Chaperone therapy for Fabry disease
Migalastat
An oral chaperone medicine for Fabry disease in people with a suitable (amenable) gene change.
What is Migalastat?
Migalastat is an oral capsule used to treat Fabry disease, a rare inherited condition in which a missing or faulty enzyme lets a fatty substance build up in the body's cells over many years. It works only in people whose specific gene change is suitable (described as amenable), by helping their own partly working enzyme fold and function better, so it is not an option for everyone. It is taken on an empty stomach on alternate days and offers a capsule alternative to the regular enzyme infusions otherwise used. It is a lifelong treatment looked after by a specialist metabolic team with regular monitoring.
Education and reference only. This is a plain-language guide to Migalastat — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
Migalastat is a treatment for Fabry disease, a rare inherited (genetic) condition in which the enzyme that normally breaks down a fatty substance does not work properly, so the substance gradually builds up and can affect the kidneys, heart, nerves and skin. Migalastat is one of the few options that can be taken as a capsule rather than given as an infusion, but it only suits people whose particular gene change is classed as amenable. It is started and supervised by a specialist metabolic centre.
How it works
In suitable people, some faulty enzyme is still made but cannot hold its proper shape. Migalastat acts as a chaperone, attaching to this enzyme and helping it fold correctly so it can travel to where it is needed and break down the fatty substance more effectively. Because it relies on there being some working enzyme of the right type, it only helps people with an amenable gene change; for others it does nothing useful, which is why genetic testing decides whether it is an option.
Company & origin
Originated / developed by: Amicus Therapeutics.
A specialist oral medicine used in the UK by metabolic centres to treat Fabry disease in people whose gene change is suitable for it.
Practical use
How to take Migalastat
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- Take it on an empty stomach, with no food for a couple of hours before and after, as food greatly reduces how well it is absorbed.
- Take it on alternate days (one day on, one day off) at around the same time, following the pattern your metabolic team gives you.
- Swallow the capsule whole with water and do not open or crush it.
- If you miss a dose and remember on the same day, your team will advise; do not double up to catch up.
- Keep all your specialist appointments, as this is a lifelong treatment that needs ongoing monitoring.
Weighing it up
Advantages & disadvantages of Migalastat
Advantages
- Offers an oral capsule taken at home instead of regular enzyme infusions for suitable people.
- Helps the person's own enzyme work better, aiming to slow damage to the kidneys and heart.
- Taken only on alternate days, which some people find more convenient than frequent treatment.
Disadvantages
- Only works in people whose gene change is amenable, so it is not an option for many with Fabry disease.
- Must be taken on an empty stomach with food avoided around each dose, which takes planning.
- Does not cure the condition and needs lifelong specialist monitoring.
Practical use
Good to know
The single most important point is that migalastat only works for people whose Fabry gene change is amenable, confirmed by a genetic test, so it is not suitable for everyone with the condition. It is taken on an empty stomach, on alternate days, with food avoided for a couple of hours before and after each dose, because food markedly reduces how well it is absorbed; keeping to the alternate-day pattern and the empty-stomach rule matters for it to work. It offers the convenience of a capsule taken at home instead of regular infusions. As with all Fabry treatments, it does not cure the condition but aims to slow its progress, so it is taken lifelong and the specialist team continues to monitor the kidneys and heart over time.
Who should not take it / use with caution
- People whose Fabry gene change is not amenable, as it will not work for them.
- It is not suitable for those with severe kidney impairment, where the metabolic team will consider other options.
- Use in pregnancy or breastfeeding is decided by the specialist team after weighing benefits and risks.
Monitoring
- Regular checks of kidney function and the heart to see how the condition is progressing.
- Confirming the gene change is amenable before starting, by genetic testing.
- Reviewing symptoms and how well the alternate-day, empty-stomach schedule is being followed.
Side effects
- Headache is the most commonly reported effect.
- A stuffy or runny nose, tiredness, or feeling sick in some people.
- Tingling sensations or back pain are reported less often.
Key interactions
- Food is the main thing that interferes with it, which is why it is taken on an empty stomach.
- Tell your team about all other medicines, as treatment is overseen by a specialist centre.
- It is not usually combined with enzyme replacement infusions for the same condition.
Available as: Capsules taken by mouth.
Answers
Migalastat: frequently asked questions
Why does migalastat only work for some people with Fabry disease?
It helps the body's own partly working enzyme fold properly, so it only helps people whose gene change is amenable; a genetic test confirms whether it is suitable for you.
Why must I take it on an empty stomach?
Food greatly reduces how well it is absorbed, so it is taken with no food for a couple of hours before and after each dose.
Is it an alternative to infusions?
Yes, for suitable people it offers a capsule taken at home instead of the regular enzyme infusions otherwise used for Fabry disease.
Why is it taken every other day?
It is designed to be taken on alternate days; keeping to that pattern is part of how it is meant to work, so follow the schedule your team gives you.
Will it cure my Fabry disease?
No. It aims to slow the build-up and damage caused by the condition rather than cure it, so it is taken lifelong with ongoing specialist monitoring.
Authoritative sources
- BNF
- NICE CKS
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