Genetics of Dysautonomia
Dysautonomia encompasses a range of conditions involving autonomic nervous system dysfunction, including POTS, orthostatic hypotension, and vagal dysfunction. It is among the most common Long COVID presentations and has both genetic and autoimmune contributors.
This page is for educational and informational purposes only. Not a diagnostic tool. Always consult a qualified healthcare provider.
What is Dysautonomia?
The autonomic nervous system (ANS) controls involuntary body functions including heart rate, blood pressure, digestion, temperature regulation, and bladder function. Dysautonomia — dysfunction of these autonomic processes — manifests across a spectrum from mild orthostatic intolerance to severe incapacitating dysfunction. In Long COVID, dysautonomia is reported in up to 30% of patients, manifesting primarily as POTS-like symptoms. Genetic variants in adrenergic signalling, baroreflex regulation, and small fibre neuropathy pathways may predispose individuals to developing dysautonomia following viral infection or physiological stress.
Biological pathways commonly discussed in relation to Dysautonomia
Research into Dysautonomia and Autonomic Nervous System Dysfunction has highlighted several biological pathways that may be relevant. Genetic variants within these pathways may influence individual susceptibility, symptom severity, or the trajectory of the condition.
Sympathetic Signalling
The sympathetic nervous system drives fight-or-flight responses. Adrenergic receptor variants (ADRA1A, ADRB1, ADRB2) and catecholamine metabolism genes (COMT, DBH) influence sympathetic tone.
Parasympathetic Vagal
The vagus nerve mediates parasympathetic cardiac and visceral regulation. Variants affecting vagal nerve function may impair heart rate variability and autonomic balance.
Baroreflex Regulation
The baroreflex maintains blood pressure homeostasis. Variants in ACE, AGT, and related genes may affect baroreflex sensitivity and orthostatic blood pressure responses.
Small Fibre Neuropathy
Small autonomic nerve fibres regulate microvascular tone, sweating, and organ function. Genetic variants affecting small fibre integrity may predispose to autonomic neuropathy.
Key genes studied in relation to Dysautonomia
The following genes have been studied in relation to Dysautonomia and Autonomic Nervous System Dysfunction. These genes span the biological pathways most commonly discussed in this area of research.
16 genes total studied in relation to Dysautonomia across the ChronicDNA dataset.
Genetic variants commonly discussed
The following genetic variants (SNPs) are found in genes that have been studied in relation to Dysautonomia. Each variant represents a position in the genome where individuals may carry different alleles.
37 variants total across genes studied in relation to Dysautonomia.
How personal DNA data may provide educational insights
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 relate to areas such as Dysautonomia.
This is not a diagnostic service. Genetic variants do not determine whether you have Dysautonomia, nor do they predict your clinical outcomes. 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. All results should be discussed with a qualified healthcare provider.
Related conditions and pathways
Dysautonomia shares biological pathways and genetic associations with the following related conditions and areas of research.
Frequently asked questions
What is dysautonomia and how does it relate to Long COVID?
Dysautonomia is dysfunction of the autonomic nervous system controlling heart rate, blood pressure, and other involuntary functions. In Long COVID, it manifests primarily as POTS-like symptoms, likely driven by a combination of autoantibodies against autonomic receptors, small fibre neuropathy, and reduced blood volume.
What is the difference between POTS and dysautonomia?
Dysautonomia is a broad category covering any autonomic dysfunction. POTS (Postural Orthostatic Tachycardia Syndrome) is a specific form characterised by excessive heart rate increase on standing. POTS is the most common dysautonomia form seen in Long COVID.
Which genes are studied in relation to dysautonomia?
Key genes include SLC6A2 (NET), ADRA1A, ADRB1, ADRB2, COMT, DBH, ACE, and CHRNA7. These cover norepinephrine handling, adrenergic receptor signalling, blood pressure regulation, and acetylcholine neurotransmission.
Can genetic testing help understand dysautonomia susceptibility?
Variants in adrenergic and norepinephrine transport genes may provide educational insights into autonomic pathway biology. ChronicDNA analyses these variants as part of broader chronic illness genetic context — not to diagnose dysautonomia.
Related articles
- Long COVID Dysautonomia: What Your Genes May Reveal
Explore how genes in the autonomic nervous system may relate to Long COVID dysautonomia, including POTS, heart rate changes and orthostatic intolerance.
- Long COVID POTS: Symptoms, Testing and Genetics
Learn how Long COVID POTS affects heart rate, how standing and tilt table tests assess it, and which genes research is exploring.
Explore DNA insights
If you already have DNA data from 23andMe, AncestryDNA, or MyHeritage, upload your raw file to ChronicDNA and receive a personalised educational report covering genes studied in relation to Dysautonomia and connected biological pathways.
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16 genes · 37 variants analysed in relation to Dysautonomia