Migalastat CAS NO 108147-54-2 Inquire about Migalastat

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What is Migalastat?Migalastat

Migalastat (or 1-deoxygalactonojirimycin; trade names Galafold and formerly Amigal) is a drug for the treatment of Fabry disease, a rare genetic disorder. It was developed by Amicus Therapeutics. The US Food and Drug Administration (FDA) assigned it orphan drug status in 2004, and the European Committee for Medicinal Products for Human Use (CHMP) followed in 2006. The European Commission approved the drug in May 2016.

Mechanism of Action:

Fabry disease is a genetic disorder caused by various mutations of the enzyme α-GalA, which is responsible for breaking down the sphingolipid globotriaosylceramide (Gb3), among other glycolipids and glycoproteins. Some of these mutations result in misfolding of α-GalA, which subsequently fails protein quality control in the endoplasmic reticulum and is decomposed. Lack of functional α-GalA leads to accumulation of Gb3 in blood vessels and other tissues, with a wide range of symptoms including kidney, heart, and skin problems. Migalastat is a potent, orally available inhibitor of α-GalA (IC50: 4 μM). When binding to faulty α-GalA, it shifts the folding behaviour towards the proper conformation, resulting in a functional enzyme provided the mutation is amenable. Molecules with this type of mechanism are called pharmacological chaperones.When the enzyme reaches its destination, the lysosome, migalastat dissociates because of the low pH and the relative abundance of Gb3 and other substrates, leaving α-GalA free to fulfill its function. Depending on the mutation, the EC50 is between 0.8 µM and over 1 mM in cellular models.

Medical use:

Migalastat is used for the long-term treatment of Fabry disease in adults and adolescents aged 16 or older with an amenable mutation of the enzyme alpha-galactosidase A (α-GalA). An “amenable” mutation is one that leads to misfolding of the enzyme, but otherwise would not significantly impair its function.Based on an in vitro test, Amicus Therapeutics has published a list of 269 amenable and nearly 600 non-amenable mutations. About 35 to 50% of people with Fabry have an amenable mutation.


Migalastat is almost completely absorbed from the gut; taking the drug together with food decreases its absorption by about 40%. Total bioavailability is about 75% when taken without food. The substance is not bound to blood plasma proteins.Only a small fraction of a migalastat dose is metabolized, mainly to three dehydrogenated O-glucuronides (4% of the dose) and a number of unspecified metabolites (10%). The drug is mainly eliminated via the urine (77%) and to a smaller extent via the faeces (20%). Practically all of the metabolites are excreted in the urine. Elimination half-life is three to five hours after a single dose.

Migalastat Side effects:

The most common side effect in clinical trials was headache (in about 10% of people who take it). Less common side effects (between 1 and 10% of people) included unspecific symptoms such as dizziness, fatigue, and nausea, but also depression. Possible rare side effects could not be assessed because of the low number of subjects in the clinical trials in which adverse effects were measured.


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