CACNA1A Gene

What is the CACNA1A gene?

CACNA1A encodes calcium voltage-gated channel subunit alpha1 a, a protein involved in calcium channel signaling. It belongs to the Pain Sensory category and is part of the Pain & Sensory Processing biological cluster. CACNA1A encodes the Cav2.1 (P/Q-type) voltage-gated calcium channel, critical for neurotransmitter release at central and peripheral synapses.

Biological role and pathway

CACNA1A is involved in the calcium channel signaling pathway, which plays a central role in regulating physiological processes relevant to immune defence, cellular energy, and systemic homeostasis. Genes within the Pain & Sensory Processing 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 in these systems — particularly under conditions of physiological stress such as viral infection or prolonged illness.

Known genetic variants

The following variants (SNPs) in the CACNA1A gene have been studied in relation to pain sensory and chronic illness. Each variant represents a single nucleotide position where individuals may carry different alleles.

• rs4813— CACNA1A variant
• rs57520768— CACNA1A variant

Conditions studied in relation to CACNA1A

Research into CACNA1A variants has explored associations with the following conditions. These are areas of scientific investigation and do not imply that CACNA1A causes or treats any condition.

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 CACNA1A and related genes in the pain & sensory processing pathway.

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.

Related genes in the Pain & Sensory Processing pathway

CACNA1A does not act in isolation. The following genes are functionally related and may be analysed together for a more complete picture of your genetic predispositions.

Frequently asked questions