Elaprase
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Elaprase
ELAPRASE™
(idursulfase) Solution for intravenous infusion
WARNING
Risk of anaphylaxis.
Life-threatening anaphylactic reactions have been observed in some patients during ELAPRASE (idursulfase solution) infusions. Therefore, appropriate medical support should be readily available when ELAPRASE (idursulfase solution) is administered. Biphasic anaphylactic reactions have also been observed after ELAPRASE (idursulfase solution) administration and patients who have experienced anaphylactic reactions may require prolonged observation. Patients with compromised respiratory function or acute respiratory disease may be at risk of serious acute exacerbation of their respiratory compromise due to infusion reactions, and require additional monitoring.
DRUG DESCRIPTION
ELAPRASE is a formulation of idursulfase, a purified form of human iduronate-2-sulfatase, a lysosomal enzyme. Idursulfase is produced by recombinant DNA technology in a human cell line. Idursulfase is an enzyme that hydrolyzes the 2-sulfate esters of terminal iduronate sulfate residues from the glycosaminoglycans dermatan sulfate and heparan sulfate in the lysosomes of various cell types.
Idursulfase is a 525-amino acid glycoprotein with a molecular weight of approximately 76 kilodaltons. The enzyme contains eight asparagine-linked glycosylation sites occupied by complex oligosaccharide structures. The enzyme activity of idursulfase is dependent onthe post-translational modification of a specific cysteine to formylglycine. Idursulfase has a specific activity ranging from 41 to 77 U/mg of protein (one unit is defined as the amount of enzyme required to hydrolyze 1 µmole of heparin disaccharide substrate per hour under the specified assay conditions).
ELAPRASE (idursulfase solution) is intended for intravenous infusion and is supplied as a sterile, nonpyrogenic clear to slightly opalescent, colorless solution that must be diluted prior to administration in 0.9% Sodium Chloride Injection, USP. Each vial contains an extractable volume of 3.0 mL with an idursulfase concentration of 2.0 mg/mL at a pH of approximately 6, providing 6.0 mg idursulfase, 24.0 mg sodium chloride, 6.75 mg sodium phosphate monobasic monohydrate, 2.97 mg sodium phosphate dibasic heptahydrate, and 0.66 mg polysorbate 20. ELAPRASE (idursulfase solution) does not contain preservatives; vials are for single use only.
Last reviewed on RxList: 11/28/2007
This monograph has been modified to include the generic and brand name in many instances.
Additional Elaprase Information
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