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RATIONALE: Drugs used in chemotherapy, such as fluorouracil and gemcitabine, work in different ways to stop tumor cells from dividing so they stop growing or die. Radiation therapy uses high-energy x-rays to damage tumor cells. Fluorouracil may make the tumor cells more sensitive to radiation therapy. Brachytherapy uses radioactive material, such as phosphorus P32, placed directly into or near a tumor to kill tumor cells. Combining chemotherapy and external-beam radiation therapy with brachytherapy may kill more tumor cells.
PURPOSE: This randomized clinical trial is studying fluorouracil, gemcitabine, external-beam radiation therapy, and brachytherapy using phosphorus P32 to see how well they work compared to fluorouracil, gemcitabine, and external-beam radiation therapy in treating patients with locally or regionally advanced unresectable adenocarcinoma of the pancreas (pancreatic cancer).
- Compare the survival of patients with locally or regionally advanced unresectable adenocarcinoma of the pancreas treated with fluorouracil, external beam radiotherapy, and gemcitabine with vs without brachytherapy with phosphorus P32 suspension.
- Compare time to disease progression, tumor response rate, and physical performance in patients treated with these regimens.
- Compare the safety and tolerability of these regimens in this patient population.
- Compare duration of response and time to treatment failure in patients treated with these regimens.
OUTLINE: This is a randomized study. Patients are randomized to 1 of 2 treatment arms.
- Arm I: Patients receive phosphorus P32 suspension percutaneously under CT guidance on day 0 and at months 1, 2, 6, 7, and 8. Patients receive fluorouracil IV continuously on days 1-5 of weeks 1-6. Patients concurrently undergo external beam radiotherapy 5 days a week on weeks 1-6. At the completion of radiotherapy, patients receive gemcitabine IV over 30 minutes once weekly for 7 weeks. After a 1-week rest, patients then receive gemcitabine IV over 30 minutes once weekly for 3 weeks. Treatment repeats every 28 days.
- Arm II: Patients receive fluorouracil and gemcitabine and undergo external beam radiotherapy as in arm I.
In both arms, treatment continues in the absence of disease progression or unacceptable toxicity.
Patients are followed every 3 months.
PROJECTED ACCRUAL: A total of 80 patients (40 per treatment arm) will be accrued for this study within 24-30 months.
Allocation: Randomized, Control: Active Control, Primary Purpose: Treatment
fluorouracil, gemcitabine hydrochloride, brachytherapy, phosphorus P32, radiation therapy
USF Physician's Group
Active, not recruiting
National Cancer Institute (NCI)
Published on BioPortfolio: 2014-08-27T03:54:31-0400
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Unstable isotopes of phosphorus that decay or disintegrate emitting radiation. P atoms with atomic weights 28-34 except 31 are radioactive phosphorus isotopes.
Preliminary cancer therapy (chemotherapy, radiation therapy, hormone/endocrine therapy, immunotherapy, hyperthermia, etc.) that precedes a necessary second modality of treatment.
Organs which might be damaged during exposure to a toxin or to some form of therapy. It most frequently refers to healthy organs located in the radiation field during radiation therapy.
Stable phosphorus atoms that have the same atomic number as the element phosphorus, but differ in atomic weight. P-31 is a stable phosphorus isotope.
Drugs used to protect against ionizing radiation. They are usually of interest for use in radiation therapy but have been considered for other, e.g. military, purposes.
In a clinical trial or interventional study, participants receive specific interventions according to the research plan or protocol created by the investigators. These interventions may be medical products, such as drugs or devices; procedures; or change...
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