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Spots Global Cancer Trial Database for A Phase I Trial of 5-Fluorouracil Given With 776C85 (GW776) and Low-Dose Leucovorin in Adult Patients With Solid Tumors

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Trial Identification

Brief Title: A Phase I Trial of 5-Fluorouracil Given With 776C85 (GW776) and Low-Dose Leucovorin in Adult Patients With Solid Tumors

Official Title: A Phase I Trial of 5-Fluorouracil Given With 776C85 (GW776) and Low-Dose Leucovorin in Adult Patients With Solid Tumors

Study ID: NCT00001579

Study Description

Brief Summary: This is a dose escalation study. During the first period of this study, an initial pharmacological assessment of fluorouracil administered intravenously along with oral leucovorin calcium is made. Leucovorin calcium is given orally bid on days 1-3. Fluorouracil is given as a 24 hour infusion on day 2. After a 2 week rest period and resolution of any toxicities experienced during the first period of treatment, patients are given an escalating dose of fluorouracil with fixed doses of leucovorin calcium and ethynyluracil. Ethynyluracil and leucovorin calcium are given bid orally on days 1-3 of each week. Fluorouracil is given bid orally on day 2 of each week. Treatment is repeated for three weeks followed by a one week rest period. 3 to 6 patients are enrolled at each dose level. Dose escalation proceeds until the maximum tolerated dose (MTD) is determined. MTD is defined as the dose preceding that at which 2 or more patients experience dose limiting toxicity.

Detailed Description: The primary purpose of this Phase I protocol is to develop an orally administered regimen of fluorouracil (5-FU) given with fixed doses of leucovorin (LV) and 776C85 (GW776), a mechanism-based inhibitor of dihydropyrimidine dehydrogenase (DPD), the rate-limiting enzyme involved in the catabolism of 5-FU. In the presence of 776C85, 5-FU is cleared by renal mechanisms. The schedule employed is intended to mimic the pharmacologic profile associated with a 24 hour weekly continuous infusion of 5-FU without the need for an indwelling central venous catheter. The target population is adult cancer patients with solid tumors. The first week, each patient will receive a single dose of 5-FU given by 24 hour continuous IV infusion at its recommended Phase II dose with low-dose oral LV. In the third week, the patient will begin 776C85 (GW776) and LV PO on days 1, 2, 3 at fixed doses. Oral 5-FU will be given on day 2, and the dose will be escalated in successive cohorts of patients. Treatment will be repeated weekly for three weeks, followed by a one week break. The dose of 5-FU will be adjusted according to individual tolerance. Cohorts of three patients will be entered at each dose level of 5-FU, which will be escalated until dose-limiting toxicity is seen (guidelines are outlined in the following schema). Treatment will be continued indefinitely until evidence of disease progression, provided the patient is tolerating therapy and wishes to continue. Biochemical monitoring suggests that there is profound and sustained inhibition of DPD with a single dose of 20 mg PO 776C85 days 1-3 each week for three of four weeks. Once the MTD has been defined for the once daily dosing on days 1, 2, 3 schedule, a simplified schedule will be evaluated in which a single dose of 776C85 on day 1 in the evening, with oral leucovorin days 1 and 2, and 5-FU given day 2 as a single dose. Since the pharmaceutical company has decided to go with a combined tablet of eniluracil/5-FU for future studies, the new schedule will be oral leucovorin on days 1 \& 2, with 776C85 and 5-FU both given day 2 as a single dose.

Eligibility

Minimum Age:

Eligible Ages: CHILD, ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

National Cancer Institute (NCI), Bethesda, Maryland, United States

Contact Details

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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