Phase II trial of intravenous CI-980 (NSC 370147) in patients with metastatic colorectal carcinoma. Model for prospective evaluation of neurotoxicity.

Published

Journal Article

CI-980 (NSC 370147)--a synthetic mitotic inhibitor that binds to tubulin at the colchicine binding site--has significant activity against a broad spectrum of tumor models and greater in vitro cytotoxicity when given over > 24 hours than 4 hours or less. Phase I studies demonstrated central nervous system (CNS) toxicity to be dose-limiting when CI-980 was administered as a 24-hour infusion. When a 72-hour infusion was given, CNS toxicity was reduced and granulocytopenia became the dose-limiting toxicity. In this phase II study, CI-980, 4.5 mg/m2, was administered as a 24-hour continuous intravenous infusion for 3 consecutive days and repeated every 21 days. Fourteen patients who had measurable metastatic colorectal cancer were entered in the trial. Eight patients had received one prior chemotherapy regimen for metastatic disease. Patients were prospectively monitored by neurologic examinations and neuropsychologic assessment of cognitive functioning. No complete or partial responses were observed. Grade 4 granulocytopenia was the dose-limiting toxicity. Reversible declines in recent memory function were noted in all patients. After each course of CI-980, there were also transient non-significant declines in motor coordination, compared with the preinfusion assessment. At the stated dose and schedule, CI-980 lacks activity in metastatic colorectal carcinoma. The agent's toxicity profile (granulocytopenia and CNS effects) was comparable with previously described effects of this agent.

Full Text

Duke Authors

Cited Authors

  • Pazdur, R; Meyers, C; Diaz-Canton, E; Abbruzzese, JL; Patt, Y; Grove, W; Ajani, J

Published Date

  • December 1997

Published In

Volume / Issue

  • 20 / 6

Start / End Page

  • 573 - 576

PubMed ID

  • 9391543

Pubmed Central ID

  • 9391543

International Standard Serial Number (ISSN)

  • 0277-3732

Language

  • eng

Conference Location

  • United States