Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.
Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.
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 Human normal immunoglobulin may still be available. Do not stop your treatment — ask your pharmacist or GP what to use instead.
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What Xembify is Xembify is a solution of human immunoglobulins (antibodies, mainly immunoglobulin G) to help your body fight infections. Xembify contains immunoglobulins that come from plasma of healthy people. Immunoglobulins help to fight infections caused by bacteria and viruses. The medicine works in exactly the same way as the immunoglobulins naturally present in human blood made by the immune system. What Xembify is used for You are using Xembify because you have abnormally low levels of immunoglobulins due to a medical condition called an immune deficiency. Xembify infusions increase the levels of immunoglobulin (antibodies), specifically immunoglobulin G (IgG) in your blood to normal levels. This medicine is for adults, children and adolescents (0 – 18 years) who do not have sufficient antibodies (replacement therapy): 1. Patients with primary immunodeficiency syndromes (PID) with an inborn lack of antibodies. 2. Hypogammaglobulinaemia (a condition implying low immunoglobulin levels in your blood) and recurrent bacterial infections in patients with chronic lymphocytic leukaemia (cancer of the blood where too many white blood cells are produced), in whom prophylactic antibiotics have failed. 3. Hypogammaglobulinaemia and recurrent bacterial infections in multiple myeloma (tumour composed of cells derived from the bone marrow). 4. Hypogammaglobulinaemia in patients after stem cell transplantation (allogeneic haematopoetic stem cell transplantation, HSCT), when you are given stem cells from another person.
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e Xembify
Do not use Xembify ● if you are allergic to human normal immunoglobulin or any of the other ingredients of this medicine (listed in section 6). ● if you have had a severe allergic reaction (such as anaphylaxis) to a human immunoglobulin. ● if you have antibodies against immunoglobulin A (IgA) in your blood. This may occur if you have IgA deficiency. Since Xembify contains IgA, you might have an allergic reaction. ● by injecting it into a blood vessel (intravenously) or into a muscle (intramuscularly). Tell your doctor, pharmacist or nurse prior to infusing Xembify if you have ever experienced any side effects from an immunoglobulin or from any of the ingredients. Warnings and precautions Talk to your doctor, pharmacist or nurse before using Xembify. •
Tell your doctor if you previously have a history of heart disease, blood vessel disease, a blood clot in a blood vessel (such as a stroke, heart attack, or pulmonary embolism), thick blood, diabetes mellitus, high blood pressure, a bleeding or clotting disorder, or if you have been immobile for some time. Tell your doctor if you take estrogen, typically as a contraceptive. You may have a greater risk of developing a blood clot after infusion of Xembify. Contact your doctor immediately if you experience shortness of breath; chest pains; pain and swelling of an arm or leg; or weakness or numbness on one side of your body. You may have a blood clot in a blood vessel.
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Contact your doctor if you experience severe headache, neck stiffness, drowsiness, fever, extreme sensitivity to light, nausea or vomiting. These side effects may come on hours or even within a few days after infusing Xembify. You may have aseptic meningitis syndrome.
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Xembify may cause kidney problems, including renal failure. Tell your doctor if you have reduced kidney function.
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Xembify may interfere with certain blood tests (serological tests). Always tell your doctor that you are being treated with Xembify prior to any blood test.
Allergic reactions Allergic reactions are rare. However you may have an allergy to immunoglobulins without knowing it. Allergic reactions such as sudden fall in blood pressure or anaphylactic shock (a sharp fall in blood pressure with other symptoms such as swelling of the throat, breathing difficulties and skin rash) are rare but they can occasionally occur even if you had no side effects to immunoglobulins in the past. You are at increased risk of allergic reactions if you have IgA deficiency with anti-IgA antibodies. Be sure to tell your doctor if you have an IgA deficiency. Xembify contains some IgA which may increase the risk of an allergic reaction. See section 4 of this leaflet (Possible side effects) for the signs and symptoms of an allergic reaction. Risk of disease transmission Xembify is purified from human plasma obtained from healthy donors. When medicinal biological products are administered, the possibility of infectious diseases due to transmission of pathogens cannot be totally excluded. However, in the case of products prepared from human plasma, the risk of transmission of pathogens is reduced by: (1) epidemiological controls on the donor population and selection of individual donors by a medical interview; (2) screening of individual donations and plasma pools for viral infection markers; and (3) manufacturing procedures with demonstrated capacity to inactivate/remove pathogens.
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Despite these measures, when medicines prepared from human blood or plasma are administered, the possibility of passing on infection cannot be totally excluded. This also applies to any unknown or emerging viruses or other types of infections. The measures taken are considered effective for enveloped viruses such as human immunodeficiency virus (HIV), hepatitis B virus and hepatitis C virus and for the non-enveloped hepatitis A virus. The measures taken may be of limited value against non-enveloped viruses such as parvovirus B19. Immunoglobulins have not been associated with hepatitis A or parvovirus B19 infections, possibly because the antibodies against these infections, which are contained in the product, are protective. It is strongly recommended that every time you receive a dose of this medicine, the name and batch number of the medicine (stated on the label and carton after lot) are recorded in order to maintain a record of the batches used. Children and adolescents The warnings and precautions apply to adults, children and adolescents. Other medicines and Xembify Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. Always infuse Xembify by itself without mixing in any other medicine. If you are going to be vaccinated, tell the doctor that you are being treated with Xembify. Xembify may interfere with some vaccines (live virus vaccines) such as measles, mumps, rubella and chicken pox. You may have to wait up to 3 months after receiving Xembify before being vaccinated. For measles vaccine, you may have to wait for up to 1 year. These interactions apply to children, adults, and the elderly. Pregnancy, breast-feeding and fertility 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. Xembify has not been studied in pregnant women or breast-feeding women, and therefore your doctor or pharmacist will guide you. Clinical experience with immunoglobulins suggests that no harmful effects on the course of pregnancy, or on the foetus and the baby are to be expected. If you are breastfeeding, the immunoglobulins in Xembify can also be found in your breast milk. These may protect your baby from certain infections. Clinical experience with immunoglobulins suggests that no harmful effects on fertility are expected. Driving and using machines Your ability to drive and operate machines may be impaired by some adverse reactions, such as dizziness, associated with Xembify. If you experience adverse reactions during treatment, wait for these to resolve before driving or operating machines. 3.
Xembify
Always use this medicine exactly as your doctor has told you. Check with your doctor if you are not sure. Xembify has to be infused under the skin (subcutaneous or SC administration). Treatment with Xembify will be started by your doctor or nurse. Do not begin treatment with Xembify at home until you have received complete instructions. 3
Dose The recommended dose and dosing schedule are established by your doctor. Your doctor will calculate the correct dose for you based on your body weight, any previous treatment you may have received and your response to treatment. Always use this medicine exactly as described in this leaflet or as your doctor, pharmacist or nurse has told you. Check with them if you are not sure. Your first dose may be what is called a "loading dose" which is meant to rapidly increase the immunoglobulin levels in your blood. Your doctor will determine whether you need a "loading dose" (for adults or children) of at least 1 to 2.5 mL/kg of body weight. You may receive this loading dose divided over several days. You will be given Xembify on a regular basis from daily to once every 2 weeks; the cumulative dose per month will be about 1.5 to 5 mL/kg of body weight. Your doctor may adjust your dose depending on your response to treatment. Do not change this dose or the time interval to the next dose without talking to your doctor first. If you think you should receive a different dose or you want to modify your dosing schedule, talk to your doctor first. Contact your doctor if you miss a dose. You will need to have routine blood tests to measure the level of immunoglobulin in your blood. Discuss the schedule with your doctor. There is no difference in the dose for adults, including the elderly (65 years of age and older), as for children and infants, since the amount of Xembify infused is based on body weight. Method of administration You will receive Xembify by a slow infusion under the skin into fatty tissue (a subcutaneous infusion). Xembify will be delivered using a pump or injector. Subcutaneous infusion for home treatment must be initiated and monitored by a healthcare professional experienced in guiding patients for home treatment. You (or your caregiver) must be instructed in:
You may infuse simultaneously in more than one site as long as they are at least 5 cm apart. Adults can split the dose between multiple sites, especially if the volume is greater than 30 mL. There is no limit to the number of sites you may use. You may use more than one pump to do this. Instructions for use Subcutaneous infusion for home treatment must be initiated and monitored by a health care professional experienced in the guidance of patients for home treatment. Infusion pumps appropriate for subcutaneous administration of immunoglobulins can be used. The patient or a caregiver must be instructed in the use of an infusion pump, the infusion techniques, the keeping of treatment diary, recognition of and measures to be taken in case of severe adverse reactions. Follow the steps below and use aseptic technique to administer Xembify. Prior to use, allow the solution to come to room or body temperatures (20 – 37 °C). This can take 60 minutes or longer. Do not apply heat or place in the microwave. Step 1: Assemble supplies Gather the Xembify vial(s), ancillary supplies, sharps container, patient's treatment diary/logbook, and the infusion pump(s). Step 2: Clean surface Set up your infusion area on a clean, flat, non-porous surface, such as a kitchen counter. Avoid using porous surfaces such as wood. Clean the surface with an alcohol wipe using a circular motion from the center outward. Step 3: Wash hands Wash and dry your hands thoroughly before using Xembify. Your healthcare provider may recommend that you use antibacterial soap or that you wear gloves.
Step 4: Check vials The liquid in the vial should be clear to slightly opalescent, and colourless or pale yellow or light brown. Do not use the vial if: • •
the solution is cloudy or discoloured. The solution should be clear to slightly opalescent, and colourless or pale yellow or light brown. the protective cap is missing, or there is any evidence of tampering. Tell your healthcare provider immediately. 5
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the expiration date has passed.
Step 5: Remove the protective cap Remove the protective cap from the vial to expose the middle of the stopper. Wipe the stopper with alcohol and allow to dry.
Step 6: Transfer Xembify from vial(s) to syringe Do not allow your fingers or other objects to touch the inner stem of the plunger, the syringe tip, or other areas that can touch the Xembify solution. Make sure needles are capped until used and that needles and syringes stay on the clean area created in Step 2. This is called "aseptic technique" to prevent germs from getting into the Xembify. Using aseptic technique, attach each needle to the syringe tip.
Step 7: Prepare the syringe and draw Xembify solution into syringe Remove cap from needle. Pull the syringe plunger back to the level matching the amount of Xembify to be withdrawn from the vial. Place the Xembify vial on a clean flat surface and insert the needle into the center of the vial stopper. Inject air into the vial. The amount of air should match the amount of Xembify to be withdrawn. Turn the vial upside down and withdraw the correct amount of Xembify. If multiple vials are required to get the correct dose, repeat Step 4-7. Administer immediately after transferring Xembify from the vial to a syringe.
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Step 8: Prepare the infusion pump Follow the pump manufacturer's instructions for preparing the infusion pump, administration tubing and Y-site connection tubing, if needed. Prime the administration tubing with Xembify to take out any air left in the tubing or needle. To prime, hold the syringe in one hand and the administration tubing's capped needle in the other. Gently squeeze on the plunger until you see a drop of Xembify come out of the needle. Step 9: Select the number and location of infusion sites Select one or more infusion sites as directed by your healthcare provider. The number and location of infusion sites depends on the volume of the total dose. Suitable sites for infusion are: abdomen, thighs, upper arms and the side of the hip. Avoid: bony areas, visible blood vessels, scars, and any areas of inflammation (irritation) or infection. Rotate sites between future infusions.
Step 10: Prepare the infusion site Wipe the infusion site(s) with a sterile alcohol wipe beginning at the center of each infusion site and moving outward in circular motion. Allow the infusion site(s) to dry (at least 30 seconds). Before infusion, sites should be clean, dry, and at least 5 cm apart.
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Step 11: Insert the needle Grasp the skin between two fingers (pinch at least 2.5 cm of skin) and insert the needle at a 90-degree angle into the tissue underneath the skin or subcutaneous tissue.
Step 12: Make sure the needle is not in a blood vessel After inserting each needle into tissue (and before your infusion), make sure that a blood vessel has not been accidentally entered. To do this, attach a sterile syringe to the end of the primed administration tubing. Pull back on the syringe plunger and watch for any blood flowing back into administration tubing. If you see any blood, remove and discard the needle and administration tubing.
Repeat priming and needle insertion steps using a new needle, administration tubing and a new infusion site. Secure the needle in place by applying sterile gauze or transparent dressing over the site.
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Step 13: Repeat for other sites, as needed Step 14: Infuse Xembify Infuse Xembify as soon as possible after it is prepared. Follow the manufacturer's instructions for filling the tubing and using the infusion pump. Step 15: After infusion Follow manufacturer's instructions to turn off the pump. Undo and discard any dressing or tape. Gently remove the inserted needle(s) or catheter(s). Discard any unused solution in an appropriate waste container as instructed. Discard any used administration equipment in an appropriate waste container. Store your supplies in a safe place. Follow manufacturer's instructions to care for the syringe pump. Step 16: Record each infusion Remove the peel-off label with the product lot number from the Xembify vial and use this to complete the patient record. Include information about each infusion such as: • • • • •
the time and date, the dose, lot number(s), infusion sites, and any reactions.
Remember to bring your journal with you when you visit your doctor. Your doctor may ask to see your treatment diary/logbook. Tell your doctor about any problems you have during your infusions. Call your healthcare provider for medical advice about side effects. Use in elderly patients The dose for elderly patients is not considered to be different from that in patients 18 to 65 years of age.
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Use in children and adolescents The dose in children and adolescents (0 – 18 years) is not different to that of adults. In infants and children infusion site may be changed every 5 to 15 mL. If you use more Xembify than you should Contact your doctor for instructions. If you forget to use Xembify Do not take a double dose to make up for a forgotten dose. Contact your doctor for instructions. If you have any further questions on the use of this medicine, ask your doctor. 4.
Like all medicines, this medicine can cause side effects, although not everybody gets them. Rarely human normal immunoglobulins may cause a sudden fall in blood pressure and, in isolated cases, anaphylactic shock, even when the patient has shown no hypersensitivity to previous administration. Signs or symptoms of these rare allergic reactions include: •
feeling light headed, dizzy or faint
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skin rash and itchiness, swelling in the mouth or throat, difficulty breathing, wheezing
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abnormal heart rate, chest pain, blueness of lips or fingers and toes
If you notice any signs of allergic reaction or anaphylactic-type reaction during infusion of Xembify, immediately stop the infusion and contact your doctor or go to the nearest hospital. Please see Section 2 of this leaflet (Warnings and precautions). If you notice any of these signs during the infusion of Xembify when it is being given by a healthcare professional, tell your doctor or nurse immediately. He or she will decide whether to slow down the infusion or stop the infusion completely. Local reactions at infusion sites, such as swelling, soreness, redness, induration (hard lump), local heat, itching, bruising and rash, may occur. Xembify may occassionally cause chills, headache, dizziness, fever, vomiting, allergic reactions, feeling sick (nausea), joint pain, low blood pressure and moderate low back pain. The following side effect is very common with Xembify (may affect 1 or more people in 10): ● Local infusion site reaction The following side effects are common with Xembify (may affect 1 or more people in 100): ● Headache ● Arthralgia (pain in joints) ● Back pain ● Rhinitis (runny nose, sneezing, and stuffiness) ● Diarrhoea ● Nausea ● Pyrexia (fever) ● Blood immunoglobulin G decreased ● Pruritus (itching) ● Papule (small raised area of skin)
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Postmarketing side effects The following adverse reactions have been identified and reported during the postmarketing use of Xembify (all non-serious): dyspnoea (shortness of breath), fatigue, pain, nausea, headache and local infusion site reaction such as erythema (redness) and swelling. It is not always possible to reliably estimate the frequency of these reactions. Reporting of side effects If you get 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 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. By reporting side effects you can help provide more information on the safety of this medicine. 5.
Xembify
Keep this medicine out of the sight and reach of children. •
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Store in a refrigerator (2 oC – 8 °C). o Xembify may be stored at temperatures not to exceed 25 °C for up to 6 months any time prior to the expiration date. o On the day product is removed from the refrigerator, write in the space provided on the carton for "Discard Date" either the date 6 months from now or the expiry date imprinted on the carton flap, whichever is sooner. o If stored at room temperatures, do not return the product to the refrigerator. Use the product by the "Discard Date" or discard it. Do not freeze. Keep the vial in the outer carton in order to protect from light. Administer as soon as possible after Xembify is transferred from the vial into a syringe.
Do not use this medicine after the expiry date which is stated on the label and carton. Do not use this medicine if you notice it is discoloured, cloudy, has deposits, or if it has been frozen. 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. 6.
What Xembify contains ● The active substance is human normal immunoglobulin (SCIg), one mL contains 200 mg of human normal immunoglobulin, of which at least 98% is IgG. The percentage of IgG subclasses is approximately 62% IgG1, 30% IgG2, 4.3% IgG3 and 3.2% IgG4. It contains some IgA (not more than 160 micrograms/mL). ● The other ingredients are glycine (E 640), polysorbate 80 (E 433), and water for injections. What Xembify looks like and contents of the pack Xembify is a solution for subcutaneous injection. The solution is clear to slightly opalescent and colourless or pale yellow or light brown. Xembify is packaged in a carton and is contained in a clear glass vial with a stopper, aluminum overseal, plastic top and shrink band that guarantee the intactness of packaging.
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Xembify is supplied in pack sizes of 1 or 10 vials containing 1 g human normal immunoglobulin in 5 mL solution for subcutaneous injection 1, 10 or 20 vials containing 2 g human normal immunoglobulin in 10 mL solution for subcutaneous injection 1 or 20 vials containing 4 g human normal immunoglobulin in 20 mL solution for subcutaneous injection 1 or 10 vials containing 10 g human normal immunoglobulin in 50 mL solution for subcutaneous injection Each carton contains 1, 10 or 20 vials Xembify and 1 Patient Information Leaflet. Not all pack sizes may be marketed. Marketing Authorisation Holder and Manufacturer Instituto Grifols, S.A. Can Guasc, 2 – Parets del Vallès 08150 Barcelona – Spain This leaflet was last revised in 05/2024. Other sources of information Detailed information on this medicine is available on the website of https://www.medicines.org.uk/emc#gref
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Xembify 200 mg/mL solution for subcutaneous injection comes as injection containing 200mg/ml. Always follow the dose your doctor or pharmacist has given you, and read the leaflet that comes with the medicine.
The active substance in Xembify 200 mg/mL solution for subcutaneous injection is human normal immunoglobulin.
Medicines with the same active substance, strength and form include: Cuvitru 200 mg/ml solution for subcutaneous injection, Hizentra 200 mg/ml solution for subcutaneous injection, Hizentra 200 mg/ml solution for subcutaneous injection in pre-filled syringe. They are interchangeable only if your prescriber or pharmacist says so.
This leaflet reproduces the patient information leaflet approved for Xembify 200 mg/mL solution for subcutaneous injection, as published on the electronic medicines compendium (emc). The version printed inside your medicine’s packaging is the one that applies to you.
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.
The text above reproduces the patient information leaflet approved for this medicine, restructured for easier reading.
Replacement therapy in adults, children and adolescents (0-18 years) in:
• Primary immunodeficiency syndromes (PID) with impaired antibody production (see section 4.4).
• Hypogammaglobulinaemia and recurrent bacterial infections in patients with chronic lymphocytic leukaemia (CLL) in whom prophylactic antibiotics have failed or are contra-indicated.
• Hypogammaglobulinaemia and recurrent bacterial infections in multiple myeloma (MM) patients.
• Hypogammaglobulinaemia in patients pre- and post- allogeneic haematopoietic stem cell transplantation (HSCT).
Replacement therapy should be initiated and monitored under the supervision of a physician experienced in the treatment of immunodeficiency.
Posology
The dose and dose regimen are dependent on the indication.
Replacement therapy
The product should be administered via the subcutaneous route.
In replacement therapy the dose may need to be individualised for each patient dependent on the pharmacokinetic and clinical response. The following dose regimens are given as a guideline.
The dose regimen should achieve a trough level of IgG (measured before the next infusion) of at least 5 to 6 g/L and aim to be within the reference interval of serum IgG for age. A loading dose of at least 0.2 to 0.5 g/kg (1 to 2.5 mL/kg) body weight (bw) may be required. This may need to be divided over several days, with a maximal daily dose of 0.1 to 0.15 g/kg bw.
After steady state IgG levels have been attained, maintenance doses are administered at repeated intervals (approximately once per week) to reach a cumulative monthly dose of the order of 0.4 - 0.8 g/kg bw. Each single dose may need to be injected at different anatomic sites.
Trough levels should be measured and assessed in conjunction with the incidence of infection. To reduce the rate of infection, it may be necessary to increase the dose and aim for higher trough levels.
Elderly
As the dose is given by body weight and adjusted to the clinical outcome of the above mentioned conditions, the dose in the elderly population is not considered to be different from that in patients 18 to 65 years of age.
In clinical studies Xembify was evaluated in 5 subjects with PID >65 years of age and no specific dose adjustments were necessary to achieve the desired serum IgG levels.
Paediatric population
The posology in children and adolescents (0-18 years) is not different to that of adults as the posology for each indication is given by body weight and adjusted to the clinical outcome in replacement therapy indications.
Xembify was evaluated in 43 paediatric subjects with PID aged 2 to 16 years (inclusive), which included 28 subjects 12 years of age or younger. No paediatric-specific dose requirements were necessary to achieve the desired serum IgG levels.
Method of administration
For subcutaneous use only.
Subcutaneous infusion for home treatment must be initiated and monitored by a health care professional experienced in the guidance of patients for home treatment. Infusion pumps appropriate for subcutaneous administration of immunoglobulins can be used. The patient or a caregiver must be instructed in the use of an infusion pump, the infusion techniques, the keeping of treatment diary, recognition of and measures to be taken in case of severe adverse reactions.
Xembify may be injected into sites such as abdomen, thigh, upper arm, and lateral hip.
The recommended initial infusion rate depends on the individual needs of the patient. Adjustment of the infusion rate and infusion volume per site is based on subject tolerablility.
It is recommended to use an initial administration speed of 10 mL/hr/infusion site. If well tolerated (see section 4.4), the rate of administration may be increased at intervals of at least 10 minutes to a maximum of 20 mL/hr/infusion site for paediatric patients and to a maximum of 25 mL/hr/infusion site for adults for the initial two infusions.
If well tolerated (see section 4.4 ) for two infusions, the infusion speed can gradually be increased to 35 mL/hr/site.
More than one pump can be used simultaneously. The amount of product infused into a particular site varies. In infants and children infusion sites may be changed every 5-15 mL. In adults doses over 30 mL may be divided according to patient preference. There is no limit to the number of infusion sites. Infusion sites should be at least 5 cm apart. The infusion sites should be rotated and avoid bony prominences.
Hypersensitivity to the active substance or to any of the excipients listed in section 6.1 (see section 4.4). Xembify must not be given intravascularly or intramuscularly.
Patients who have had an anaphylactic or severe systemic reaction to the administration of human immune globulin.
IgA deficient patients with antibodies against IgA and history of hypersensitivity to human immune globulin treatment.
Traceability
In order to improve the traceability of biological medicinal products, the name and the batch number of the administered product should be clearly recorded.
If Xembify is accidentally administered into a blood vessel patients could develop shock.
The recommended infusion rate given under section 4.2 must be closely followed. Patients must be closely monitored and carefully observed for any symptoms throughout the infusion period.
Certain adverse reactions may occur more frequently in patients who receive human normal immunoglobulin for the first time or, in rare cases, when the human normal immunoglobulin product is switched or when there has been a long interval since the previous infusion.
Potential complications can often be avoided by:
• initially injecting the product slowly (not to exceed 25 mL/hr/site);
• ensuring that patients are carefully monitored for any symptoms throughout the infusion period. In particular, patients naïve to human normal immunoglobulin, patients switched from an alternative immunoglobulin product or when there has been a long interval since the previous infusion should be monitored during the first infusion and for the first hour after the first infusion, in order to detect potential adverse signs.
All other patients should be observed for at least 20 minutes after administration.
In case of adverse reaction, either the rate of administration must be reduced or the infusion stopped. The treatment required depends on the nature and severity of the adverse reaction. Allergic or anaphylactic type reactions require immediate discontinuation.
In case of shock, standard medical treatment for shock should be implemented.
Hypersensitivity
True allergic reactions are rare. They can particularly occur in patients with anti-IgA antibodies who should be treated with particular caution. Patients with anti-IgA antibodies, in whom treatment with subcutaneous IgG products remains the only option, should be treated with Xembify only under close medical supervision.
Rarely, human normal immunoglobulin can induce a fall in blood pressure with anaphylactic reaction, even in patients who had tolerated previous treatment with human normal immunoglobulin.
Thromboembolism
Arterial and venous thromboembolic events including myocardial infarction, stroke, deep venous thrombosis and pulmonary embolism have been associated with the use of immunoglobulins. Patients should be sufficiently hydrated before use of immunoglobulins. Caution should be exercised in patients with preexisting risk factors for thrombotic events (such as use of estrogens, advanced age, hypertension, diabetes mellitus and a history of vascular disease or thrombotic episodes, patients with acquired or inherited thrombophilic disorders, patients with prolonged periods of immobilization, severely hypovolemic patients, patients with diseases which increase blood viscosity).
Patients should be informed about first symptoms of thromboembolic events including shortness of breath, pain and swelling of a limb, focal neurological deficits and chest pain and should be advised to contact their physician immediately upon onset of symptoms.
Aseptic Meningitis Syndrome (AMS)
Aseptic meningitis syndrome has been reported to occur in association with subcutaneous immunoglobulin treatment; the symptoms usually begin within several hours to 2 days following treatment. AMS may occur more in females than in males. AMS is characterised by the following signs and symptoms: severe headache, neck stiffness, drowsiness, fever, photophobia, nausea, and vomiting. Patients exhibiting signs and symptoms of AMS should receive a thorough neurological examination, including CSF studies, to rule out other cases of meningitis. Discontinuation of immunoglobulin treatment may result in remission of AMS within several days without sequelae.
Patients should be informed about first symptoms of AMS. AMS may occur more frequently in the context of high doses and/or rapid infusion.
Renal dysfunction/failure
Severe renal adverse reactions have been reported in patients receiving immune globulin treatment, particularly those products containing sucrose (Xembify does not contain sucrose). These include acute renal failure, acute tubular necrosis, proximal tubular nephropathy and osmotic nephrosis. Factors that increase the risk of renal complications include, but are not limited to preexisting renal insufficiency, diabetes mellitus, hypovolemia, concomitant nephrotoxic medicinal products, age over 65, sepsis, hyperviscosity and paraproteinemia.
Patients with renal impairment should be monitored as well, in particular patients with preexisting renal insufficiency or risk of acute renal failure.
Interference with serological testing
After injection of immunoglobulin the transitory rise of the various passively transferred antibodies in the patient's blood may result in misleading positive results in serological testing.
Passive transmission of antibodies to erythrocyte antigens, e.g. A, B, D may interfere with some serological tests for red cell antibodies for example the direct antiglobulin test (DAT, direct Coombs' test). In case of high doses or non-O blood group haemolysis can occur, thus monitoring is recommended.
Transmissible agents
Standard measures to prevent infections resulting from the use of medicinal products prepared from human blood or plasma include selection of donors, screening of individual donations and plasma pools for specific markers of infection and the inclusion of effective manufacturing steps for the inactivation / removal of viruses. Despite this, when medicinal products prepared from human blood or plasma are administered, the possibility of transmitting infective agents cannot be totally excluded. This also applies to unknown or emerging viruses and other pathogens.
The measures taken are considered effective for enveloped viruses such as human immunodeficiency virus (HIV), hepatitis B virus (HBV) and hepatitis C (HCV) virus, and for the non-enveloped hepatitis A virus (HAV). The measures taken may be of limited value against non-enveloped viruses such as parvovirus B19.
There is reassuring clinical experience regarding the lack of hepatitis A or parvovirus B19 transmission with immunoglobulins and it is also assumed that the antibody content makes an important contribution to the viral safety.
It is strongly recommended that every time that Xembify is administered to a patient, the name and batch number of the product are recorded in order to maintain a link between the patient and the batch of the product.
Paediatric population
The listed warnings and precautions apply to both adults and children.
Live attenuated virus vaccines
Immunoglobulin administration may impair for a period of at least 6 weeks and up to 3 months the efficacy of live attenuated virus vaccines such as measles, rubella, mumps and varicella. After administration of this medicinal product, an interval of 3 months should elapse before vaccination with live attenuated virus vaccines. In the case of measles, this impairment may persist for up to 1 year.
Therefore, patients receiving measles vaccine should have their antibody status checked.
Paediatric population
The listed interactions apply to both adults and the paediatric population.
Elderly
The listed interactions apply to the elderly.
Pregnancy
The safety of this medicinal product for use in human pregnancy has not been established in controlled clinical trials and therefore should only be given with caution to pregnant women and breast-feeding mothers.
Immunoglobulin products have been shown to cross the placenta, increasingly during the third trimester. Clinical experience with immunoglobulins suggests that no harmful effects on the course of pregnancy, or on the foetus and the neonate are to be expected.
Breast-feeding
Immunoglobulins are excreted into the milk and may contribute to protecting the neonate from pathogens which have a mucosal portal of entry.
Fertility
Clinical experience with immunoglobulins suggests that no harmful effects on fertility are to be expected.
Xembify has minor influence on the ability to drive and use machines, e.g. dizziness (see section 4.8). Patients who experience adverse reactions during treatment should wait for these to resolve before driving or operating machines.
Summary of the safety profile
Adverse reactions such as chills, headache, dizziness, fever, vomiting, allergic reactions, nausea, arthralgia, low blood pressure and moderate low back pain may occur occasionally.
Rarely human normal immunoglobulins may cause a sudden fall in blood pressure and, in isolated cases, anaphylactic shock, even when the patient has shown no hypersensitivity to previous administration.
Local reactions at infusion sites: swelling, soreness, redness, induration, local heat, itching, bruising and rash, may frequently occur.
For safety information with respect to transmissible agents, see section 4.4.
Tabulated list of adverse reactions
The safety of Xembify administered subcutaneously was evaluated in two prospective, open-label, phase 3, non-controlled multicentre studies in 110 male or female subjects, ages 2-72 years with primary immune deficiency (PID) previously treated with IVIg/SCIg. Forty-nine (49) subjects were in the North American study and 61 subjects in the European study.
Across both studies eight subjects discontinued Xembify due to adverse reactions, all were mild or moderate in severity except for aortic valve incompetence due to congenital anomaly.
The table 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). Within each frequency grouping the adverse reactions are presented in the order of decreasing seriousness (all non-serious).
Frequency of Adverse Reactions (ADRs) with Xembify in 1% or more of Subjects and per infusion in the clinical studies
MedDRA System Organ Class (SOC)
Adverse reaction
Frequency per subjecta
(N=110 subjects)
Frequency per infusionb
(N=4098 infusions)
Infections and infestations
Rhinitis
3 (2.7%) common
4 (0.0010) uncommon
Nervous system disorders
Headache
4 (3.6%) common
4 (0.0010) uncommon
Gastrointestinal disorders
Diarrhoea
3 (2.7%) common
3 (0.0007) rare
Nausea
2 (1.8%) common
2 (0.0005) rare
Skin and subcutaneous tissue disorders
Papule
2 (1.8%) common
2 (0.0005) rare
Pruritus
2 (1.8%) common
2 (0.0005) rare
Musculoskeletal and connective tissue disorders
Arthralgia
3 (2.7%) common
3 (0.0007) rare
Back pain
3 (2.7%) common
3 (0.0007) rare
General disorders and administration site conditions
Local infusion site reaction
35 (31.8%) very common
125 (0.0305) common
Pyrexia
2 (1.8%) common
4 (0.0010) uncommon
Investigations
Blood immunoglobulin G decreased
2 (1.8%) common
2 (0.0005) rare
a The frequency per subject is calculated using the number of subjects with ADRs excluding infections for which there was at least a possibility of causal relationship with Xembify divided by the total number of subjects.
b The frequency per infusion is calculated using the number of infusions associated with ADRs excluding infections for which there was at least a possibility of causal relationship with Xembify divided by the total number of infusions.
Postmarketing experience
The following adverse reactions have been identified and reported during the postmarketing use of Xembify: local infusion site reaction such as erythema and swelling, dyspnoea, fatigue, pain, nausea and headache. It is not always possible to reliably estimate the frequency of these reactions.
Paediatric population
Frequency, type and severity of adverse reactions in paediatric population are expected to be the same as in adults.
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.
Consequences of an overdose are not known.
Ask anything about Xembify 200 mg/mL solution for subcutaneous 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.
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