Phosphatidylinositol 3-kinase

gene

PI3K signaling drives platelet activation and endothelial progenitor cell mobilization, regulating thrombotic and reparative responses.

Pathway placement

Cascade stepPlatelet adhesion & activation

Confidencemedium

RationalePlatelet activation signaling; EPC mobilization and vascular repair.

Also acts inEndothelial activation/erosion

Druggability

Not assessed (no mapped human gene target).

Type I vs Type II discrimination

ScoresShared / rises in both

R — rupture / Type-I

C — confounder / Type-II

A — assay feasibility

E — evidence strength

T1DI (composite)

Specificity differential (R−C)+11.1

Confounder panel (Type-II drivers)

1sepsis / systemic inflammationn/a

2anemia / acute blood lossn/a

3hypovolemia / dehydrationn/a

4tachyarrhythmiamag 2

5hypoxemia / respiratory failuremag 2

6hypertensive emergencyn/a

7high-demand / peri-operative stressmag 1

Coverage: 3/7 confounders with evidence

Tier: deep-scored (abstract-extracted) · 19 supporting references. See the discrimination table for all markers.

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