NOS2 Gene

What is the NOS2 gene?

NOS2 encodes nitric oxide synthase 2 (inducible), a protein involved in nitric oxide-mediated immunity. It belongs to the Immune Signaling category and is part of the Innate Immunity & Pattern Recognition biological cluster. NOS2 encodes inducible NOS (iNOS), which produces high levels of nitric oxide in macrophages and other immune cells as an antimicrobial agent.

Biological role and pathway

NOS2 is involved in the nitric oxide-mediated immunity pathway, which plays a central role in regulating physiological processes relevant to immune defence, cellular energy, and systemic homeostasis. Genes within the Innate Immunity & Pattern Recognition 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 NOS2 gene have been studied in relation to immune signaling and chronic illness. Each variant represents a single nucleotide position where individuals may carry different alleles.

• rs2297518— NOS2 variant
• rs1060826— NOS2 variant

Conditions studied in relation to NOS2

Research into NOS2 variants has explored associations with the following conditions. These are areas of scientific investigation and do not imply that NOS2 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 NOS2 and related genes in the innate immunity & pattern recognition 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 Innate Immunity & Pattern Recognition pathway

NOS2 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