Open Access
CC BY-NC-ND 4.0 · Journal of Child Science 2018; 08(01): e156-e162
DOI: 10.1055/s-0038-1667346
Review Article
Georg Thieme Verlag KG Stuttgart · New York

Causal Therapies in Mucopolysaccharidoses: Enzyme Replacement Therapy

Ara Vartanyan
1   School of Medicine, Saint Louis University, St. Louis, Missouri, United States
,
Adriana M. Montaño
2   Department of Pediatrics, School of Medicine, Saint Louis University, St. Louis, Missouri, United States
3   Department of Biochemistry and Molecular Biology, School of Medicine, Saint Louis University, St. Louis, Missouri, United States
› Author Affiliations
Further Information

Publication History

26 January 2018

19 April 2018

Publication Date:
03 October 2018 (online)

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Abstract

Enzyme replacement therapy (ERT) for mucopolysaccharidoses (MPS) is the treatment of choice for patients, since it specifically addresses the underlying cause of the disease. Intravenous weekly infusions of recombinant enzymes for MPS I, II, IVA, VI, and VII have proven to be safe and efficacious for somatic symptoms. ERT has been shown to decrease urinary glycosaminoglycan levels and organomegaly, while improving stamina of patients, respiratory function, and quality of life. Although early administration of ERT optimizes outcomes, adult patients still benefit from treatment. ERT has been successfully used as combination therapy with hematopoietic stem cell transplant for patients with MPS I and MPS II, improving patient's cognitive outcomes. Although patients can receive benefit from ERT, current challenges include lack of improvement of neurological manifestations, limited effect on bone disease, development of immune response toward the infused enzyme, and high cost. We will discuss the milestones achieved by intravenous ERT for MPS diseases as well as the current challenges.