May 25, 2017
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"The U.S. Food and Drug Administration today approved Vonvendi, von Willebrand factor (Recombinant), for use in adults 18 years of age and older who have von Willebrand disease (VWD). Vonvendi is the first FDA-approved recombinant von Willebrand f"...



[Antihemophilic Factor (Recombinant)] for Intravenous Administration


KOVALTRY, Antihemophilic Factor (Recombinant), is a sterile, non-pyrogenic, white to slightly yellow powder for reconstitution contained in a single-use vial. The final product does not contain any preservative. The reconstituted product is indicated for intravenous administration. The product is available in 250 IU, 500 IU, 1000 IU, 2000 IU, or 3000 IU nominal potencies; however, for each dosage strength the actual, assayed Factor VIII potency is directly printed on each vial label. The container closure system consists of a 10 mL, Type I glass vial sealed with a bromobutyl grey stopper and an aluminum crimp seal with plastic flip-off cap plus vial adapter. The vial adapter was designed to connect with the sterile water for injection (sWFI), prefilled diluent syringe. KOVALTRY is formulated with the following excipients: 2.2% glycine, 1% sucrose, 30 mM sodium chloride, 2.5 mM calcium chloride, 20 mM histidine and 80 ppm polysorbate 80. The pH of the reconstituted product is 6.6 to 7.0. Intravenous administration of sucrose contained in KOVALTRY will not affect blood glucose level.

The active substance in KOVALTRY is the unmodified full length recombinant Factor VIII glycoprotein comprising the human derived amino acid sequence. Post-translational modifications are similar to those of endogenous Factor VIII including glycosylation sites and sulfation of tyrosine sites. Manufacturing and quality controls ensure that both galactose-alpha-1,3-galactose (alpha-Gal) and N-glycolyl neuraminic acid (NGNA) content are below the 1% limit of detection established for each analytical method.

KOVALTRY is produced by a genetically engineered Baby Hamster Kidney (BHK) cell line into which the human Factor VIII gene was introduced together with the human heat shock protein 70 (HSP 70) gene. HSP 70 is an intracellular protein that improves proper folding of the Factor VIII protein. While KOVALTRY and Kogenate FS have the same protein backbone, human- and animal-derived raw materials are not added to the cell culture, purification, or formulation processes for KOVALTRY. In the manufacturing process for KOVALTRY, recombinant Factor VIII is secreted into cell culture medium and is purified from process- and product-related impurities using a series of chromatography and filtration steps. The production process incorporates two dedicated viral clearance steps: (1) a detergent treatment step for inactivation and (2) a 20 nanometer filtration step for removal of viruses and potential protein aggregates.

Last reviewed on RxList: 3/23/2016
This monograph has been modified to include the generic and brand name in many instances.

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