Tumour necrosis factor-alpha gene haplotype is associated with pre-eclampsia

Area of Science:

• Genetics
• Immunology
• Obstetrics

Background:

• Pre-eclampsia is a pregnancy complication with significant maternal and fetal risks.
• Tumour necrosis factor alpha (TNF-alpha) is a pro-inflammatory cytokine implicated in various inflammatory conditions.
• Genetic factors, including gene polymorphisms, are suspected to influence pre-eclampsia susceptibility.

Purpose of the Study:

• To investigate the association between polymorphisms in the promoter region of the TNF-alpha gene and susceptibility to pre-eclampsia.
• To analyze the G-308A polymorphism and its relationship with pre-eclampsia risk.
• To perform a haplotype analysis combining G-308A and C-850T polymorphisms of the TNF-alpha gene.

Main Methods:

• Genotyping of 133 pre-eclamptic and 115 healthy pregnant women for the TNF-alpha G-308A polymorphism.
• Statistical analysis of allele and genotype frequencies.
• Haplotype estimation analysis combining G-308A and C-850T polymorphisms.

Main Results:

• The G-308A allele was more frequent in the pre-eclampsia group (P=0.046).
• No significant difference in genotype distribution for G-308A polymorphism was observed.
• Haplotype analysis revealed significant differences between groups (P=0.023+/-0.004).
• The C-A haplotype was over-represented, and the T-G haplotype was less common in pre-eclamptic women.

Conclusions:

• TNF-alpha gene polymorphisms demonstrate a significant haplotype association with pre-eclampsia susceptibility in the Finnish population.
• These findings suggest a genetic predisposition to pre-eclampsia related to TNF-alpha gene variations.