Plasma Homocysteine Concentration, C677T <i>MTHFR</i> Genotype, and 844ins68bp <i>CBS</i> Genotype in Young Adults With Spontaneous Cervical Artery Dissection and Atherothrombotic Stroke

Our results are consistent with the hypothesis that increased plasma homocysteine levels and the TT MTHFR genotype may represent risk factors for sCAD. In contrast, their role in atherothrombotic strokes remains a contentious issue.