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Recombinate (Antihemophilic Factor) - Summary

 
 



RECOMBINATE SUMMARY

RECOMBINATE [Antihemophilic Factor (Recombinant)] is a glycoprotein synthesized by a genetically engineered Chinese Hamster Ovary (CHO) cell line. In culture, the CHO cell line secretes recombinant Factor VIII (rFVIII) into the cell culture medium. The rFVIII is purified from the culture medium utilizing a series of chromatography columns. A key step in the purification process is an immunoaffinity chromatography methodology in which a purification matrix, prepared by immobilization of a monoclonal antibody directed to Factor VIII, is utilized to selectively isolate the rFVIII in the medium. The synthesized rFVIII produced by the CHO cells has the same biological effects as human Factor VIII. Structurally the protein has a similar combination of heterogenous heavy and light chains as found in human Factor VIII. RECOMBINATE is formulated as a sterile, nonpyrogenic, off-white to faint yellow, lyophilized powder preparation of concentrated recombinant Factor VIII for intravenous injection. RECOMBINATE is available in single-dose vials, which contain nominally 250, 500 and 1000 International Units per vial. When reconstituted with the appropriate volume of diluent, the product contains the following stabilizers in maximum amounts: For 10 mL reconstitution volume: 12.5 mg/mL Albumin (Human), 0.20 mg/mL calcium, 1.5 mg/mL polyethylene glycol (3350), 180 mEq/L sodium, 55 mM histidine, 1.5 µg/Factor VIII International Unit (IU) polysorbate-80. Recombinant Von Willebrand Factor (rVWF) is coexpressed with the rFVIII and helps to stabilize it. The final product contains not more than 2 ng rVWF/IU rFVIII, which will not have any clinically relevant effect in patients with von Willebrand’s disease. The product contains no preservative. Manufacturing of RECOMBINATE is shared by Baxter Healthcare Corporation and Wyeth BioPharma. The recombinant Antihemophilic Factor Concentrate (For Further Manufacturing Use), is produced by Baxter Healthcare Corporation and Wyeth BioPharma (For Further Manufacturing Use) and subsequently formulated and packaged at Baxter Healthcare Corporation. Each vial of RECOMBINATE is labeled with the Factor VIII activity expressed in IU per vial. Biological potency is determined by an in vitro assay which is referenced to the World Health Organization (WHO) International Standard for Factor VIII:C Concentrate.

The use of RECOMBINATE [Antihemophilic Factor (Recombinant)] is indicated in hemophilia A (classical hemophilia) for the prevention and control of hemorrhagic episodes.2 RECOMBINATE is also indicated in the perioperative management of patients with hemophilia A (classical hemophilia).

RECOMBINATE can be of therapeutic value in patients with acquired Factor VIII inhibitors not exceeding 10 Bethesda Units per mL.3  In clinical studies with RECOMBINATE, patients with inhibitors who were entered into the previously treated patient trial and those previously untreated children who have developed inhibitor activity on study, showed clinical hemostatic response when the titer of inhibitor was less than 10 Bethesda Units per mL. However, in such uses, the dosage of RECOMBINATE should be controlled by frequent laboratory determinations of circulating Factor VIII levels as well as the clinical status of the patient.

RECOMBINATE is not indicated in von Willebrand’s disease.


See all Recombinate indications & dosage >>

NEWS HIGHLIGHTS

Media Articles Related to Recombinate (Antihemophilic Factor)

Hemophilia therapies account for largest portion of pharmacy expenditures among publicly insured children with serious chronic illness
Source: Health Insurance / Medical Insurance News From Medical News Today [2015.07.28]
In an analysis of expenditures for outpatient pharmacy products used by publicly insured children with serious chronic illness in California, treating hemophilia accounted for about 40 percent of...

Report on treatment of patients with hemophilia published
Source: Blood / Hematology News From Medical News Today [2015.07.14]
In severe hemophilia A, prophylactic treatment is superior to on-demand treatment for some outcomesNumerous long-term randomized controlled trials (RCTs) have been conducted to investigate the...

more news >>

Published Studies Related to Recombinate (Antihemophilic Factor)

Sucrose formulated recombinant human antihemophilic factor VIII is safe and efficacious for treatment of hemophilia A in home therapy--International Kogenate-FS Study Group. [2000.06]
To add an increased level of safety to antihemophilic factor replacement therapy, a full-length, recombinant Factor VIII (rFVIII) product has been developed without human-derived plasma proteins during purification and formulation and using an additional solvent/detergent viral inactivation step...

Pharmacokinetic properties of recombinant factor VIII compared with a monoclonally purified concentrate (Hemofil M). The Recombinate Study Group. [1992.10.05]
A recombinant FVIII preparation, Recombinate, was compared with a high-purity plasma-derived concentrate, Hemofil M, in 47 hemophilia A patients in a cross-over evaluation of pharmacokinetic properties. The recombinant material showed a significantly lower clearance, volume of distribution, and higher in vivo recovery, but a similar half-life to the plasma-based product.

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Clinical Trials Related to Recombinate (Antihemophilic Factor)

Study to Establish Bioequivalence of ReFacto AF (BDDrFVIII) With Advate (FLrFVIII) in Hemophilia A [Completed]
The study will consist of two parts: a safety and efficacy period in which all subjects will participate and a pharmacokinetic analysis period, in which 30 eligible subjects will participate to compare ReFacto AF and Advate bioequivalency and safety and efficacy of ReFacto AF in patients with Hemophilia A.

Assessment of the Risk of Inhibitor Formation in Previously Treated Patients With Severe Hemophilia A [Terminated]
Most transient inhibitor formation, if any, will develop within the first 4 weeks. The study is to further monitor whether participants with severe Hemophilia A will develop inhibitors or antibodies at the later stage when switched from their current recombinant therapy produced from Chinese Hamster Ovary (CHO) cell line to Kogenate-FS raised in a Baby Hamster Kidney cell line.

Dose-Response Study of Recombinant Factor VIII Manufactured Protein-Free (rAHF-PFM) in Patients With Hemophilia A [Active, not recruiting]
The purpose of this study is to determine the effect of 3 doses of ADVATE rAHF-PFM on initial recovery (% increase [IU/dL] per IU/kg infused) and major single-infusion pharmacokinetic parameters. The 3 doses are 15, 30, and 50 IU/kg. Prior to each infusion, subjects will not have received treatment with a factor VIII concentrate for at least 3 days. Blood samples will be drawn within 30 minutes pre-infusion and at 0. 25, 0. 5, 1, 3, 6, 9, 24, 28, 32 and 48 hours post-infusion. A washout period of at least 3 days, but no more than 30 days between the last blood draw and the next infusion will be observed. During participation, subjects will maintain their preexisting treatment regimens with ADVATE rAHF-PFM or other factor VIII concentrate.

A secondary objective is to investigate the relationship between pharmacokinetic parameters at each dose level and the levels of von Willebrand factor ristocetin cofactor activity and von Willebrand factor antigen at baseline.

Study Evaluating Safety Of Patients Switching To ReFacto AF In Usual Care Settings [Recruiting]
The study will be investigating safety in patients who switch to ReFacto AF from ReFacto and other Factor VIII products.

Study Comparing Blood Levels of ReFacto and Advante in Hemophilia A [Completed]

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Reports of Suspected Recombinate (Antihemophilic Factor) Side Effects

Device Related Infection (4)Respiratory Distress (2)Gastrointestinal Haemorrhage (1)Drug Ineffective (1)Post Procedural Complication (1)Hepatic Failure (1)Factor Viii Inhibition (1)Gynaecomastia (1)Chest Pain (1)Chronic Hepatic Failure (1)more >>


Page last updated: 2015-07-28

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