In a sensitivity analysis using only SAHLSIS2, the results for all ischemic stroke and location stratification were consistent with those of the combined cohort (i.e., all ischemic stroke, AUC = 0.82 for age + NIHSS vs. AUC = 0.84 with the addition of BD‐tau; posterior circulation strokes AUC = 0.71 vs. 0.76; and brainstem or cerebellar infarcts AUC = 0.73 vs. 0.80). This evidence concerns the gene MAPT and ischemic stroke.