英文药名:Nuwiq(human coagulation factor VIII recombinant DNA, simoctocog alfa) 中文药名:注射用抗血友病因子/人凝血因子VIII(重组)冻干粉 生产厂家:Octapharma USA,Inc
Nuwiq 250 IU 500 IU 1000 IU 2000 IU powder and solvent for solution for injection
For long-term prophylaxis against bleeding in patients with severe haemophilia A, the usual doses are 20 to 40 IU of factor VIII per kg body weight at intervals of 2 to 3 days. In some cases, especially in younger patients, shorter dosage intervals or higher doses may be necessary. During the course of treatment, appropriate determination of factor VIII levels is advised to guide the dose to be administered and the frequency of repeated infusions. In the case of major surgical interventions in particular, precise monitoring of the substitution therapy by means of coagulation analysis (plasma factor VIII activity) is indispensable. Individual patients may vary in their response to factor VIII, demonstrating different half-lives and recoveries. Paediatric population The posology is the same in adults and children, however, shorter dose intervals or higher doses may be necessary for children. Currently available data are described in sections 4.8, 5.1 and 5.2. No data are available in children below the age of 2 years. Method of administration Intravenous use. It is recommended that not more than 4 ml per minute be administered. 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 Hypersensitivity As with any intravenous protein product, allergic type hypersensitivity reactions are possible. Nuwiq contains traces of human host cell proteins other than factor VIII. 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 shock, standard medical treatment for shock should be implemented. Inhibitors The formation of neutralising antibodies (inhibitors) to factor VIII is a known complication in the management of individuals with haemophilia A. These inhibitors are usually IgG immunoglobulins directed against factor VIII procoagulant activity, which are quantified in Bethesda Units (BU) per ml of plasma using the modified assay. The risk of developing inhibitors is correlated to the exposure to factor VIII, this risk being highest within the first 20 exposure days. Rarely, inhibitors may develop after the first 100 exposure days. Cases of recurrent inhibitor (low titre) have been observed after switching from one factor VIII product to another in previously treated patients with more than 100 exposure days who have a previous history of inhibitor development. Therefore, it is recommended to monitor patients carefully for inhibitor occurrence following any product switch. In general, all patients treated with coagulation factor VIII products should be carefully monitored for the development of inhibitors by appropriate clinical observations and laboratory tests. If the expected factor VIII activity plasma levels are not attained, or if bleeding is not controlled with an appropriate dose, testing for factor VIII inhibitor presence should be performed. In patients with high levels of inhibitor, factor VIII therapy may not be effective and other therapeutic options, such as immune tolerance induction (ITI), should be considered. Management of such patients should be directed by physicians with experience in the care of haemophilia and factor VIII inhibitors. 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. It is strongly recommended that every time that Nuwiq 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 medicinal product. Paediatric population The listed warnings and precautions apply both to adults and children. Excipient related considerations (sodium content) This medicinal product contains less than 1 mmol sodium (23 mg) per vial. However depending on the body weight and posology, the patient could receive more than one vial. This should be taken into consideration by patients on a controlled sodium diet. 4.5 Interaction with other medicinal products and other forms of interaction No interaction studies have been performed with Nuwiq. 4.6. Fertility, pregnancy and lactation Animal reproduction studies have not been conducted with Nuwiq. Based on the rare occurrence of haemophilia A in women, experience regarding the use of factor VIII during pregnancy and breast feeding is not available. Therefore, Nuwiq should be used during pregnancy and breast-feeding only if clearly indicated. There are no fertility data available. 4.7 Effects on ability to drive and use machines Nuwiq 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 angiooedema, 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 rarely been observed with FVIII preparations and may in some cases progress to severe anaphylaxis (including shock). Patients with haemophilia A may develop neutralising antibodies (inhibitors) to factor VIII. 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. Tabulated list of adverse reactions During clinical studies with Nuwiq in previously treated paediatric (2 to 11 years, n = 58), adolescent (12 to 17 years, n = 3) and adult patients (n = 74) with severe haemophilia A, a total of 8 adverse drug reactions (ADRs) (6 in adults, 2 in children) were reported in 5 patients (3 adults, 2 children). Table 1 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). Within each frequency grouping, adverse reactions are presented in order of decreasing seriousness. Table 1. Frequency of occurring per patient of adverse drug reactions (ADRs) in clinical trials in 135 previously treated patients with severe haemophilia A
Description of selected adverse reactions A non-neutralizing anti-Factor VIII antibody was detected in one adult patient (see Table 1). The sample was tested by the central laboratory at eight dilutions. The result was positive only at dilution factor 1 and the antibody titre was very low. Inhibitory activity, as measured by the modified Bethesda assay, was not detected in this patient. Clinical efficacy and in-vivo recovery of Nuwiq was not affected in this patient. Paediatric population Frequency, type and severity of adverse reactions in children are assumed 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 national reporting system. United Kingdom Yellow Card Scheme Website: www.mhra.gov.uk/yellowcard 4.9 Overdose No cases of overdose have been reported. 5. Pharmacological properties 5.1 Pharmacodynamic properties Pharmacotherapeutic group: Antihaemorrhagics: blood coagulation factor VIII, ATC code: B02BD02. The factor VIII/von Willebrand factor complex consists of two molecules (factor VIII and von Willebrand factor) with different physiological functions. When infused into a haemophiliac patient, factor VIII binds to von Willebrand factor in the patient's circulation. Activated factor VIII acts as a cofactor for activated factor IX, accelerating the conversion of factor X to activated factor X. Activated factor X converts prothrombin into thrombin. Thrombin then converts fibrinogen into fibrin and a clot can be formed. Haemophilia A is a sex-linked hereditary disorder of blood coagulation due to decreased levels of factor VIII:C and results in profuse bleeding into joints, muscles or internal organs, either spontaneously or as results of accidental or surgical trauma. By replacement therapy the plasma levels of factor VIII are increased, thereby temporarily enabling a correction of the factor VIII deficiency and correction of the bleeding tendencies. The immunogenicity of Nuwiq was evaluated in clinical trials in 135 previously treated patients with severe haemophilia A (74 adult and 61 paediatric patients). None of the patients developed inhibitors. In a clinical study in 32 adult patients with severe haemophilia A, the median consumption of Nuwiq for prophylaxis was 468.7 IU/kg/month. The median dose to treat break-through bleeding episodes was 33.0 IU/kg in these patients who were on prophylaxis. In another clinical study, 22 adult patients were treated on demand. In total 986 bleeding episodes were treated with a median dose of 30.9 IU/kg. In general, minor bleeds required slightly lower, and more severe bleeds required up to three-fold higher median doses. Paediatric population Data have been obtained in 29 previously treated children between 2 and 5 years of age, 31 children between 6 and 12 years of age and one adolescent of 14 years. The median dose per prophylactic infusion was 37.8 IU/kg. Twenty patients used median doses of more than 45 IU/kg. The median consumption of Nuwiq for prophylaxis per month was 521.9 IU/kg. A higher median dose of Nuwiq was required to treat bleedings in children (43.9 IU/kg) than in adults (33.0 IU/kg), and a higher median dose was required to treat moderate to major than minor bleedings (78.2 IU/kg vs. 41.7 IU/kg). Younger children in general required higher median doses (6-12 years: 43.9 IU/kg; 2-5 years: 52.6 IU/kg). The European Medicines Agency has deferred the obligation to submit the results of studies with Nuwiq in one or more subsets of the paediatric population in treatment of Haemophilia A (congenital Factor VIII deficiency) (see section 4.2 for information on paediatric use). 5.2 Pharmacokinetic properties Table 2. PK parameters for Nuwiq (Dose: 50 IU/kg) in adult previously treated patients (age 18-65 years) with severe haemophilia A (n = 20)
IVR = Incremental in vivo recovery, CL = Clearance, SD = Standard deviation Table 3. PK parameters for Nuwiq (Dose: 50 IU/kg) in previously treated children aged 6 to 12 years with severe haemophilia A (n = 12)
IVR = Incremental in vivo recovery, CL = Clearance, SD = Standard deviation Table 4. PK parameters for Nuwiq (Dose: 50 IU/kg) in previously treated children aged 2 to 5 years with severe haemophilia A (n = 13)
IVR = Incremental in vivo recovery, CL = Clearance, SD = Standard deviation Paediatric population As known from the literature, recovery and half-life was lower in young children than in adults and clearance higher, which may be due in part to the known higher plasma volume per kilogram body weight in younger patients. Weight adjusted subgroups Table 5. Weight-adjusted PK parameters for Nuwiq (Dose: 50 IU/kg) in adult previously treated patients (age 18-65 years) with severe haemophilia A (n = 20)
5.3 Preclinical safety data In preclinical studies, Nuwiq was used to safely and effectively restore haemostasis in dogs with haemophilia. Toxicology studies showed that local intravenous administration and systemic exposure were well tolerated in laboratory animals (rats and cynomolgus monkeys). Specific studies with long-term repeated administration such as reproduction toxicity, chronic toxicity, and carcinogenicity were not performed with Nuwiq due to the immune response to heterologous proteins in all non-human mammalian species. No studies were performed on the mutagenic potential of Nuwiq. Ex vivo evaluations using a commercial assay kit to quantify T cell response to protein therapeutics indicate a low risk of immunogenicity. 6. Pharmaceutical particulars 6.1 List of excipients Powder: Sucrose Sodium chloride Calcium chloride dihydrate Arginine hydrochloride Sodium citrate dihydrate Poloxamer 188 Solvent: Water for injections 6.2 Incompatibilities In the absence of compatibility studies, this medicinal product must not be mixed with other medicinal products. Only the provided injection sets should be used because treatment failure can occur as a consequence of human coagulation factor VIII adsorption to the internal surfaces of some injection equipment. 6.3 Shelf life 2 years After reconstitution, chemical and physical in-use stability has been demonstrated for 24 hours when stored at room temperature. From a microbiological point of view, the product should be used immediately after reconstitution. If not used immediately, in-use storage times and conditions prior to use are the responsibility of the user. Keep the reconstituted solution at room temperature. Do not refrigerate after reconstitution. 6.4 Special precautions for storage Store in a refrigerator (2°C – 8°C). Do not freeze. Keep the vial in the outer carton in order to protect from light. For storage conditions after reconstitution of the medicinal product, see section 6.3. 6.5 Nature and contents of container Each pack of Nuwiq 250 IU contains: - Powder: 250 IU powder in 8 ml type 1 glass vial, closed with coated bromobutyl stopper and sealed with aluminium flip-off cap - Solvent: 2.5 ml water for injections in a pre-filled borosilicate glass syringe - 1 sterile vial adapter for reconstitution with 1 butterfly needle and 2 alcohol swabs Pack size of 1. Each pack of Nuwiq 500 IU contains: - Powder: 500 IU powder in 8 ml type 1 glass vial, closed with coated bromobutyl stopper and sealed with aluminium flip-off cap - Solvent: 2.5 ml water for injections in a pre-filled borosilicate glass syringe - 1 sterile vial adapter for reconstitution with 1 butterfly needle and 2 alcohol swabs Pack size of 1. Each pack of Nuwiq 1000 IU contains: - Powder: 1000 IU powder in 8 ml type 1 glass vial, closed with coated bromobutyl stopper and sealed with aluminium flip-off cap - Solvent: 2.5 ml water for injections in a pre-filled borosilicate glass syringe - 1 sterile vial adapter for reconstitution with 1 butterfly needle and 2 alcohol swabs Pack size of 1. Each pack of Nuwiq 2000 IU contains: - Powder: 2000 IU powder in 8 ml type 1 glass vial, closed with coated bromobutyl stopper and sealed with aluminium flip-off cap - Solvent: 2.5 ml water for injections in a pre-filled borosilicate glass syringe - 1 sterile vial adapter for reconstitution with 1 butterfly needle and 2 alcohol swabs Pack size of 1. Not all pack sizes may be marketed. 6.6 Special precautions for disposal and other handling The powder should only be reconstituted with the supplied solvent (2.5 ml water for injections) using the supplied injection set. The vial should be gently rotated until all powder is dissolved. After reconstitution, the solution should be drawn back into the syringe. Reconstituted medicinal product should be inspected visually for particulate matter and discoloration prior to administration. The reconstituted medicinal product is a clear, colourless solution, free from foreign particles and has a pH of 6.5 to 7.5. Do not use solutions that are cloudy or have deposits. Instructions for preparation and administration 1. Allow the solvent syringe (water for injections) and the powder in the closed vial to reach room temperature. You can do this by holding them in your hands until they feel as warm as your hands. Do not use any other way to heat the vial and pre-filled syringe. This temperature should be maintained during reconstitution. 2. Remove the plastic flip-top cap from the powder vial to expose the central portions of the rubber stopper. Do not remove the gray stopper or metal ring around the top of the vial.
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NUWIQ(抗血友病因子/人凝血因子VIII(重组)注射用冻干粉)简介:
英文药名:Nuwiq(human coagulation factor VIII recombinant DNA, simoctocog alfa)
中文药名:注射用抗血友病因子/人凝血因子VIII(重组)冻干粉
生产厂家:Octapharma USA,Inc药品介绍NUWIQ®, ... 责任编辑:admin |
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