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. 2001 Apr;85(4):458–462. doi: 10.1136/heart.85.4.458

Increased risk for ischaemic events is related to combined RAS polymorphism

P P van Geel 1, Y Pinto 1, A Zwinderman 1, R Henning 1, A J van Boven 1, J Jukema 1, A Bruschke 1, J Kastelein 1, W H van Gilst 1, G BAXTER 1
PMCID: PMC1729671  PMID: 11250978

Abstract

OBJECTIVE—To determine whether the angiotensin converting enzyme (ACE) and the angiotensin II type 1 receptor (AT1R A1166C) gene polymorphism interact to increase the risk of ischaemic events, and whether this can be explained by the progression of angiographically defined coronary atherosclerosis.
DESIGN—Prospective defined substudy of the lipid lowering regression trial (REGRESS).
SETTING—University hospital.
PATIENTS—885 male patients with stable coronary artery disease.
MAIN OUTCOME MEASURES—Incidence of ischaemic events during a two year follow up; serial quantitative coronary arteriography (mean segment diameter and minimum obstruction diameter) at baseline and after two years.
RESULTS—Patients who carried both the ACE-DD and AT1R-CC genotype had significantly more ischaemic events during the two year follow up than those carrying other genotype combinations (p = 0.035, Mantel-Haenszel test for linear association). There was no association between the two genotypes and mean segment diameter or minimum obstruction diameter at baseline or after two years.
CONCLUSIONS—The suggestion that ACE-DD and AT1R-CC genotypes interact to increase the risk of ischaemic events is confirmed. However, this increased risk was not accompanied by increased progression of angiographically defined coronary atherosclerosis.


Keywords: renin-angiotensin system; polymorphism; coronary atherosclerosis; ischaemic events

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Figure 1  .

Figure 1  

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Kaplan-Meier curves for the event-free survival of patients according to ACE-DD and AT1R-CC genotypes. The p value indicates the overall significance of the Mantel-Haenszel test for linear association between the curves.

Selected References

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