[Homocysteine, 5,10-methylenetetrahydrofolate reductase and deep venous thrombosis. Survey of 120 patients in internal medicine].

BACKGROUND

In the last few years, the association of deep vein thrombosis with frequent biological risk factors and genetic polymorphisms has significantly modified the field of venous thrombosis. In this study, we measured plasma homocysteine levels and tested the C677T methylenetetrahydrofolate reductase (MTHFR) mutation.

PATIENTS AND METHODS

Plasma homocysteine levels and test for C677T MTHFR mutation were performed in 120 consecutive patients with objectively diagnosed deep vein thrombosis, and in 120 controls.

RESULTS

We found a strong association between hyperhomocysteinemia and thrombosis (odd ratio: 2.43 IC 95% [1.27-4.7]). Conversely the C677T MTHFR gene polymorphism is only associated with hyperhomocysteinemia but not associated with thrombosis.

CONCLUSION

This is a preliminary study to the ongoing international multicentric study of SNFMI (Société nationale française de m0+edecine interne) concerning hyperhomocysteinemia and venous thrombosis.