Abstract:
AIMS:Statins are essential for the reduction of risk of coronary heart disease (CHD) in familial hypercholesterolemia (FH). One of many genes influenced by statin treatment is the ATP-binding cassette transporter A1 (ABCA1) gene, which plays an important role in metabolism of high-density lipoprotein (HDL). The present aim was to test if the ABCA1 C69T polymorphism influences CHD risk and response to statin treatment. METHODS AND RESULTS:In a large cohort of 1686 FH patients without a history of CHD before 1 January 1990, we analysed statin-ABCA1 C69T polymorphism interaction by comparing treated and untreated patients. We used a Cox proportional hazard model adjusted for sex, birth year, and smoking. In analyses restricted to untreated patients, the TT genotype was associated with 1.7 times higher CHD risk than the CC genotype (hazard ratio (HR) =1.65, 95% confidence interval (95% CI): 1.08-2.53; P = 0.02). Conversely, in statin-treated FH patients, CHD risk in TT individuals was not increased (HR: 0.65, 95% CI: 0.35-1.24; P = 0.2). Formal testing confirmed this interaction (P = 0.03). HDL-cholesterol levels were significantly more raised in statin-treated patients with the TT than with the CC genotype (two-way ANOVA, P = 0.045). CONCLUSION:In untreated FH patients, the TT genotype of the ABCA1 C69T polymorphism was associated with increased CHD risk. However, in statin-treated patients, CHD risk was no longer significantly different between genotypes, at least partially explained by a higher rise in HDL-cholesterol levels during statin treatment in TT individuals.
journal_name
Eur Heart Jjournal_title
European heart journalauthors
Versmissen J,Oosterveer DM,Yazdanpanah M,Mulder M,Dehghan A,Defesche JC,Kastelein JJ,Sijbrands EJdoi
10.1093/eurheartj/ehq208subject
Has Abstractpub_date
2011-02-01 00:00:00pages
469-75issue
4eissn
0195-668Xissn
1522-9645pii
ehq208journal_volume
32pub_type
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