GSTT4 and ischemic stroke: Furthermore, the eNOS3-GG and eNOS3-GT genotypes were associated with susceptibility to ischemic stroke (OR = 1.95, <i>p</i> < 0.05).<h4>Conclusion</h4>This case-control study identified 11 novel GSTT4 variants and several known polymorphisms associated with ischemic stroke risk in Saudi patients.