ACE Gene Variant and Preeclampsia Risk
Author Information
Author(s): Serrano Norma C, Díaz Luis A, Páez Maria C, Mesa Clara M, Cifuentes Rodrigo, Monterrosa Alvaro, González Adriana, Smeeth Liam, Hingorani Aroon D, Casas Juan P
Primary Institution: Universidad Autónoma de Bucaramanga, Bucaramanga, Colombia
Hypothesis
The published literature on the ACE-I/D polymorphism in preeclampsia might be affected by small-study bias.
Conclusion
The observed small increase in risk of preeclampsia associated with the ACE D-allele is likely due to small-study bias.
Supporting Evidence
- The study included 1,711 pregnant women, with 665 diagnosed with preeclampsia.
- Results showed no significant association between the ACE-I/D variant and preeclampsia risk.
- A meta-analysis of 22 studies indicated a small increase in risk, but this was likely due to small-study bias.
- Findings suggest that larger collaborative studies are needed to clarify the genetic basis of preeclampsia.
Takeaway
Scientists studied a gene that might affect preeclampsia risk in pregnant women and found that earlier studies with fewer participants might have given misleading results.
Methodology
A prospective case-control study with 1,711 pregnant women, genotyping for the ACE-I/D polymorphism and a meta-analysis of published studies.
Potential Biases
Small-study bias may have influenced the perceived association between the ACE gene variant and preeclampsia.
Limitations
Previous studies were often small and underpowered, leading to potential bias in results.
Participant Demographics
1,711 unrelated young pregnant women from five Colombian cities.
Statistical Information
P-Value
0.006
Confidence Interval
95% CI, 1.07–1.49
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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