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Updated: Jun 16, 2026

Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
Is apolipoprotien E codon 112 polymorphisms associated with recurrent pregnancy loss?
Hakan Ozornek1, Elif Ergin, Rajasingam S Jeyendran
1EUROFERTIL Reproductive Health Center, Istanbul, Turkey.
Problem:
To compare the prevalence of 112T>C point mutations among women experiencing RPL with fertile control women.
Method Of Study:
Buccal swabs were obtained from 232 individuals: 136 with a history of >or=2 abortions, 37 with at least 2 live births and 59 with a history of deep vein thrombosis (DVT). DNA was extracted and PCR amplification of Apo E codons was performed.
Results:
The allelic frequency of a cytosine at position 112 was 11.4% (31/272) among patients experiencing RPL, compared with a frequency of 5.4% (4/74) among the fertile controls (P = 0.19) and 19.5% (23/118) among individuals with a history of DVT. However, significantly more E3/E4 and E4/E4 genotypes were seen among individuals experiencing RPL and DVT than fertile controls (P < 0.05).
Conclusion:
Apo E4 codon 112C point mutation is, by itself, not associated with an elevated risk of recurrent pregnancy loss, but rather codon 112C in association with codon 158C is a risk factor for RPL.
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