC recommendation to close the trial, citing lack of efficacy concerns as the primary reason with a safety issue (thrombocytopenia) also contributing to the decision. Subjects were allowed to complete standard of care treatment/survival follow-up. Data collection was completed on 25 June 2008.

Inclusion Criteria:

• Advanced Non-Small-Cell Lung Cancer (NSCLC) stage IIIB with pleural effusion or stage IV
• No prior systemic treatment for Non-Small-Cell Lung Cancer (NSCLC) with chemotherapy, immunotherapy, biologic response modifiers or other investigational drugs
• Eastern Cooperative Oncology Group Performance Status (ECOG PS) 0 or 1

Exclusion Criteria:

• Small cell or carcinoid lung cancer
• Known Central Nervous System (CNS) metastasis
• Pre-existing auto-immune or antibody mediated diseases