SPL Set ID: 89092bb8-6a20-e23e-e053-2a95a90aa750

Filgrastim-txid, a leukocyte growth factor, is a 175 amino acid human granulocyte colony-stimulating factor (G-CSF) manufactured by recombinant DNA technology. Filgrastim-txid is produced by Escherichia coli ( E. coli ) bacteria into which has been inserted the human granulocyte colony-stimulating factor gene. Filgrastim-txid has a molecular weight of 18‚800 daltons. The protein has an amino acid sequence that is identical to the natural sequence predicted from human DNA sequence analysis‚ except for the addition of an N-terminal methionine necessary for expression in E. coli . Because filgrastim-txid is produced in E. coli ‚ the product is non-glycosylated and thus differs from G-CSF isolated from a human cell. NYPOZI (filgrastim-txid) injection is a sterile‚ clear‚ colorless to slightly yellowish‚ preservative-free liquid containing filgrastim-txid at a specific activity of 1.3 ± 0.3 × 10 8 IU/mg (as measured by a cell mitogenesis assay). The product is available in single-dose prefilled syringes for subcutaneous or intravenous use. The single-dose prefilled syringes contain either 300 mcg/0.5 mL or 480 mcg/0.8 mL of filgrastim-txid. The pH is 4.0. See table below for product composition of each single-dose prefilled syringe. 300 mcg/0.5 mL Syringe 480 mcg/0.8 mL Syringe filgrastim-txid 300 mcg 480 mcg glacial acetic acid 0.254 mg 0.41 mg polysorbate 80 0.062 mg 0.1 mg sodium acetate 0.02 mg 0.032 mg sorbitol 25 mg 40 mg water for Injection USP q.s. ad quantity sufficient to make 0.5 mL 0.8 mL