rs117007889 (ELAPOR2): IL-6 Cytokine Response Variant
Key takeaways
- rs117007889 is one of eight newly identified genetic variants linked to how much IL-6 the immune system makes in response to bacteria
- IL-6 levels after bacterial exposure vary more than 1,000-fold between individuals, and this locus contributes to that variation
- The finding comes from a systems immunology study of 307 children measuring 28 cytokines across 15 different immune stimuli
- This is a preliminary finding from a single cohort; independent replication in other populations has not been reported in the available literature
Key takeaways
- rs117007889 is one of eight newly identified genetic variants linked to how much IL-6 the immune system makes in response to bacteria
- IL-6 levels after bacterial exposure vary more than 1,000-fold between individuals, and this locus contributes to that variation
- The finding comes from a systems immunology study of 307 children measuring 28 cytokines across 15 different immune stimuli
- This is a preliminary finding from a single cohort; independent replication in other populations has not been reported in the available literature
What the research says A systems immunology study measured 28 cytokine responses to 15 stimuli - including the bacteria Haemophilus influenzae and Streptococcus pneumoniae - in peripheral blood mononuclear cells (PBMCs, a category of white blood cells central to immune surveillance) from 307 children in a population-based birth cohort. Using machine learning, the researchers identified nine genomic loci acting as cytokine Quantitative Trait Loci (cQTLs) - locations in the genome where genetic variation influences how much of the inflammatory signaling protein IL-6 those immune cells produce when exposed to bacterial pathogens; eight of these nine, including the ELAPOR2 locus harboring rs117007889, were novel at the time of publication. Cytokine levels after bacterial stimulation were found to vary by more than 1,000-fold between individuals, underscoring the scale of genetic influence on immune response variability.
Reported associations
- IL-6 cytokine response to bacterial stimulation (novel cQTL): rs117007889 in the ELAPOR2 locus was reported as a novel cytokine Quantitative Trait Locus - a genetic variant influencing how much IL-6 immune cells produce when exposed to bacterial pathogens - identified in a birth cohort of 307 children via a systems immunology approach integrating machine learning, 28 cytokines, and 15 stimuli
Evidence quality This association derives from a single population-based birth cohort of 307 children and has not been independently replicated in the provided source material. The variant is one of eight described as novel at the time of publication, indicating it had not previously been linked to IL-6 cytokine responses in the prior literature. No specific effect size (such as the per-allele change in IL-6 level) or exact p-value for rs117007889 was available in the provided study excerpt. The very large inter-individual variability in cytokine levels (greater than 1,000-fold) is biologically consistent with multiple genetic contributors, but the modest cohort size and absence of replication mean these findings should be considered preliminary.
Lifestyle considerations No lifestyle considerations on file for this variant.
Frequently asked questions
What is the ELAPOR2 gene?
ELAPOR2 is the gene region where rs117007889 is located. Based on available research, this locus was identified as influencing the production of IL-6, an inflammatory signaling protein, when immune cells encounter bacterial pathogens. Detailed functional characterization of the gene itself was not described in the source study excerpt.
What does rs117007889 do?
rs117007889 is a cytokine Quantitative Trait Locus (cQTL), meaning it is a genetic variant that influences how much of the inflammatory protein IL-6 is produced by immune cells when they encounter bacteria. It was identified as one of eight novel such variants in a systems immunology study of 307 children.
Is rs117007889 linked to infection risk or respiratory disease?
The study that identified this variant was designed to investigate immune response variability and its potential relationship to respiratory disease risk, but it did not report a direct clinical outcome link for rs117007889 specifically. The association reported was with IL-6 levels in response to bacterial stimulation in a controlled research setting.
How strong is the evidence for rs117007889?
Evidence is currently preliminary. The variant was identified in a single cohort of 307 children, and no independent replication study is available in the provided literature. Specific effect sizes and p-values for this locus were not included in the published excerpt available for review.
What is a cytokine QTL (cQTL)?
A cytokine Quantitative Trait Locus (cQTL) is a location in the genome where genetic variation influences how much of a particular cytokine - a protein the immune system uses for cell-to-cell signaling - a person's cells produce under specific conditions, such as exposure to a bacterium or virus.