Genetic variants in SLC22A17 and SLC22A7 are associated with anthracycline-induced cardiotoxicity in children

Pharmacogenomics. 2015;16(10):1065-76. doi: 10.2217/pgs.15.61. Epub 2015 Jul 31.

Abstract

Aim: To identify novel variants associated with anthracycline-induced cardiotoxicity and to assess these in a genotype-guided risk prediction model.

Patients & methods: Two cohorts treated for childhood cancer (n = 344 and 218, respectively) were genotyped for 4578 SNPs in drug ADME and toxicity genes.

Results: Significant associations were identified in SLC22A17 (rs4982753; p = 0.0078) and SLC22A7 (rs4149178; p = 0.0034), with replication in the second cohort (p = 0.0071 and 0.047, respectively). Additional evidence was found for SULT2B1 and several genes related to oxidative stress. Adding the SLC22 variants to the prediction model improved its discriminative ability (AUC 0.78 vs 0.75 [p = 0.029]).

Conclusion: Two novel variants in SLC22A17 and SLC22A7 were significantly associated with anthracycline-induced cardiotoxicity and improved a genotype-guided risk prediction model, which could improve patient risk stratification.

Keywords: anthracyclines; association study; cardiotoxicity; childhood cancer; pharmacogenomics.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anthracyclines / adverse effects*
  • Cardiotoxicity / genetics*
  • Case-Control Studies
  • Child
  • Child, Preschool
  • Female
  • Follow-Up Studies
  • Genotype
  • Heart Diseases / chemically induced*
  • Heart Diseases / genetics*
  • Humans
  • Male
  • Organic Anion Transporters, Sodium-Independent / genetics*
  • Organic Cation Transport Proteins / genetics*
  • Oxidative Stress / genetics
  • Polymorphism, Single Nucleotide / genetics*
  • Risk

Substances

  • Anthracyclines
  • Organic Anion Transporters, Sodium-Independent
  • Organic Cation Transport Proteins
  • SLC22A17 protein, human
  • SLC22A7 protein, human