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  • Title: Hepatic arterial floxuridine and leucovorin for unresectable liver metastases from colorectal carcinoma. New dose schedules and survival update.
    Author: Kemeny N, Seiter K, Conti JA, Cohen A, Bertino JR, Sigurdson ER, Botet J, Chapman D, Mazumdar M, Budd AJ.
    Journal: Cancer; 1994 Feb 15; 73(4):1134-42. PubMed ID: 8313315.
    Abstract:
    BACKGROUND: We studied three new dose schedules of hepatic arterial infusion of floxuridine (FUDR) and leucovorin and update survival analysis of a previously reported trial using these drugs by hepatic arterial infusion for patients with hepatic metastases from colorectal carcinoma. METHODS: Untreated patients with hepatic metastases from colorectal cancer were treated with three dose schedules: Group D, FUDR (0.3 mg/kg/day) and leucovorin (30 mg/m2/day) as a 14-day continuous infusion through an implantable hepatic arterial pump alternating with a 4-week rest period; Group E, a lower dose of FUDR (0.25 mg/kg/day) and leucovorin (30 mg/m2/day) as a 14-day infusion alternating with 2 weeks of saline; and Group F, FUDR (0.3 mg/kg/day) with a lower leucovorin dose (15 mg/m2/day) for 2 weeks followed by a 2-week rest. RESULTS: In 42 patients with unresectable hepatic metastases, the complete-plus-partial response rate was 56%, with a median survival of 24.2 months. Complete-plus-partial response rates for groups D, E, and F were 30%, 54%, and 75%, respectively. Twelve percent of the 42 patients developed biliary sclerosis; the percentages of patients per group were 17%, 15%, and 6%, respectively. Updated median survival of the original 24 patients treated with FUDR and leucovorin by hepatic arterial infusion and these 42 new patients (66 total) was 28.8 months. One-, two-, three-, four-, and five-year survival rates were 86%, 62%, 31%, 15%, and 7%, respectively. CONCLUSIONS: Hepatic arterial chemotherapy with FUDR and leucovorin for patients with hepatic metastases from colorectal carcinoma yields a high response rate and 1- and 2-year survivals of 86% and 62%, respectively. Although a lower dose of leucovorin (15 mg/m2) with FUDR produces a high response rate with less toxicity, before larger scale trials are initiated, further investigation is needed to reduce toxicity. A study of hepatic arterial dexamethasone with FUDR and leucovorin has been initiated for this purpose.
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