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Package Leaflet: Information for the User
RIXUBIS250UI Powder andsolvent for solution for injection
RIXUBIS500UI Powder andsolvent for solution for injection
RIXUBIS1000UI Powder andsolvent for solution for injection
RIXUBIS2000UI Powder andsolvent for solution for injection
RIXUBIS3000UI Powder andsolvent for solution for injection
nonacog gamma (recombinant human coagulation factor IX)
Read all of this leaflet carefully before you start using this medicine because it contains important information for you.
Contents of the pack
RIXUBIS contains the active substance nonacog gamma and is a human coagulation factor IX. Factor IX is a normal component of human blood necessary for its proper coagulation. RIXUBIS is used in patients with hemophilia B (Christmas disease, a hereditary blood disorder caused by a deficiency of factor IX). It works by replacing the missing factor IX to allow the patient's blood to clot.
RIXUBIS is used for the treatment and prevention of bleeding in patients with hemophilia B of all age groups.
Do not use RIXUBIS
Warnings andprecautions
It is possible that allergic-type hypersensitivity reactions may occur with RIXUBIS. Stop the infusion and contact your doctor immediately or seek urgent medical attention if you experience the first signs of hypersensitivity/allergic reactions such as hives, rash, chest tightness, wheezing, low blood pressure, or anaphylaxis (a severe allergic reaction that can cause difficulty swallowing and/or breathing, red and/or swollen face and/or hands). Your doctor may need to treat you immediately in case of these reactions. Your doctor may also perform a blood test to check if you have developed neutralizing antibodies (inhibitors) against the medicine, as inhibitors can develop along with allergies. Patients with factor IX inhibitors may have a higher risk of anaphylaxis during subsequent treatment with factor IX.
Consult your doctor immediately if the bleeding does not stop as expected or if you experience a significant increase in the use of RIXUBIS to control a bleed. Your doctor will perform a blood test to check if you have developed neutralizing antibodies (inhibitors) against RIXUBIS. The risk of developing inhibitors is higher in patients who have not been previously treated with a factor IX substitute medicine or in the early stages of treatment, i.e., in the case of young children.
The production of factor IX in the body is controlled by the factor IX gene. Patients who have specific mutations in their factor IX gene, such as a large deletion, may be more likely to have factor IX inhibitors and an allergic reaction in the early stages with any factor IX concentrate. Therefore, if you are known to have such a mutation, your doctor will monitor you more closely for signs of an allergic reaction.
If you have liver or heart disease, or if you have recently undergone major surgery, inform your doctor, as there is a higher risk of complications in blood coagulation.
There have been reports of kidney disorders (nephrotic syndrome) after administration of high doses of factor IX in patients with hemophilia B who had factor IX inhibitors and a history of allergic reactions.
Whenever possible, record the name of the medicine and the batch number each time you use RIXUBIS (e.g., in your diary) to keep a record of the medicines and batches you have used.
Using RIXUBIS with other medicines
Tell your doctor if you are using, have recently used, or might use any other medicines. No interactions of RIXUBIS with other medicines have been reported.
Pregnancy, breastfeeding, andfertility
If you are pregnant or breastfeeding, think you may be pregnant, or are planning to have a baby, ask your doctor for advice before using this medicine. Hemophilia B occurs very rarely in women.
Driving andusing machines
RIXUBIS has no influence on the ability to drive and use machines.
RIXUBIS contains sodium
This medicine contains less than 1 mmol of sodium (23 mg) per vial, i.e., essentially sodium-free. However, depending on your body weight and your dose of RIXUBIS, you may receive more than one vial. This should be taken into account if you are on a low-sodium diet.
Treatment with RIXUBIS will be started by a doctor experienced in the treatment of patients with hemophilia B.
Follow exactly the administration instructions of this medicine given by your doctor. If you are unsure, consult your doctor again.
Your doctor will decide the dose of RIXUBIS that will be administered to you. This dose and duration will depend on the severity of your factor IX deficiency, the location and extent of the bleeding, as well as your clinical condition, age, and the rate at which your body consumes factor IX, which should be checked regularly.
Your doctor or nurse will administer RIXUBIS to you by intravenous (IV) infusion after reconstituting the powder with the supplied solvent. You or any other person can also administer the injection of RIXUBIS, but only after receiving adequate training.
Reconstitution and administration
Reconstitution
Use aseptic technique:




Do not refrigerate the preparation after reconstitution.
Use immediately.
Administration
Use aseptic technique:


Whenever possible, record the name of the medicine and the batch number each time you use RIXUBIS (e.g., in your diary) to keep a record of the medicines and batches you have used.
The disposal of unused medicine and all materials that have been in contact with it will be carried out in accordance with local regulations.
If you use more RIXUBIS than you should
Follow exactly the administration instructions of RIXUBIS given by your doctor. If you are unsure, consult your doctor again. If you inject a higher dose of RIXUBIS than recommended, consult your doctor as soon as possible.
If you forget to use RIXUBIS
Do not inject a double dose to make up for forgotten doses. Administer the next injection as scheduled and continue as your doctor has instructed.
If you stop using RIXUBIS
Do not stop using RIXUBIS without consulting your doctor.
If you have any further questions on the use of this medicine, ask your doctor or pharmacist.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
It is possible that allergic-type hypersensitivity reactions may occur with RIXUBIS. These reactions include burning and stinging at the infusion site, chills, flushing, lethargy, restlessness, tingling, hives, itching, and rash, low blood pressure, rapid heart rate, chest tightness, wheezing, throat swelling, anaphylaxis (severe allergic reaction), headache, nausea, and vomiting. Consult your doctor immediately if you experience these signs. Your doctor may need to treat you immediately in case of these reactions (see section 2 'Warnings and precautions').
The following side effects have been observed with RIXUBIS:
Common side effects(may affect up to 1 in 10 people)
Side effects with unknown frequency(cannot be estimated from the available data)
No problems caused by excessive blood coagulation (thromboembolic events) have been observed with this medicine, but they can occur with any factor IX product. These include heart attacks, blood clots in the veins or lungs.
Reporting of side effects
If you experience any side effects, talk to your doctor, pharmacist, or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly through the national reporting system listed in Appendix V. By reporting side effects, you can help provide more information on the safety of this medicine.
Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the outer packaging and on the vial label after EXP. The expiry date is the last day of the month stated.
Store below 30°C.
Do not freeze.
Use the reconstituted solution immediately.
Do not use RIXUBIS if the solution is not colorless and transparent.
Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help protect the environment.
RIXUBIS Composition
Solvent vial: 5 ml of sterile water for injectable preparations.
Product Appearance andContainer Content
RIXUBIS is provided as a powder and solvent for solution for injection.
The container content is as follows:
Marketing Authorization Holder
Baxalta Innovations GmbH
Industriestrasse 67
A-1221 Vienna
Tel.: 800 66838470 E-mail: [email protected]
Manufacturer
Baxalta Belgium Manufacturing SA
Boulevard René Branquart 80
B-7860 Lessines
Belgium
Date of Last Revision of this Prospectus 01/2020
Detailed information on this medicinal product is available on the European Medicines Agency website: http://www.ema.europa.eu.
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This information is intended solely for healthcare professionals:
Treatment Monitoring
During treatment, it is recommended to determine the appropriate levels of factor IX to calculate the dose to be administered and the frequency of repeated infusions. Individual patients may differ in their response to factor IX with different half-lives and recoveries. The dose based on body weight may require adjustment in patients with low weight or overweight. In the particular case of major surgical interventions, precise monitoring of replacement therapy through coagulation analysis (plasma factor IX activity) is essential.
To ensure that the desired plasma level of factor IX activity has been achieved, it is recommended to perform thorough monitoring using an appropriate factor IX activity assay, and if necessary, to apply the appropriate adjustments to the dose and frequency of repeated infusions. When using the in vitro coagulation assay in one stage based on the activated partial thromboplastin time (aPTT) to determine factor IX activity in patient blood samples, the results of factor IX activity may be significantly affected by the type of aPTT reagent and reference standard used in the assay. This is especially important when changing the laboratory and/or reagents used in the assay.
Posology
The dose and duration of replacement therapy depend on the severity of the factor IX deficiency, the location and extent of the hemorrhage, as well as the patient's clinical condition, age, and pharmacokinetic parameters of factor IX, such as incremental recovery and half-life.
The number of units of factor IX administered is expressed in international units (IU), which are related to the current WHO standard for factor IX products. Factor IX activity in plasma is expressed as a percentage (relative to normal human plasma) or in international units (relative to an international standard for factor IX in plasma).
One international unit of factor IX activity is equivalent to the amount of factor IX present in one milliliter of normal human plasma.
Adult Population
On-demand Treatment: The calculation of the required dose of factor IX is based on the empirical finding that 1 international unit of factor IX per kilogram of body weight increases the factor IX activity of plasma by 0.9 IU/dl (range of 0.5 to 1.4 IU/dl) or 0.9% of normal activity in patients 12 years of age and older (for additional information, see section 5.2).
The required dose is determined using the following formula:
Units Required | = | body weight (kg) | x | desired increase in factor IX (%) or (IU/dl) | x | reciprocal of observed recovery (dl/kg) |
For an incremental recovery of 0.9 IU/dl per IU/kg, the dose is calculated as follows:
Units Required | = | body weight (kg) | x | desired increase in factor IX (%) or (IU/dl) | x | 1.1 dl/kg |
The amount to be administered and the frequency of administration should always be guided by clinical efficacy in the specific case.
In the case of the following hemorrhagic episodes, factor IX activity should not be less than the given plasma activity level (in % of normal or IU/dl) during the corresponding period. The following table can be used as a dosing guide for hemorrhagic episodes and surgery:
Severity of Hemorrhage / Type of Surgical Procedure | Required Factor IX Level (%) or(IU/dl) | Dose Frequency (hours) / Duration of Therapy (days) |
Hemorrhage Early hemarthrosis or muscle or oral hemorrhage More extensive hemarthrosis, muscle hemorrhage, or hematoma Life-threatening hemorrhage. | 20 – 40 30 – 60 60 – 100 | Repeat every 24 hours. At least 1 day, until the hemorrhagic episode, as indicated by pain, is resolved or healing is achieved. Repeat infusion every 24 hours for 3 – 4 days or more, until pain and acute disability cease. Repeat infusion every 8 to 24 hours until the danger has passed. |
Surgery Minor surgery, including dental extraction | 30 – 60 | Every 24 hours, at least 1 day, until healing is achieved. |
Major Surgery | 80 – 100 (pre- and post-operative) | Repeat infusion every 8 to 24 hours until adequate wound healing is achieved, and then for at least another 7 days of therapy to maintain a factor IX activity of 30% to 60% (IU/dl). |
It is especially important to carefully monitor replacement therapy in cases of major surgery or potentially life-threatening hemorrhage.
Prophylaxis
For long-term prophylaxis against hemorrhages in patients with severe hemophilia B, the usual doses are 40 to 60 IU of factor IX per kilogram of body weight at intervals of 3 to 4 days for patients 12 years of age and older. In some cases, depending on pharmacokinetic parameters, age, hemorrhage phenotype, and patient physical activity, shorter dosing intervals or higher doses may be required.
Continuous Infusion
Do not administer RIXUBIS by continuous infusion.
Pediatric Population
Patients 12 to 17 years of age:
The posology is the same for adults and pediatric patients 12 to 17 years of age.
Patients under 12 years of age:
On-demand Treatment:
The calculation of the required dose of factor IX is based on the empirical finding that 1 international unit of factor IX per kilogram of body weight increases the factor IX activity of plasma by 0.7 IU/dl (range of 0.31 to 1.0 IU/dl) or 0.7% of normal activity in patients under 12 years of age (for additional information, see section 5.2).
The required dose is determined using the following formula:
Patients under 12 years of age:
Units Required | = | body weight (kg) | x | desired increase in factor IX (%) or (IU/dl) | x | reciprocal of observed recovery (dl/kg) |
For an incremental recovery of 0.7 IU/dl per IU/kg, the dose is calculated as follows:
Units Required | = | body weight (kg) | x | desired increase in factor IX (%) or (IU/dl) | x | 1.4 dl/kg |
The same table for adults can be used as a dosing guide for hemorrhagic episodes and surgery (see above).
Prophylaxis:
The recommended dosing interval for pediatric patients under 12 years of age is 40 to 80 IU/kg at intervals of 3 to 4 days. In some cases, depending on pharmacokinetic parameters, age, hemorrhage phenotype, and patient physical activity, shorter dosing intervals or higher doses may be required.
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