FIBRYGA is a human plasma-derived, sterile, purified, virus-inactivated and nanofiltered (20 nm) fibrinogen concentrate.
FIBRYGA is supplied as a lyophilized powder for reconstitution for intravenous injection. FIBRYGA contains no preservatives. Each bottle contains approximately 1 g of fibrinogen. The diluent for reconstitution of the lyophilized powder is sterile Water for Injection.
The nominal composition of FIBRYGA is as follows:
| Component | Quantity/ mL |
|---|
Human Fibrinogen | 20 mg |
Sodium Chloride | 6 mg |
Sodium Citrate Dihydrate | 1.5 mg |
Glycine | 10 mg |
L-Arginine Hydrochloride | 10 mg |
All units of human plasma used in the manufacture of FIBRYGA are provided by FDA-approved blood establishments, and are tested by FDA-licensed serological tests for Hepatitis B surface antigen (HBsAg), antibodies to Hepatitis C Virus (HCV) and Human Immunodeficiency Virus (HIV)-1/2. As an additional safety measure, the plasma is tested with Nucleic Acid Tests (NATs) for Hepatitis A Virus (HAV), Hepatitis B Virus (HBV), HCV and HIV-1 and found to be non-reactive (negative). The plasma is also screened for Human Parvovirus (B19V) by NAT. The limit for B19V DNA in the mini-pool is set not to exceed 10 3 IU/mL. Only plasma that passed virus screening is used for production.
The FIBRYGA manufacturing process includes a solvent/detergent (S/D) step for virus inactivation, and a nanofiltration step (Planova 20N nanofilter or Pegasus SV4 nanofilter) for virus removal. The mean cumulative virus reduction factors of these steps are summarized in Table 1 below.
Table 1: Cumulative Virus Reduction Factors (Log 10 ) During FIBRYGA Manufacture
PRV: Pseudorabies Virus, model for large enveloped DNA viruses
BVDV: Bovine Virus Diarrhea Virus, model for HCV
PPV: Porcine Parvovirus, model for B19V
n.a.: not applicable
* When the nanofiltration step was performed using a Pegasus SV4 nanofilter, the virus reduction factors for HIV-1, PRV, BVDV, HAV, and PPV were ( 3.9, ( 6.3, ( 5.0, ( 5.2, and 4.5, respectively. The cumulative virus reduction factors (S/D treatment + Pegasus SV4 nanofiltration) were ( 9.0, ( 12.9, ( 10.8, ( 5.2, and 4.5, respectively.