However, neither the FII-G20210 (p=0.536) nor the homozygous MTHFR-C677T genotype (p=0.325) variant contributed to the risk of CVT in these Tunisian patients.
We report a case of cerebral venous thrombosis (CVT) due to tyrotoxicosis in a patient with methylenetetrahydro-folate-reductase (MTHFR) gene polymorphism C677T, (genotype 677TT), in which discontinuation of intravenous heparin was followed by clinical and radiological worsening despite warfarin treatment.
We report three patients with cerebral vein thrombosis (CVT) in which the only risk factor we were able to identify was increased blood homocysteine levels and the C677T polymorphism in both alleles of the methylene tetrahydrofolate reductase MTHFR gene.