Methylene tetrahydrofolate reductase C677T genotype and stroke

Area of Science:

• Genetics
• Neurology
• Cardiovascular Science

Background:

• Elevated homocysteine levels are linked to atherosclerosis and cerebrovascular disease.
• A thermolabile variant of methylene tetrahydrofolate reductase (MTHFR) is implicated in genetic hyperhomocysteinemia.
• A specific point mutation (c.677C>T) in the MTHFR gene causes this thermolabile enzyme.

Purpose of the Study:

• To investigate the association between the MTHFR gene mutation (c.677C>T) and cerebrovascular accidents (stroke).
• To determine if this specific MTHFR mutation is a significant genetic risk factor for stroke in the studied population.

Main Methods:

• Genotyping for the MTHFR c.677C>T mutation was performed.
• The mutation frequency was compared between 271 patients with CT-proven cerebrovascular accidents and 173 control subjects.
• Subgroup analyses were conducted based on age (under 65) and stroke location.

Main Results:

• No significant difference in the frequency of the MTHFR mutant genotype was observed between stroke patients and the control group.
• Separate analyses by age and stroke anatomical location also showed no significant differences.
• The evaluated MTHFR mutation was not found to be a major contributor to cerebrovascular disease in this cohort.

Conclusions:

• The MTHFR c.677C>T mutation is not a significant risk factor for cerebrovascular disease in the investigated population.
• This finding suggests other genetic or environmental factors may play a more prominent role in stroke aetiology.
• Further research is warranted to explore other genetic markers and homocysteine metabolism pathways in relation to stroke.