Pharmacy Guide

Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.

Pharmacy Guide

Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.

← Back to all medicines

ALPROLIX 1000 IU powder and solvent for solution for injection

⚠ This medicine appears to have been discontinued

The electronic medicines compendium (emc) no longer publishes a Summary of Product Characteristics for this product, which usually means it is no longer marketed in the UK. The patient leaflet below is kept for reference, but the product may not be available.

If you were prescribed this medicine, other products containing Eftrenonacog alfa may still be available. Do not stop your treatment — ask your pharmacist or GP what to use instead.

Active substance: Eftrenonacog alfa
Source: electronic medicines compendium (emc)
Official leaflet: Read the PIL on emc

What it is and what it is used for

for

ALPROLIX contains the active substance eftrenonacog alfa, recombinant coagulation factor IX, Fc fusion protein. Factor IX is a protein produced naturally in the body necessary for the blood to form clots and stop bleeding. ALPROLIX is a medicine used for the treatment and prevention of bleeding in all age groups of patients with haemophilia B (inherited bleeding disorder caused by factor IX deficiency). ALPROLIX is prepared by recombinant technology without addition of any human- or animal-derived components in the manufacturing process. How ALPROLIX works In patients with haemophilia B, factor IX is missing or not working properly. This medicine is used to replace the missing or deficient factor IX. ALPROLIX increases factor IX level in the blood and temporarily corrects the bleeding tendency. The Fc fusion protein in this medicine increases the length of time that the medicine works.

1

2.

What you need to know before you take it

e ALPROLIX

Do not use ALPROLIX • if you are allergic to eftrenonacog alfa or any other ingredients of this medicine (listed in section 6). Warnings and precautions Talk to your doctor, pharmacist or nurse before using ALPROLIX. •

There is a small chance that you may experience an anaphylactic reaction (a severe, sudden allergic reaction) to ALPROLIX. Signs of allergic reactions may include, generalised itching, hives, tightness of the chest, difficulty breathing and low blood pressure. If any of these symptoms occur, stop the injection immediately and contact your doctor. Because of the risk of allergic reactions with factor IX, your initial administrations of ALPROLIX should be performed under medical observation where proper medical care for allergic reactions can be provided.

•

Talk to your doctor if you think that your bleeding is not being controlled with the dose you receive, as there can be several reasons for this. For example, the formation of antibodies (also known as inhibitors) to factor IX is a known complication that can occur during the treatment of haemophilia B. The antibodies prevent the treatment from working properly. This would be checked by your doctor. Do not increase the total dose of ALPROLIX to control your bleed without talking to your doctor.

Patients with a factor IX inhibitor may be at an increased risk of anaphylaxis during future treatment with factor IX. Therefore, if you experience allergic reactions such as those described above, you should be tested for the presence of an inhibitor. Factor IX products may increase the risk of unwanted blood clots in your body, especially if you have risk factors for developing blood clots. Symptoms of a possible unwanted blood clot may include: pain and/or tenderness along a vein, unexpected swelling of an arm or leg or sudden shortness of breath or difficulty breathing. Cardiovascular events If you have been told you have heart disease or are at risk for heart disease, take special care when using factor IX and talk to your doctor. Catheter-related complications If you require a central venous access device (CVAD), risk of CVAD-related complications including local infections, presence of bacteria in the blood and catheter site blood clots should be considered. Documentation It is strongly recommended that every time ALPROLIX is given, the name and batch number of the product are recorded. Other medicines and ALPROLIX Tell your doctor or pharmacist if you are using, have recently used or might use any other medicines. Pregnancy and breast-feeding If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine. Driving and using machines ALPROLIX has no influence on the ability to drive and use machines. ALPROLIX contains sodium This medicine contains less than 1 mmol sodium (23 mg) per vial that is to say essentially "sodium free". In case of treatment with multiple vials, the total sodium content should be taken into consideration.

2

3.

How to take it

ALPROLIX

Treatment with ALPROLIX will be started by a doctor who is experienced in the care of patients with haemophilia. Always use this medicine exactly as your doctor has told you (see section 7). Check with your doctor, pharmacist or nurse if you are not sure. ALPROLIX is given as an injection into a vein. You or somebody else may administer it after receiving adequate training. Your doctor will decide the dose (in International Units or "IU") you will receive. The dose will depend on your individual needs for replacement factor IX therapy and on whether it is used for prevention or treatment of bleeding. Talk to your doctor if you think that your bleeding is not being controlled with the dose you receive. How often you need an injection will depend on how well the medicine is working for you. Your doctor will perform appropriate laboratory tests to make sure that you have adequate factor IX levels in your blood. Treatment of bleeding The dose of ALPROLIX is calculated depending on your body weight and the factor IX levels to be achieved. The target factor IX levels will depend on the severity and location of the bleeding. Prevention of bleeding If you are using ALPROLIX to prevent bleeding, your doctor will calculate the dose for you. The usual dose of ALPROLIX is 50 IU per kg of body weight, given once a week or 100 IU per kg of body weight, given once every 10 days. The dose or interval may be adjusted by your doctor. In some cases, especially in younger patients, shorter dosing intervals or higher doses may be necessary. Use in children and adolescents ALPROLIX can be used in children and adolescents of all ages. In children below the age of 12 years, higher doses or more frequent injections may be needed and the usual dose is 50 to 60 IU per kg of body weight, given once every 7 days. If you use more ALPROLIX than you should Tell your doctor as soon as possible. You should always use ALPROLIX exactly as your doctor has told you, check with your doctor, pharmacist or nurse if you are not sure. If you forget to use ALPROLIX Do not take a double dose to make up for a forgotten dose. Take your dose as soon as you remember and then resume your normal dosing schedule. If you are not sure what to do, ask your doctor, pharmacist or nurse. If you stop using ALPROLIX Do not stop using ALPROLIX without consulting your doctor. If you stop using ALPROLIX you may no longer be protected against bleeding or a current bleed may not stop. If you have any further questions on the use of this medicine, ask your doctor, pharmacist or nurse. 4.

Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them. If severe, sudden allergic reactions (anaphylactic reaction) occur, the injection must be stopped immediately. You must contact your doctor immediately if you experience any of the following symptoms of allergic reactions: swelling of the face, rash, generalised itching, hives, tightness of the chest, difficulty breathing, burning and stinging at the injection site, chills, flushing, headache, general feeling of being unwell, nausea, restlessness, fast heartbeat, and low blood pressure.

3

For children not previously treated with factor IX medicines, inhibitors (see section 2) may form commonly (up to 1 in 10 patients). If this happens, the medicine may stop working properly and your child may experience persistent bleeding. If this happens, you should contact your doctor immediately. The following side effects may occur with this medicine. Common side effects (may affect up to 1 in 10 people): headache, mouth numbness or tingling, pain in your side with blood in your urine (obstructive uropathy) and injections site redness. Children not previously treated with factor IX medicines: factor IX inhibitors, hypersensitivity. Uncommon side effects (may affect up to 1 in 100 people): dizziness, taste alteration, bad breath, feeling tired, pain at the injection site, rapid heartbeat, blood in the urine (haematuria), pain in your side (renal colic), low blood pressure, and decreased appetite.

Possible side effects

with frequency not known (frequency cannot be estimated from the available data): sudden, severe allergic reaction and life-threatening allergic reaction (anaphylactic shock). Reporting of side effects If you get any side effects, talk to your doctor or pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via: United Kingdom Yellow Card Scheme Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store By reporting side effects you can help provide more information on the safety of this medicine. 5.

How to store it

ALPROLIX

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 carton and the vial label, listed after "EXP". The expiry date refers to the last day of that month. Do not use this medicine if it has been stored at room temperature for longer than 6 months. Store in a refrigerator (2 °C – 8 °C). Do not freeze. Store in the original pack in order to protect from light. Alternatively, ALPROLIX may be stored at room temperature (up to 30 °C) for a single period not exceeding 6 months. Please record on the carton the date that ALPROLIX is removed from the refrigerator and set at room temperature. After storage at room temperature, the product must not be put back in the refrigerator. Once you have prepared ALPROLIX it should be used right away. If you cannot use the prepared solution immediately, it should be used within 6 hours when stored at room temperature. Do not refrigerate the solution after preparation. Protect the solution from direct sunlight. The prepared solution will be clear to slightly pearl-like (opalescent) and colourless. Do not use this medicine if you notice that it is cloudy or contains visible particles. This product is for single use only. Discard any unused solution appropriately. Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

4

6.

Contents of the pack and other information

What ALPROLIX contains Powder: • The active substance is eftrenonacog alfa (recombinant coagulation factor IX, Fc fusion protein). Each vial of ALPROLIX contains nominally 250, 500, 1000, 2000 or 3000 IU eftrenonacog alfa. • The other ingredients are sucrose, histidine, mannitol, polysorbate 20, sodium hydroxide and hydrochloric acid. If you are on a controlled sodium diet, see section 2. Solvent: 5 mL sodium chloride and water for injections. What ALPROLIX looks like and contents of the pack ALPROLIX is provided as a powder and solvent for solution for injection. The powder is a white to offwhite powder or cake. The solvent provided for preparation of the solution, is a clear, colourless solution. After preparation, the solution is clear to slightly opalescent and colourless. Each pack of ALPROLIX contains 1 powder vial, 5 mL solvent in pre-filled syringe, 1 plunger rod, 1 vial adapter, 1 infusion set, 2 alcohol swabs, 2 plasters and 1 gauze pad. Marketing Authorisation Holder Swedish Orphan Biovitrum AB (publ) SE-112 76 Stockholm Sweden Phone: +46 8 697 20 00 Manufacturer Swedish Orphan Biovitrum AB(publ), Norra Stationsgatan 93, SE-113 64 Stockholm Sweden.

This leaflet was last revised in 10/2024. Please turn the leaflet over for section 7. Instructions for preparation and administration.

5

7.

Instructions for preparation and administration

The procedure below describes the preparation and administration of ALPROLIX. ALPROLIX is administered by intravenous (IV) injection after dissolving the powder for injection with the solvent supplied in the pre-filled syringe. ALPROLIX pack contains: A) 1 Powder vial B) 5 mL Solvent in pre-filled syringe C) 1 Plunger rod D) 1 Vial adapter E) 1 Infusion set F) 2 Alcohol swabs G) 2 Plasters H) 1 Gauze pad

ALPROLIX should not be mixed with other solutions for injection or infusion. Wash your hands before opening the pack. Preparation: 1.

Check the name and strength of the package, to make sure it contains the correct medicine. Check the expiry date on the ALPROLIX carton. Do not use if the product has expired.

2.

If ALPROLIX has been stored in a refrigerator, allow the vial of ALPROLIX (A) and the syringe with solvent (B) to reach room temperature before use. Do not use external heat.

3.

Place the vial on a clean flat surface. Remove the plastic flip-top cap from the vial

4.

Wipe the top of the vial with one of the alcohol swabs (F) provided in the pack and allow to air dry. Do not touch the top of the vial or allow it to touch anything else once wiped.

5.

Peel back the protective paper lid from the clear plastic vial adapter (D). Do not remove the adapter from its protective cap. Do not touch the inside of the vial adapter package.

6

6.

Place the vial on a flat surface. Hold the vial adapter in its protective cap and place it squarely over the top of the vial. Press down firmly until the adapter snaps into place on top of the vial, with the adapter spike penetrating the vial stopper.

7.

Attach the plunger rod (C) to the solvent syringe by inserting the tip of the plunger rod into the opening in the syringe plunger. Turn the plunger rod firmly clockwise until it is securely seated in the syringe plunger.

8.

Break off the white, tamper-resistant, plastic cap from the solvent syringe by bending the perforation cap until it snaps off. Set the cap aside by placing it with the top down on a flat surface. Do not touch the inside of the cap or the syringe tip.

9.

Lift the protective cap away from the adapter and discard.

7

10.

Connect the solvent syringe to the vial adapter by inserting the tip of the syringe into the adapter opening. Firmly push and turn the syringe clockwise until it is securely connected.

11.

Slowly depress the plunger rod to inject all the solvent into the ALPROLIX vial.

12.

With the syringe still connected to the adapter and the plunger rod pressed down, gently swirl the vial until the powder is dissolved. Do not shake.

13.

The final solution must be inspected visually before administration. The solution should appear clear to slightly pearl-like (opalescent) and colourless. Do not use the solution if cloudy or contains visible particles.

14.

Ensuring that the syringe plunger rod is still fully pressed down, invert the vial. Slowly pull on the plunger rod to draw back all the solution through the vial adapter into the syringe. Note: If you use more than one vial of ALPROLIX per injection, each vial should be prepared separately as per the previous instructions (steps 1 to 13) and the solvent syringe should be removed, leaving the vial adapter in place. A single large luer lock syringe may be used to draw back the prepared contents of each of the individual vials.

8

15.

Detach the syringe from the vial adapter by gently pulling and turning the vial counterclockwise.

16.

Discard the vial and the adapter.

Note: If the solution is not to be used immediately, the syringe cap should be carefully put back on the syringe tip. Do not touch the syringe tip or the inside of the cap. After preparation, ALPROLIX can be stored at room temperature for up to 6 hours before administration. After this time, the prepared ALPROLIX should be discarded. Protect from direct sunlight. Administration (Intravenous Injection): ALPROLIX should be administered using the infusion set (E) provided in this pack. 1.

Open the infusion set package and remove the cap at the end of the tubing. Attach the syringe with the prepared ALPROLIX solution to the end of the infusion set tubing by turning clockwise.

2.

If needed apply a tourniquet and prepare the injection site by wiping the skin well with the other alcohol swab provided in the pack.

3.

Remove any air in the infusion set tubing by slowly depressing on the plunger rod until liquid has reached the infusion set needle. Do not push the solution through the needle. Remove the clear plastic protective cover from the needle. 9

4.

Insert the infusion set needle into a vein as instructed by your doctor or nurse and remove the tourniquet. If preferred, you may use one of the plasters (G) provided in the pack to hold the plastic wings of the needle in place at the injection site. The prepared product should be injected intravenously over several minutes. Your doctor may change your recommended injection rate to make it more comfortable for you.

5.

After completing the injection and removing the needle, you should fold over the needle protector and snap it over the needle.

6.

Please safely dispose of the used needle, any unused solution, the syringe and the empty vial in an appropriate medical waste container as these materials may hurt others if not disposed of properly. Do not reuse equipment.

10

Frequently asked questions about ALPROLIX 1000 IU powder and solvent for solution for injection

How do I take ALPROLIX 1000 IU powder and solvent for solution for injection?

ALPROLIX 1000 IU powder and solvent for solution for injection comes as injection containing 1000iu. Always follow the dose your doctor or pharmacist has given you, and read the leaflet that comes with the medicine.

What is the active substance in ALPROLIX 1000 IU powder and solvent for solution for injection?

The active substance in ALPROLIX 1000 IU powder and solvent for solution for injection is eftrenonacog alfa.

Where does this information come from?

This leaflet reproduces the patient information leaflet approved for ALPROLIX 1000 IU powder and solvent for solution for injection, as published on the electronic medicines compendium (emc). The version printed inside your medicine’s packaging is the one that applies to you.

Can I get ALPROLIX 1000 IU powder and solvent for solution for injection without a prescription?

Whether a medicine is available over the counter or on prescription only depends on its licence. Check the leaflet, or ask your pharmacist — they can tell you straight away.

About this leaflet

The text above reproduces the patient information leaflet approved for this medicine, restructured for easier reading.

Medical disclaimer: This page is for information only and does not replace advice from your doctor or pharmacist. Always read the leaflet supplied with your medicine. If you are unwell, call NHS 111; in an emergency, call 999.

Medicines with the same active substance: Eftrenonacog alfa (5 medicines)
See every medicine containing this substance, or browse the full A–Z of active substances.
⚕For healthcare professionals — Summary of Product Characteristics (SmPC)Full SmPC: dosage, interactions, contraindications, warnings+
Technical information intended for healthcare professionals (doctors and pharmacists). The Summary of Product Characteristics (SmPC) is the official document approved by the MHRA/EMA. It does not replace the patient leaflet or a doctor’s advice.

4.1. Therapeutic indications

Treatment and prophylaxis of bleeding in patients with haemophilia B (congenital factor IX deficiency).

ALPROLIX can be used for all age groups.

4.2. Posology and method of administration

Treatment should be under the supervision of a physician experienced in the treatment of haemophilia.

Treatment monitoring

During the course of treatment, appropriate determination of factor IX levels is advised to guide the dose to be administered and the frequency of repeated injections. Individual patients may vary in their response to factor IX, demonstrating different half-lives and recoveries. Dose based on bodyweight may require adjustment in underweight or overweight patients. In the case of major surgical interventions in particular, precise monitoring of the substitution therapy by means of coagulation analysis (plasma factor IX activity) is indispensable.

When using an in vitro thromboplastin time (aPTT)-based one stage clotting assay for determining factor IX activity in patients' blood samples, plasma factor IX activity results can be significantly affected by both the type of aPTT reagent and the reference standard used in the assay. This is of importance particularly when changing the laboratory and/or reagents used in the assay.

Measurements with a one-stage clotting assay utilising a kaolin-based aPTT reagent will likely result in an underestimation of activity level.

Posology

Dose and duration of the substitution therapy depend on the severity of the factor IX deficiency, on the location and extent of the bleeding and on the patient's clinical condition.

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 either 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 (IU) of recombinant factor IX Fc activity is equivalent to that quantity of factor IX in one mL of normal human plasma.

On demand treatment

The calculation of the required dose of recombinant factor IX Fc is based on the empirical finding that 1 International Unit (IU) factor IX per kg body weight raises the plasma factor IX activity by 1 % of normal activity (IU/dL). The required dose is determined using the following formula:

Required units = body weight (kg) × desired factor IX rise (%) (IU/dL) × {reciprocal of observed recovery (IU/kg per IU/dL)}

The amount to be administered and the frequency of administration should always be oriented to the clinical effectiveness in the individual case. If a repeat dose is required to control the bleed, the prolonged half-life of ALPROLIX should be taken into account (see section 5.2). The time to peak activity is not expected to be delayed.

In the case of the following haemorrhagic events, the factor IX activity should not fall below the given plasma activity level (in % of normal or IU/dL) in the corresponding period. Table 1 can be used to guide dosing in bleeding episodes and surgery:

Table 1: Guide to ALPROLIX dosing for treatment of bleeding episodes and surgery

Degree of haemorrhage / Type of surgical procedure

Factor IX level required (%) (IU/dL)

Frequency of doses (hours)/ Duration of therapy (days)

Haemorrhage

Early haemarthrosis, muscle bleeding or oral bleeding

20-40

Repeat injection every 48 hours, until the bleeding episode as indicated by pain is resolved or healing is achieved.

More extensive haemarthrosis, muscle bleeding or haematoma

30-60

Repeat injection every 24 to 48 hours until pain and acute disability are resolved.

Life threatening haemorrhages

60-100

Repeat injection every 8 to 24 hours until threat is resolved.

Surgery

Minor surgery including tooth extraction

30-60

Repeat injection after 24 hours, as needed until healing is achieved1.

Major surgery

80-100

(pre- and post-operative)

Repeat injection every 8 to 24 hours as necessary until adequate wound healing, then therapy at least for another 7 days to maintain a factor IX activity of 30% to 60% (IU/dL).

1 In some patients and circumstances the dosing interval can be prolonged up to 48 hours (see section 5.2 for pharmacokinetic data).

Prophylaxis

For long term prophylaxis against bleeding, the recommended starting regimens are either:

• 50 IU/kg once weekly, adjust dose based on individual response or

• 100 IU/kg once every 10 days, adjust interval based on individual response. Some patients who are well-controlled on a once every 10 days regimen might be treated on an interval of 14 days or longer.

The highest recommended dose for prophylaxis is 100 IU/kg

Elderly population

There is limited experience in patients ≥65 years.

Paediatric population

For children below the age of 12 years, higher or more frequent doses may be required, and the recommended starting dose is 50-60 IU/kg every 7 days. For adolescents of 12 years of age and above, the dose recommendations are the same as for adults. See sections 5.1 and 5.2.

The highest recommended dose for prophylaxis is 100 IU/kg

Method of administration

Intravenous use.

In case of self-administration or administration by a caregiver appropriate training is needed.

ALPROLIX should be injected intravenously over several minutes. The rate of administration should be determined by the patient's comfort level and should not exceed 10 mL/min.

For instructions on reconstitution of the medicinal product before administration, see section 6.6.

4.3. Contraindications

Hypersensitivity to the active substance or to any of the excipients listed in section 6.1.

4.4. Special warnings and precautions for use

Traceability

In order to improve traceability of biological medicinal products, the name and the batch number of the administered product should be clearly recorded.

Hypersensitivity

Allergic type hypersensitivity reactions have been reported with ALPROLIX. If symptoms of hypersensitivity occur, patients should be advised to discontinue use of the medicinal product immediately and contact their physician. Patients should be informed of the early signs of hypersensitivity reactions including, hives, generalised urticaria, tightness of the chest, wheezing, hypotension and anaphylaxis.

In case of anaphylactic shock, standard medical treatment for shock should be implemented.

Inhibitors

After repeated treatment with human coagulation factor IX products, patients should be monitored for the development of neutralising antibodies (inhibitors) that should be quantified in Bethesda Units (BU) using appropriate biological testing.

There have been reports in the literature showing a correlation between the occurrence of a factor IX inhibitor and allergic reactions. Therefore, patients experiencing allergic reactions should be evaluated for the presence of an inhibitor. It should be noted that patients with factor IX inhibitors may be at an increased risk of anaphylaxis with subsequent challenge with factor IX.

Because of the risk of allergic reactions with factor IX products, the initial administrations of factor IX should, according to the treating physician's judgement, be performed under medical observation where proper medical care for allergic reactions could be provided.

Thromboembolism

Because of the potential risk of thrombotic complications with factor IX products, clinical surveillance for early signs of thrombotic and consumptive coagulopathy should be initiated with appropriate biological testing when administering this product to patients with liver disease, to patients post-operatively, to new-born infants, or to patients at risk of thrombotic phenomena or disseminated intravascular coagulation (DIC). The benefit of treatment with ALPROLIX in these situations should be weighed against the risk of these complications.

Cardiovascular events

In patients with existing cardiovascular risk factors, substitution therapy with factor IX products may increase the cardiovascular risk.

Catheter-related complications

If a central venous access device (CVAD) is required, risk of CVAD-related complications including local infections, bacteraemia and catheter site thrombosis should be considered.

Paediatric population

The listed warnings and precautions apply both to adults and children.

Excipient related considerations

This medicinal product contains less than 1 mmol sodium (23 mg) per vial, that is to say essentially “sodium-free”. In case of treatment with multiple vials, the total sodium content should be taken into consideration.

4.5. Interaction with other medicinal products and other forms of interaction

No interactions of ALPROLIX with other medicinal products have been reported. No interaction studies have been performed.

4.6. Fertility, pregnancy and lactation

Pregnancy and breast-feeding

Animal reproduction studies have not been conducted with ALPROLIX. A placental transfer study in mice was conducted (see section 5.3). Based on the rare occurrence of haemophilia B in women, experience regarding the use of factor IX during pregnancy and breast-feeding is not available. Therefore, factor IX should be used during pregnancy and breast-feeding only if clearly indicated.

Fertility

There are no fertility data available. No fertility studies have been conducted in animals with ALPROLIX.

4.7. Effects on ability to drive and use machines

ALPROLIX has no influence on the ability to drive and use machines.

4.8. Undesirable effects

Summary of the safety profile

Hypersensitivity or allergic reactions (which may include angioedema, burning and stinging at the infusion site, chills, flushing, generalised urticaria, headache, hives, hypotension, lethargy, nausea, restlessness, tachycardia, tightness of the chest, tingling, vomiting, wheezing) have been observed rarely and may in some cases progress to severe anaphylaxis (including shock). In some cases, these reactions have progressed to severe anaphylaxis, and they have occurred in close temporal association with development of factor IX inhibitors (see also 4.4). Nephrotic syndrome has been reported following attempted immune tolerance induction in haemophilia B patients with factor IX inhibitors and a history of allergic reaction.

Patients with haemophilia B may develop neutralising antibodies (inhibitors) to factor IX. If such inhibitors occur, the condition will manifest itself as an insufficient clinical response. In such cases, it is recommended that a specialised haemophilia centre be contacted.

There is a potential risk of thromboembolic episodes following the administration of factor IX products, with a higher risk for low purity preparations. The use of low purity factor IX products has been associated with instances of myocardial infarction, disseminated intravascular coagulation, venous thrombosis and pulmonary embolism. The use of high purity factor IX is rarely associated with thromboembolic complications.

Tabulated list of adverse reactions

Previously Treated Patients (PTPs): A total of 153 patients with severe haemophilia B were observed in phase III clinical studies and an extension study. Adverse events were monitored for a total of 561 subject-years. The total number of exposure days was 26,106 with a median of 165 (range 1 to 528) exposure days per subject.

Previously Untreated Patients (PUPs): A total of 33 patients with severe haemophilia B were observed in one clinical study. Adverse events were monitored for a total of 57.51 subject-years. The total number of exposure days was 2,233 with a median of 76 (range 1 to 137) exposure days per subject.

Table 2 presented below is according to the MedDRA system organ classification (SOC and Preferred Term Level).

Frequencies have been evaluated according to the following convention: very common (≥1/10); common (≥1/100 to <1/10); uncommon (≥1/1,000 to <1/100); rare (≥1/10,000 to <1/1,000); very rare (<1/10,000), not known (cannot be estimated from the available data). The table lists adverse reactions reported in the clinical studies and identified in post-marketing use.

Table 2: Adverse reactions reported for ALPROLIX

MedDRA System Organ Class

Adverse reactions

Frequency category

Blood and lymphatic system disorders

Factor IX inhibition

Common1

Immune system disorders

Hypersensitivity

Anaphylactic reaction

Anaphylactic shock

Common1

Not known

Not known

Metabolism and nutrition disorders

Decreased appetite

Uncommon

Nervous system disorders

Headache

Dizziness

Dysgeusia

Common

Uncommon

Uncommon

Cardiac disorders

Palpitations

Uncommon

Vascular disorders

Hypotension

Uncommon

Gastrointestinal disorders

Paraesthesia oral

Breath odour

Common

Uncommon

Renal and urinary disorders

Obstructive uropathy

Haematuria

Renal colic

Common

Uncommon

Uncommon

General disorders and administration site conditions

Injection site erythema

Fatigue

Infusion site pain

Common

Uncommon

Uncommon

1 Frequency based on occurrence in PUPs study. Both events of factor IX inhibition and hypersensitivity occurred in a single PUP in Study IV. See Description of selected adverse reactions.

Description of selected adverse reactions

Throughout the clinical study program, one patient (previously untreated) in Study IV developed a low titer factor IX inhibitor associated with hypersensitivity (see section 5.1). In post-marketing experience, factor IX inhibitor development and hypersensitivity (including anaphylaxis) have been observed.

Paediatric population

Frequency, type and severity of adverse reactions in children are expected to be similar as in adults. For extent and age characterisation of the safety database in children see section 5.1.

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme.

Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.

4.9. Overdose

The effects of higher than recommended doses of ALPROLIX have not been characterised.

🇷🇴 Known in Romania as

Medicines sold in Romania with the same active substance: Cunoscut în România ca

  • ALPROLIX 1000 UI prescriptionEFTRENONACOG ALFA · injection / infusion
  • ALPROLIX 2000 UI prescriptionEFTRENONACOG ALFA · injection / infusion
  • ALPROLIX 250 UI prescriptionEFTRENONACOG ALFA · injection / infusion
  • ALPROLIX 3000 UI prescriptionEFTRENONACOG ALFA · injection / infusion
  • ALPROLIX 500 UI prescriptionEFTRENONACOG ALFA · injection / infusion

Same active substance. The strength, the form and whether you need a prescription can differ. Always ask a pharmacist before you switch. Romanian medicines in the UK →

🇵🇱 Known in Poland as

Medicines sold in Poland with the same active substance: W Polsce znany jako

  • AlprolixEftrenonacogum alpha · injection / infusion

Same active substance. The strength, the form and whether you need a prescription can differ. Always ask a pharmacist before you switch. Polish medicines in the UK →

💬 Ask about this leaflet

Ask anything about ALPROLIX 1000 IU powder and solvent for solution for injection. The assistant answers only from this leaflet — if the leaflet does not cover it, it will say so. It does not give medical advice.

Answers come from the patient leaflet published on the electronic medicines compendium (emc). They are not medical advice. Ask a pharmacist or your GP if you are unsure. For urgent help call NHS 111, or 999 in an emergency.

Pharmacies in major towns and cities — see the list
Pharmacies by county and region — see the full list

Browse all 2,009 towns and cities →