Carboplatin/taxane-induced gastrointestinal toxicity: a pharmacogenomics study on the SCOTROC1 trial

Pharmacogenomics J. 2016 Jun;16(3):243-8. doi: 10.1038/tpj.2015.52. Epub 2015 Jul 21.

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

  • Clinical Trial, Phase III
  • Randomized Controlled Trial
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adenosine Triphosphatases / genetics
  • Antineoplastic Combined Chemotherapy Protocols / adverse effects*
  • Carboplatin / adverse effects*
  • Cation Transport Proteins / genetics
  • Copper-Transporting ATPases
  • Docetaxel
  • Female
  • Gastrointestinal Diseases / chemically induced*
  • Gastrointestinal Diseases / diagnosis
  • Gastrointestinal Diseases / genetics*
  • Genetic Association Studies
  • Genetic Predisposition to Disease
  • Humans
  • Kaplan-Meier Estimate
  • NAV1.8 Voltage-Gated Sodium Channel / genetics
  • Ovarian Neoplasms / drug therapy*
  • Ovarian Neoplasms / mortality
  • Pharmacogenetics*
  • Pharmacogenomic Variants / genetics*
  • Phenotype
  • Polymorphism, Single Nucleotide*
  • Proportional Hazards Models
  • Risk Factors
  • Scotland
  • Severity of Illness Index
  • Taxoids / adverse effects*
  • Time Factors
  • Treatment Outcome
  • Vascular Endothelial Growth Factor A / genetics

Substances

  • Cation Transport Proteins
  • NAV1.8 Voltage-Gated Sodium Channel
  • SCN10A protein, human
  • Taxoids
  • VEGFA protein, human
  • Vascular Endothelial Growth Factor A
  • Docetaxel
  • Carboplatin
  • Adenosine Triphosphatases
  • ATP7B protein, human
  • Copper-Transporting ATPases