American Society of Hirudotherapy

W. pigra Chromosome-Level Genome (79 Antithrombotic Genes)

Chromosome-level W. pigra genome unexpectedly carries 79 antithrombotic genes — more than the 72 in blood-sucking H. manillensis (Liu 2024).

Preclinical / mechanisticLast updated: 2026-05-28 · Reviewed by ASH Editorial Board

Mechanistic Evidence Box

Preclinical / mechanistic
Page type
Compound profile
Evidence type
Chromosome-level W. pigra genome unexpectedly carries 79 antithrombotic genes — more than the 72 in blood-sucking H. manillensis (Liu 2024).
Evidence level
Mechanistic discussion
Drug vs leech
Purified natural compound

Clinical translation limit

Genome-level antithrombotic gene count does NOT translate to clinical efficacy. Individual gene products require functional characterization. No FDA-approved derivative; W. pigra is a non-hematophagous TCM leech, not the FDA-cleared K040187 medicinal leech.

Molecular Profile

Category
Anticoagulant
Evidence tier
Preclinical
Source species
Whitmania pigra
Discovered
2024 · Liu Z et al.
W. pigra Chromosome-Level Genome (79 Antithrombotic Genes) molecular structure

Biological Targets

  • coagulation cascade (predicted across 20 antithrombotic gene families)

Key Citations

  1. Liu Z et al. (2024), Genes (Basel) · PMID 38397154

External Resources

    Related Anticoagulant Compounds

    This website provides educational information and does not constitute medical advice, diagnosis, or treatment recommendations. Medicinal leech therapy carries clinically meaningful risks and should be performed only by qualified clinicians under institutionally approved protocols. FDA 510(k) clearance for medicinal leeches is limited to specific indications; investigational and off-label discussions are labeled accordingly. For patient-specific guidance, consult a qualified healthcare provider.