Common Polymorphisms in the 5-Lipoxygenase Pathway and Risk of Incident Myocardial Infarction: A Danish Case-Cohort
Anders Gammelmark1,2, Michael S Nielsen1, Søren Lundbye-Christensen3
1Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark.
Genetic variations in the 5-lipoxygenase pathway (5-LOX) show modest links to myocardial infarction (MI) risk. Specific FLAP and LTA4-H gene polymorphisms may influence cardiovascular disease development.
Area of Science:
- Genetics
- Cardiovascular Disease Research
- Molecular Biology
Background:
- The 5-lipoxygenase pathway (5-LOX) is implicated in cardiovascular disease.
- Genetic polymorphisms in 5-LOX enzymes may influence myocardial infarction (MI) risk.
Purpose of the Study:
- Investigate associations between genetic polymorphisms in 5-LOX pathway genes and incident MI.
- Examine the role of ALOX-5, FLAP, LTA4-H, and LTC4-S gene variants in MI development.
Main Methods:
- Case-cohort study within a Danish cohort (57,053 participants).
- Genotyped 22 SNPs using KASP™ assay and sequenced a tandem-repeat polymorphism in ALOX-5.
- Inferred haplotypes using PHASE 2.1.
Main Results:
- Two FLAP SNPs (rs9551963, rs17222842) negatively associated with MI; rs17222842 remained significant after multiple testing.
- One LTA4-H SNP (rs2247570) associated with higher MI risk.
- Promoter polymorphism rs59439148 associated with MI risk in men (HR 1.63).
Conclusions:
- Common polymorphisms in the 5-lipoxygenase pathway are modestly associated with incident MI.
- Suggests a potential role for the 5-LOX pathway in cardiovascular disease pathogenesis.
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