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(agalsidase beta) For intravenous infusion
Fabrazyme® (agalsidase beta) is a recombinant human α-galactosidase A enzyme with the same amino acid sequence as the native enzyme. Purified agalsidase beta is a homodimeric glycoprotein with a molecular weight of approximately 100 kD. The mature protein is comprised of two subunits of 398 amino acids (approximately 51 kD), each of which contains three N-linked glycosylation sites. α-galactosidase A catalyzes the hydrolysis of globotriaosylceramide (GL-3) and other α-galactyl-terminated neutral glycosphingolipids, such as galabiosylceramide and blood group B substances to ceramide dihexoside and galactose. The specific activity of Fabrazyme (agalsidase beta) is approximately 70 U/mg (one unit is defined as the amount of activity that results in the hydrolysis of 1 rjmoie of a synthetic substrate, p-nitrophenyl-α-D-galactopyranoside, per minute under the assay conditions).
Fabrazyme (agalsidase beta) is produced by recombinant DNA technology in a Chinese Hamster Ovary mammalian cell expression system.
Fabrazyme (agalsidase beta) is intended for intravenous infusion. It is supplied as a sterile, nonpyrogenic, white to off-white, lyophilized cake or powder for reconstitution with Sterile Water for Injection, uSp. Each 35 mg vial contains 37 mg of agalsidase beta as well as 222 mg mannitol, 20.4 mg sodium phosphate monobasic monohydrate, and 59.2 mg sodium phosphate dibasic heptahydrate. Following reconstitution as directed, 35 mg of agalsidase beta (7 mL) may be extracted from each 35 mg vial.
Each 5 mg vial contains 5.5 mg of agalsidase beta as well as 33.0 mg mannitol, 3.0 mg sodium phosphate monobasic monohydrate, and 8.8 mg sodium phosphate dibasic heptahydrate. Following reconstitution as directed, 5 mg of agalsidase beta (1 mL) may be extracted from each 5 mg vial.
What are the possible side effects of agalsidase beta (Fabrazyme)?
Symptoms of allergic or infusion reactions including difficulty breathing; closing of the throat; hives; rash; itching; fever; shaking; chest tightness; high or low blood pressure; fast heartbeats; muscle pain; stomach pain; nausea or vomiting; dizziness; numbness or tingling; and headache have occurred upon injection of agalsidase beta in many patients. Most patients treated with agalsidase beta develop antibodies to agalsidase beta and many will develop symptoms of an infusion reaction. A slow rate of injection of the medication and pretreatment with other medications may decrease...
Last reviewed on RxList: 2/26/2009
This monograph has been modified to include the generic and brand name in many instances.
Additional Fabrazyme Information
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