KDR gene polymorphisms and idiopathic recurrent spontaneous abortion

Area of Science:

• Reproductive biology
• Human genetics
• Molecular medicine

Background:

• Angiogenesis is crucial for a successful pregnancy.
• Disruptions in angiogenesis can lead to complications like recurrent spontaneous abortion (RSA).
• The kinase-insert domain-containing receptor (KDR) gene plays a significant role in angiogenesis.

Purpose of the Study:

• To investigate the association between two single-nucleotide polymorphisms (SNPs) in the KDR gene (1719A>T and 1192G>A) and idiopathic RSA.
• To determine if these KDR gene variants are risk factors for RSA in a South-East Iranian population.

Main Methods:

• A case-control study involving 110 women with RSA and 120 healthy women.
• Genomic DNA was extracted from peripheral blood samples.
• KDR gene polymorphisms (1719A>T and 1192G>A) were analyzed using the amplification refractory mutation system-polymerase chain reaction (ARMS-PCR) technique.

Main Results:

• Genotype frequencies for the KDR 1719A>T SNP showed no significant difference between RSA cases and controls.
• Genotype distributions for the KDR 1192G>A SNP were also similar between the case and control groups.
• No statistically significant association was observed between the studied KDR gene polymorphisms and the susceptibility to RSA.

Conclusions:

• The investigated single-nucleotide polymorphisms (SNPs) in the KDR gene are not associated with an increased risk of recurrent spontaneous abortion (RSA).
• These findings suggest that other genetic or environmental factors may be involved in the etiology of idiopathic RSA in this population.
• Further studies with larger sample sizes and different populations are warranted to fully elucidate the role of KDR gene variants in RSA.