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Table 3 Genotyping frequency in the Spanish population and elite endurance athletes

From: Liver-Metabolizing Genes and Their Relationship to the Performance of Elite Spanish Male Endurance Athletes; a Prospective Transversal Study

SymbolGenePolymorphismGenotypes (2 or 1 = “optimal” endurance genotype)Frequency in Spanish population (%) (*)Frequency in Spanish elite endurance athletes (%)
CYP2D6Cytochrome P450 family 2 subfamily D member 6c.506-1G>A0 = AA–1 = GA–2 = GG4–27–691–14–85
GSTM1Glutathione S-transferase muFunctional(+)/null(−)0 = −–1 = +82–1871–29
GSTPGlutathione S-transferase piIle(I)105Val(V)0 = GG–1 = GA–2 = AA41–45–146–31–63
GSTTGlutathione S-transferase tethaFunctional(+)/null(−)0 = −–1 = +64–3628–72
  1. (*) www.ensembl.org