GSTO2 and acute lymphoblastic leukemia: Furthermore, the frequency of rs156697 G allele was higher in patients as compared to controls (38% vs 25.7%) and along with GSTO2-AG and GG sequence variants showed a significant association with B-ALL risk (OR = 2.37, 95% CI = 1.09–4.33, p = 0.001) (AG; OR = 2.48, 95% CI = 1.31–4.86, p = 0.01) (OR = 3.13, 95% CI = 1.55-6.04, p = 0.01) (Table 2).