There was no significant association of GSTT1 (+) GSTM1 (+) and GSTT1 (+) GSTM1 (+) both present and both null genotype with stroke risk; OR = 0.57 (0.2867 to 1.155), RR 0.72 (0.4855 to 1.090) p < 0.120. The gene discussed is GSTM1; the disease is Stroke.