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Idursulfase

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Idursulfase
Clinical data
Drug classEnzyme[1]
Main usesMucopolysaccharidosis II (MPS-II)[1]
Side effectsRash, fever, headache, high blood pressure, flushing[2]
Pregnancy
category
Typical dose0.5 mg/kg q 1 week[3]
External links
AHFS/Drugs.comMonograph
Legal
License data

Idursulfase, sold under the brand name Elaprase, is a medication used to treat mucopolysaccharidosis II (MPS-II, Hunter syndrome).[1] It is given by gradual injection into a vein.[1] It is used long term.[3] Effects on life expectancy and quality of life is unclear.[4]

Common side effects include rash, fever, headache, high blood pressure, and flushing.[2] Other side effects may include shortness of breath, heartburn, chest pain, and anaphylaxis.[2] It is a form of lysosomal enzyme known as iduronate-2-sulfatase and is made by recombinant DNA technology.[1]

Idursulfase was approved for medical use in the United States in 2006 and Europe in 2007.[1][2] In the United States it costs about 475,000 USD to treat a 35 kg person for a year.[5] In the United Kingdom this amount costs £310,000.[3]

Medical uses

Dosage

It is given at a dose of 0.5 mg/kg once per week.[3]

Mechanism of action

Cellular uptake/intracellular trafficking of idursulfase[6]

In terms of the mode of action of idursulfase we find that it involves the hydrolysis of 2-sulfate esters of terminal iduronate sulfate residues from GAGs. This in turn reduces the accumulation of GAGs(which otherwise causes cellular engorgement, organomegaly, and organ system dysfunction)[6][7]

History

Overview of idursulfase clinical development

Timeline of important aspects in clinical development of idursulfase beginning in the year 2001 until recently[6](regulatory milestones and initiation dates of ongoing clinical studies are indicated with white boxes with red border)

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "Idursulfase Monograph for Professionals". Drugs.com. Archived from the original on 2 December 2021. Retrieved 25 November 2021.
  2. 2.0 2.1 2.2 2.3 "Elaprase". Archived from the original on 11 December 2021. Retrieved 25 November 2021.
  3. 3.0 3.1 3.2 3.3 BNF 81: March-September 2021. BMJ Group and the Pharmaceutical Press. 2021. p. 1116. ISBN 978-0857114105.
  4. "Idursulfase" (PDF). September 2009. Archived (PDF) from the original on 15 April 2021. Retrieved 25 November 2021.
  5. "Idursulfase Prices, Coupons & Savings Tips - GoodRx". GoodRx. Retrieved 25 November 2021.
  6. 6.0 6.1 6.2 Whiteman, David AH; Kimura, Alan (23 August 2017). "Development of idursulfase therapy for mucopolysaccharidosis type II (Hunter syndrome): the past, the present and the future". Drug Design, Development and Therapy. 11: 2467–2480. doi:10.2147/DDDT.S139601.
  7. "ELAPRASE (idursulfase)" (PDF). fda. Archived (PDF) from the original on 29 September 2024. Retrieved 2 February 2025.

External links

Identifiers: