rs266729

A literature review of 70 studies examining single nucleotide polymorphisms (SNPs) associated with obesity in Mexican populations published 2011-2021. The authors identified SNPs with differential behavior in Mexican compared to Caucasian populations, including rs17782313 (MC4R), rs6548238 (TMEM18), rs6265 (BDNF), rs7498665 (SH2B1), and notably rs6232 (PCSK1) associated with early-onset obesity in Mexican youth. The review emphasizes ethnicity-dependent genetic effects on BMI heritability (40-70%) and highlights genes involved in cholesterol metabolism and adipokine signaling pathways.

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 study examined the association between the GCK -30G>A polymorphism (rs1799884) and gestational diabetes mellitus (GDM) susceptibility through a case-control study of 948 GDM cases and 975 controls in a Chinese population, followed by meta-analysis of 6 studies (2,959 cases, 8,535 controls). The A-allele was significantly associated with increased GDM risk in the case-control study (OR=1.41, 95% CI 1.16-1.71) and remained significantly associated in the meta-analysis overall (OR=1.28, 95% CI 1.17-1.39, P<0.001), with stronger effects in Asian populations (OR=1.37) compared to Caucasians (OR=1.24).

This case-control study of 1,028 endometrial cancer cases and 1,932 controls from Shanghai evaluated 87 SNPs in five obesity-related genes (ADIPOQ, ADIPOR1, ADIPOR2, LEP, LEPR). Three ADIPOQ SNPs (rs3774262 OR=0.68, rs1063539 OR=0.66, rs12629945) and one LEP SNP (rs2071045 OR=0.70) were significantly associated with reduced endometrial cancer risk. The ADIPOQ variants were also associated with lower body weight, waist circumference, and BMI in controls, suggesting a potential mechanism through obesity.

This meta-analysis of 33 studies examined associations between four adiponectin gene (ADIPOQ) polymorphisms and type 2 diabetes. While +45T>G (rs2241766), +276G>T (rs1501299), and -11391G>A (rs17300539) showed no significant associations, the G vs C allele of -11377C>G (rs266729) was associated with increased type 2 diabetes risk (pooled OR 1.07, 95% CI 1.03-1.11, p=0.001). The association with rs266729 was stronger in population-based case-control studies and in white populations.

This case-control association study examined 41 tag and candidate SNPs in the adiponectin (ADIPOQ) and its receptor genes (ADIPOR1, ADIPOR2) in relation to insulin sensitivity measured by euglycemic clamp in 584 white and 119 African American adolescents and their parents (n=703 total). One SNP in ADIPOQ (rs822393, p=0.0034) reached corrected significance threshold in whites and accounted for 1.9% of variance in insulin sensitivity; four additional ADIPOQ SNPs (rs4632532, rs266729, rs182052, rs7649121) showed suggestive associations (p<0.05). Two SNPs in ADIPOR1 showed suggestive associations in African Americans. The results suggest genetic variants in adiponectin pathway genes influence insulin sensitivity, with age potentially modifying the effect.

This case-control study examined 10 haplotype-tagging SNPs in the ADIPOQ and ADIPOR1 genes across 1,297 individuals (441-199 cases, 658-199 controls) to determine association with colorectal cancer risk. The ADIPOQ SNP rs266729 was consistently associated with decreased colorectal cancer risk in both study cohorts (AOR=0.72-0.52, 95% CI 0.34-0.95) and in combined analysis (AOR=0.73, 95% CI 0.53-0.99). Additionally, rs822395 and rs822396 showed associations in the first study, and rs1342387 in ADIPOR1 showed an association in study 1 only. The findings suggest the adiponectin pathway may modify colorectal cancer risk.

Candidate gene association study in 439 Mexican Americans examining variants in ADIPOQ, ADIPOR1, and ADIPOR2 genes and insulin resistance syndrome traits. ADIPOQ variants (rs4632532, rs266729) were associated with BMI, fasting insulin, and skinfold thickness. ADIPOR1 rs7539542 was associated with BMI and waist circumference. Notably, 14 ADIPOR2 SNPs were associated with fasting triglycerides, with rs10848569, rs929434, rs3809266, and rs12342 showing strongest associations (p<0.0004) and demonstrating that rs929434 explains 47% of previously detected linkage signal.