This Article Full Text Full Text (PDF) All Versions of this Article: 36/1/154    most recent 01.STR.0000149948.31879.f0v1 Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Zee, R. Y.L. Articles by Ridker, P. M. Search for Related Content PubMed PubMed Citation Articles by Zee, R. Y.L. Articles by Ridker, P. M. Related Collections Risk Factors Epidemiology Genetics of cardiovascular disease

(Stroke. 2005;36:154.)
© 2005 American Heart Association, Inc.

Research Reports

Toll-like Receptor 4 Asp299Gly Gene Polymorphism and Risk of Atherothrombosis

From the Center for Cardiovascular Disease Prevention, the Donald W. Reynolds Center for Cardiovascular Research, the LeDucq Center for Molecular and Genetic Epidemiology, and the Division of Preventive Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass.

Correspondence to Dr Robert Y. L. Zee, Center for Cardiovascular Disease Prevention, Brigham and Women’s Hospital, 900 Commonwealth Avenue East, Boston, MA 02215. E-mail rzee{at}rics.bwh.harvard.edu

Background and Purpose— Recent findings of an association between a functional toll-like receptor 4 (TLR4) D299G gene variant and reduced risk of atherothrombotic disorders have generated great interest.

Methods— We evaluated the TLR4 D299G polymorphism among 695 individuals with incident myocardial infarction (MI) or stroke and among 695 age- and smoking-matched individuals who remained free of reported cardiovascular disease during follow-up within the Physicians’ Health Study.

Results— Overall, we observed little evidence of association between the D299G polymorphism and risk of any atherothrombotic event (P=0.25), incident MI (P=0.89), or stroke (P=0.09), assuming an additive model. Adjusting for traditional cardiovascular risk factors or assuming a dominant model yielded similar null findings. Whereas the observed carrier frequency of the D299G polymorphism in our data (13.0%) is consistent with those observed in most other studies, it was higher than the 6.8% carrier frequency observed in the initial study that suggested a protective effect for this gene variant. Thus, this former association may have been caused, in part, by an underestimation of the control frequency.

Conclusion— In contrast to previous data, the D299G TLR4 polymorphism was not associated with risk of incident MI or stroke in this large prospective study of US men.

Key Words: cardiovascular diseases • genetics • thrombosis • toll-like receptors

This article has been cited by other articles:

				J. R. Caso, J. M. Pradillo, O. Hurtado, P. Lorenzo, M. A. Moro, and I. Lizasoain Toll-Like Receptor 4 Is Involved in Brain Damage and Inflammation After Experimental Stroke Circulation, March 27, 2007; 115(12): 1599 - 1608. [Abstract] [Full Text] [PDF]

				W. Koch, P. Hoppmann, A. Pfeufer, A. Schomig, and A. Kastrati Toll-like receptor 4 gene polymorphisms and myocardial infarction: no association in a Caucasian population Eur. Heart J., November 1, 2006; 27(21): 2524 - 2529. [Abstract] [Full Text] [PDF]

				L. Romics Jr, G. Szabo, J. C. Coffey, J. H. Wang, and H. P. Redmond The Emerging Role of Toll-Like Receptor Pathways in Surgical Diseases Arch Surg, June 1, 2006; 141(6): 595 - 601. [Abstract] [Full Text] [PDF]