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Arterioscler Thromb Vasc Biol. 2010 Dec;30(12):2648-54. doi: 10.1161/ATVBAHA.110.211805. Epub 2010 Sep 16.

Association of the vitamin D metabolism gene CYP24A1 with coronary artery calcification.

Author information

1
Division of Endocrinology, University of Maryland School of Medicine, Baltimore, Md 21201, USA.

Abstract

OBJECTIVE:

The vitamin D endocrine system is essential for calcium homeostasis, and low levels of vitamin D metabolites have been associated with cardiovascular disease risk. We hypothesized that DNA sequence variation in genes regulating vitamin D metabolism and signaling pathways might influence variation in coronary artery calcification (CAC).

METHODS AND RESULTS:

We genotyped single-nucleotide polymorphisms (SNPs) in GC, CYP27B1, CYP24A1, and VDR and tested their association with CAC quantity, as measured by electron beam computed tomography. Initial association studies were carried out in a discovery sample comprising 697 Amish subjects, and SNPs nominally associated with CAC quantity (4 SNPs in CYP24A1, P=0.008 to 0.00003) were then tested for association with CAC quantity in 2 independent cohorts of subjects of white European ancestry (Genetic Epidemiology Network of Arteriopathy study [n=916] and the Penn Coronary Artery Calcification sample [n=2061]). One of the 4 SNPs, rs2762939, was associated with CAC quantity in both the Genetic Epidemiology Network of Arteriopathy (P=0.007) and Penn Coronary Artery Calcification (P=0.01) studies. In all 3 populations, the rs2762939 C allele was associated with lower CAC quantity. Metaanalysis for the association of this SNP with CAC quantity across all 3 studies yielded a P value of 2.9×10(-6).

CONCLUSIONS:

A common SNP in the CYP24A1 gene was associated with CAC quantity in 3 independent populations. This result suggests a role for vitamin D metabolism in the development of CAC quantity.

PMID:
20847308
PMCID:
PMC2988112
DOI:
10.1161/ATVBAHA.110.211805
[Indexed for MEDLINE]
Free PMC Article

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