rs11874286 (RPL12P40): BMI and metabolic syndrome locus
Key takeaways
- This variant sits near two pseudogenes, RPL12P40 and RN7SKP182, in genomic territory mapped by BMI and metabolic syndrome studies covering up to 5 million people
- Genetic signals for adiposity concentrate in brain and neural tissue, suggesting the central nervous system plays a larger role in body weight regulation than fat tissue itself
- A study of nearly 5 million people identified 1,307 loci for metabolic syndrome, all enriched in brain tissue, placing this variant in a highly polygenic landscape
- GTEx data shows the ALT allele reduces nearby gene expression in testis tissue (p=2.6x10^-7), an unexpected tissue-specific finding whose health significance is not established
- No lifestyle factors have been specifically linked to this variant in the reviewed studies
Key takeaways
- rs11874286 sits near two pseudogenes, RPL12P40 and RN7SKP182 (the locus), and falls within the genomic landscape mapped by large-scale studies of body mass index and metabolic syndrome involving up to 5 million participants
- Genetic signals for adiposity are enriched specifically in brain and neural tissues, indicating a central nervous system role in body weight regulation
- A multivariate genome-wide study of metabolic syndrome in nearly 5 million people identified 1,307 associated loci enriched in brain tissue, placing this variant in a highly polygenic context
- GTEx data links the ALT allele to reduced expression of a nearby gene (ENSG00000268566) specifically in testis tissue
- No lifestyle factors have been specifically linked to this variant in the available evidence base
What the research says Large-scale genome-wide association studies (GWAS - studies that scan millions of genetic markers across the genome simultaneously) have characterized the genetic architecture of body mass index (BMI) and metabolic syndrome (MetS - a cluster of interrelated risk factors including central obesity, high blood sugar, high blood pressure, and abnormal cholesterol) across populations totaling up to 5 million participants. A GWAS across approximately 1.1 million people of European ancestry and 100,000 of African ancestry identified 906 genome-wide significant loci for BMI (364 novel), with a 2,446-variant genetic risk score associating with 316 diagnoses, of which 96.5% showed increased disease risk. A multivariate GWAS of MetS in 4,947,860 people identified 1,307 associated loci enriched primarily in brain tissues; separately, an analysis of 119,000 sibling pairs estimated BMI heritability at 0.55 +/- 0.07, with substantial residual heritability distributed polygenically across many loci beyond those already identified.
Reported associations
- Body mass index: A GWAS of approximately 1.1 million European-ancestry participants identified 906 genome-wide significant BMI loci (364 novel); a 2,446-variant BMI polygenic risk score was associated with 316 diagnoses in a large biobank, with 96.5% showing increased disease risk
- Adiposity factors: A 4-factor genomic structural equation model applied to 18 anthropometric measures found the genetic architecture of the adiposity factor enriched specifically in neural tissues and pathways, distinct from the genetic signals underlying fat distribution, which showed broader enrichment across physiological systems
- Metabolic syndrome: A multivariate GWAS in 4,947,860 people identified 1,307 MetS-associated loci enriched in brain tissue; Mendelian randomization analyses (a technique that uses genetic variants to test for causal effects) linked genetic MetS risk to conditions spanning multiple organ systems beyond cardiometabolic disease
- BMI heritability and polygenicity: An analysis of 119,000 sibling pairs estimated BMI heritability at 0.55 +/- 0.07 using a recombination-rate-stratified identity-by-descent method; GWAS linkage signals colocalized with identified loci, and substantial residual heritability was found to be polygenic and enriched near these loci
Evidence quality The studies providing genomic context for this locus are among the largest GWAS conducted for adiposity-related traits, with sample sizes from approximately 119,000 sibling pairs to nearly 5 million participants. Standard genome-wide significance thresholds (p < 5x10^-8) were applied throughout. Findings consistently describe a highly polygenic genetic architecture for BMI and MetS, with strong enrichment in neural tissues across all studies reviewed. BMI heritability was estimated at 0.55 +/- 0.07 by sibling-pair analysis; MetS component heritability ranges from approximately 0.26 (type 2 diabetes) to 0.61 (hypertension) based on prior literature cited by the reviewed studies. The provided study excerpts are primarily introductions and abstracts rather than per-variant results tables, so individual effect sizes (odds ratios or beta coefficients) for rs11874286 specifically are not available in this evidence base. No conflicting findings were observed across the four studies reviewed. Given the highly distributed polygenic architecture of these traits, evidence for any individual locus should be considered preliminary absent further independent replication.
Tissue-specific expression effects
- ENSG00000268566: The ALT allele is associated with reduced expression in testis tissue across 953 GTEx donors (p=2.6x10^-7) GTEx Portal
Lifestyle considerations No lifestyle considerations on file for this variant.
Frequently asked questions
What is rs11874286?
rs11874286 is a genetic variant (single nucleotide polymorphism, or SNP) located near two pseudogenes, RPL12P40 and RN7SKP182. Pseudogenes are DNA sequences that resemble functional genes but have lost their original coding role. This variant falls in genomic territory studied in large-scale GWAS of body weight and metabolic health.
What genes are near rs11874286?
The variant sits near RPL12P40 (a pseudogene related to the ribosomal protein L12 gene family) and RN7SKP182 (a pseudogene derived from a small nuclear RNA gene). GTEx data shows the ALT allele is associated with reduced expression of a nearby gene (ENSG00000268566) specifically in testis tissue.
Is rs11874286 linked to BMI or obesity?
This variant falls within the genomic landscape characterized by GWAS studies of BMI covering approximately 1.1 million people and metabolic syndrome studies of up to 5 million people. Large-scale studies have collectively identified hundreds to over a thousand genetic loci associated with BMI and metabolic syndrome, and this locus sits within that mapped territory. Specific per-variant effect sizes for rs11874286 were not available in the study excerpts reviewed here.
What does the GTEx data show for rs11874286?
GTEx v11 data (953 donors) shows the ALT allele is associated with reduced expression of ENSG00000268566 in testis tissue (p=2.6x10^-7). This is an eQTL signal, meaning the variant influences gene activity in that tissue. The functional health consequences of this expression change have not been established by the reviewed studies.
How large are the studies behind this variant?
The supporting studies span from approximately 119,000 sibling pairs (used to estimate BMI heritability at 0.55) to nearly 5 million participants in a metabolic syndrome GWAS. The BMI GWAS covered approximately 1.1 million people of European ancestry and 100,000 of African ancestry. These are among the largest genetic studies ever conducted for these traits.