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rs705117 Intronic GC variant independently associated with vitamin D binding protein (VDBP) concentration; TT carriers have lower circulating VDBP and lower total 25(OH)D but may have normal or elevated free (bioavailable) vitamin D
Chromosome 4 Risk Allele T Category Vitamin D Metabolism Tags Vitamin D, Bone Health, Micronutrients, Immune System, Ancestry-Specific, Mineral Metabolism

The GC gene encodes vitamin D binding protein (VDBP/DBP)(), the principal carrier that transports vitamin D metabolites through the blood. rs705117 is an intronic variant in GC that has been independently associated with circulating VDBP concentrations — separate from the well-known isoform-defining variants rs4588...

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rs11545076 Promoter variant that increases GGH expression, accelerating hydrolysis of intracellular folate polyglutamates and reducing cellular folate retention
Chromosome 8 Risk Allele C Category Methylation & Detox Tags Methylation, Folate, B Vitamins, Homocysteine, Detoxification

Inside every cell, folate is trapped in a useful form: attached to chains of glutamate molecules called polyglutamates(). This trapping is essential — polyglutamated folate is the working form that enzymes in the methylation cycle and nucleotide synthesis actually use. GGH (gamma-glutamyl hydrolase) is the enzyme...

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rs11705701 Upstream regulatory variant in IGF2BP2 that shifts mRNA isoform balance in adipose tissue and pancreatic islets, impairing insulin secretion and increasing insulin resistance risk, with moderate evidence for type 2 diabetes susceptibility
Chromosome 3 Risk Allele A Category Blood Sugar & Diabetes Tags Insulin, Insulin Resistance, Diabetes, Obesity, Energy Metabolism, Fat Distribution

IGF2BP2 is an mRNA-binding protein with an unusual job: it acts as a post-transcriptional regulator of insulin-like growth factor 2 (IGF2), a signaling molecule critical for pancreatic development, beta cell survival, and adipose tissue metabolism. The rs11705701 variant sits about 2 kilobases upstream of the gene...

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rs12044852 Intronic CD58 variant in strong LD with rs2300747 (r²=0.929); the C allele drives MS susceptibility (OR 2.22 for CC) and predicts poor IFN-beta therapy response — the pharmacogenomic dimension absent from its LD partner
Chromosome 1 Risk Allele C Category Neurology & Cognition Tags Immune & Gut, Multiple Sclerosis, T-Cell Regulation, Autoimmune, Neuroinflammation, Drug Metabolism

The CD58 gene(https://pubmed.ncbi.nlm.nih.gov/19237575/) harbours a cluster of intronic variants in its first intron that collectively regulate LFA-3 expression and multiple sclerosis susceptibility. The rs12044852 C/A polymorphism is one of three strongly associated markers in this locus (alongside rs2300747 and...

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rs12141494 Intronic variant in CHI3L1 (intron 6) independently associated with asthma severity and airway YKL-40 expression; the A allele drives higher circulating YKL-40 levels and worse airflow obstruction through a mechanism that is independent of the well-known promoter variant rs4950928
Chromosome 1 Risk Allele A Category Allergy & Atopic Disease Tags Asthma, Lung Health, Inflammation, Biomarkers, Immune Response

CHI3L1 encodes YKL-40(https://pubmed.ncbi.nlm.nih.gov/36844232/), making it one of the most clinically relevant biomarkers of non-T2, severe asthma. Most genetic studies of CHI3L1 have focused on the promoter variant rs4950928 (-131CG), which modulates transcription start site activity and produces the largest...

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rs12304921 Intronic variant in SLC11A2 (DMT1), the primary intestinal iron transporter, associated with altered iron absorption regulation and T2DM susceptibility through the iron-beta-cell axis
Chromosome 12 Risk Allele G Category Fat Storage & Energy Tags Iron, Diabetes, Energy Metabolism, Metabolic Health, Minerals, Insulin

The SLC11A2 gene encodes Divalent Metal Transporter 1 (DMT1)(https://medlineplus.gov/genetics/gene/slc11a2/), the most important protein controlling how much dietary iron enters your body. Located at chromosome 12q13.12, SLC11A2 is expressed in the duodenum, liver, kidney, and — critically for diabetes risk — in...

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rs12713559 Rare APOB missense variant reducing LDL-receptor binding affinity by ~40-50%, classified as a variant of uncertain significance for familial-defective apolipoprotein B
Chromosome 2 Risk Allele A Category Cholesterol & Lipoproteins Tags Cholesterol, Cardiovascular, Fat Metabolism, Statins

Apolipoprotein B-100 (ApoB) is the structural backbone of LDL particles — every LDL particle carries exactly one ApoB-100 protein, and it is this protein that docks with the LDL receptor on liver cells to clear LDL from the bloodstream. The rs12713559 variant causes a cysteine to replace an arginine at position 3558...

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rs12980275 Downstream variant near IFNL3 — third IL28B locus predictor of hepatitis C spontaneous clearance and treatment response; preferred tag for HCV pharmacogenomics in Asian populations where it was the original GWAS discovery signal
Chromosome 19 Risk Allele G Category Pharmacogenomics Tags Innate Immunity, Inflammation, Infectious Disease, Interferon, Immune & Autoimmune, Drug Metabolism

When Tanaka and colleagues performed a genome-wide association study in Japanese hepatitis C patients in 2009, two variants near the IL28B gene emerged with striking statistical force: rs8099917 and rs12980275. The latter — a simple A-to-G change on chromosome 19 — reached P=1.93×10⁻¹³ for null virological response...

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rs150812083 Rare PER3 missense variant that destabilizes the circadian clock protein, shortening circadian period and causing familial advanced sleep phase syndrome 3 with associated seasonal mood vulnerability
Chromosome 1 Risk Allele G Category Hormones & Sleep Tags Circadian, Sleep, Chronotype, Mood, Depression, Melatonin

The PER3 gene(https://www.ncbi.nlm.nih.gov/gene/8863) is a master timekeeper in every cell of your body. Its protein accumulates during the day, enters the nucleus, and shuts down the very transcription machinery that made it — completing one oscillation roughly every 24 hours. The rs150812083 variant swaps a...

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rs174553 Intronic variant in the FADS1 gene cluster that reduces delta-5 desaturase activity, impairing conversion of DGLA to arachidonic acid (omega-6) and dietary omega-3 precursors toward EPA, leaving G allele carriers with lower circulating long-chain PUFAs and greater dependence on preformed EPA and DHA
Chromosome 11 Risk Allele G Category Triglycerides & Fatty Acids Tags Omega-3, Fat Metabolism, Cardiovascular, Nutrition & Metabolism, Inflammation

Your body cannot synthesize omega-3 and omega-6 fats from scratch. It starts with short-chain precursors — alpha-linolenic acid (ALA) from flaxseed and walnuts for omega-3, linoleic acid (LA) from vegetable oils for omega-6 — and extends them through a series of enzymatic steps into the longer-chain forms that...

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