Long-term effect of folic acid therapy in heart transplant recipients: follow-up analysis of a randomized study

Transplantation
Luciano PotenaAngelo Branzi

Abstract

Folic acid therapy reduces homocysteine plasma levels, which seem to influence occurrence of cardiac allograft vasculopathy, but its effect on medium- or long-term prognosis after heart transplantation is unknown. We analyzed 7-year outcome of 51 recipients randomized to receive 15 mg/day of methyltertrahydrofolate for 1 year after heart transplantation or standard therapy alone (originally, for intravascular ultrasound study of short-term cardiac allograft vasculopathy progression); recipients were observed for a further 5 to 6 years. Overall, 13 deaths occurred (six oncologic, five cardiovascular, two infective). Estimated 7-year survival was better in recipients randomized to folate (88%+/-6% vs. 61%+/-9%, P=0.04). After adjusting for age, pretransplant coronary artery disease, and hyperhomocysteinemia, posttransplant folic acid therapy was associated with lower mortality (relative risk [RR] 0.53, 95% confidence interval [CI] 0.25-0.97; P=0.036), apparently driven by reductions in both cancer-related and cardiovascular causes. Reduced mortality was marked in a high-risk subgroup comprising older recipients and patients transplanted because of coronary artery disease (RR 0.43, 95% CI 0.17-0.85) but not in the lower-risk subgr...Continue Reading

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Citations

Apr 24, 2010·Stroke; a Journal of Cerebral Circulation·Meng LeeJeffrey L Saver
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