A Phase I Trial of Combined Modality Gemcitabine Plus Radiation Therapy for Patients With Locally Advanced Unresectable Pancreatic Adenocarcinoma

Trial Information

A Phase I Trial of Combined Modality Gemcitabine Plus Radiation Therapy for Patients With Locally Advanced Unresectable Pancreatic Adenocarcinoma

OBJECTIVES: I. Determine the maximum tolerated dose of gemcitabine in combination with
radiation therapy to patients with locally advanced and/or unresectable adenocarcinoma of
the pancreas. II. Determine the dose limiting toxic effects of this combination therapy in
these patients. III. Evaluate the ability of these patients to tolerate induction and then
maintenance therapy with gemcitabine preceding and following combination therapy. IV.
Evaluate the efficacy (response rate, pattern of failure, and survival) of this combination
therapy in these patients.

OUTLINE: This is a dose escalation study of gemcitabine. Part I: Patients receive
gemcitabine as a continuous infusion over 30 minutes once weekly for 3 weeks followed by 1
week of rest. Part II: Gemcitabine IV is administered as a 30 minute infusion twice a week
(Monday and Thursday) for 5-6 weeks. Patients receive radiation therapy 5 days a week for
5-6 weeks. In the absence of dose-limiting toxicity (DLT) in the first 6 patients treated,
subsequent cohorts of 6 patients each receive escalating doses of gemcitabine on the same
schedule. If DLT occurs in 2 of 6 patients at a given dose level, then dose escalation
ceases and the next lower dose is declared the maximum tolerated dose. Part III: In the
absence of toxicity and disease progression, patients continue gemcitabine for 3 additional
courses. Maintenance gemcitabine starts 4 weeks after the completion of radiation therapy
and is administered once weekly for 3 weeks followed by 1 week of rest. Patients are
followed until death.

PROJECTED ACCRUAL: This study will accrue 15-30 patients in approximately 24 months.