Interaction between GSTT1 and GSTP1 allele variants as a risk modulating-factor for autism spectrum disorders

Mohammad H. Rahbar, Maureen Samms-Vaughan, Jianzhong Ma, Jan Bressler, Katherine A. Loveland, Manouchehr Hessabi, Aisha S. Dickerson, Megan L. Grove, Sydonnie Shakespeare-Pellington, Compton Beecher, Wayne McLaughlin, Eric Boerwinkle

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


We investigated the role of glutathione S-transferase (GST) genes in Autism Spectrum Disorder (ASD). We used data from 111 pairs of age- and sex-matched ASD cases and typically developing (TD) controls between 2 and 8 years of age from Jamaica to investigate the role of GST pi 1 (GSTP1), GST theta 1 (GSTT1), and GST mu 1 (GSTM1) polymorphisms in susceptibility to ASD. In univariable conditional logistic regression models we did not observe significant associations between ASD status and GSTT1, GSTM1, or GSTP1 genotype (all P > 0.15). However, in multivariable conditional logistic regression models, we identified a significant interaction between GSTP1 and GSTT1 in relation to ASD. Specifically, in children heterozygous for the GSTP1 Ile105Val polymorphism, the odds of ASD was significantly higher in those with the null GSTT1 genotype than those with the other genotypes [matched odds ratio (MOR) = 2.97, 95% CI (1.09, 8.01), P = 0.03]. Replication in other populations is warranted.

Original languageEnglish (US)
Pages (from-to)1-9
Number of pages9
JournalResearch in Autism Spectrum Disorders
StatePublished - Apr 2015
Externally publishedYes


  • Autism spectrum disorder
  • Gene-gene interaction
  • Glutathione S-transferase (GST) genes
  • Modulating-factor
  • Oxidative stress

ASJC Scopus subject areas

  • Developmental and Educational Psychology
  • Clinical Psychology
  • Psychiatry and Mental health


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