Primary Objective:
\- To evaluate the efficacy of CS-1008 administered in combination with gemcitabine to chemotherapy naive subjects with unresectable or metastatic pancreatic cancer, based on the progression-free survival at 16 weeks.
Secondary Objectives:
* To evaluate the efficacy of CS-1008 administered in combination with gemcitabine on overall progression-free survival rate, objective response rate, duration of response, and overall survival.
* To determine the pharmacokinetics of BIP CS-1008 and DSC CS-1008.
* To study potential biomarkers of CS-1008 activity
* To assess possible human anti-human antibody formation after exposure to CS-1008
* To evaluate the safety profile of CS-1008 when administered in combination with gemcitabine to chemotherapy naive subjects with unresectable or metastatic pancreatic cancer.
