Inclusion Criteria:

• Is the patient 18 years of age or older.
• Does the patient have histologically or cytologically proven carcinoma of the pancreas
• Is the tumor unresectable or medically inoperable
• Does the patient have a Zubrod performance status of ≤ 2 (appendix I).
• Does the patient have an absolute neutrophil count of ≥ 1500/mm3, and platelets ≥ 100,000/mm3
• Does the patient have adequate renal function (creatinine < 2 mg/dl) and hepatic function (bilirubin < 3 mg/dl), with relief of biliary obstruction if present
• Is the patient free of significant co-morbid conditions that would preclude safe administration or completion of protocol therapy
• If the patient is of reproductive potential, has he or she agreed to use an effective method of contraception during treatment on this trial and for 6 months after treatment
• Is the patient aware of the investigational nature of the therapy such that they can provide written informed consent

Exclusion Criteria:

• Does the patient have a neuroendocrine tumor of the pancreas
• Does the patient have metastatic disease
• Does the patient have a history of abdominal radiation therapy
• Is there history of more than 1 month of therapy with single agent gemcitabine
• Has the patient used any investigational agent in the month before enrollment into the study