In addition, lower ADAMTS13 levels were found in patients with the most severe stroke on admission as assessed with the National Institutes of Health Stroke Scale (NIHSS), Barthel Index (BI) and modified Ranking scale (mRS) although this did not reach statistical significance (p = 0.265; p = 0.100 and p = 0.163, respectively). This evidence concerns the gene ADAMTS13 and stroke disorder.