Abstract：
:CI-921, an analogue of amsacrine with superior activity against in vivo and in vitro experimental tumor models, has been studied in 16 patients with solid tumors refractory to chemotherapy or for which conventional therapy does not exist. Thirty-nine cycles were given and doses escalated from 39 to 810 mg/m2. This total dose was divided over 3 consecutive days and administered by 15-min infusion each day, repeated three times weekly. Neutropenia (Eastern Cooperative Oncology Group) Grade greater than or equal to 3 occurred at Day 8 (range, 7-13) in 10/13 courses at 648 mg/m2 and in 2/2 courses at 810 mg/m2 with recovery in 10 (range, 4-20) days. At 810 mg/m2 Grade 2 mucositis and phlebitis were noted. Mild nausea and venous irritation occurred in some patients at doses greater than or equal to 288 mg/m2. No objective response was seen. Pharmacokinetics were evaluated following 65 infusions on Days 1 and 3 with plasma concentrations of CI-921 measured by high performance liquid chromatography. Peak plasma concentrations ranged from 3.36 to 85.6 mumol/liter and were significantly correlated with dose. Mean (range) model-independent pharmacokinetic parameters were: distribution half-life, 0.46 h (0.24-1.08); elimination half-life, 2.63 h (1.08-4.98); mean residence time, 2.0 h (1.05-3.35); plasma clearance, 158 ml/h/kg (95-290); and steady-state volume of distribution, 319 ml/kg (219-614) with no significant difference between Day 1 and 3. Toxicity as defined by absolute granulocyte count nadir was significantly correlated with dose, area under concentration-time curve, and peak plasma concentration. The recommended dose for Phase II studies in this schedule is 648 mg/m2 (216 mg/m2 daily for 3 days) repeated every three weeks.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Hardy JR,Harvey VJ,Paxton JW,Evans P,Smith S,Grove W,Grillo-Lopez AJ,Baguley BCsubject
Has Abstractpub_date
1988-11-15 00:00:00pages
6593-6issue
22eissn
0008-5472issn
1538-7445journal_volume
48pub_type
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