rs7997012
Variant in the HTR2A gene (5-Hydroxytryptamine Receptor 2A)
rs7997012 is a single nucleotide polymorphism (SNP) in the HTR2A gene, involved in serotonin post-synaptic signaling. Variants at this position have been studied in relation to immune function, metabolism, and chronic illness.
This page is for educational and informational purposes only. Not a diagnostic tool. Always consult a qualified healthcare provider.
What is the rs7997012 variant?
rs7997012 is a SNP (single nucleotide polymorphism) in the HTR2A (5-Hydroxytryptamine Receptor 2A) gene. It belongs to the Neurotransmitter category and is part of the Neurological & Cognitive Function biological cluster. HTR2A encodes the 5-HT2A serotonin receptor, a Gq-coupled receptor involved in sensory perception, mood, and cognition.
Biological role and pathway
This variant sits within the HTR2A gene, which is involved in the serotonin post-synaptic signaling pathway. Genes within the Neurological & Cognitive Function cluster work together to maintain balanced function across interconnected biological systems.
Variants in genes within this pathway may influence an individual's predisposition to altered function — particularly under conditions of physiological stress such as viral infection or prolonged illness.
rs7997012 and Long COVID / ME-CFS research
5-HT2A receptor variants affect serotonergic signaling in the cortex; they may influence sensory hypersensitivity, sleep quality, and psychiatric symptoms in Long COVID.
This information is based on published research and does not constitute medical advice. See references below.
Parent gene: HTR2A
rs7997012 is one of 3 known variants in the HTR2A gene. To understand the full biological context of this variant, explore the parent gene page.
View HTR2A gene page →Conditions studied in relation to rs7997012
Research into HTR2A variants including rs7997012 has explored associations with the following conditions. These are areas of scientific investigation and do not imply causation.
Genetic insights from DNA data
Consumer DNA files from 23andMe, AncestryDNA, and MyHeritage contain raw SNP data. When you upload your file to ChronicDNA, the analysis engine checks your genotype against a curated panel of 80+ genes selected for their relevance to Long COVID, ME/CFS, and connected biological pathways - some of which may include HTR2A and the rs7997012 variant.
The report is educational - it explains which variants you carry, what the research says about them, and how they fit into the biological pathways most relevant to chronic illness. Results are presented in plain English with appropriate scientific context, no medical jargon, no scare tactics. All results should be discussed with a qualified healthcare provider.
Other variants in the HTR2A gene
The following variants in HTR2A are also studied in relation to chronic illness and may be analysed together for a more complete picture.
Frequently asked questions
What is the rs7997012 variant in the HTR2A gene?
rs7997012 is a single nucleotide polymorphism (SNP) located in the HTR2A (5-Hydroxytryptamine Receptor 2A) gene, which is involved in serotonin post-synaptic signaling. HTR2A encodes the 5-HT2A serotonin receptor, a Gq-coupled receptor involved in sensory perception, mood, and cognition.
How may the rs7997012 variant relate to Long COVID or ME/CFS?
5-HT2A receptor variants affect serotonergic signaling in the cortex; they may influence sensory hypersensitivity, sleep quality, and psychiatric symptoms in Long COVID.
Can a consumer DNA test detect the rs7997012 variant?
Many consumer DNA tests such as 23andMe, AncestryDNA, and MyHeritage genotype common SNPs. ChronicDNA analyses your raw DNA file and reports on variants studied in relation to chronic illness, immune function, and metabolism. This is not a diagnostic service — results are informational and educational only.
Find out if you carry the rs7997012 variant
Upload your DNA data from 23andMe, AncestryDNA, or MyHeritage and receive a personalised report covering >80 genes relevant to Long COVID and ME/CFS.
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References
The following publications were used in compiling the research context for HTR2A and its variants. This is not an exhaustive literature review.
- [1]PMID: 33664986
- [2]Nature Genetics
- [3]Neuropsychopharmacology