Abstract
Mucopolysaccharidosis type VI (MPS VI) is a progressive, chronic, and multisystem lysosomal storage disease. Enzyme replacement therapy (ERT) with the recombinant human arylsulfatase B enzyme (galsulfase [Naglazyme]) is recommended as first-line therapy. It is generally reported as safe and well tolerated. Frequently observed mild to moderate infusion-related reactions which can be easily handled by reducing or interrupting the infusion and/or administering additional antihistamines, antipyretics, and corticosteroids are mostly mediated by non-IgE mechanisms. Here we report two children with MPS VI who experienced IgE-mediated reactions with galsulfase at the second year of the therapy. One child had anaphylaxis and the other had urticarial eruptions. They could receive ERT after successful rapid desensitization. To our knowledge, this is the second report on galsulfase allergy with IgE-mediated reaction. It is important to recognize IgE-mediated reactions since they can be life-threatening and do not respond to the standard therapies. We recommend allergy skin tests in the evaluation of infusion-related reactions unresponsive to standard therapies, so that continuation of ERT will be feasible after successful desensitization.
Competing interests: None declared
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Abbreviations
- BWH:
-
Brigham and Women’s Hospital
- ERT:
-
Enzyme replacement therapy
- GAG:
-
Glycosaminoglycan
- MPS VI:
-
Mucopolysaccharidosis type VI
- N-acetylgalactosamine-4-sulfatase:
-
Arylsulfatase B
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Communicated by: Olaf Bodamer, MD
Appendices
Take-Home Message
Allergy skin tests should be performed in the evaluation of infusion-related reactions unresponsive to standard therapies, so that continuation of ERT will be feasible after successful desensitization.
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Conflict of Interest
Zeynep Tamay, Gulden Gökçay, Fatih Dilek, Mehmet C Balci, Deniz Ozceker, Mubeccel Demirkol, and Nermin Guler declare that they have no conflict of interest.
Competing Interests
All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000. Informed consent was obtained from all patients for being included in the study.
This article does not contain any animal subjects performed by the any of the authors.
Details of the Contributions of Individual Authors
Zeynep Tamay designed and reported the cases; Fatih Dilek, Mehmet C Balci, and Deniz Ozceker conducted the rapid desensitization procedures; Gulden Gokcay revised the language and also revised the intellectual content with Mubeccel Demirkol and Nermin Guler.
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© 2016 SSIEM and Springer-Verlag Berlin Heidelberg
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Tamay, Z. et al. (2016). Rapid Desensitization for Immediate Hypersensitivity to Galsulfase Therapy in Patients with MPS VI. In: Morava, E., Baumgartner, M., Patterson, M., Rahman, S., Zschocke, J., Peters, V. (eds) JIMD Reports, Volume 30. JIMD Reports, vol 30. Springer, Berlin, Heidelberg. https://doi.org/10.1007/8904_2016_542
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DOI: https://doi.org/10.1007/8904_2016_542
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