SPL Set ID: 6fb674bf-744e-431f-92ef-b2a5a66c8cf3

Pegunigalsidase alfa-iwxj, a hydrolytic lysosomal neutral glycosphingolipid-specific enzyme, is a PEGylated and crosslinked, chemically modified, recombinant human alpha-galactosidase A enzyme that is produced by genetically modified Bright Yellow 2 ( Nicotiana tabacum ) plant cells. The amino acid sequence of one subunit of pegunigalsidase alfa-iwxj consists of 405 amino acids, of which 398 amino acids are identical to human alpha-GAL-A with an additional 6 amino acids (SEKDEL) included at the C-terminal to encode an endoplasmic retrieval signal, and an additional glycine at the N-terminus derived from the signal peptide. Pegunigalsidase alfa-iwxj is a homodimeric glycoprotein covalently crosslinked with an average of nine 2.3 kDa PEG per dimer. The total molecular weight of the cross-linked dimer is approximately 116 kDa. Pegunigalsidase alfa-iwxj has specific activity of approximately 35-62 U/mg (one enzyme unit is defined as the amount of enzyme which catalyzes the hydrolysis of one micromole of synthetic substrate, p-nitrophenyl-α-D-galactopyranoside per minute at 37°C). ELFABRIO (pegunigalsidase alfa-iwxj) injection is a sterile, preservative-free, 20 mg/10 mL or 5 mg/2.5 mL (2 mg/mL) solution in a single-dose vial for intravenous infusion after dilution. Each mL contains 2 mg of pegunigalsidase alfa-iwxj, anhydrous citric acid (0.2 mg), sodium chloride (7.06 mg), sodium citrate (6.73 mg), and Water for Injection, USP. The pH is approximately 5.9 to 6.4.