American Society of Hirudotherapy

Desirudin

Recombinant hirudin variant — FDA-approved 2003 for prophylaxis of DVT after hip replacement surgery.

Studied off-labelLast updated: 2026-05-26 · Reviewed by ASH Editorial Board
Molecular weight of Desirudin compared with other characterized leech-derived compoundsHementerin80 kDaHementin80 kDaHementin-Like Protein (HLP-1)80 kDaLeech Collagenase70 kDaHaemadipsa yanyuanensis Progr…70 kDaLeech Apyrase67 kDaCalin65 kDaHyaluronidase60 kDaAntithrombin III binding prot…58 kDaCollagenolytic Fibrinolysin55 kDaLeech Thrombospondin-Like Pro…50 kDaDesirudin7 kDa
Molecular weight (kilodaltons) of Desirudin (highlighted) alongside other characterized leech salivary compounds. Smaller proteins/peptides generally diffuse and act faster.

Mechanistic Evidence Box

Studied off-label
Page type
Compound profile
Evidence type
Recombinant hirudin variant — FDA-approved 2003 for prophylaxis of DVT after hip replacement surgery.
Evidence level
FDA-cleared regulatory context
Drug vs leech
Recombinant (genetically expressed)
Safety domains
Bleeding · Allergy / anaphylaxis

Clinical translation limit

Desirudin is a yeast-expressed recombinant hirudin drug, FDA-approved for DVT prophylaxis after hip replacement. Its clinical evidence base applies only to the recombinant drug; it does NOT extend to claims about whole medicinal-leech therapy.

Molecular Profile

Category
Anticoagulant
Evidence tier
Tier A — FDA-approved derivative
Molecular weight
6,964 Da
Source species
Recombinant (Saccharomyces cerevisiae)
Discovered
1995 · Novartis (later Canyon Pharmaceuticals)
PDB structures
1HUT
Derived FDA-approved drug
Iprivask / Revasc (FDA approved April 2003)
Desirudin molecular structure

Biological Targets

  • thrombin (Factor IIa)

Key Citations

  1. Eriksson BI et al. (1997), N Engl J Med · PMID 9358126

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.