Abstract | PURPOSE:
Paclitaxel has a broad spectrum of anti- tumor activity and is useful in the treatment of ovarian, breast, and lung cancer. Paclitaxel is metabolized in the liver by CYP2C8 and CYP3A4 and transported by P-glycoprotein. The dose-limiting toxicities are neuropathy and neutropenia, but the interindividual variability in toxicity and also survival is large. The main purpose of this study was to investigate the impact of genetic variants in CYP2C8 and ABCB1 on toxicity and survival. METHODS: The 182 patients previously treated for ovarian cancer with carboplatin and paclitaxel in either the AGO-OVAR-9 or the NSGO-OC9804 trial in Denmark or Sweden were eligible for this study. Genotyping was carried out on formalin-fixed tissue. The patients' toxicity profiles and survival data were derived from retrospective data. CYP2C8*3, ABCB1 C1236T, G2677T/A, and C3435T were chosen a priori for primary analysis; a host of other variants were entered into an exploratory analysis. RESULTS: Clinical data and tissue were available from a total of 119 patients. Twenty-two single nucleotide polymorphisms (SNPs) in 10 genes were determined. Toxicity registration was available from 710 treatment cycles. In the primary analysis, no statistically significant correlation was found between CYP2C8*3, ABCB1 C1236T, G2677T/A, and C3435T and neutropenia, sensoric neuropathy, and overall survival. CONCLUSION:
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Authors | Troels K Bergmann, Henrik Gréen, Charlotte Brasch-Andersen, Mansoor R Mirza, Jørn Herrstedt, Berit Hølund, Andreas du Bois, Per Damkier, Werner Vach, Kim Brosen, Curt Peterson |
Journal | European journal of clinical pharmacology
(Eur J Clin Pharmacol)
Vol. 67
Issue 7
Pg. 693-700
(Jul 2011)
ISSN: 1432-1041 [Electronic] Germany |
PMID | 21327421
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- ABCB1 protein, human
- ATP Binding Cassette Transporter, Subfamily B
- ATP Binding Cassette Transporter, Subfamily B, Member 1
- Antineoplastic Agents, Phytogenic
- Aryl Hydrocarbon Hydroxylases
- CYP2C8 protein, human
- Cytochrome P-450 CYP2C8
- Paclitaxel
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Topics |
- ATP Binding Cassette Transporter, Subfamily B
- ATP Binding Cassette Transporter, Subfamily B, Member 1
(genetics)
- Adult
- Aged
- Antineoplastic Agents, Phytogenic
(adverse effects, pharmacokinetics)
- Aryl Hydrocarbon Hydroxylases
(genetics)
- Cytochrome P-450 CYP2C8
- Female
- Genotype
- Humans
- Middle Aged
- Ovarian Neoplasms
(drug therapy, genetics, mortality)
- Paclitaxel
(adverse effects, pharmacokinetics)
- Pharmacogenetics
- Polymorphism, Single Nucleotide
- Proportional Hazards Models
- Retrospective Studies
- Treatment Outcome
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