SMAD3
SMAD3geneSMAD3 is a CAD-risk effector in smooth muscle cells that controls TGF-β-mediated inflammation, matrix remodeling, and fibrous-cap stability.
Pathway placement
Cascade stepPlaque inflammation
Confidencemedium
RationaleTGF-β signaling in SMCs; regulates inflammation, fibrosis, and cap stability.
Also acts inCap degradation / rupture, Endothelial activation/erosion
Druggability
DruggableYes
Known drugs / candidates0
Small-molecule tractableYes
Antibody tractableYes
EnsemblENSG00000166949
Type I vs non-Type I discrimination
ScoresNon-Type-I-associated
R — rupture / Type-I—
C — non-Type-I67
A — assay feasibility52
E — evidence strength42
T1DI (composite)5
Specificity differential (R−C)-51.7
Non-Type-I axis panel
Does this marker also move in each non-Type-I setting? mag 0–3; higher means less Type-I-specific. n/a = no evidence retrieved, which is not the same as no change.
2sepsis / systemic inflammationmag 2
2anemia / acute blood lossn/a
2hypovolemia / dehydrationn/a
2tachyarrhythmiamag 2
2hypoxemia / respiratory failuremag 2
2hypertensive emergencyn/a
2high-demand / peri-operative stressmag 2
3sudden cardiac deathn/a
4aPCI-related periproceduraln/a
4bstent thrombosisn/a
4cin-stent restenosismag 2
5CABG-relatedmag 2
Coverage: 6/12 axes with evidence
Tier: deep-scored (abstract-extracted) · 17 supporting references. See the discrimination table for all markers.
Assay & specimen
Class-level default (no specific cleared assay)— generic method inferred from analyte class; confirm against a specific product insert before use.
Specimen
Whole blood — gene is not a circulating analyte; measure protein product or genotype
Collection tube
K2-EDTA whole blood (lavender-top)
Method / principle
SNP genotyping / sequencing; or immunoassay of encoded protein
Reagent / substrate
Allele-specific primers/probes (TaqMan) or NGS panel; or antibody for protein
Platform
qPCR / NGS / array
Turnaround · availability
Send-out · Genotyping widely available; protein assay variable
Human genetic evidence
3
GWAS associations
Traits: myocardial infarction
Literature evidence(3)
- Coronary artery disease-associated variants regulate vascular smooth muscle cell gene expression.Nature cardiovascular research · 2025 · PMID 41057608 · doi
- Genetic Regulatory Mechanisms of Smooth Muscle Cells Map to Coronary Artery Disease Risk Loci.American journal of human genetics · 2018 · PMID 30146127 · doi
- Integrative functional genomics identifies regulatory mechanisms at coronary artery disease loci.Nature communications · 2016 · PMID 27386823 · doi