Research

Energy & Weight

How your genes affect appetite, metabolism, weight regulation, and blood sugar

This category covers genetic variants affecting glucose and insulin signaling (TCF7L2, PPARG, KCNJ11, IRS1, SLC30A8, GIPR), appetite and satiety regulation (FTO, MC4R, LEP, LEPR, POMC, MC3R, GHRL, RETN, ADIPOQ), thermogenesis and energy expenditure (ADRB3, UCP1, UCP2, UCP3, PRDM16), fat storage and distribution (PLIN1, INSIG2, GRB14, RSPO3, LYPLAL1), and body composition loci (TMEM18, NEGR1, LRP1, INHBA, KCTD15, ETV5, MTCH2, TFAP2B, MAP2K5, GNPDA2, SH2B1, BDNF, NRXN3).

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Genetic Variants (40)

rs7903146

(TCF7L2)

Main type 2 diabetes risk variant - strongly modulated by dietary fat

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rs12255372

(TCF7L2)

Second TCF7L2 diabetes variant - compounds risk with rs7903146

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rs1801282

(PPARG Pro12Ala)

Insulin sensitivity - affects how well your cells respond to insulin

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rs5219

(KCNJ11 E23K)

Controls the pancreatic beta-cell potassium channel that regulates insulin secretion and determines sulfonylurea drug response

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rs13266634

(SLC30A8 Arg325Trp (C>T))

Zinc transporter 8 variant affecting zinc loading into insulin granules, influencing insulin crystallization, secretion, and type 2 diabetes risk

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rs2943641

(IRS1 Near-gene C>T)

Regulates insulin signaling efficiency and cellular glucose uptake

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rs10423928

(GIPR)

Intronic GIPR variant that reduces functional GIP receptor expression via altered splicing, impairing the incretin-mediated insulin response while paradoxically lowering BMI

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rs9939609

(FTO Intron 1 T>A)

The most strongly replicated obesity-associated variant, affecting body weight through reduced adipocyte thermogenesis

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rs17782313

(MC4R Near-gene C>T)

Intergenic variant 188kb downstream of MC4R affecting appetite regulation, meal size, and obesity risk

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rs7799039

(LEP G-2548A)

Promoter variant that increases leptin gene expression in adipose tissue, elevating circulating leptin and raising obesity, insulin resistance, and metabolic syndrome risk

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rs1042571

(POMC)

3'UTR variant in the appetite-suppression gene POMC that disrupts miRNA binding sites, altering mRNA stability and melanocortin satiety signaling

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rs3827103

(MC3R)

Common MC3R missense variant that reduces receptor expression and shifts nutrient partitioning toward fat storage, particularly when co-inherited with the Thr6Lys variant (rs3746619)

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rs696217

(GHRL Leu72Met)

Missense variant in the ghrelin prepropeptide that impairs postprandial ghrelin suppression, increasing appetite, sugar intake, and metabolic syndrome susceptibility

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rs1862513

(RETN -420C>G)

Promoter variant that increases resistin expression via Sp1/Sp3 transcription factor binding, elevating circulating resistin and promoting insulin resistance and inflammation

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rs17300539

(ADIPOQ -11391G>A)

Promoter variant affecting adiponectin secretion and metabolic syndrome risk

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rs4994

(ADRB3 Trp64Arg)

Beta-3 adrenergic receptor variant that impairs catecholamine-stimulated lipolysis and thermogenesis in visceral adipose tissue, increasing susceptibility to abdominal obesity and metabolic dysfunction

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rs1800592

(UCP1 A-3826G)

Promoter variant reducing UCP1 expression in brown adipose tissue, impairing cold-induced and postprandial thermogenesis and increasing visceral fat accumulation with age

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rs660339

(UCP2 Ala55Val)

Missense variant reducing mitochondrial uncoupling efficiency in white adipose tissue, lowering 24-hour energy expenditure and increasing visceral fat accumulation in Val homozygotes

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rs1800849

(UCP3 -55C>T)

Promoter variant in skeletal muscle uncoupling protein 3 that increases UCP3 expression and fatty acid oxidation, with associations with BMI, insulin resistance, and type 2 diabetes risk

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rs2651899

(PRDM16)

Intronic variant in the master regulator of brown/beige fat differentiation, GWAS-validated for migraine risk and linked to impaired thermogenesis and blood pressure regulation

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rs2304795

(PLIN1)

Synonymous exon 8 variant in perilipin 1 that tags a haplotype associated with fat mobilization efficiency and sex-specific obesity risk

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rs7566605

(INSIG2)

Upstream regulatory variant near INSIG2 that influences lipogenesis control and has been associated with BMI, subcutaneous fat accumulation, and obesity risk in multiple populations

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rs10195252

(GRB14/COBLL1)

Intergenic variant between GRB14 and COBLL1 that acts as an eQTL for GRB14 in adipose tissue, shifting body fat toward peripheral (hip and limb) versus central (visceral) deposition

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rs9491696

(RSPO3)

Intronic enhancer variant in RSPO3 that increases gene expression in adipocytes, promoting android (abdominal) fat distribution over gynoid (lower-body) fat

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rs2605100

(LYPLAL1)

Intronic variant in the LYPLAL1 locus associated with waist-hip ratio and fat distribution, with sex-dimorphic effects strongest in women

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rs6548238

(TMEM18)

Second strongest obesity GWAS locus after FTO - influences hypothalamic appetite regulation

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rs2815752

(NEGR1)

Top obesity GWAS variant near NEGR1 — affects hypothalamic appetite regulation and neuronal growth

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rs1841499

(NEGR1)

Hypothalamic appetite regulator variant linking obesity susceptibility to migraine risk via shared neural pathways

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rs11172113

(LRP1)

Intronic enhancer variant in LRP1 that regulates receptor expression in brain and vasculature, linking migraine susceptibility to central leptin signaling and metabolic regulation

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rs6947337

(INHBA)

Activin A signaling variant near INHBA linking adipocyte dysfunction to shared migraine and type 2 diabetes risk

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rs29941

(KCTD15)

GWAS obesity locus near KCTD15 — modulates adipogenesis through AP-2 transcription factor regulation

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rs7647305

(ETV5)

GWAS obesity locus near ETV5 — affects hypothalamic appetite regulation and food reward circuitry via glucocorticoid signaling

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rs10838738

(MTCH2)

Intronic GWAS obesity variant in MTCH2 — affects mitochondrial energy balance, adipogenesis, and fatty acid oxidation through CPT1 regulation

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rs987237

(TFAP2B)

Adipocyte transcription factor variant influencing central fat distribution and modifying weight-loss response to dietary fat

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rs2241423

(MAP2K5)

MAPK signaling variant in MAP2K5 associated with BMI through altered adipogenesis via the MEK5-ERK5 pathway

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rs10938397

(GNPDA2)

GIANT consortium GWAS obesity locus near GNPDA2 — affects hexosamine-pathway-mediated glucose homeostasis and adipogenesis, increasing BMI risk

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rs7498665

(SH2B1 Thr484Ala)

Obesity GWAS missense variant in SH2B1 that impairs leptin signaling and increases visceral fat and type 2 diabetes risk

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rs10767664

(BDNF)

Obesity GWAS locus in a conserved BDNF enhancer - reduces hypothalamic BDNF expression and satiety signaling, increasing caloric intake and BMI

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rs10150332

(NRXN3)

Obesity and waist circumference GWAS hit in NRXN3 — links reward-circuit synaptic function to appetite dysregulation and addictive eating patterns

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rs12272669

(UNKNOWN)

Intergenic variant on chromosome 11q13.4 associated with circulating vitamin B12 levels in genome-wide association studies; the A allele is linked to higher serum B12 concentrations

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