Genetic variants in TPMT and COMT are associated with hearing loss in children receiving cisplatin chemotherapy

Nat Genet. 2009 Dec;41(12):1345-9. doi: 10.1038/ng.478. Epub 2009 Nov 8.

Abstract

Cisplatin is a widely used and effective chemotherapeutic agent, although its use is restricted by the high incidence of irreversible ototoxicity associated with it. In children, cisplatin ototoxicity is a serious and pervasive problem, affecting more than 60% of those receiving cisplatin and compromising language and cognitive development. Candidate gene studies have previously reported associations of cisplatin ototoxicity with genetic variants in the genes encoding glutathione S-transferases and megalin. We report association analyses for 220 drug-metabolism genes in genetic susceptibility to cisplatin-induced hearing loss in children. We genotyped 1,949 SNPs in these candidate genes in an initial cohort of 54 children treated in pediatric oncology units, with replication in a second cohort of 112 children recruited through a national surveillance network for adverse drug reactions in Canada. We identified genetic variants in TPMT (rs12201199, P value = 0.00022, OR = 17.0, 95% CI 2.3-125.9) and COMT (rs9332377, P value = 0.00018, OR = 5.5, 95% CI 1.9-15.9) associated with cisplatin-induced hearing loss in children.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents / adverse effects*
  • Antineoplastic Agents / therapeutic use
  • Catechol O-Methyltransferase / genetics*
  • Child
  • Cisplatin / adverse effects*
  • Cisplatin / therapeutic use
  • Cohort Studies
  • Genetic Variation*
  • Hearing Loss / chemically induced
  • Hearing Loss / genetics*
  • Humans
  • Methyltransferases / genetics*
  • Polymorphism, Single Nucleotide

Substances

  • Antineoplastic Agents
  • Methyltransferases
  • Catechol O-Methyltransferase
  • thiopurine methyltransferase
  • Cisplatin