rs6905288 — VEGFA

VEGFA — The Blood Vessel Builder That Shapes Your Fat

VEGFA (Vascular Endothelial Growth Factor A) encodes the master regulator of angiogenesis¹¹ angiogenesis
The formation of new blood vessels from existing ones, essential for tissue growth and repair. While VEGFA is widely known for its role in wound healing and cancer biology, it plays a surprisingly important role in adipose tissue function. Fat tissue requires an extensive blood vessel network to function properly — and VEGFA determines how well vascularized your fat depots are.

The rs6905288 variant sits in an intronic regulatory region near VEGFA on chromosome 6. It was identified in one of the largest GWAS meta-analyses for fat distribution and shows one of the clearest examples of sexual dimorphism²² sexual dimorphism
The genetic effect on fat distribution is substantially stronger in women than in men in fat distribution genetics.

The Mechanism

Adipose tissue is one of the most highly vascularized organs in the body. When fat tissue expands, it needs new blood vessels to supply oxygen and nutrients. VEGF-A drives this process, and the balance of VEGF-A expression determines whether fat expansion is metabolically healthy or unhealthy³³ metabolically healthy or unhealthy
Well-vascularized fat tissue stores lipids safely; poorly vascularized fat becomes inflamed, fibrotic, and insulin resistant.

Research has shown dichotomous effects⁴⁴ dichotomous effects
VEGF-A can either improve or worsen adipose function depending on the level and timing of expression — moderate VEGF-A overexpression in white adipose tissue promotes healthy fat expansion with better vascularization and even a "beiging" effect (conversion toward metabolically active brown-like fat), while dysregulated VEGF-A signaling promotes pathological adipose expansion with inflammation and fibrosis.

The A allele at rs6905288 is associated with altered VEGFA regulatory activity that shifts fat distribution toward a central pattern and increases insulin resistance.

The Evidence

The Heid et al. 2010 meta-analysis⁵⁵ Heid et al. 2010 meta-analysis
Heid et al. Meta-analysis identifies 13 new loci associated with waist-hip ratio and reveals sexual dimorphism in the genetic basis of fat distribution. Nat Genet, 2010 identified rs6905288 near VEGFA among 13 new loci for WHR in a meta-analysis of 32 GWAS studies comprising 77,167 participants with replication in 113,636 individuals. VEGFA was one of seven loci showing marked sexual dimorphism, with stronger effects in women.

In a metabolic phenotyping study of 6,039 Danes⁶⁶ metabolic phenotyping study of 6,039 Danes
Burgdorf et al. Association studies of novel obesity-related gene variants with quantitative metabolic phenotypes in a population-based sample of 6,039 Danish individuals. Diabetologia, 2012, female carriers of the VEGFA rs6905288 A allele showed insulin resistance with a 3.7% increase in HOMA-IR⁷⁷ HOMA-IR
Homeostatic Model Assessment for Insulin Resistance, a standard measure calculated from fasting glucose and insulin (P = 0.00036) and a 4.0% decrease in the Matsuda index⁸⁸ Matsuda index
A measure of whole-body insulin sensitivity derived from an oral glucose tolerance test (P = 2 x 10^-4).

The Shungin et al. 2015 study⁹⁹ Shungin et al. 2015 study
Shungin et al. New genetic loci link adipose and insulin biology to body fat distribution. Nature, 2015 expanded the evidence across 224,459 individuals, confirming the VEGFA locus and specifically implicating angiogenesis as a pathway linking genetic variants to fat distribution. A subsequent Mendelian randomization analysis¹⁰¹⁰ Mendelian randomization analysis
Emdin et al. JAMA, 2017 demonstrated that WHR-raising variants are causally linked to type 2 diabetes (OR 1.77) and coronary heart disease (OR 1.46).

Practical Actions

The VEGFA variant's effect on adipose vascularization and insulin resistance suggests that supporting healthy angiogenesis in fat tissue may help mitigate the metabolic consequences. Nutrients and activities that promote healthy vascular function in adipose tissue may be particularly relevant for carriers.

Interactions

VEGFA rs6905288 interacts biologically with the VEGFA promoter variant rs2010963 (already in this database under fitness/body). While rs2010963 directly affects VEGF-A protein expression levels, rs6905288 influences the regulatory context in adipose tissue specifically. Carriers of risk alleles at both positions may have compounded effects on adipose vascularization. Additionally, the angiogenesis pathway intersects with the VEGFC variant rs11677611 in the lipedema category, since both vascular growth factors regulate the fluid and fat dynamics in adipose tissue through complementary mechanisms.