TITLE

Relationship Between Age-Related Macular Degeneration--Associated Variants of Complement Factor H and LOC387715 With Coronary Artery Disease

AUTHOR(S)
Pulido, Jose S.; McConnell, Joseph P.; Lennon, Ryan J.; Bryant, Sandra C.; Peterson, Lisa M.; Berger, Peter B.; Somers, Virend; Highsmith, W. Edward
PUB. DATE
March 2007
SOURCE
Mayo Clinic Proceedings;Mar2007, Vol. 82 Issue 3, p301
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
OBJECTIVE: To determine whether either of the gene variants associated with age-related macular degeneration is associated with coronary artery disease (CAD). PATIENTS AND METHODS: This study consisted of 493 patients who underwent clinically indicated coronary angiography between June 1, 1998, and January 1, 1999. The Y402H variant of the complement factor H (CFH) gene and the A69S variant of the LOC387715 gene locus were examined by restriction fragment length polymorphism. Multiple logistic regression models were used to assess the association of CFH and LOC gene variants with CAD. Covarlates with well-established associations with CAD were also evaluated. RESULTS: Seventy patients (14%) were homozygous for the histidine variant (HH) of CFH, 237 (48%) were heterozygous for the histidine variant (HY), and 186 (38%) were homozygous for the tyrosine variant (YY). Three hundred eight patients (62%) were homozygous for the alanine allele of L0C387715, 170 (34%) were heterozygous for Ala and Ser alleles, and 15 (3%) were homozygous for the serine variant. The overall association of the CFH genotype with CAD was not statistically significant (P=.08). However, some evidence (P=.046) suggested that CAD was Increased for the HH genotype compared to the homozygous wild-type YY genotype (odds ratio, 1.95; 95% confidence interval, 1.01-3.76). Male sex, hypertension, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and age were other variables that demonstrated significant associations with CAD. The overall effect of the LOC genotype was not statistically significant (P=.06). Heterozygosity for the serine variant was (P=.02) associated with the absence of CAD vs the AS genotype (odds ratio, 0.59; confidence interval, 0.38-0.91; P=.02). CONCLUSION: The CFH genotype may have an independent association with CAD, although our evidence did not show statistical significance. Controlling for known risk factors, the age-related macular degeneration-associated HH variant appears to be associated with CAD. The L0C387715 gene may also play a role in CAD.
ACCESSION #
24315248

 

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