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ELELYSO® Description (taliglucerase alfa)


Taliglucerase alfa is a hydrolytic lysosomal glucocerebroside-specific enzyme produced by recombinant DNA technology using plant cell culture (carrot). Taliglucerase alfa is a monomeric glycoprotein enzyme containing 4 N-linked glycosylation sites (kDa=60.8). Taliglucerase alfa differs from native human glucocerebrosidase by two amino acids at the N terminal and up to 7 amino acids at the C terminal. Taliglucerase alfa is a glycosylated protein with oligosaccharide chains at the glycosylation sites having terminal mannose sugars. These mannose-terminated oligosaccharide chains of taliglucerase alfa are specifically recognized by endocytic carbohydrate receptors on macrophages, the cells that accumulate lipid in Gaucher disease.

A unit is the amount of enzyme that catalyzes the hydrolysis of 1 micromole of the synthetic substrate para-nitrophenyl-β-D-glucopyranoside (pNP-Glc) per minute at 37 °C.

ELELYSO (taliglucerase alfa) for injection is supplied as a sterile, preservative-free, lyophilized powder for reconstitution and dilution prior to intravenous infusion. Each single-dose vial contains 200 units of taliglucerase alfa and D-mannitol (206.7 mg), polysorbate 80 (0.56 mg), and sodium citrate (30.4 mg). Citric acid may be added to adjust the pH at the time of manufacture. After reconstitution with 5.1 mL Sterile Water for Injection, USP, taliglucerase alfa concentration is 40 units/mL [see Dosage and Administration (2)]. Reconstituted solutions have a pH of approximately 6.0.

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