TheraRadar

Pharma Intelligence, Simplified

Data updated: Mar 10, 2026

ALDURAZYME

LARONIDASE
Approved 2003-04-30

ALDURAZYME (laronidase) is a hydrolytic lysosomal glycosaminoglycan-specific enzyme indicated for the treatment of adult and pediatric patients with Mucopolysaccharidosis I (MPS I). The therapy is approved for patients with the Hurler and Hurler-Scheie forms of the disease, as well as those with the Scheie form who exhibit moderate to severe symptoms. It is intended to provide exogenous enzyme replacement to address systemic manifestations of the disorder, though its impact on central nervous system symptoms has not been established. The safety and effectiveness of the drug have not been determined for mildly affected patients with the Scheie form.

Source: FDA Label • BIOMARIN • Hydrolytic Lysosomal Glycosaminoglycan-specific Enzyme

How ALDURAZYME Works

Mucopolysaccharidosis I is caused by a deficiency of the lysosomal enzyme α-L-iduronidase, which is required to break down glycosaminoglycans (GAG) such as dermatan sulfate and heparan sulfate. ALDURAZYME provides an exogenous version of this enzyme that is taken up into cellular lysosomes, likely through binding with mannose-6-phosphate receptors. Once inside the lysosome, the enzyme catalyzes the hydrolysis of accumulated GAG, thereby increasing their catabolism and reducing cellular and organ dysfunction. However, the enzyme is restricted from entering the central nervous system by the blood-brain barrier, limiting its activity to peripheral tissues.

Source: FDA Label
2
Indications
--
Phase 3 Trials
1
Priority Reviews
22
Years on Market

Details

Status
Prescription
First Approved
2003-04-30
Routes
N/A
Dosage Forms
VIAL

Companies

Active Ingredient: LARONIDASE

ALDURAZYME Approval History

Loading approval history...

What ALDURAZYME Treats

1 indications

ALDURAZYME is approved for 1 conditions since its original approval in 2003. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Mucopolysaccharidosis I
Source: FDA Label

ALDURAZYME Boxed Warning

HYPERSENSITIVITY REACTIONS INCLUDING ANAPHYLAXIS, and ACUTE RESPIRATORY COMPLICATIONS ASSOCIATED WITH ADMINISTRATION WARNING: HYPERSENSITIVITY REACTIONS INCLUDING ANAPHYLAXIS, and ACUTE RESPIRATORY COMPLICATIONS ASSOCIATED WITH ADMINISTRATION See full prescribing information for complete boxed warning . Appropriate medical monitoring and support measures, including cardiopulmonary resuscitation equipment, should be readily available. If a severe hypersensitivity reaction occurs, discontinue ALDU...

🔬

Active Pipeline

Pro

Ongoing clinical trials by development phase

Loading...

Key Completed Trials

Pro

Completed studies with published results, ranked by significance

Loading...
📊

Trial Timeline

Full development history with FDA approval milestones

Loading...
Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

ALDURAZYME FDA Label Details

Pro

Indications & Usage

FDA Label (PDF)

ALDURAZYME ® is indicated for the treatment of: adult and pediatric patients with Hurler and Hurler-Scheie forms of Mucopolysaccharidosis I (MPS I) and patients with the Scheie form of MPS I who have moderate to severe symptoms. ALDURAZYME is a hydrolytic lysosomal glycosaminoglycan (GAG)-specific enzyme indicated for the treatment of adult and pediatric patients with Hurler and Hurler-Scheie forms of Mucopolysaccharidosis I (MPS I) and for the treatment of patients with the Scheie form of MPS I who have moderate to severe symptoms. Limitations of Use: The risks and benefits of treating mildly...

⚠️ BOXED WARNING

WARNING: HYPERSENSITIVITY REACTIONS INCLUDING ANAPHYLAXIS, and ACUTE RESPIRATORY COMPLICATIONS ASSOCIATED WITH ADMINISTRATION WARNING: HYPERSENSITIVITY REACTIONS INCLUDING ANAPHYLAXIS, and ACUTE RESPIRATORY COMPLICATIONS ASSOCIATED WITH ADMINISTRATION See full prescribing information for complete bo...

Want competitive intelligence?

See who's developing similar drugs and track their progress

View Pipeline Dashboard

Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.