GSTM1 and stroke disorder: Specifically, dialysis patients who were homozygous for both GSTM1*0 and GSTA1*A alleles exhibited a HR of 4.38 (95%CI:1.50-12.75, P = 0.007) for stroke in comparison with carriers of at least one GSTM1-active and/or GSTA1*B allele.