In another cohort of 239 patients with TIA, c-statistics of ABCD3-I (0.825, 95% CI, 0.752–0.898) was superior than that of ABCD2 score (0.694, 95% CI, 0.601–0.786; P < 0.001) (78). This evidence concerns the gene ABCD2 and transient ischemic attack.