Clinical phase I and pharmacokinetic trial of vinorelbine administered as single intravenous bolus every 21 days in cancer patients.
We have performed a high-dose clinical and pharmacokinetic trial with vinorelbine administered as a bolus injection every 21 days. The aim was to evaluate a schedule with longer treatment intervals than one week and to determine the toxicity pattern of such a schedule. A total of 13 patients (pts) with solid tumors (non-small-cell lung [3 pts], unknown primary [3 pts], mesothelioma [2 pts], colon/rectum, sarcoma, thyroid, head/neck and cervix [1 pt each]) were entered [9 male, 4 female, median age: 56 years (range: 37-69)]. Dose levels were 35, 40 and 45 mg/m2 with a total of 26 cycles administered. At 40 mg/m2, 2/6 pts developed grade 4 granulocytopenia. 1/1 pt at 45 mg/m2 developed a grade 4 leuko- and granulocytopenia. Non-hematological toxicities were mild to moderate. Neurologic toxicity except for constipation was mild. Constipation occurred at 35 mg/m2 in 1/6 pts WHO grade 4, at 40 mg/m2 in 2/6 pts WHO grade 3 and at 45 mg/m2 in 1/1 pt WHO grade 4 and was due to neurotoxicity. No objective antitumor response was observed. Vinorelbine pharmacokinetics were analysed in whole blood and plasma and were similar to previously published studies using < or = 30 mg/m2. Our results confirm a high affinity of vinorelbine to corpuscular blood elements. We conclude that the MTD of vinorelbine administered once every 21 days as bolus injection is 40 mg/m2, the dose-limiting toxicities are constipation and granulocytopenia and the recommended dose for subsequent Phase II trials is 35 mg/m2.
Schilling
T
T
Division of Hematology and Oncology, Klinikum rechts der Isar der Technischen Universität München, Germany.
Fiebig
H H
HH
Kerpel-Fronius
S
S
Winterhalter
B
B
Variol
P
P
Tresca
P
P
Heinrich
B
B
Hanauske
A R
AR
D000328:Adult; D000368:Aged; D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage* / Q000009:adverse effects / Q000493:pharmacokinetics; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000188:drug therapy* / Q000378:metabolism; D014747:Vinblastine / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000493:pharmacokinetics; D000077235:Vinorelbine
D000972:Antineoplastic Agents, Phytogenic; D014747:Vinblastine; D000077235:Vinorelbine