Complement C3
C3proteinCentral complement component driving local inflammatory amplification and thrombus-associated innate immune activation.
Pathway placement
Cascade stepCoagulation & thrombus formation
Confidencemedium
RationaleComplement cascade activation amplifies local inflammation and thrombus formation.
Also acts inVascular inflammation, Platelet activation
Druggability
DruggableYes
Known drugs / candidates3
Small-molecule tractableYes
Antibody tractableYes
EnsemblENSG00000125730
Type I vs Type II discrimination
ScoresType-II-associated
R — rupture / Type-I—
C — confounder / Type-II67
A — assay feasibility72
E — evidence strength39
T1DI (composite)7
Specificity differential (R−C)-52
Confounder panel (Type-II drivers)
1sepsis / systemic inflammationmag 2
2anemia / acute blood lossn/a
3hypovolemia / dehydrationn/a
4tachyarrhythmian/a
5hypoxemia / respiratory failuren/a
6hypertensive emergencymag 2
7high-demand / peri-operative stressn/a
Coverage: 2/7 confounders with evidence
Tier: deep-scored (abstract-extracted) · 3 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
Serum or plasma
Collection tube
Serum separator (gold/red-top, SST) · K2/K3-EDTA (lavender-top)
Method / principle
Sandwich immunoassay (ELISA) — research-grade unless a cleared assay exists
Reagent / substrate
Matched anti-target antibody pair (capture + labeled detection)
Platform
ELISA microplate or multiplex (Luminex/MSD)
Turnaround · availability
Send-out / research · Research-grade (no universal clinical assay)
Literature evidence(3)
- Costunolide Reduces DN Inflammatory Response and Renal Thrombosis by Inhibiting NET Formation.Journal of diabetes research · 2025 · PMID 40709100 · doi
- Local complement activation triggers neutrophil recruitment to the site of thrombus formation in acute myocardial infarction.Thrombosis and haemostasis · 2009 · PMID 19718478 · doi
- Processing of serum proteins underlies the mass spectral fingerprinting of myocardial infarction.Journal of proteome research · 2003 · PMID 12938926 · doi