Abstract
Carboplatin/taxane combination is first-line therapy for ovarian cancer. However, patients can encounter treatment delays, impaired quality of life, even death because of chemotherapy-induced gastrointestinal (GI) toxicity. A candidate gene study was conducted to assess potential association of genetic variants with GI toxicity in 808 patients who received carboplatin/taxane in the Scottish Randomized Trial in Ovarian Cancer 1 (SCOTROC1). Patients were randomized into discovery and validation cohorts consisting of 404 patients each. Clinical covariates and genetic variants associated with grade III/IV GI toxicity in discovery cohort were evaluated in replication cohort. Chemotherapy-induced GI toxicity was significantly associated with seven single-nucleotide polymorphisms in the ATP7B, GSR, VEGFA and SCN10A genes. Patients with risk genotypes were at 1.53 to 18.01 higher odds to develop carboplatin/taxane-induced GI toxicity (P<0.01). Variants in the VEGF gene were marginally associated with survival time. Our data provide potential targets for modulation/inhibition of GI toxicity in ovarian cancer patients.
Publication types
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Clinical Trial, Phase III
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Randomized Controlled Trial
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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Adenosine Triphosphatases / genetics
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Antineoplastic Combined Chemotherapy Protocols / adverse effects*
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Carboplatin / adverse effects*
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Cation Transport Proteins / genetics
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Copper-Transporting ATPases
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Docetaxel
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Female
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Gastrointestinal Diseases / chemically induced*
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Gastrointestinal Diseases / diagnosis
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Gastrointestinal Diseases / genetics*
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Genetic Association Studies
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Genetic Predisposition to Disease
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Humans
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Kaplan-Meier Estimate
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NAV1.8 Voltage-Gated Sodium Channel / genetics
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Ovarian Neoplasms / drug therapy*
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Ovarian Neoplasms / mortality
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Pharmacogenetics*
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Pharmacogenomic Variants / genetics*
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Phenotype
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Polymorphism, Single Nucleotide*
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Proportional Hazards Models
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Risk Factors
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Scotland
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Severity of Illness Index
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Taxoids / adverse effects*
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Time Factors
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Treatment Outcome
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Vascular Endothelial Growth Factor A / genetics
Substances
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Cation Transport Proteins
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NAV1.8 Voltage-Gated Sodium Channel
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SCN10A protein, human
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Taxoids
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VEGFA protein, human
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Vascular Endothelial Growth Factor A
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Docetaxel
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Carboplatin
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Adenosine Triphosphatases
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ATP7B protein, human
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Copper-Transporting ATPases