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Angiotensin I-converting enzyme insertion/deletion polymorphism: clinical implications

B Wuyts1, J Delanghe, M De Buyzere

  • 1Central Laboratory, University Hospital Gent, Belgium.

Acta Clinica Belgica
|January 1, 1997
PubMed
Summary
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The ACE gene DD genotype shows varied associations with hypertension and cardiovascular disease across different populations. While some studies link it to high blood pressure in Black individuals, its role in myocardial infarction risk is complex and population-dependent.

Area of Science:

  • Genetics
  • Cardiovascular Medicine
  • Epidemiology

Background:

  • The Angiotensin-Converting Enzyme (ACE) gene Insertion/Deletion (I/D) polymorphism is widely studied for its association with cardiovascular diseases.
  • Conflicting findings necessitate a review of existing data regarding the DD genotype's role in hypertension and related conditions.

Purpose of the Study:

  • To critically evaluate the association between the ACE gene polymorphism and cardiovascular disease risk.
  • To synthesize current evidence on the DD genotype's link to hypertension, myocardial infarction, and other cardiovascular conditions.

Main Methods:

  • Systematic review of published literature.
  • Analysis of data from diverse ethnic populations (Caucasians, Black individuals, Japanese).
  • Inclusion of meta-analyses and subpopulation studies.

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Main Results:

  • No consistent association between ACE polymorphism and hypertension in Caucasians.
  • Positive association observed between the D allele and hypertension in Black populations; Japanese studies show mixed results.
  • Generally no association with myocardial infarction risk, but increased risk in specific subgroups (low-risk, CCU patients) supported by meta-analysis.

Conclusions:

  • The association between ACE gene polymorphism and hypertension is population-specific.
  • Evidence for an increased myocardial infarction risk in DD genotype carriers exists in certain subpopulations.
  • Associations with other cardiovascular conditions like coronary artery disease, cerebrovascular disease, and cardiomyopathies remain inconclusive due to conflicting data.