rs755622

This comprehensive review synthesizes literature on gestational diabetes mellitus (GDM), demonstrating its complex multifactorial etiology involving genetic factors (SNPs in GCKR, KCNQ1, MTNR1B, TCF7L2), epigenetic modifications (DNA methylation and microRNA expression), and alterations in microbial composition across multiple body sites. While certain SNP variants are associated with GDM phenotypes globally, genetic predisposition alone does not explain disease development; lifestyle factors can modify epigenetic signatures and microbiota composition to modulate risk. Evidence indicates genes, epigenetic alterations, and microbiota can transfer from mother to offspring with long-term health consequences.

This multicenter case-control study of 1369 SLE patients and 1826 healthy controls examined two functional polymorphisms in the MIF gene: rs5844572 (-794 CATT5-8 microsatellite repeat) and rs755622 (-173 G/C SNP). The study found that high expression MIF genotypes were under-represented in Caucasian SLE patients (21% vs 24%, p=0.049) but not in African-Americans (14.5% vs 19.5%, p=0.256), suggesting MIF exerts a dual influence on SLE susceptibility and severity. The findings indicate that high expression MIF alleles may protect against SLE development but low expression MIF genotypes may protect from end-organ damage once disease develops.

A prospective population-based case-cohort study of 502 type 2 diabetes cases and 1,632 non-cases examined the association between MIF gene variants, circulating MIF levels, and type 2 diabetes risk. The C allele of rs1007888 was associated with elevated MIF serum levels and increased type 2 diabetes risk in women (HR 1.74, 95% CI 1.02–2.97), particularly in obese women, suggesting a causal role for MIF in diabetes development via a Mendelian randomization approach.