Overview

This is a summary of the European public assessment report (EPAR). It explains how the Committee for Medicinal Products for Human Use (CHMP) assessed the studies performed, to reach its recommendations on how to use the medicine.

If you need more information about your medical condition or your treatment, read the package leaflet (also part of the EPAR) or contact your doctor or pharmacist. If you want more information on the basis for the CHMP recommendations, read the scientific discussion (also part of the EPAR).

Elaprase is a medicine that contains the active substance idursulfase. It is available as a concentrate that is made up into a solution for infusion (drip) into a vein.

Elaprase is used to treat patients with Hunter syndrome. It is designed for long-term use.

Hunter syndrome, which is also known as mucopolysaccharidosis II, is a rare, inherited disease that primarily affects male patients. Patients with Hunter syndrome do not produce an enzyme called iduronate-2-sulfatase. This enzyme is needed to break down substances in the body called glycosaminoglycans (GAGs). Since patients with Hunter syndrome cannot break these substances down, the GAGs gradually build up in most of the organs in the body and damage them. This causes a wide range of symptoms, particularly difficulty breathing and difficulty walking. Without treatment, these symptoms become more severe over time.

Because the number of patients with Hunter syndrome is low, the disease is considered ‘rare’, and Elaprase was designated an ‘orphan medicine’ (a medicine used in rare diseases) on 11 December 2001.

The medicine can only be obtained with a prescription.

Elaprase treatment should be supervised by a doctor or other healthcare professional who has experience in the management of patients with Hunter syndrome or other inherited diseases affecting the metabolism.

Elaprase is given every week, as an infusion into a vein, at a dose of 0.5 mg per kilogram body weight. The infusion should last three hours. However, as long as the patient does not develop infusion reactions (rash, itching, fever, headache, high blood pressure or flushing), the duration of the infusion can be gradually reduced to one hour.

Patients who tolerate the infusions well for several months in a clinic may be able to start having them at home. Home infusions should be supervised by a doctor or nurse.

The active substance in Elaprase, idursulfase, is a copy of the human enzyme iduronate-2-sulfatase. It replaces the enzyme that is missing or defective in patients with Hunter syndrome. Supplying the enzyme will help to break down GAGs and stop them building up in body tissue, thereby helping to improve the symptoms of the disease.

The main study of Elaprase involved 96 male patients aged between 5 and 31 years, and compared it with placebo (a dummy treatment). The main measures of effectiveness were lung function (‘forced vital capacity’, the maximum amount of air the patient could breathe out), and the distance the patients could walk in six minutes, which measures the combined effects of the illness on the heart, lungs, joints and other organs. These measurements were taken at the start of the study and after a year of treatment.

Elaprase improved lung function and the walking ability of the patients. At the start of the study, the patients could walk an average of around 395 metres in six minutes. After a year, the patients receiving Elaprase could walk a further 43 metres on average, and the patients receiving placebo could walk a further 8 metres. The medicine also produced an improvement in lung function, while the patients on placebo showed a slight worsening.

The most common side effects with Elaprase are related to the infusion, including skin reactions (rash or itching), fever, headache, high blood pressure and flushing. Other side effects seen in more than 1 patient in 10 are wheezing, dyspnoea (difficulty breathing), abdominal pain (stomach ache), nausea (feeling sick), dyspepsia (heartburn), diarrhoea, vomiting, swelling at the site of infusion and chest pain. Severe allergic reactions have occurred in some patients taking Elaprase. For the full list of all side effects reported with Elaprase, see the package leaflet.

Elaprase must not be used in people who have had a severe or life-threatening allergic (anaphylactic) reaction to idursulfase or any of the other ingredients if their allergy is not controllable. If given to patients who have had severe allergic reactions in the past, Elaprase should be used with caution, and trained staff and equipment for emergency resuscitation should be available during infusion.

The CHMP concluded that the improvements shown in the study, even if limited, represent a clinical benefit in the treatment of Hunter syndrome. The Committee decided that Elaprase’s benefits are greater than its risks and recommended that it be given marketing authorisation.

Elaprase has been authorised under ‘exceptional circumstances’. This means that because Hunter syndrome is rare, it has not been possible to obtain complete information about Elaprase. Every year, the European Medicines Agency will review any new information that may become available and this summary will be updated as necessary.

The company that markets Elaprase will investigate the long-term effects of the medicine, particularly on the lungs, the heart and the blood vessels, and whether the body produces antibodies that could affect the medicine’s safety and effectiveness.

Recommendations and precautions to be followed by healthcare professionals and patients for the safe and effective use of Elaprase have been included in the summary of product characteristics and the package leaflet.

The European Commission granted a marketing authorisation valid throughout the European Union for Elaprase on 8 January 2007.

For more information about treatment with Elaprase, read the package leaflet (also part of the EPAR) or contact your doctor or pharmacist.

This summary was last updated in 09-2016.

Elaprase : EPAR - Summary for the public

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Product information

Elaprase : EPAR - Product Information

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Latest procedure affecting product information: IAIN/0108/G

14/12/2022

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This medicine’s product information is available in all official EU languages.
Select 'available languages' to access the language you need.

Product information documents contain:

  • summary of product characteristics (annex I);
  • manufacturing authorisation holder responsible for batch release (annex IIA);
  • conditions of the marketing authorisation (annex IIB);
  • labelling (annex IIIA);
  • package leaflet (annex IIIB).

Elaprase : EPAR - All Authorised presentations

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Product details

Name of medicine
Elaprase
Active substance
idursulfase
International non-proprietary name (INN) or common name
idursulfase
Therapeutic area (MeSH)
Mucopolysaccharidosis II
Anatomical therapeutic chemical (ATC) code
A16AB09

Pharmacotherapeutic group

Other alimentary tract and metabolism products

Therapeutic indication

Elaprase is indicated for the long-term treatment of patients with Hunter syndrome (mucopolysaccharidosis II, MPS II). Heterozygous females were not studied in the clinical trials.

Authorisation details

EMA product number
EMEA/H/C/000700

Additional monitoring

This medicine is under additional monitoring, meaning that it is monitored even more intensively than other medicines. For more information, see Medicines under additional monitoring.

Exceptional circumstances

This medicine was authorised under exceptional circumstances, because the applicant was unable to provide comprehensive data on the efficacy and safety of the medicine under normal conditions of use. This can happen because the condition to be treated is rare or because collection of full information is not possible or is unethical. For more information, see Pre-authorisation guidance.

Marketing authorisation holder
Takeda Pharmaceuticals International AG Ireland Branch

Block 2 Miesian Plaza
50-58 Baggot Street Lower
Dublin 2
Co Dublin
D02 HW68
Ireland

Marketing authorisation issued
08/01/2007
Revision
25

Assessment history

Elaprase : EPAR - Procedural steps taken and scientific information after authorisation

Elaprase-H-C-700-PSUV-0047 : EPAR - Scientific conclusions and grounds recommending the variation to the terms of the marketing authorisation

Elaprase : EPAR - Procedural steps taken before authorisation

Elaprase : EPAR - Scientific Discussion

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