Kogenate FS (Antihemophilic Factor (Recombinant))
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Kogenate FS (Antihemophilic Factor (Recombinant))

Kogenate FS
[Antihemophilic Factor (Recombinant) Formulated with Sucrose]

DRUG DESCRIPTION

Kogenate FS Antihemophilic Factor (Recombinant) is a coagulation factor VIII produced by recombinant DNA technology. It is produced by Baby Hamster Kidney (BHK) cells into which the human factor VIII gene has been introduced.8 The cell culture medium contains Human Plasma Protein Solution (HPPS) and recombinant insulin, but does not contain any proteins derived from animal sources. Kogenate FS is a purified glycoprotein consisting of multiple peptides including an 80 kD and various extensions of the 90 kD subunit. It has the same biological activity as factor VIII derived from human plasma. No human or animal proteins, such as albumin, are added during the purification and formulation processes of Kogenate FS.

The purification process includes a solvent/detergent virus inactivation step in addition to the use of the purification methods of ion exchange chromatography, monoclonal antibody immunoaffinity chromatography, along with other chromatographic steps designed to purify recombinant factor VIII and remove contaminating substances.

Additionally, the manufacturing process was investigated for its capacity to decrease the infectivity of an experimental agent of transmissible spongiform encephalopathy (TSE), considered as a model for the vCJD and CJD agents.9-21 Several of the individual production and raw material preparation steps in the Kogenate FS manufacturing process have been shown to decrease TSE infectivity of that experimental model agent. TSE reduction steps include the Fraction II+III separation step for HPPS (6.0 log10) and an anion exchange chromatography step (3.6 log10).

Kogenate FS is formulated with the following as stabilizers [see Table 7] in the final container and is then lyophilized. The final product is a sterile, nonpyrogenic, preservative-free, powder preparation for intravenous (IV) injection. Intravenous administration of sucrose contained in Kogenate FS will not affect blood glucose levels.

Table 7 : Stabilizers Contained in Kogenate FS Final Container

Stabilizer 250 IU, 500 IU, 1000IU 2000 IU. 3000 IU
Sucrose 0.9- 1.3% 0.9-1.2%
Glycine 21-25 mg/mL 20-24 mg/mL
Histidine 18-23 mmol/L 17-22 mmol/L

The following inactive ingredients/excipients are also contained in the final product:

Table 8 : Inactive Ingredients/Excipients

Inactive Ingredient/Excipient 250 IU, 500 IU, 1000 IU 2000 IU, 3000 IU
Sodium 27-36 mEq/L 26-34 mEq/L
Calcium 2.0-3.0 mmol/L 1.9-2.9 mmol/L
Chloride 32-40 mEq/L 31-38 mEq/L
Polysorbate 80 64-96 μg/mL 64-96 μg/mL
Sucrose 28 mg/vial 52 mg/vial
Imidazole. tri-n-butyl phosphate. and copper Trace amounts Trace amounts

Each vial of Kogenate FS contains the labeled amount of recombinant factor VIII in international units (IU). One IU, as defined by the World Health Organization standard for blood coagulation factor VIII, human, is approximately equal to the level of factor VIII activity found in 1 mL of fresh pooled human plasma.

REFERENCES

5. Manco-Johnson MJ, Abshire TC, Shapiro AD, Riske B, Hacker MR, Kilcoyne R, et al. Prophylaxis versus episodic treatment to prevent joint disease in boys with severe hemophilia. N Engl J Med 2007;357(6):535-44.

8. Lawn RM, Vehar GA: The molecular genetics of hemophilia. Sci Am 254(3):48–54, 1986.

9. Kimberlin RH, Walker CA: Characteristics of a short incubation model of scrapie in the golden hamster. J Gen Virol 34(2):295-304, 1977.

10. Kimberlin RH, Walker CA: Evidence that the transmission of one source of scrapie agent to hamsters involves separation of agent strains from a mixture. J Gen Virol 39(3):487-96, 1978.

11. Kimberlin RH, Walker CA: Pathogenesis of scrapie (strain 263K) in hamsters infected intracerebrally, intraperitoneally or intraocularly. J Gen Virol 67(2):255-63, 1986.

12. Prusiner SB, et al: Further purification and characterization of scrapie prions. Biochemistry 21(26):6942-50, 1982.

13. Kascsak RJ, et al: Mouse polyclonal and monoclonal antibody to scrapie-associated fibril proteins. J Virol 61(12):3688-93, 1987.

14. Rubenstein R, et al: Scrapie-infected spleens: analysis of infectivity, scrapie-associated fibrils, and protease-resistant proteins. J Infect Dis 164(1):29-35, 1991.

15. Taylor DM, Fernie K: Exposure to autoclaving or sodium hydroxide extends the dose-response curve of the 263K strain of scrapie agent in hamsters. J Gen Virol 77(4):811-13, 1996.

16. Stenland CJ, et al: Partitioning of human and sheep forms of the pathogenic prion protein during the purification of therapeutic proteins from human plasma. Transfusion 42(11):1497-500, 2002.

17. Lee DC, Miller JL, Petteway SR: Pathogen safety of manufacturing processes for biological products: special emphasis on KOGENATE® Bayer. Haemophilia 8(Suppl. 2):6-9, 2002.

18. Lee DC, Stenland CJ, Hartwell, RC, et al: Monitoring plasma processing steps with a sensitive Western blot assay for the detection of the prion protein. J Virol Methods 84(1):77-89, 2000.

19. Lee DC, Stenland CJ, Miller JL, et al: A direct relationship between the partitioning of the pathogenic prion protein and transmissible spongiform encephalopathy infectivity during the purification of plasma proteins. Transfusion 41(4):449-55, 2001.

20. Cai K, Miller JL, Stenland CJ, et al: Solvent-dependent precipitation of prion protein. Biochim Biophys Acta 1597(1):28-35, 2002.

21. Trejo SR, Hotta JA, Lebing W, et al: Evaluation of virus and prion reduction in a new intravenous immunoglobulin manufacturing process. Vox Sang 84(3):176-87, 2003.

What are the possible side effects of recombinant antihemophilic factor?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; feeling light-headed, fainting; swelling of your face, lips, tongue, or throat.

Stop using recombinant antihemophilic factor and call your doctor at once if you have a serious side effect such as:

  • chest pain;
  • easy bruising, increased bleeding episodes; or
  • bleeding from a wound or where the medicine was injected.

Less serious side effects may include:

  • sore throat, cough, runny nose;
  • fever or...

Read All Potential Side Effects and See Pictures of Kogenate FS »

What are the precautions when taking antihemophilic factor (recombinant) (Kogenate FS)?

Before using this medication, tell your doctor or pharmacist if you are allergic to any antihemophilic factor (factor VIII) products; or to animal proteins (e.g., mouse, hamster, cow); or if you have any other allergies. This product may contain inactive ingredients (such as natural rubber/latex found in the packaging of some brands), which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history.

Manufacturers of some brands of this medication recommend that you monitor your heartbeat during treatment. If your heart starts to beat faster, it is recommended that you give this medication more slowly or temporarily stop the infusion until your heart rate returns...

Read All Potential Precautions of Kogenate FS »

Last reviewed on RxList: 6/11/2012
This monograph has been modified to include the generic and brand name in many instances.

INDICATIONS

Control and Prevention of Bleeding Episodes

Kogenate® FS is an antihemophilic factor that is indicated for the control and prevention of bleeding episodes in adults and children (0-16 years) with hemophilia A.

Peri-operative Management

Kogenate FS is indicated for surgical prophylaxis in adults and children with hemophilia A.

Routine Prophylaxis in Children with Hemophilia A with No Pre-existing Joint Damage

Kogenate FS is indicated for routine prophylactic treatment to reduce the frequency of bleeding episodes and the risk of joint damage in children with no pre-existing joint damage.

Kogenate FS is not indicated for the treatment of von Willebrand's disease.

DOSAGE AND ADMINISTRATION

For Intravenous Use After Reconstitution

  • Treatment with Kogenate FS should be initiated under the supervision of a physician experienced in the treatment of hemophilia A.
  • Each vial of Kogenate FS has the recombinant factor VIII (rFVIII) potency in international units stated on the label.
  • Dosage and duration of treatment depend on the severity of the factor VIII deficiency, the location and extent of bleeding, and the patient's clinical condition.1 Careful control of replacement therapy is especially important in cases of major surgery or life-threatening bleeding episodes. [See Table 1 and Table 2.]

The expected in vivo peak increase in factor VIII level expressed as IU/dL (or % normal) can be estimated using the following formulas:

Dosage (units) = body weight (kg) x desired factor VIII rise (IU/dL or % of normal) x 0.5 (IU/kg per IU/dL)

OR

IU/dL (or % normal)=Total Dose (IU)/body weight (kg) x 2 [IU/dL]/[IU/kg]

Examples (assuming patient's baseline factor VIII level is < 1% of normal):

  1. A dose of 1750 IU Kogenate FS administered to a 70 kg patient should be expected to result in a peak post-infusion factor VIII increase of 1750 IU x {[2 IU/dL]/[IU/kg]}/[70 kg] = 50 IU/dL (50% of normal).
  2. A peak level of 50% is required in a 15 kg child. In this situation, the appropriate dose would be: 50 IU/dL/{[2 IU/dL]/[IU/kg]} x 15 kg = 375 IU.

Doses administered should be titrated to the patient's clinical response. Patients may vary in their pharmacokinetic (e.g., half-life, in vivo recovery) and clinical responses to Kogenate FS.2,3,4 Although the dose can be estimated by the calculations above, it is highly recommended that, whenever possible, appropriate laboratory tests including serial factor VIII activity assays be performed. [See WARNINGS AND PRECAUTIONS and CLINICAL PHARMACOLOGY.]

Control and Prevention of Bleeding Episodes

The careful control of treatment dose is especially important in cases of life-threatening bleeding episodes or major surgery.

The following table can be used to guide dosing in bleeding episodes:

Table 1 : Control and Prevention of Bleeding Episodes for Children and Adults

Type of Bleeding Episode Factor VIII Level Required (IU/dL or % of normal) Dosage and Frequency Necessary to Maintain the Therapeutic Plasma Level
Minor
Early hemarthrosis, minor muscle or oral bleeds.
20-40 10-20 IU per kg Repeat dose if there is evidence of further bleeding.
Moderate
Bleeding into muscles, bleeding into the oral cavity, definite hemarthroses, and known trauma.
30-60 15-30 IU per kg Repeat dose every 12-24 hours until bleeding is resolved.
Major
Gastrointestinal bleeding. Intracranial, intra-abdominal or intrathoracic bleeding, central nervous system bleeding, bleeding in the retropharyngeal or retroperitoneal spaces, or iliopsoas sheath. Fractures. Head trauma.
80-100 Initial dose 40-50 IU per kg Repeat dose 20-25 IU per kg every 8-12 hours until bleeding is resolved.

Peri-operative Management

The careful control of treatment dose is especially important in cases of major surgery or life-threatening bleeding episodes.

The following table can be used to guide dosing in surgery:

Table 2 : Peri-operative Management for Adults and Children

Type of Surgery Factor VIII Level Required (IU/dL or % of normal) Dosage and Frequency Necessary to Maintain the Therapeutic Plasma Level
Minor Including tooth extraction 30-60 15-30 IU per kg Repeat dose every 12-24 hours until bleeding is resolved.
Major Examples include tonsillectomy, inguinal herniotomy, synovectomy, total knee replacement, craniotomy, osteosynthesis, trauma. 100 Pre-operative dose 50 IU per kg Verify 100% activity prior to surgery. Repeat as necessary after 6 to 12 hours initially, and for 10 to 14 days until healing is complete.

Routine Prophylaxis in Children with No Pre-existing Joint Damage

The recommended dose for routine prophylaxis is 25 IU/kg of body weight every other day.5

Instructions for Use

Kogenate FS is administered by intravenous (IV) injection after reconstitution. Patients should follow the specific reconstitution and administration procedures provided by their physicians.

For instructions, patients should follow the recommendations in the FDA-Approved Patient Labeling. [See FDA-Approved Patient Labeling]

Reconstitution, product administration, and handling of the administration set and needles must be done with caution. Percutaneous puncture with a needle contaminated with blood can transmit infectious viruses including HIV (AIDS) and hepatitis. Obtain immediate medical attention if injury occurs. Place needles in a sharps container after single use. Discard all equipment, including any reconstituted Kogenate FS product, in an appropriate container.

Preparation and Reconstitution

The procedures below are provided as general guidelines for the reconstitution and administration of Kogenate FS.

Always work on a clean surface and wash hands before performing the following procedures.

Vacuum Transfer and Reconstitution
  1. Warm the unopened diluent and the concentrate to a temperature not to exceed 37°C or 99°F.
  2. After removing the plastic flip-top caps (Fig. A), aseptically cleanse the rubber stoppers of both vials with alcohol, being careful not to handle the rubber stopper.
  3. Remove the protective cover from one end of the plastic transfer needle cartridge and penetrate the stopper of the diluent vial (Fig. B).
  4. Remove the remaining portion of the protective cover, invert the diluent vial and penetrate the rubber seal on the concentrate vial (Fig. C) with the needle at an angle.
  5. The vacuum will draw the diluent into the concentrate vial. Hold the diluent vial at an angle to the concentrate vial in order to direct the jet of diluent against the wall of the concentrate vial (Fig. C). Avoid excessive foaming. If the diluent does not get drawn into the vial, there is insufficient vacuum and the product should not be used.
  6. After removing the diluent vial and transfer needle (Fig. D), swirl until completely dissolved without creating excessive foaming (Fig. E).
  7. Re-swab top of reconstituted Kogenate FS vial with alcohol. Allow the stopper to air dry.
  8. After the concentrate powder is completely dissolved, withdraw the solution into the syringe through the filter needle that is supplied in the package (Fig. F). Replace the filter needle with the administration set provided and inject intravenously. NOTE: See accompanying instructions for Infusion Set with Filter.
  9. If the same patient is to receive more than one vial, the contents of two vials may be drawn into the same syringe through a separate unused filter needle before attaching the vein needle.
  10. Kogenate FS should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.

Vacuum Transfer and Reconstitution - Illustration

Administration

For Intravenous Use Only After Reconstitution
  • Kogenate FS should be inspected visually for particulate matter and discoloration prior to administration, wherever solution and container permit. Turbid or discolored solution should be discarded.
  • Reconstituted Kogenate FS may be stored at room temperature prior to administration, but is to be administered within 3 hours. It is recommended to use the IV administration set provided.
  • A dose of Kogenate FS may be administered over a period of 1 to 15 minutes. The rate of administration however, should be adapted to the response of each individual patient. The pulse rate should be determined before and during administration of Kogenate FS. If there is a significant increase in pulse rate, reducing the rate of administration or temporarily halting the injection allows the symptoms to disappear promptly.

HOW SUPPLIED

Dosage Forms And Strengths

Kogenate FS is available as a lyophilized powder in single use glass vials containing 250, 500, 1000, 2000, and 3000 International Units (IU).

Each vial of Kogenate FS is labeled with the recombinant antihemophilic factor activity expressed in IU per vial. This potency assignment employs a factor VIII concentrate standard that is referenced to a WHO International Standard for factor VIII concentrates, and is evaluated by appropriate methodology to ensure accuracy of the results.

Kogenate FS is available as a kit in the following single use glass vial sizes. A suitable volume of Sterile Water for

Injection, USP, a double-ended transfer needle, a filter needle, and an administration set are provided in the kit.

NDC Number Approximate FVIII Activity (IU) Diluent (mL)
0026-3782-20 250 2.5
0026-3783-30 500 2.5
0026-3785-50 1000 2.5
0026-3786-60 2000 5.0
0026-3787-70 3000 5.0

Actual factor VIII activity in IU is stated on the label of each Kogenate FS Vial.

Storage and Handling

Product as Packaged for Sale:
  • Store Kogenate FS at +2°C to +8°C (36°F to 46°F) for up to 30 months from the date of manufacture. Within this period, Kogenate FS may be stored for a period of up to 12 months at temperatures up to +25°C or 77°F, such as in home treatment situations.
  • The starting date of room temperature storage should be clearly recorded on the unopened product carton. Once stored at room temperature, the product must not be returned to the refrigerator. The shelf-life then expires after the storage at room temperature, or the expiration date on the product vial, whichever is earlier.
  • Do not use Kogenate FS after the expiration date indicated on the vial.
  • Do not freeze.
  • Protect from extreme exposure to light and store the lyophilized powder in the carton prior to use.
Product After Reconstitution
  • Administer Kogenate FS within 3 hours after reconstitution.
  • It is recommended to use the administration set provided.

REFERENCES

1. White GC, Rosendaal F, Aledort LM, Lusher JM, Rothschild C, Ingerslev J, for the Factor VIII and Factor IX Subcommittee of the Scientific and Standardization Committee of the International Society on Thrombosis and Haemostasis. Definitions in hemophilia. Thromb Haemost 85:560-75, 2001.

2. Abildgaard CF, Simone JV, Corrigan JJ, et al: Treatment of hemophilia with glycine-precipitated Factor VIII. N Engl J Med 275(9):471–5, 1966.

3. Schwartz RS, Abildgaard CF, Aledort LM, et al: Human recombinant DNA-derived antihemophilic factor (factor VIII) in the treatment of hemophilia A. Recombinant Factor VIII Study Group. N Engl J Med 323(26):1800-5, 1990.

4. White GC 2nd, Courter S, Bray GL, et al: A multicenter study of recombinant factor VIII (Recombinate) in previously treated patients with hemophilia A. The Recombinate Previously Treated Patient Study Group.Thromb Haemost 77(4):660-667, 1997.

5. Manco-Johnson MJ, Abshire TC, Shapiro AD, Riske B, Hacker MR, Kilcoyne R, et al. Prophylaxis versus episodic treatment to prevent joint disease in boys with severe hemophilia. N Engl J Med 2007;357(6):535-44.

Kogenate FS Customer Service 1-888-606-3780. Bayer Reimbursement HELPline 1-800-288-8374. For more information, visit www.kogenatefs.com. Bayer HealthCare LLC Tarrytown, NY 10591 USA

Last reviewed on RxList: 6/11/2012
This monograph has been modified to include the generic and brand name in many instances.

SIDE EFFECTS

The most serious adverse reactions are systemic hypersensitivity reactions including bronchospastic reactions and/or hypotension and anaphylaxis and the development of high-titer inhibitors necessitating alternative treatments to AHF.

The most common adverse reactions observed in clinical trials (frequency ≥ 4% of patients) are inhibitor formation in previously untreated patients (PUPs) and minimally treated patients (MTPs), skin-related hypersensitivity reactions (e.g., rash, pruritus), infusion site reactions (e.g., inflammation, pain), and central venous access device (CVAD) line-associated infections in patients requiring a CVAD for intravenous administration.

Clinical Trials Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in clinical trials of another drug and may not reflect the rates observed in clinical practice.

Previously Treated Patients (PTPs)

During the clinical studies conducted in PTPs, 451 adverse events (irrespective of the relationship to the study drug) were reported in the course of 24,936 infusions (1.8%). Twenty-four of the 451 adverse events were assessed as related to Kogenate FS (0.1%).

Adverse reactions reported by ≥ 4% of the patients are listed in Table 3 below.

Table 3 : Adverse Reactions (AR) in Previously Treated Patients (PTPs) with Frequency of ≥ 4%

MedDRA Primary SOC Preferred Term Total No. of Patients: 73 No. of Patients with AR (%) Total No. of Infusions: 24,936 AR per Infusion (%)
Skin and Subcutaneous Tissue Disorders Rash, pruritus 6 (8.2%) 0.02
General Disorders and Administration Site Conditions Infusion site reactions 3 (4.1%) 0.01

Previously Untreated Patients (PUPs) and Minimally Treated Patients (MTPs)

In clinical studies with pediatric PUPs and MTPs, 726 adverse events were reported in the course of 9,389 infusions (7.7%). Twenty-nine of the 726 adverse events were assessed as related to Kogenate FS (0.3%).

Adverse reactions reported by ≥ 4% of the patients are listed in Table 4 below.

Table 4 : Adverse Reactions (AR) in Previously Untreated Patients (PUPs) and Minimally Treated Patients (MTPs) with Frequency of ≥ 4% (Age Range 2-27 months)

MedDRA Primary SOC Preferred Term Total No. of patients: 61 No. of Patients with AR (%) Total No. of Infusions: 9,389 AR per Infusion (%)
Skin and Subcutaneous Tissue Disorders Rash, pruritus, urticaria 10 (16.4) 0.01
Blood and Lymphatic System Disorders Factor VIII inhibition 9 (15)a N/A
General Disorders and Administration Site Conditions Infusion site reactions 4 (6.6) 0.04
a *Denominator for de-novo inhibitors is N=60, since one patient had a pre-existing inhibitor.

Minimally Treated Patients (MTPs) in the Joint Outcome Study

In the Joint Outcome Study with pediatric MTPs treated with routine prophylaxis or episodic enhanced treatment for 5.5 years, 46 of the 65 randomized patients experienced adverse events over the study duration. Adverse events were not assessed for their relationship with Kogenate FS.

Table 5 : Adverse Events (AE) in MTPs in the Joint Outcome Study (Age Range 0-6 years)

MedDRA Primary SOC Preferred Term Total No. of Prophylaxis Arm Patients: 32 No. of Patients with AE (%) Total No. of Enhanced Episodic Arm Patients: 33 No. of Patients with AE (%)
Surgical and Medical Procedures Central venous catheterization. Catheter removal 19 (59) 18a (55)
Infections and Infestations Central line infection 6 (19) 6 (18)
General Disorders and Administration Site Conditions Pyrexia 1 (3) 4 (12)
a Three patients from the enhanced episodic arm had catheter removal.

Immunogenicity

In clinical studies with 73 PTPs (defined as having more than 100 exposure days), one patient had a pre-existing inhibitor. In the other 72 patients, followed over 4 years, no de-novo inhibitors were observed.

In clinical studies with pediatric PUPs and MTPs, inhibitor development was observed in 9 out of 60 patients (15%), 6 were high titer1 ( > 5BU) and 3 were low-titer inhibitors. Inhibitors were detected at a median number of 7 exposure days (range 2 to 16 exposure days).

In the Joint Outcome Study with Kogenate FS,5 de-novo inhibitor development was observed in 8 of 64 patients with negative baseline values (12.5%), 2 patients developed high titer1 ( > 5 BU) and were withdrawn from the study. Six patients developed low-titer inhibitors. Inhibitors were detected at a median number of 44 exposure days (range 5 to 151 exposure days).

Post-Marketing Experience

The following adverse reactions have been identified during post approval use of Kogenate FS. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

Among patients treated with Kogenate FS, cases of serious allergic/hypersensitivity reactions (which may include facial swelling, flushing, hives, blood pressure decrease, nausea, rash, restlessness, shortness of breath, tachycardia, tightness of the chest, tingling, urticaria, vomiting) have been reported, particularly in very young patients or patients who have previously reacted to other factor VIII concentrates.

The following table represents the post-marketing adverse reactions as MedDRA Preferred Terms.

Table 6 : Post-Marketing Experience

MedDRA Primary SOC Preferred Term
Blood and Lymphatic System Disorders FVIII inhibition
Skin and Subcutaneous Tissue Disorders Pruritus. urticaria. rash
General Disorders and Administration Site Conditions Infusion site reaction
Pyrexia
Immune System Disorders Anaphylactic reaction. other hypersensitivity reactions
SOC = System Organ Class  

Read the Kogenate FS (antihemophilic factor (recombinant)) Side Effects Center for a complete guide to possible side effects »

DRUG INTERACTIONS

None known.

Last reviewed on RxList: 6/11/2012
This monograph has been modified to include the generic and brand name in many instances.

WARNINGS

Included as part of the PRECAUTIONS section.

PRECAUTIONS

General

The clinical response to Kogenate FS may vary. If bleeding is not controlled with the recommended dose, the plasma level of factor VIII should be determined and a sufficient dose of Kogenate FS should be administered to achieve a satisfactory clinical response. If the patient's plasma factor VIII level fails to increase as expected or if bleeding is not controlled after the expected dose, the presence of an inhibitor (neutralizing antibodies) should be suspected and appropriate testing performed.

Anaphylaxis and Severe Hypersensitivity Reactions

Allergic-type hypersensitivity reactions including anaphylaxis have been reported with Kogenate FS and have manifested as pruritus, rash, urticaria, hives, facial swelling, dizziness, hypotension, nausea, chest discomfort, cough, dyspnea, wheezing, flushing, discomfort (generalized) and fatigue. Discontinue Kogenate FS if symptoms occur and seek immediate emergency treatment.

Kogenate FS contains trace amounts of mouse immunoglobulin G (MuIgG) and hamster (BHK) proteins. Patients treated with this product may develop hypersensitivity to these non-human mammalian proteins.

Neutralizing Antibodies

Patients treated with antihemophilic factor (AHF) products should be carefully monitored for the development of factor VIII inhibitors by appropriate clinical observations and laboratory tests.6 Inhibitors have been reported following administration of Kogenate FS predominantly in previously untreated patients. If expected plasma factor VIII activity levels are not attained, or if bleeding is not controlled with an expected dose, an assay that measures factor VIII inhibitor concentration should be performed.

Monitoring Laboratory Tests

  • Monitor plasma factor VIII activity levels by the one-stage clotting assay to confirm the adequate factor VIII levels have been achieved and maintained, when clinically indicated. [See DOSAGE AND ADMINISTRATION]
  • Monitor for development of factor VIII inhibitors. Perform assay to determine if factor VIII inhibitor is present. If expected factor VIII activity plasma levels are not attained, or if bleeding is not controlled with the expected dose of Kogenate FS. Use Bethesda Units (BU) to titer inhibitors.
    • If the inhibitor is less than 10 BU per mL, the administration of additional Kogenate FS concentrate may neutralize the inhibitor, and may permit an appropriate hemostatic response.

Adequate hemostasis may not be achieved if inhibitor titers are above 10 BU per mL. The inhibitor titer may rise following Kogenate FS infusion as a result of an anamnestic response to factor VIII. The treatment or prevention of bleeding in such patients requires the use of alternative therapeutic approaches and agents.

Patient Counseling Information

See Patient Product Information and Instructions for Use

Advise patients to report any adverse reactions or problems following Kogenate FS administration to their physician or healthcare provider.

  • Allergic-type hypersensitivity reactions have been reported with Kogenate FS. Warn patients of the early signs of hypersensitivity reactions [including hives (rash with itching), generalized urticaria, tightness of the chest, wheezing, hypotension] and anaphylaxis. Advise patients to discontinue use of the product if these symptoms occur and seek immediate emergency treatment with resuscitative measures such as the administration of epinephrine and oxygen.
  • In clinical studies with Kogenate FS, a 15% incidence of inhibitor development was observed in PUPs/MTPs and zero de-novo inhibitors were observed with the PTPs. Inhibitor formation may occur at any time in the treatment of a patient with hemophilia A. Advise patients to contact their physician or treatment center for further treatment and/or assessment, if they experience a lack of clinical response to factor VIII replacement therapy, as this may be a manifestation of an inhibitor.
  • Advise patients to consult with their healthcare provider prior to travel. While traveling advise patients to bring an adequate supply of Kogenate FS based on their current regimen of treatment.

Nonclinical Toxicology

Preclinical studies evaluating Kogenate FS in hemophilia A with mice, rats, rabbits, and dogs demonstrated safe and effective restoration of hemostasis. Doses several fold higher than the recommended clinical dose (related to body weight) did not demonstrate any acute or subacute toxic effect for Kogenate FS in laboratory animals.

Carcinogenesis, Mutagenesis, Impairment of Fertility

No studies have been conducted with Kogenate FS to assess its mutagenic or carcinogenic potential and impairment of fertility. Kogenate FS has been shown to be comparable to the predecessor product with respect to its biochemical and physiochemical properties, as well as its non-clinical in vivo pharmacology and toxicology. By inference, the predecessor product and Kogenate FS would be expected to have equivalent mutagenic and carcinogenic potential.

The predecessor product did not demonstrate reverse mutation or chromosomal aberrations at doses substantially greater than the maximum expected clinical dose. In vivo evaluation with the predecessor product in animals using doses ranging between 10 and 40 times the expected clinical maximum also indicated that the predecessor product did not possess a mutagenic potential. Long-term investigations of carcinogenic potential in animals have not been performed due to the immune response to heterologous proteins in all non-human mammalian species.

Use In Specific Populations

Pregnancy

Pregnancy Category C

Animal reproduction studies have not been conducted with Kogenate FS. It is also not known whether Kogenate FS can cause fetal harm when administered to a pregnant woman or affect reproduction capacity. Kogenate FS should be used during pregnancy only if clinically needed.

Labor and Delivery

There is no information available on the effect of factor VIII replacement therapy on labor and delivery. Kogenate FS should be used only if clinically needed.

Nursing Mothers

It is not known whether this drug is excreted into human milk. Because many drugs are excreted into human milk, caution should be exercised if Kogenate FS is administered to nursing mothers. Kogenate FS should be given to nursing mothers only if clinically needed.

Pediatric Use

Safety and efficacy studies have been performed in previously untreated and minimally treated pediatric patients. Children in comparison to adults present higher factor VIII clearance values and thus lower recovery of factor VIII. This may be explained by differences in body composition7 and should be taken into account when dosing or following factor VIII levels in such a population. [See CLINICAL PHARMACOLOGY] Routine prophylactic treatment in children ages 0-2.5 years with no pre-existing joint damage has been shown to reduce spontaneous joint bleeding and the risk of joint damage. This data can be extrapolated to ages > 2.5-16 years for children who have no existing joint damage. [See Clinical Studies]

Geriatric Use

Clinical studies with Kogenate FS did not include patients aged 65 and over. Dose selection for an elderly patient should be individualized.

REFERENCES

6. Kasper CK: Complications of hemophilia A treatment: factor VIII inhibitors. Ann NY Acad Sci 614:97-105, 1991.

Last reviewed on RxList: 10/26/2005
This monograph has been modified to include the generic and brand name in many instances.

OVERDOSE

No information provided.

CONTRAINDICATIONS

Kogenate FS is contraindicated in patients who have manifested life-threatening immediate hypersensitivity reactions, including anaphylaxis, to the product or its components, including mouse or hamster proteins.

Last reviewed on RxList: 6/11/2012
This monograph has been modified to include the generic and brand name in many instances.

CLINICAL PHARMACOLOGY

Mechanism of Action

Kogenate FS temporarily replaces the missing clotting factor VIII that is needed for effective hemostasis.

Pharmacodynamics

The aPTT is prolonged in patients with hemophilia. Determination of activated partial thromboplastin time (aPTT) is a conventional in vitro assay for biological activity of factor VIII. Treatment with Kogenate FS normalizes the aPTT over the effective dosing period.

Pharmacokinetics

The pharmacokinetic properties of Kogenate FS were investigated in two separate studies in previously treated patients, adults and children.

Pharmacokinetic studies with Kogenate FS were conducted in 20 PTPs (ages 12 to 33 years) with severe hemophilia A in North America. The pharmacokinetic parameters for Kogenate FS were measured in a randomized, crossover clinical trial with the predecessor KOGENATE product with a single dose administration of 50 IU/kg. After 24 weeks, the same dose of Kogenate FS was administered to the same patients. The recovery and half-life data for Kogenate FS were unchanged after 24 weeks of continued treatment with sustained efficacy and no evidence of factor VIII inhibition. [See Table 9.]

Table 9 : Pharmacokinetic Parameters for Kogenate FS Compared to KOGENATE

Parameter Kogenate FS KOGENATE
Initial PK Mean (±SD) PK at week 24 Mean (±SD) Reference Mean (±SD)
AUC (IU •h/dL) 1588.05 ± 344.32 1487.08 ± 381.73 1879.02 ± 412.32
Cmax (IU/dL) 114.95 ± 20.19 109.42 ± 20.09 127.40 ± 33.21
Half-life (hr) 13.74 ± 1.82 14.60 ± 4.38 14.07 ± 2.62
In Vivo Recovery (IU/dL / IU/kg) 2.20 ± 0.34 2.11 ± 0.37 2.43 ± 0.60

The pharmacokinetics of Kogenate FS were investigated in pediatric PTPs (4.4-18.1 years of age, average age 12).7 The pharmacokinetic parameters in children compared to adults show differences in higher clearance, lower incremental in vivo factor VIII recovery and a shorter factor VIII half-life. This might be explained by differences in body composition such as body surface area and plasma volume. The pharmacokinetic parameters are depicted in Table 10.

Table 10 : Pharmacokinetic Parameters for Kogenate FS in Children

Parameter Mean (range)
AUC (IU•h/dL) 1320.0
Clearance (mL/h•kg) 4.1
Half-life (hr) 10.7 (7.8-15.3)
In Vivo Recovery (IU/dL /IU/kg) 1.9 (1.25-2.76)

Clinical Studies

Previously Treated Patients

A total of 73 patients with severe ( ≤ 2% FVIII) hemophilia A, ages 12–59, who had been previously treated with other recombinant or with plasma-derived AHF products, were treated up to 54-months in open label studies with Kogenate FS in Europe and North America. A total of 5,684 bleeding episodes were treated during the studies. Patients could be treated on demand or on prophylaxis. Regularly scheduled prophylaxis treatment represented 76% of all infusions (treatment regimens of 2-3 infusions per week). [See Table 11.]

Table 11 : Previously Treated Patients (PTPs) Clinical Trial Results

Clinical Parameters Results
No. of Infusions of Kogenate FS Administered 24.924
No. of IU Administered 45 million IU
No. of Bleeds Treated with Kogenate FS 5.684
Percentage of Bleeds Treated with One or Two Infusions of Kogenate FS one infusion: 79.7%. two infusions: 13.0% total: 92.7%
Mean Kogenate FS Dose per Treatment Infusion (in Europe and North America, Respectively) Approximately 32.5 and 29.6 IU/kg per treatment infusion

A total of 31 patients received Kogenate FS for 43 surgical procedures during the PTP studies. There were both minor and major surgery types, 27 and 16 respectively. The surgeon or treating physician assigned a rating to the hemostatic outcome according to 4 categories; “excellent”, “good,” “moderate,” or “none.” Hemostasis was rated as satisfactory (“excellent” or “good”) in all cases. [See Table 13.]

Previously Untreated and Minimally Treated Patients

Kogenate FS has been used in the treatment of bleeding episodes in pediatric previously untreated patients (PUPs) and minimally treated patients (MTPs) with severe ( < 2% FVIII) hemophilia A. There were 37 PUPs and 24 MTPs (defined as having equal to or less than 4 exposure days) treated with a total of 9,419 infusions of Kogenate FS for a follow up duration up to 3.1 years. A total of 1047 bleeding episodes were treated.

Table 12 : Previously Untreated and Minimally Treated Patients (PUPs and MTPs) Clinical Trial Results

Clinical Parameters Results
No. of Infusions of Kogenate FS Administered 9.419
No. of Exposure Days to Kogenate FS (median) 115 exposure days
No. of IU Administered 7.5 million IU
No. of Bleeds Treated with Kogenate FS 1.047
Percentage of Bleeds Treated with One or Two Infusions of Kogenate FS one infusion 73.1% two infusions 15.0% total: 88.1%

A total of 29 surgical procedures were performed in 23 patients during the PUPs and MTPs study. There were both minor and major surgery types, 23 and 6 respectively. The surgeon or treating physician assigned a rating to the hemostatic outcome according to 4 categories; “excellent,” “good,” “moderate,” or “none.” Hemostasis was rated as satisfactory (“excellent” or “good”) in all cases. [See Table 13.]

Table 13 : Surgical Procedures Performed During PTPs and PUPs/MTPs Clinical Trials

Type of Surgery PTPs
(N=31)
PUPs/MTPs
(N=23)
No. of Surgical Events Outcome “Good” or “Excellent” No. of Surgical Events Outcome “Good” or “Excellent”
Minor Surgery (i.e., tooth extractions, catheter implantations, liver biopsies) 24 100% 21 100%
Major Surgery (i.e., joint replacements, craniotomies, gastrointestinal resection) 16 100% 6 100%
Total 43 29

Pediatric Prophylaxis and Joint Damage Risk Reduction

A total of 65 boys less than 30 months of age with severe hemophilia A (FVIII level ≤ 2 IU/dL) and with ≤ 2 bleeds into each index joint and normal baseline joint imaging, were observed for up to 5.5 years in a multicenter, open-label, prospective, randomized, controlled clinical study.5 Patients received either 25 IU/kg every other day (primary prophylaxis; n=32) or at least 3 doses totaling a minimum of 80 IU/kg at the time of a bleeding episode (enhanced episodic; n=33). Joint damage was evaluated by magnetic resonance imaging (MRI) or radiography, as well as the frequency of bleeding episodes. Joint damage detected by MRI or radiography in the ankles, knees, and elbows (i.e., index joints) was statistically significantly lower (p=0.002) for subjects receiving prophylactic therapy (7%) than for subjects receiving episodic therapy (42%). This corresponds to a 6.29-fold relative risk of joint damage for subjects treated with enhanced episodic therapy compared to prophylaxis. The mean rate of index joint hemorrhages for subjects on episodic therapy was 4.89 bleeds per year, versus 0.63 bleeds per year observed in the prophylaxis arm. Three of 33 (9.1%) subjects in the episodic arm experienced recurrent life threatening bleeds (intracranial, gastrointestinal) compared to no subjects in the prophylaxis arm. On a per joint basis, joints in the regular prophylaxis arm were 8-fold more likely to remain damage-free than those in the episodic arm. Joint damage was most frequently observed in ankle joints and was detected at higher rates by MRI than by radiography. Ankles were also the index joint that demonstrated the highest frequency of bleeding events in this study (left ankle, mean 2.7 hemorrhages; right ankle, mean 2.6 hemorrhages).

As shown in Table 14 below, the incidence of joint damage was statistically significantly lower in the prophylactic group as compared to the episodic treatment group when assessed by MRI, or either MRI or radiography, using predefined criteria (described below) for establishing joint damage. However, there was no statistically significant difference between the two groups when joint damage was assessed by radiography alone.

To evaluate joint damage, MRIs were scored using a scale developed by Nuss et al.,22 and X-rays were scored using the method of Pettersson et al.23 Both scales have been validated in various clinical trials and are routinely used for joint damage evaluation in hemophiliacs. Joint damage was defined as bone and/or cartilage damage including subchondral cysts, erosions and cartilage loss with narrowing of joint space. This corresponded to a total MRI score of ≥ 7 or an X-ray score of ≥ 1 in any of the following categories: subchondral cysts, erosions of joint surfaces or narrowing of joint spaces. Images were read separately by two independent radiologists centrally. Any discrepant reading was read by an independent third radiologist who was not aware of the initial reading results. The concordant reading of two out of three readers was used for analysis purposes.

Table 14 : Subjects with Joint Damage (Subjects with Available Baseline and Endpoint Data)

Endpoint Assessment Prophylaxis Episodic Therapy p- value
Incidence (%) Relative Risk (95% CI) Incidence (%) Relative Risk (95% CI)
MRI 2/27 (7%) 0.17 (0.04. 0.67) 13/29 (45%) 6.05 (1.50. 24.38) 0.002
Radiography 1/28 (4%) 0.19 (0.02. 1.55) 5/27 (19%) 5.19 (0.65. 41.54) 0.101
MRI or Radiography 2/30 (7%) 0.16 (0.04. 0.65) 13/31 (42%) 6.29 (1.55. 25.55) 0.002

Relative Risk is the risk of damage to one or more index joints on the given therapy as compared to the other therapy.

P-value is from the 2-sided Fisher Exact Test comparing the incidence of joint damage between treatment groups.

As shown in Table 15 below, the assessment of endpoints in all randomized subjects assuming that those without complete baseline and endpoint data are treatment failures (intention-to-treat analysis). The incidence of joint damage was statistically significantly lower in the prophylactic group as compared to the episodic treatment group, with similar pvalues, when assessed by MRI, or either MRI or radiography.

Table 15 : Subjects with Joint Damage (All Randomized Subjects Assuming Subjects without Complete Baseline and Endpoint Data as Treatment Failures)

Endpoint Assessment Prophylaxis
(n=32)
Episodic Therapy
(n=33)
p-value
Incidence (%) Relative Risk (95% CI) Incidence (%) Relative Risk (95% CI)
MRI 7 (22%) 0.42 (0.20. 0.88) 17 (52%) 2.35 (1.13. 4.90) 0.020
Radiography 5 (16%) 0.47 (0.18. 1.20) 11 (33%) 2.13 (0.83. 5.45) 0.150
MRI or Radiography 8 (25%) 0.43 (0.22. 0.85) 19 (58%) 2.30 (1.18. 4.49) 0.012

Relative Risk is the risk of damage to one or more index joints on the given therapy as compared to the other therapy. P-value is from the 2-sided Fisher Exact Test comparing the incidence of joint damage between treatment groups.

REFERENCES

5. Manco-Johnson MJ, Abshire TC, Shapiro AD, Riske B, Hacker MR, Kilcoyne R, et al. Prophylaxis versus episodic treatment to prevent joint disease in boys with severe hemophilia. N Engl J Med 2007;357(6):535-44.

7. Barnes C, Lillicrap D, Pazmino-Canizares J, et al: Pharmacokinetics of recombinant factor VIII (Kogenate-FS®) in children and causes of inter-patient pharmacokinetic variability. Haemophilia 12 (Suppl. 4): 40-49, 2006.

22. Nuss R, Kilcoyne RF, Geraghty S, et al: MRI findings in haemophilic joints treated with radiosynoviorthesis with development of an MRI scale of joint damage. Haemophilia 6:162-169, 2000.

23. Pettersson H, Ahlberg A, Nilsson IM: A radiologic classification of hemophilia arthropathy. Clin Orthop Relat Res 149:153-159, 1980.

Last reviewed on RxList: 6/11/2012
This monograph has been modified to include the generic and brand name in many instances.

PATIENT INFORMATION

Kogenate FS
(ko-jen-ate)
Antihemophilic Factor (Recombinant)

Formulated with Sucrose

This leaflet summarizes important information about Kogenate FS. Please read it carefully before using this medicine. This information does not take the place of talking with your healthcare provider, and it does not include all of the important information about Kogenate FS. If you have any questions after reading this, ask your healthcare provider.

Do not attempt to self-infuse unless you have been taught how by your healthcare provider or hemophilia center.

What is Kogenate FS?

Kogenate FS is a medicine used to replace clotting factor (factor VIII or antihemophilic factor) that is missing in people with hemophilia A (also called “classic” hemophilia). Hemophilia A is an inherited bleeding disorder that prevents blood from clotting normally.

Kogenate FS is used to prevent and control bleeding in adults and children (0-16 years) with hemophilia A. Your healthcare provider may give you Kogenate FS when you have surgery. Kogenate FS can reduce the number of bleeding episodes when used regularly and reduce the risk of joint damage in children.

Kogenate FS is not used to treat von Willebrand's Disease.

Who should not use Kogenate FS?

You should not use Kogenate FS if you

  • are allergic to rodents (like mice and hamsters).
  • are allergic to any ingredients in Kogenate FS.

Tell your healthcare provider if you are pregnant or breast-feeding because Kogenate FS may not be right for you.

What should I tell my healthcare provider before I use Kogenate FS?

Tell your healthcare provider about all of your medical conditions.

Tell your healthcare provider and pharmacist about all of the medicines you take, including all prescription and nonprescription medicines, such as over-the-counter medicines, supplements, or herbal remedies.

Tell your healthcare provider if you have been told that you have inhibitors to factor VIII (because Kogenate FS may not work for you).

What are the possible side effects of Kogenate FS?

You could have an allergic reaction to Kogenate FS. Call your healthcare provider right away and stop treatment if you get

  • rash or hives
  • itching
  • tightness of the chest or throat
  • difficulty breathing
  • light-headed, dizziness
  • nausea
  • decrease in blood pressure

Your body can also make antibodies, called “inhibitors,” against Kogenate FS, which may stop Kogenate FS from working properly. Consult with your healthcare provider to make sure you are carefully monitored with blood tests for the development of inhibitors to factor VIII.

Other common side effects of Kogenate FS are

  • Local injection site reactions (pain, swelling, irritation at infusion site)
  • Infections from implanted injection device

Tell your healthcare provider about any side effect that bothers you or that does not go away.

Finding veins for injections may be difficult in young children. When frequent injections are required your child's healthcare provider may propose to have a device surgically placed under the skin to facilitate access to the bloodstream. These devices may result in infections.

These are not all the possible side effects with Kogenate FS. You can ask your healthcare provider for information that is written for healthcare professionals.

How do I store Kogenate FS?

Do not freeze Kogenate FS.

Store Kogenate FS at +2°C to +8°C (36°F to 46°F) for up to 30 months from the date of manufacture. Within this period, Kogenate FS may be stored for a period of up to 12 months at temperatures up to +25°C or 77°F.

The starting date of room temperature storage should be clearly recorded on the unopened product carton. Once stored at room temperature, the product must not be returned to the refrigerator. The shelf-life then expires after the storage at room temperature, or the expiration date on the product vial, whichever is earlier. Store vials in their original carton and protect them from extreme exposure to light.

Reconstituted product (after mixing dry products with wet diluent) must be used within 3 hours and cannot be stored.

Throw away any unused Kogenate FS after the expiration date.

Do not use reconstituted Kogenate FS if it is not clear to slightly cloudy and colorless.

What else should I know about Kogenate FS and hemophilia A?

Medicines are sometimes prescribed for purposes other than those listed here. Do not use Kogenate FS for a condition for which it is not prescribed. Do not share Kogenate FS with other people, even if they have the same symptoms that you have.

This leaflet summarizes the most important information about Kogenate FS. If you would like more information, talk to your healthcare provider. You can ask your healthcare provider or pharmacist for information about Kogenate FS that was written for healthcare professionals.

Instructions for use

How should I take Kogenate FS?

Do not attempt to self-infuse unless you have been taught how by your healthcare provider or hemophilia center.

See the step-by-step instructions for reconstituting Kogenate FS at the end of this leaflet and the specific infusion instruction leaflet provided.

You should always follow the specific instructions given by your healthcare provider. The steps listed below are general guidelines for using Kogenate FS. If you are unsure of the procedures, please call your healthcare provider before using.

Call your healthcare provider right away if bleeding is not controlled after using Kogenate FS.

Your healthcare provider will prescribe the dose that you should take.

Your healthcare provider may need to take blood tests from time to time.

Talk to your healthcare provider before traveling. You should plan to bring enough Kogenate FS for your treatment during this time.

Carefully handle Kogenate FS. Dispose of all materials, including any leftover reconstituted Kogenate FS product, in an appropriate container.

Reconstitution and use of Kogenate FS

Always work on a clean surface and wash your hands before performing the following procedures:

1. Warm the unopened diluent and the concentrate to a temperature not to exceed 37°C or 99°F.

2. After removing the plastic flip-top caps (Fig. A), clean the rubber stoppers of both bottles with alcohol wipes. Be careful not to handle the rubber stopper.

Figure A

Remove plastic flip-top cap - Illustration

3. Remove the cover from one end of the plastic transfer needle cartridge and insert into the stopper of the diluent bottle (Fig. B).

Figure B

Diluent bottle - Illustration

4. Remove the rest of the cover from the needle cartridge. Turn over the diluent bottle. With the needle at an angle, insert into the rubber seal on the concentrate bottle (Fig. C).

Figure C

Insert needle at an angle - Illustration

5. The vacuum will suck the diluent into the concentrate bottle. Hold the diluent bottle at an angle to the concentrate bottle in order to direct the stream of diluent against the wall of the concentrate bottle (Fig. C). Avoid too much foaming. If the diluent does not get into the bottle, the product should not be used.

6. Remove the diluent bottle and transfer needle (Fig. D). Gently, swirl the bottle until the Kogenate FS infusion liquid is dissolved. Be careful not to create foam (Fig. E). Throw away any liquid that is cloudy, the wrong color, or contains particles.

Figure D and E

Gently, swirl the bottle - Illustration

7. Clean the stopper of the Kogenate FS infusion liquid bottle with an alcohol wipe. Allow the stopper to air dry.

8. Using the filter needle from the infusion set, suck the infusion liquid into the syringe (Fig. F). Replace the filter needle with the vein needle from the infusion set and follow the specific instructions for infusion provided in the accompanying infusion set leaflet.

Figure F

Suck the infusion liquid into the syringe - Illustration

9. If the same patient is getting more than one bottle for an infusion, the contents of two infusion liquid bottles can be sucked into the same syringe using separate unused filter needles before attaching the vein needle.

Rate of administration

The entire dose of Kogenate FS can usually be infused within 1 to 15 minutes. However, your healthcare provider will determine the rate of administration that is best for you.

Resources at Bayer available to the patient:

For Adverse Reaction Reporting contact: Bayer Medical Communications 1-888-84-BAYER (1-888-842-2937)

Last reviewed on RxList: 6/11/2012
This monograph has been modified to include the generic and brand name in many instances.

>

PATIENT INFORMATION

Kogenate FS
(ko-jen-ate)
Antihemophilic Factor (Recombinant)

Formulated with Sucrose

This leaflet summarizes important information about Kogenate FS. Please read it carefully before using this medicine. This information does not take the place of talking with your healthcare provider, and it does not include all of the important information about Kogenate FS. If you have any questions after reading this, ask your healthcare provider.

Do not attempt to self-infuse unless you have been taught how by your healthcare provider or hemophilia center.

What is Kogenate FS?

Kogenate FS is a medicine used to replace clotting factor (factor VIII or antihemophilic factor) that is missing in people with hemophilia A (also called “classic” hemophilia). Hemophilia A is an inherited bleeding disorder that prevents blood from clotting normally.

Kogenate FS is used to prevent and control bleeding in adults and children (0-16 years) with hemophilia A. Your healthcare provider may give you Kogenate FS when you have surgery. Kogenate FS can reduce the number of bleeding episodes when used regularly and reduce the risk of joint damage in children.

Kogenate FS is not used to treat von Willebrand's Disease.

Who should not use Kogenate FS?

You should not use Kogenate FS if you

  • are allergic to rodents (like mice and hamsters).
  • are allergic to any ingredients in Kogenate FS.

Tell your healthcare provider if you are pregnant or breast-feeding because Kogenate FS may not be right for you.

What should I tell my healthcare provider before I use Kogenate FS?

Tell your healthcare provider about all of your medical conditions.

Tell your healthcare provider and pharmacist about all of the medicines you take, including all prescription and nonprescription medicines, such as over-the-counter medicines, supplements, or herbal remedies.

Tell your healthcare provider if you have been told that you have inhibitors to factor VIII (because Kogenate FS may not work for you).

What are the possible side effects of Kogenate FS?

You could have an allergic reaction to Kogenate FS. Call your healthcare provider right away and stop treatment if you get

  • rash or hives
  • itching
  • tightness of the chest or throat
  • difficulty breathing
  • light-headed, dizziness
  • nausea
  • decrease in blood pressure

Your body can also make antibodies, called “inhibitors,” against Kogenate FS, which may stop Kogenate FS from working properly. Consult with your healthcare provider to make sure you are carefully monitored with blood tests for the development of inhibitors to factor VIII.

Other common side effects of Kogenate FS are

  • Local injection site reactions (pain, swelling, irritation at infusion site)
  • Infections from implanted injection device

Tell your healthcare provider about any side effect that bothers you or that does not go away.

Finding veins for injections may be difficult in young children. When frequent injections are required your child's healthcare provider may propose to have a device surgically placed under the skin to facilitate access to the bloodstream. These devices may result in infections.

These are not all the possible side effects with Kogenate FS. You can ask your healthcare provider for information that is written for healthcare professionals.

How do I store Kogenate FS?

Do not freeze Kogenate FS.

Store Kogenate FS at +2°C to +8°C (36°F to 46°F) for up to 30 months from the date of manufacture. Within this period, Kogenate FS may be stored for a period of up to 12 months at temperatures up to +25°C or 77°F.

The starting date of room temperature storage should be clearly recorded on the unopened product carton. Once stored at room temperature, the product must not be returned to the refrigerator. The shelf-life then expires after the storage at room temperature, or the expiration date on the product vial, whichever is earlier. Store vials in their original carton and protect them from extreme exposure to light.

Reconstituted product (after mixing dry products with wet diluent) must be used within 3 hours and cannot be stored.

Throw away any unused Kogenate FS after the expiration date.

Do not use reconstituted Kogenate FS if it is not clear to slightly cloudy and colorless.

What else should I know about Kogenate FS and hemophilia A?

Medicines are sometimes prescribed for purposes other than those listed here. Do not use Kogenate FS for a condition for which it is not prescribed. Do not share Kogenate FS with other people, even if they have the same symptoms that you have.

This leaflet summarizes the most important information about Kogenate FS. If you would like more information, talk to your healthcare provider. You can ask your healthcare provider or pharmacist for information about Kogenate FS that was written for healthcare professionals.

Instructions for use

How should I take Kogenate FS?

Do not attempt to self-infuse unless you have been taught how by your healthcare provider or hemophilia center.

See the step-by-step instructions for reconstituting Kogenate FS at the end of this leaflet and the specific infusion instruction leaflet provided.

You should always follow the specific instructions given by your healthcare provider. The steps listed below are general guidelines for using Kogenate FS. If you are unsure of the procedures, please call your healthcare provider before using.

Call your healthcare provider right away if bleeding is not controlled after using Kogenate FS.

Your healthcare provider will prescribe the dose that you should take.

Your healthcare provider may need to take blood tests from time to time.

Talk to your healthcare provider before traveling. You should plan to bring enough Kogenate FS for your treatment during this time.

Carefully handle Kogenate FS. Dispose of all materials, including any leftover reconstituted Kogenate FS product, in an appropriate container.

Reconstitution and use of Kogenate FS

Always work on a clean surface and wash your hands before performing the following procedures:

1. Warm the unopened diluent and the concentrate to a temperature not to exceed 37°C or 99°F.

2. After removing the plastic flip-top caps (Fig. A), clean the rubber stoppers of both bottles with alcohol wipes. Be careful not to handle the rubber stopper.

Figure A

Remove plastic flip-top cap - Illustration

3. Remove the cover from one end of the plastic transfer needle cartridge and insert into the stopper of the diluent bottle (Fig. B).

Figure B

Diluent bottle - Illustration

4. Remove the rest of the cover from the needle cartridge. Turn over the diluent bottle. With the needle at an angle, insert into the rubber seal on the concentrate bottle (Fig. C).

Figure C

Insert needle at an angle - Illustration

5. The vacuum will suck the diluent into the concentrate bottle. Hold the diluent bottle at an angle to the concentrate bottle in order to direct the stream of diluent against the wall of the concentrate bottle (Fig. C). Avoid too much foaming. If the diluent does not get into the bottle, the product should not be used.

6. Remove the diluent bottle and transfer needle (Fig. D). Gently, swirl the bottle until the Kogenate FS infusion liquid is dissolved. Be careful not to create foam (Fig. E). Throw away any liquid that is cloudy, the wrong color, or contains particles.

Figure D and E

Gently, swirl the bottle - Illustration

7. Clean the stopper of the Kogenate FS infusion liquid bottle with an alcohol wipe. Allow the stopper to air dry.

8. Using the filter needle from the infusion set, suck the infusion liquid into the syringe (Fig. F). Replace the filter needle with the vein needle from the infusion set and follow the specific instructions for infusion provided in the accompanying infusion set leaflet.

Figure F

Suck the infusion liquid into the syringe - Illustration

9. If the same patient is getting more than one bottle for an infusion, the contents of two infusion liquid bottles can be sucked into the same syringe using separate unused filter needles before attaching the vein needle.

Rate of administration

The entire dose of Kogenate FS can usually be infused within 1 to 15 minutes. However, your healthcare provider will determine the rate of administration that is best for you.

Resources at Bayer available to the patient:

For Adverse Reaction Reporting contact: Bayer Medical Communications 1-888-84-BAYER (1-888-842-2937)

Last reviewed on RxList: 6/11/2012
This monograph has been modified to include the generic and brand name in many instances.

Disclaimer

Kogenate FS Consumer

IMPORTANT: HOW TO USE THIS INFORMATION: This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.

ANTIHEMOPHILIC FACTOR (FACTOR VIII), RECOMBINANT - INJECTION

(AN-tye-HEE-moe-FIL-ik FAK-tor, ree-KOM-bi-nant)

COMMON BRAND NAME(S): Advate, Helixate, Kogenate, Recombinate

USES: This medication is used to control and prevent bleeding episodes in people with low levels of factor VIII (hemophilia A). It is also used in these patients before surgery to prevent bleeding. People with low factor VIII levels are at risk for bleeding longer after an injury/surgery and for bleeding inside the body (especially into the joints and muscles). This product contains a man-made form of factor VIII, also called antihemophilic factor. This product is used to temporarily replace the missing factor VIII, a protein (clotting factor) that is normally in the blood, so that the blood can clot and the bleeding can stop.

This medication should not be used to treat von Willebrand disease.

HOW TO USE: This medication is given by injection into a vein, usually over 5 to 10 minutes or as directed by your doctor. The medication may need to be given more slowly over a longer time depending on your dose and how you respond to it.

After first receiving this medication in a hemophilia treatment center or hospital, some patients may be able to give this medication to themselves at home. If your doctor directs you to give this medication at home, read the Patient Information Leaflet available from your pharmacist before you start using this medication and each time you get a refill. Learn all preparation and usage instructions in the product package. Learn how to store and discard needles and medical supplies safely. If you have any questions, ask your health care professional.

If the medication and the solution used to mix it were refrigerated, bring both to room temperature before combining. After adding the solution to the powder, gently swirl the mixture to completely dissolve the powder. Do not shake. Before using this product, check it visually for particles or discoloration. If either is present, do not use the liquid. Use immediately according to the product instructions.

The dosage is based on your medical condition, weight, blood test results, and response to treatment. Follow your doctor's instructions closely.

Tell your doctor if your condition does not improve or if it worsens.

Disclaimer

Kogenate FS Consumer (continued)

SIDE EFFECTS: Flushing of the face, headache, nausea, and fast heartbeat may sometimes occur and can be lessened by giving this medication more slowly. Burning/redness/irritation at the injection site, fever, and chills may also occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing, chest discomfort/tightness.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Read the Kogenate FS (antihemophilic factor (recombinant)) Side Effects Center for a complete guide to possible side effects »

PRECAUTIONS: Before using this medication, tell your doctor or pharmacist if you are allergic to any antihemophilic factor (factor VIII) products; or to animal proteins (e.g., mouse, hamster, cow); or if you have any other allergies. This product may contain inactive ingredients (such as natural rubber/latex found in the packaging of some brands), which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history.

Manufacturers of some brands of this medication recommend that you monitor your heartbeat during treatment. If your heart starts to beat faster, it is recommended that you give this medication more slowly or temporarily stop the infusion until your heart rate returns to normal. Consult your doctor for more details.

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

It is not known whether this drug passes into breast milk. Consult your doctor before breast-feeding.

Disclaimer

Kogenate FS Consumer (continued)

DRUG INTERACTIONS: Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor or pharmacist first.

Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use.

Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

OVERDOSE: If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US National Poison Hotline at 1-800-222-1222. Canada residents can call a provincial poison control center.

NOTES: Do not share this medication with others.

Laboratory blood tests (e.g., factor VIII levels) should be performed frequently to determine your dosage and to check how well this medication is working. Consult your doctor for more details.

MISSED DOSE: It is important to follow the dosing schedule as directed by your doctor. If you miss a dose, contact your doctor to establish a new dosing schedule. Do not double the dose to catch up.

STORAGE: Store the medication according to the manufacturer's instructions. Ask your pharmacist if you have any questions. Do not freeze this product or store it in the bathroom. Protect the product from light. After mixing, use the product within the time frame stated in the manufacturer's instructions and throw away any unused portion. Keep all medications away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details.

MEDICAL ALERT: Your condition can cause complications in a medical emergency. For information about enrolling in MedicAlert, call 1-800-854-1166 (USA) or 1-800-668-1507 (Canada).

Information last revised January 2011. Copyright(c) 2011 First Databank, Inc.

Kogenate FS Patient Information Including Side Effects

Brand Names: Advate rAHF-PFM, Helixate FS, Kogenate FS, Kogenate FS with Bioset, Recombinate, Refacto

Generic Name: antihemophilic factor (recombinant) (Pronunciation: ant ee hee moe FIL ik FAK tor (ree KOM bin ant))

What is recombinant antihemophilic factor (Kogenate FS)?

Antihemophilic factor is a naturally occurring protein in the blood that helps blood to clot. A lack of antihemophilic factor VIII is the cause of hemophilia A.

This medication works by temporarily raising levels of factor VIII in the blood to aid in clotting.

Recombinant antihemophilic factor is used to treat or prevent bleeding episodes in adults and children with hemophilia A. It is also used to control bleeding related to surgery or dentistry in a person with hemophilia, and to prevent joint damage in people age 16 or older with severe hemophilia A and no prior joint damage.

Recombinant antihemophilic factor is not for use in people with von Willebrand disease.

Recombinant antihemophilic factor may also be used for purposes not listed in this medication guide.

What are the possible side effects of recombinant antihemophilic factor?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; feeling light-headed, fainting; swelling of your face, lips, tongue, or throat.

Stop using recombinant antihemophilic factor and call your doctor at once if you have a serious side effect such as:

  • chest pain;
  • easy bruising, increased bleeding episodes; or
  • bleeding from a wound or where the medicine was injected.

Less serious side effects may include:

  • sore throat, cough, runny nose;
  • fever or chills;
  • mild nausea, vomiting;
  • unusual or unpleasant taste in your mouth;
  • skin itching or rash;
  • warmth, redness, itching, or tingling under your skin;
  • joint pain or swelling;
  • dizziness;
  • headache; or
  • swelling, stinging, or irritation where the injection was given.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the Kogenate FS (antihemophilic factor (recombinant)) Side Effects Center for a complete guide to possible side effects »

What is the most important information I should know about recombinant antihemophilic factor?

Do not use this medication if you have ever had a severe allergic reaction to antihemophilic factor in the past, or if you are allergic to mouse or beef proteins.

Before using recombinant antihemophilic factor, your specific blood clotting disorder must be diagnosed as factor VIII deficiency. Human antihemophilic factor will not treat von Willebrand disease.

Your body may develop antibodies to this medication, making it less effective. Call your doctor if this medicine seems to be less effective in controlling your bleeding.

To be sure this medication is helping your condition and is not causing harmful effects, your blood may need to be tested often. Visit your doctor regularly.

Wear a medical alert tag or carry an ID card stating that you have hemophilia. Any doctor, dentist, or emergency medical care provider who treats you should know that you have a bleeding or blood-clotting disorder.

Kogenate FS Patient Information including How Should I Take

What should I discuss with my health care provider before using recombinant antihemophilic factor?

Do not use this medication if you have ever had a severe allergic reaction to antihemophilic factor in the past, or if you are allergic to mouse or beef proteins.

Before using recombinant antihemophilic factor, your specific blood clotting disorder must be diagnosed as factor VIII deficiency. Recombinant antihemophilic factor will not treat von Willebrand disease.

FDA pregnancy category C. It is not known whether recombinant antihemophilic factor will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.

It is not known whether recombinant antihemophilic factor passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

How should I use recombinant antihemophilic factor?

Use exactly as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label. Always check the strength of the medicine on the label to be sure you are using the correct potency.

Recombinant antihemophilic factor is injected into a vein through an IV. You may be shown how to use an IV at home. Do not self-inject this medicine if you do not fully understand how to give the injection and properly dispose of used needles, IV tubing, and other items used to inject the medicine.

This medication comes with patient instructions for safe and effective use. Follow these directions carefully. Ask your doctor or pharmacist if you have any questions.

Always wash your hands before preparing and giving your injection.

Recombinant antihemophilic factor must be mixed with a liquid (diluent) before injecting it. If you store your medicine in the refrigerator, take a medicine and diluent vial out of the refrigerator and allow each to reach room temperature before mixing them.

Gently swirl the medicine and diluent to mix them and allow the medicine to completely dissolve.

After mixing the medicine and diluent, the mixture should be kept at room temperature and must be used within 3 hours. Do not put mixed medicine into the refrigerator.

Prepare your dose in a syringe only when you are ready to give yourself an injection. Each vial is for one use only. After measuring your dose, throw the vial away, even if there is medicine left in it.

Do not use the medication if it has changed colors or has particles in it. Call your doctor for a new prescription.

Use each disposable needle only one time. Throw away used needles in a puncture-proof container (ask your pharmacist where you can get one and how to dispose of it). Keep this container out of the reach of children and pets.

Recombinant antihemophilic factor is usually given every 8 to 24 hours for 1 to 4 days, depending on the reason you are using the medication.

To be sure this medication is helping your condition and is not causing harmful effects, your blood may need to be tested often. Visit your doctor regularly.

Your body may develop antibodies to antihemophilic factor, making it less effective. Call your doctor if this medicine seems to be less effective in controlling your bleeding.

Wear a medical alert tag or carry an ID card stating that you have hemophilia. Any doctor, dentist, or emergency medical care provider who treats you should know that you have a bleeding or blood-clotting disorder.

Store the medication and the diluent in the refrigerator and do not allow them to freeze.

You may also store the medication and diluent at room temperature until the expiration date on the label. Some brands of this medicine can be stored at room temperature for only a certain number of months, or until the expiration date (whichever comes first). Follow the storage directions on the medicine label.

Do not store this medicine in bright light. Throw away any leftover medicine and diluent if the expiration date has passed.

Kogenate FS Patient Information including If I Miss a Dose

What happens if I miss a dose?

Recombinant antihemophilic factor is sometimes used only as needed, so you may not be on a dosing schedule. If you are taking the medication regularly, use the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while using recombinant antihemophilic factor?

Follow your doctor's instructions about any restrictions on food, beverages, or activity.

What other drugs will affect recombinant antihemophilic factor?

There may be other drugs that can interact with recombinant antihemophilic factor. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about recombinant antihemophilic factor.


Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

Copyright 1996-2012 Cerner Multum, Inc. Version: 6.01. Revision date: 1/15/2011.

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