Phase I Trial of 5-Fluorouracil and Dipyridamole Administered by Seventy-two-Hour Concurrent Continuous Infusion

Scot C. Remick, Jean L. Grem, Paul H. Fischer, Kendra D. Tutsch, Dona B. Alberti, Lavonne M. Nieting, Mary B. Tombes, Joan Bruggink, James K.V. Willson, Donald L. Trump

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Abstract

Forty-seven patients with advanced malignancies were treated with a concurrent 72-h continuous infusion of 5-fluorouracil (FUra) and dipyridamole. The FUra dose was escalated over the dose range of 185 to 3600 mg/m2/day for 3 days. Dipyridamole was administered in a fixed dose of 7.7 mg/kg/day for 3 days. A total of 155 courses of therapy were completed of which there were 31 paired courses of the combination and FUra alone, at the same dose of FUra and in the same patient. This was for purposes of analysis of pharmacokinetics and modulation of FUra toxicity by dipyridamole. Stomatitis was the dose-limiting toxicity experienced by patients entered into this trial. Myelosuppression was not a serious problem. Increasing FUra plasma concentration was associated with greater leukopenia and stomatitis. Dipyridamole did not appear to modulate the systemic toxicity of FUra. The pharmacokinetics of FUra were altered by the concurrent administration of dipyridamole. Dipyridamole promoted the total body clearance of FUra which resulted in lower mean steady-state FUra plasma concentrations when compared with courses of FUra alone administered at the same dose level. These differences were statistically significant over the course of the trial. For courses of the combination, FUra exhibited linear pharmacokinetics over the dose range studied. Total body clearance of FUra declined slightly at the higher dose levels, but the differences were not significant. For courses of FUra alone, total body clearance was significantly decreased above the dose level of 2300 mg/m2/day. At the maximal tolerated dose of FUra, 2300 mg/m2/day x3, mean steady-state FUra plasma concentration and total body clearance were 6.6 μm and 122 liters/h/m2, respectively, for courses of the combination. The corresponding pharmacokinetic parameters were 7.4 μm and 103 liters/h/m2 for courses when FUra was given alone. Further evaluation of the utility of this regimen and basis of these pharmacokinetic observations appear warranted.

Original languageEnglish (US)
Pages (from-to)2667-2672
Number of pages6
JournalCancer Research
Volume50
Issue number9
StatePublished - May 1 1990

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Dipyridamole
Fluorouracil
Pharmacokinetics
Stomatitis
Maximum Tolerated Dose
Leukopenia

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Cite this

Remick, S. C., Grem, J. L., Fischer, P. H., Tutsch, K. D., Alberti, D. B., Nieting, L. M., ... Trump, D. L. (1990). Phase I Trial of 5-Fluorouracil and Dipyridamole Administered by Seventy-two-Hour Concurrent Continuous Infusion. Cancer Research, 50(9), 2667-2672.

Phase I Trial of 5-Fluorouracil and Dipyridamole Administered by Seventy-two-Hour Concurrent Continuous Infusion. / Remick, Scot C.; Grem, Jean L.; Fischer, Paul H.; Tutsch, Kendra D.; Alberti, Dona B.; Nieting, Lavonne M.; Tombes, Mary B.; Bruggink, Joan; Willson, James K.V.; Trump, Donald L.

In: Cancer Research, Vol. 50, No. 9, 01.05.1990, p. 2667-2672.

Research output: Contribution to journalArticle

Remick, SC, Grem, JL, Fischer, PH, Tutsch, KD, Alberti, DB, Nieting, LM, Tombes, MB, Bruggink, J, Willson, JKV & Trump, DL 1990, 'Phase I Trial of 5-Fluorouracil and Dipyridamole Administered by Seventy-two-Hour Concurrent Continuous Infusion', Cancer Research, vol. 50, no. 9, pp. 2667-2672.
Remick SC, Grem JL, Fischer PH, Tutsch KD, Alberti DB, Nieting LM et al. Phase I Trial of 5-Fluorouracil and Dipyridamole Administered by Seventy-two-Hour Concurrent Continuous Infusion. Cancer Research. 1990 May 1;50(9):2667-2672.
Remick, Scot C. ; Grem, Jean L. ; Fischer, Paul H. ; Tutsch, Kendra D. ; Alberti, Dona B. ; Nieting, Lavonne M. ; Tombes, Mary B. ; Bruggink, Joan ; Willson, James K.V. ; Trump, Donald L. / Phase I Trial of 5-Fluorouracil and Dipyridamole Administered by Seventy-two-Hour Concurrent Continuous Infusion. In: Cancer Research. 1990 ; Vol. 50, No. 9. pp. 2667-2672.
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