SMAD2 Gene

What is the SMAD2 gene?

SMAD2 encodes smad family member 2, a protein involved in TGF-beta receptor signaling. It belongs to the Signaling category and is part of the Cellular Signaling biological cluster. SMAD2 is an intracellular mediator of TGF-beta receptor signals, transducing them to the nucleus to regulate gene expression.

Biological role and pathway

SMAD2 is involved in the TGF-beta receptor signaling pathway, which plays a central role in regulating physiological processes relevant to immune defence, cellular energy, and systemic homeostasis. Genes within the Cellular Signaling 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 SMAD2 gene have been studied in relation to signaling and chronic illness. Each variant represents a single nucleotide position where individuals may carry different alleles.

• rs2796821— SMAD2 variant

Conditions studied in relation to SMAD2

Research into SMAD2 variants has explored associations with the following conditions. These are areas of scientific investigation and do not imply that SMAD2 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 SMAD2 and related genes in the cellular signaling 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 Cellular Signaling pathway

SMAD2 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