Apolipoprotein E (Apo E) gene polymorphisms and recurrent pregnancy loss: a meta-analysis

Area of Science:

• Genetics
• Reproductive Medicine
• Molecular Biology

Background:

• Recurrent pregnancy loss (RPL) is a complex condition with various potential contributing factors.
• Emerging research suggests a potential link between Apolipoprotein E (Apo E) gene polymorphisms and the risk of RPL.

Purpose of the Study:

• To investigate the association between Apolipoprotein E (Apo E) gene polymorphisms and recurrent pregnancy loss (RPL).
• To evaluate the risk and protective effects of different Apo E alleles in individuals experiencing RPL.

Main Methods:

• A meta-analysis was conducted, including 6 relevant studies.
• Association with RPL risk was estimated using dominant and recessive models.
• Odds Ratios (OR) and Relative Risks (RR) with 95% Confidence Intervals (CI) were calculated.

Main Results:

• The Apo E4 allele was associated with an increased risk of RPL (OR: 1.919, RR: 1.308).
• The Apo E3 polymorphism showed a protective effect against RPL (OR: 0.727, RR: 0.923).
• The Apo E2 polymorphism was identified as a potential risk factor for RPL (OR: 1.365).

Conclusions:

• A significant association exists between Apo E gene polymorphisms and recurrent pregnancy loss.
• Apo E4 acts as a risk factor, Apo E3 as a protective factor, and Apo E2 as a potential risk factor for RPL.