Cinryze

Cinryze

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Questions & Answers

Side Effects & Adverse Reactions

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Legal Issues

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FDA Safety Alerts

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Manufacturer Warnings

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FDA Labeling Changes

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Uses

CINRYZE is a C1 esterase inhibitor indicated for routine prophylaxis against angioedema attacks in adolescent and adult patients with Hereditary Angioedema (HAE).

History

There is currently no drug history available for this drug.

Other Information

CINRYZE (C1 esterase inhibitor [human]) (Freeze-Dried powder for Reconstitution) is a sterile, stable, lyophilized preparation of C1 esterase inhibitor derived from human plasma. CINRYZE is manufactured from human plasma purified by a combination of filtration and chromatographic procedures. The specific activity of CINRYZE is 4.0 – 9.0 units/mg protein. The purity is ≥ 90% human C1 esterase inhibitor. Following reconstitution with 5 mL of Sterile Water for Injection, USP, each vial contains approximately 500 units of functionally active C1 esterase inhibitor, pH 6.6 - 7.4, and an osmolality between 200 – 400 mosmol/kg. One Unit (U) of CINRYZE corresponds to the mean quantity of C1 esterase inhibitor present in 1 mL of normal fresh plasma.

CINRYZE, when reconstituted with 5 mL of Sterile Water for Injection, USP contains the following excipients: 4.1 mg/mL sodium chloride, 21 mg/mL sucrose, 2.6 mg/mL trisodium citrate, 2.0 mg/mL L-Valine, 1.2 mg/mL L-Alanine, and 4.5 mg/mL L-Threonine.

The following manufacturing steps are designed to reduce the risk of viral transmission:

  • Screening donors at U.S. licensed blood collection centers to rule out infection with Human Immunodeficiency Virus (HIV-1/HIV-2), Hepatitis B Virus, or Hepatitis C Virus.
  • Testing plasma pools by in-process NAT for parvovirus B19 via minipool testing and the limit of B19 in the manufacturing pool is set not to exceed 104 IU of B19 DNA per mL.
  • Use of two independent viral reduction steps in the manufacture of CINRYZE: pasteurization (heat treatment at 60°C for 10 hours in solution with stabilizers) and nanofiltration through two sequential 15 nm filters.

These viral reduction steps, along with a step in the manufacturing process, PEG precipitation, have been validated in a series of in vitro experiments for their capacity to inactivate/remove a wide range of viruses of diverse physicochemical characteristics including: Human Immunodeficiency Virus (HIV), Hepatitis A Virus (HAV), and the following model viruses: Bovine Viral Diarrhea Virus (BVDV) as a model virus for HCV, Canine Parvovirus (CPV) as a model virus for Parvovirus B19, Pseudorabies Virus (PRV) as a model virus for large enveloped DNA viruses (e.g. herpes virus). Total mean log10 reductions are shown in Table 4.

Table 4 Log10 Virus Reduction Factor for Selected Viruses
Process step Log10 Virus Reduction
Enveloped viruses Non-enveloped viruses
HIV BVDV PRV HAV CPV
PEG precipitation 5.1 ± 0.2 4.5 ± 0.3 6.0 ± 0.3 2.8 ± 0.2 4.2 ± 0.2
Pasteurization > 6.1 ± 0.2 > 6.7 ± 0.3 > 6.7 ± 0.2 2.8 ± 0.3 0.1 ± 0.3
Nanofiltration > 5.6 ± 0.2 > 5.5 ± 0.2 > 6.4 ± 0.3 > 4.9 ± 0.2 > 4.5 ± 0.3
    Total reduction     > 16.8     > 16.7     > 19.1     > 10.5     > 8.7

Cinryze Manufacturers


  • Viropharma Biologics
    Cinryze (Human C1-esterase Inhibitor) Injection, Powder, Lyophilized, For Solution [Viropharma Biologics]

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