Phase I Study of PTK/ZK in Combination With Pemetrexed Disodium (ALIMTA®)
OBJECTIVES:
- Determine the dose-limiting toxicity and maximum tolerated dose (MTD) of vatalanib when
administered with pemetrexed disodium in patients with advanced solid tumors.
- Determine the toxicities of this regimen in these patients.
- Assess the pharmacokinetic interaction of this regimen when administered at the MTD.
- Assess the intracellular content of pemetrexed disodium polyglutamates as a measure of
activity of pemetrexed disodium transport and activation enzymes in the MTD expansion
group.
- Assess polymorphisms and gene expression of pemetrexed disodium target genes and genes
encoding enzymes involved in the transport, activation, and inactivation of pemetrexed
disodium.
- Correlate haplotype-tagged single nucleotide polymorphisms (SNPs) or gene expression
levels with intracellular levels of pemetrexed disodium polyglutamates, toxicity,
and/or efficacy of pemetrexed disodium in the MTD expansion group.
OUTLINE: This is a dose-escalation study of vatalanib. Patients are assigned to 1 of 2
treatment groups.
- Group I (dose escalation): Patients receive pemetrexed disodium IV over 10 minutes on
day 1 and oral vatalanib twice daily on days 1-21.
Cohorts of 3-6 patients receive escalating doses of vatalanib until the maximum tolerated
dose (MTD) is determined. The MTD is defined as the dose preceding that at which 2 of 3 or 2
of 6 patients experience dose-limiting toxicity (DLT) during the first 3 weeks of treatment.
- Group II (MTD expansion group) : Patients receive pemetrexed disodium IV on day 1, as
in group I. Patients also receive oral vatalanib at the MTD twice daily on days 8-21
during course 1 and on days 1-21 during all subsequent courses.
In both groups, courses repeat every 21 days in the absence of disease progression or
unacceptable toxicity. Patients who experience unacceptable toxicity without progressive
disease may be retreated at a lower dose.
Patients treated at the MTD (group II) undergo blood collection periodically for
pharmacokinetic and pharmacogenetic analysis, including polyglutamation, gene expression,
and polymorphism studies using mass spectrometry and high-performance liquid chromatography
(HPLC). Genes of interest include reduced folate carrier (RFC-1), MRP, folate receptor,
BCRP, FPGS, methylenetetrahydrofolate reductase (MTHFR), methionine synthase,
methylthioadenosine phosphorylase, TS, DHFR, and GARFT.
PROJECTED ACCRUAL: A total of 44 patients will be accrued for this study.
Interventional
Primary Purpose: Treatment
Dose-limiting toxicity and maximum tolerated dose (MTD) of vatalanib when administered with pemetrexed disodium as measured by NCI CTCAE v3.0
Yes
Julian Molina, MD, PhD
Study Chair
Mayo Clinic
United States: Food and Drug Administration
CDR0000503856
NCT00390000
May 2007
Name | Location |
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Mayo Clinic | Rochester, Minnesota 55905 |