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Investigational New Drugs

, Volume 12, Issue 1, pp 49–52 | Cite as

FIVB plus GM-CSF in metastatic colorectal cancer

  • Carla I. Falkson
  • Geoffrey Falkson
  • Hendré C. Falkson
  • Almari Uys
  • Shoshana Keren-Rosenberg
Phase II Studies
  • 20 Downloads

Abstract

The response rate of patients with metastatic colorectal cancer to the 4-drug combination [5-Fluorouracil (5-FU), dacarbazine, vincristine and bis-chloronitrosourea given 5 weekly (FIVB)] was better than the response rate to 5-FU. The dose limiting toxicity of the FIVB was myelosuppression. The present study investigates the effect of FIVB given with GM-CSF so that drug cycles could be given every 4 weeks.

Thirty-five ambulatory patients with measurable metastatic colorectal cancer were treated with FIVB plus GM-CSF 4 weekly. All patients were evaluable for toxicity. Among the 163 cycles given only 4 were delayed because of leucopenia and 8 cycles were delayed because of gastrointestinal (GI) toxicity. A 50% dose reduction was given to 10 patients who had Grade 2 and 3 GI toxicity. Four of the 35 patients developed thromboembolic complications, 2 of which were lethal. Two patients were not evaluable for response as they were removed from study early because of toxicity. There were 2 complete responses and 6 partial responses. The median time to treatment failure was 3.8 months and median survival time 9.9 months.

The addition of GM-CSF to FIVB decreased the expected leucopenia allowing drug treatment to be given 4 weekly to most patients. GI toxicity was dose limiting. Despite the increased dose intensity that could be delivered (to two thirds of patients), response rates were not definitely increased, no survival benefit was seen and important thromboembolic complications occurred.

Key words

metastatic colorectal cancer chemotherapy GM-CSF 

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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • Carla I. Falkson
    • 1
  • Geoffrey Falkson
    • 1
  • Hendré C. Falkson
    • 1
  • Almari Uys
    • 1
  • Shoshana Keren-Rosenberg
    • 1
  1. 1.Department of Medical OncologyUniversity of PretoriaSouth Africa

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