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Functional variability of glutathione S‐transferases in basque populations

Glutathione S‐transferases (GSTs) are enzymes involved in Phase II reactions. They play a key role in cellular detoxification. Various studies have shown that genes coding for the GST are highly polymorphic and some of these variants are directly associated with a decrease of enzyme activity making individuals more susceptible to different clinical phenotypes. The aim of this study is to investigate the genetic variability of GST genes among human populations. We have focused our attention on the polymorphic variants of the GSTA1, GSTM1, GSTO1, GSTO2, GSTP1, GSTT1, and GSTT2B genes.