Miglustat, sold under the brand name Zavesca, is a medication used to treat Gaucher disease type 1 (GD1) and Niemann–Pick disease type C (NPC).[2] It is taken by mouth.[1]
Miglustat was approved for medical use Europe in 2002 and the United States in 2003.[2][1] It is available as a generic medication.[6] In the United Kingdom 4 weeks of medication costs the NHS about £3,400 as of 2021.[6] This amount in the United States costs about 23,000 USD.[7]
Miglustat is contraindicated for people with neurological conditions, kidney problems, women who are pregnant, and men and women planning to conceive a child.[9]
Serious side effects include pain, burning, numbness or tingling in the hands, arms, legs, or feet; shaking hands that cannot be controlled; changes in vision; and easy bruising or bleeding. Common side effects include gastrointestinal effects (including diarrhea, stomach pain or bloating, gas, loss of appetite, weight loss, upset stomach, vomiting, constipation), dry mouth, muscular effects (including weakness, muscle cramps, especially in the legs, feeling of heaviness in the arms or legs, unsteadiness when walking), back pain, dizziness, nervousness, headache, memory problems, and difficult or irregular menstruation (period).[9]
Type I Gaucher's disease is an autosomal recessive disorder; parents are generally healthy carriers with one functional and one mutated (nonfunctioning) copy of the Gaucher disease gene, GBA. People with type I Gaucher have a defect in the enzyme called glucocerebrosidase (also known as acid β-glucosidase). Glucocerebrosidase is an enzyme, and its function is to convert glucocerebroside (also known as glucosylceramide) into ceramide and glucose. When this enzyme doesn't work, glucocerebroside accumulates, which in turn causes liver and spleen enlargement, changes in the bone marrow and blood, and bone disease. It functions as a competitive and reversible inhibitor of the enzyme glucosylceramide synthase, the initial enzyme in a series of reactions which results in the synthesis of most glycosphingolipids.[10][11]
Miglustat has been approved in the EU, Canada, and Japan for treating progressive neurological complications in people with Niemann–Pick disease, type C (NPC). Miglustat has not received approval for this indication outside of these countries and use for this disease, including the US, is off-label.[18][19][20][21][22]
In July 2004, Actelion started a clinical trial of miglustat to treat Tay–Sachs disease, particularly late-onset Tay–Sachs with an estimated enrollment of 10 subjects; the trial ended August 2007.[23]
↑Cox TM, Aerts JM, Andria G, Beck M, Belmatoug N, Bembi B, et al. (2003). "The role of the iminosugar N-butyldeoxynojirimycin (miglustat) in the management of type I (non-neuronopathic) Gaucher disease: a position statement". Journal of Inherited Metabolic Disease. 26 (6): 513–26. doi:10.1023/a:1025902113005. PMID14605497. S2CID6681399.
↑Abian O, Alfonso P, Velazquez-Campoy A, Giraldo P, Pocovi M, Sancho J (December 2011). "Therapeutic strategies for Gaucher disease: miglustat (NB-DNJ) as a pharmacological chaperone for glucocerebrosidase and the different thermostability of velaglucerase alfa and imiglucerase". Molecular Pharmaceutics. 8 (6): 2390–7. doi:10.1021/mp200313e. PMID21988669.
↑Solomon BI, Smith AC, Sinaii N, Farhat N, King MC, Machielse L, Porter FD. Association of Miglustat With Swallowing Outcomes in Niemann-Pick Disease, Type C1. JAMA Neurol. 2020 Sep 8;77(12):1–6. doi: 10.1001/jamaneurol.2020.3241. Epub ahead of print. PMID: 32897301; PMCID: PMC7489403. [1]Archived 2021-05-27 at the Wayback Machine