Pathway / Platelet adhesion & activation

Thrombopoietin

THPOprotein

Thrombopoietin activates platelets and couples thrombosis to inflammation, driving coronary thrombus formation.

Pathway placement

Cascade stepPlatelet adhesion & activation

Confidencehigh

RationaleDirect platelet activation and immunothrombosis amplifier.

Also acts inVascular inflammation

Druggability

DruggableYes

Known drugs / candidates0

Small-molecule tractableYes

Antibody tractableYes

EnsemblENSG00000090534

Type I vs Type II discrimination

ScoresType-II-associated

R — rupture / Type-I

—

C — confounder / Type-II

A — assay feasibility

E — evidence strength

T1DI (composite)

Specificity differential (R−C)-40.6

Confounder panel (Type-II drivers)

1sepsis / systemic inflammationmag 2

2anemia / acute blood lossn/a

3hypovolemia / dehydrationn/a

4tachyarrhythmian/a

5hypoxemia / respiratory failuremag 2

6hypertensive emergencyn/a

7high-demand / peri-operative stressmag 1

Coverage: 3/7 confounders with evidence

Tier: deep-scored (abstract-extracted) · 9 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(1)

Thrombopoietin participates in platelet activation in COVID-19 patients.
EBioMedicine · 2022 · PMID 36242922 · doi