OAS1 Gene

What is the OAS1 gene?

OAS1 encodes 2'-5'-oligoadenylate synthetase 1, a protein involved in innate antiviral defense / RNase L activation. It belongs to the Antiviral category and is part of the Viral Defense & Interferon Response biological cluster. OAS1 encodes an antiviral enzyme that synthesizes 2-5A oligoadenylates upon dsRNA recognition, activating RNase L to degrade viral RNA.

Biological role and pathway

OAS1 is involved in the innate antiviral defense / RNase L activation pathway, which plays a central role in regulating physiological processes relevant to immune defence, cellular energy, and systemic homeostasis. Genes within the Viral Defense & Interferon Response 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 OAS1 gene have been studied in relation to antiviral and chronic illness. Each variant represents a single nucleotide position where individuals may carry different alleles.

• rs10774671— OAS1 variant
• rs2285933— OAS1 variant

Conditions studied in relation to OAS1

Research into OAS1 variants has explored associations with the following conditions. These are areas of scientific investigation and do not imply that OAS1 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 OAS1 and related genes in the viral defense & interferon response 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 Viral Defense & Interferon Response pathway

OAS1 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