Second, miR‐200b‐3p, ABCD2 score, and carotid stenosis degree had accuracy in the prediction of CI onset in TIA patients, and the accuracy of the combination of miR‐200b‐3p, ABCD2 score, and carotid stenosis degree was best in the prediction of CI onset in TIA patients. This evidence concerns the gene ABCD2 and transient ischemic attack.