Clinical Trial Testing TH-302 in Combination With Gemcitabine in Previously Untreated Subjects With Metastatic or Locally Advanced Unresectable Pancreatic Adenocarcinoma

Inclusion Criteria: * At least 18 years of age * Locally advanced unresectable or metastatic pancreatic ductal adenocarcinoma proven by histology or cytology and previously untreated with chemotherapy or systemic therapy other than: * Radiosensitizing doses of 5-fluorouracil; * Radiosensitizing doses of gemcitabine if relapse occurred at least 6 months after completion of gemcitabine; * Neoadjuvant chemotherapy if relapse occurred at least 6 months after surgical resection; * Adjuvant chemotherapy if relapse occurred at least 6 months after completion of adjuvant chemotherapy * Measurable disease (at least one target lesion outside of previous radiation fields) or non-measurable disease by RECIST v.1.1 criteria * Documentation of disease progression since any prior therapy * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. * Life expectancy of at least 3 month * Acceptable liver, renal function and acceptable hematological status * Other protocol defined inclusion criteria may apply Exclusion Criteria: * New York Heart Association (NYHA) Class III or IV congestive heart failure, myocardial infarction within 6 months prior to the date of randomization, unstable arrhythmia or symptomatic peripheral arterial vascular disease * Symptomatic ischemic heart disease * Known brain, leptomeningeal or epidural metastases (unless treated and well controlled for at least 3 months) * Previous malignancy other than pancreatic cancer in the last 5 years, except for adequately treated non-melanoma skin cancer or pre-invasive cancer of the cervix * Severe chronic obstructive or other pulmonary disease with hypoxemia * Major surgery, other than diagnostic surgery, less than or equal to 28 days prior to the date of randomization. Subject must have completely recovered from surgery * Active, uncontrolled bacterial, viral, or fungal infections, requiring systemic therapy * Treatment of pancreatic cancer with radiation therapy or surgery less than or equal to 28 days prior to the date of randomization * Prior therapy with a hypoxic cytotoxin * Subjects who participated in an investigational drug or device trial less than or equal to 28 days prior to Day 1 of the first cycle * Known infection with Human Immunodeficiency Virus (HIV), or an active infection with Hepatitis B or Hepatitis C * Subjects who have exhibited allergic reactions to a structural compound similar to TH-302 or the drug product excipients or to gemcitabine or its excipients * Other protocol defined exclusion criteria may apply