Related Experiment Videos
Essential hypertension: genes and dreams.
Brian J Morris1, Adam V Benjafield, Ruby C Y Lin
1Basic & Clinical Genomics Laboratory, School of Medical Sciences and Institute for Biomedical Research, The University of Sydney, Sydney, Australia. brainm@physiol.edu.au
Clinical Chemistry and Laboratory Medicine
|August 28, 2003
Summary
Genetic studies for essential hypertension show inconsistent results, with many implicated genes failing replication. While future discoveries are expected, clinical genetic testing for this complex disease remains premature.
Area of Science:
- Genetics
- Cardiovascular Disease Research
- Molecular Biology
Background:
- Essential hypertension is a complex polygenic disease with a significant genetic component.
- Previous research has utilized genome scanning and association studies to identify genetic loci and variants associated with hypertension.
- Significant inconsistencies and lack of replication have been observed in these genetic studies.
Purpose of the Study:
- To review and synthesize data from genome scanning and association studies related to essential hypertension.
- To highlight the inconsistencies and lack of replication in identified genetic links to hypertension.
- To assess the current state and future prospects of molecular genetics in understanding and treating essential hypertension.
Main Methods:
- Comprehensive review of published literature on genome scanning linkage studies for essential hypertension.
- Systematic review of association studies implicating specific genes in essential hypertension.
- Tabulation and analysis of identified genetic loci and implicated genes.
Main Results:
- Genome scans have identified hypertension-linked loci on nearly every chromosome, demonstrating striking inconsistency.
- Over 66 genes have been implicated through association studies, but most lack consistent replication across different studies.
- The current body of genetic evidence for essential hypertension is characterized by widespread variability and poor reproducibility.
Conclusions:
- Despite numerous identified loci and implicated genes, the genetic architecture of essential hypertension remains largely elusive due to inconsistent findings.
- Molecular genetics holds promise for identifying major gene variants and developing novel treatments for essential hypertension in the future.
- The clinical application of genetic testing for essential hypertension is currently not feasible, and the hype surrounding its utility exceeds the current scientific reality.