title: Frequent administration of Dabis Maleate, a phase I study.
abstract: Dabis Maleate (1,4-bis(2'-chloroethyl)-1,4-diazabicyclo[2.2.1] Heptane dihydrogen dimaleate) (NSC 262666) is an alkylating quaternary nitrogen compound. In a previous phase I study using a once-every-3-weeks administration the dose-limiting toxicity was neurotoxicity and the recommended dose for phase II studies was 750 mg/m2 iv every 3 weeks. In vitro studies suggested a higher activity after more frequent administration, and in vivo studies a better therapeutic index with prolonged infusion. We studied 11 patients with solid tumors. Dose levels tested ranged from 250-750 mg/m2, either as a day 1-3 regimen or weekly, the latter as bolus administration or as prolonged infusion. The dose-limiting toxicity was neurotoxicity consisting of paresthesias and ataxia. Nausea and vomiting were moderate. No other major toxicity was observed. The dose recommended for phase II studies is 500 mg/m2/week as a 6-hour iv infusion for 6 weeks, followed by a 3-week rest period.
authors.affiliation: Department of Medical Oncology, Rotterdam Cancer Institute, The Netherlands.
authors.forename: J
authors.initials: J
authors.lastname: Verweij
authors.forename: A S
authors.initials: AS
authors.lastname: Planting
authors.forename: M
authors.initials: M
authors.lastname: de Boer
authors.forename: M E
authors.initials: ME
authors.lastname: van der Burg
authors.forename: G
authors.initials: G
authors.lastname: Stoter
mesh_terms: D000368:Aged; D001643:Bridged Bicyclo Compounds / Q000008:administration & dosage*; D019086:Bridged Bicyclo Compounds, Heterocyclic; D004334:Drug Administration Schedule; D004341:Drug Evaluation; D005260:Female; D006801:Humans; D007262:Infusions, Intravenous; D007275:Injections, Intravenous; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000188:drug therapy*; D000644:Quaternary Ammonium Compounds / Q000008:administration & dosage*
chemical_list: D001643:Bridged Bicyclo Compounds; D019086:Bridged Bicyclo Compounds, Heterocyclic; D000644:Quaternary Ammonium Compounds; C072879:NSC 262266