Pegunigalsidase alfa
Brand names: Elfabrio
Pegunigalsidase alfa is a pegylated recombinant human alpha-galactosidase A enzyme replacement therapy used for the long-term treatment of adults with Fabry disease.
Adult dose
Dose auto-extracted from US FDA prescribing information (openFDA / DailyMed) — cross-check; US labelling may differ from UK — not yet clinician-verified. Always confirm against the product SmPC and your local formulary before prescribing.
Contraindications
- None stated (US label §4: 'None')
Side effects
- Infusion-associated reactions
- Nasopharyngitis and sinusitis
- Headache
- Diarrhoea and nausea
- Fatigue
- Back pain and pain in extremity
- Hypersensitivity reactions including anaphylaxis (14% hypersensitivity, 3% anaphylaxis in clinical trials); membranoproliferative glomerulonephritis
Clinical monograph
How it works
It replaces deficient alpha-galactosidase A activity, hydrolysing accumulated globotriaosylceramide and related glycosphingolipids in affected tissues.
Prescribing in practice
- Hypersensitivity and infusion-associated reactions, including anaphylaxis, can occur; administer under appropriate supervision with resuscitation facilities available.
- It is given by intravenous infusion at regular intervals; refer to the SPC for administration and infusion-rate guidance.
- Anti-drug antibodies may develop and can affect tolerability, so reactions should be documented and managed accordingly.
Monitoring
Patients are monitored during and after infusions for hypersensitivity, with ongoing review of Fabry disease parameters and antibody status as clinically indicated.
Counselling the patient
- This treatment is given as a regular drip and is a long-term therapy for Fabry disease.
- Report any rash, breathing difficulty, flushing or feeling unwell during or after an infusion.
- Attend scheduled appointments so your condition and response can be reviewed.
Evidence & guidelines
Approval was based on clinical trials in Fabry disease evaluating efficacy and safety against established enzyme replacement comparators.
Reference: NICE HST evaluation; BIMDG (British Inherited Metabolic Disease Group) Fabry guidelines; SmPC; Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. The structured dose values shown have been reviewed by a clinician. Monograph status: clinician-reviewed (2026-07-04).
Related
Curated clinical cross-links plus same-class fallbacks.
- Weight-Based Levothyroxine Dose Calculator · Thyroid
- Cryoprecipitate Dose Calculator for Fibrinogen Replacement · Transfusion Medicine
- Free Water Deficit in Hypernatraemia · Fluid / Electrolytes
- Potassium Deficit Calculator · Electrolytes
- Indications for Renal Replacement Therapy (RRT) in AKI · Treatment Decision
- Sepsis Screening and Sepsis Six · UK Sepsis Trust; NICE NG51; Surviving Sepsis Campaign 2021
- Unintentional Weight Loss Workup · NICE NG12; BSG
- Chronic Fatigue Workup · NICE NG206; BMJ Best Practice
- Lymphadenopathy Workup · NICE NG12; BMJ Best Practice
- Pre-op Medical Clearance · NICE NG45; ESC 2022
- Secondary Hypertension Workup · NICE NG136; ESH 2023