Duvyzat

Pronunciation: doo' vi zat
Generic name: givinostat
Dosage form: oral suspension (8.86 mg/mL)

Medically reviewed by Melisa Puckey, BPharm. Last updated on Mar 25, 2024.

What is Duvyzat?

Duvyzat is used to treat Duchenne muscular dystrophy (DMD) to delay symptoms and disease progression. Duvyzat works by inhibiting enzymes called HDACs that are involved in muscle damage. By inhibiting the HDAC, Duvyzat slows down muscle deterioration in this muscle-wasting disorder, DMD. Duvyzat can be used in all genetic variants of DMD in patients 6 years and older.  Duvyzat is given as an oral suspension twice daily with food.

Duvyzat FDA approval was received on March 21, 2024, based on positive results from the EPIDYS clinical trial (NCT02851797). This trial showed that patients using Duvyzat had a statistically significant and clinically meaningful difference in time to complete the four-stair climb assessment compared to the placebo group.

 Duvyzat contains the active ingredient (givinostat) which is a novel histone deacetylase (HDAC) inhibitor.

What is Duchenne Muscular Dystrophy?

Duchenne muscular dystrophy (DMD) is the most common type of muscular dystrophy, which is a genetic disease that causes progressive muscle weakness and damage. DMD is caused by mutations in a gene responsible for properly making a protein called dystrophin.  Without the proper dystrophin, muscle fibers are easily injured, causing inflammation and problems with muscle regeneration, and muscle tissue may be replaced with fibrotic and fat tissue. Damage to the muscles causes symptoms to worsen over time, affecting the ability to walk, and eventually, heart and respiratory muscles are affected, which are the two main causes of early death. 

How does Duvyzat work?

In DMD, there is a deficiency in dystrophin, which causes an overactivity of the enzyme HDACs (histone deacetylases), which results in muscle problems and symptoms of DMD.  Duvyzat works by blocking the enzyme HDAC, which reduces overactivity to help slow down muscle deterioration to slow and DMD disease progression.

Duvyzat Side Effects

Common Duvyzat side effects

The most common Duvyzat side effects include diarrhea, nausea, vomiting, fever, stomach pain, low platelet blood counts, and increased fat levels in the blood. These side effects occur in 10% or more of patients treated with this medicine.

Serious Duvyzat side effects

Duvyzat can cause serious side effects including changes in the electrical activity of your heart called QT Prolongation. QT Prolongation can increase the risk of developing a type of irregular heart rhythm known as Torsades de Pointes. Call your healthcare provider right away if you feel faint, have an irregular heartbeat, feel dizzy, or lose consciousness.

Also, see the Warnings section for more serious side effects.

These are not all of the possible side effects of this medicine. For more information, ask your healthcare provider or pharmacist. Talk to your healthcare provider if you have any side effects that bother you or do not go away. Contact your doctor for medical advice. You may report side effects to the FDA at 1-800-FDA-1088.

Warnings

Duvyzat can cause serious side effects, including: 

Low platelet counts in your blood (thrombocytopenia). Platelets are important for blood clotting, and a decrease in their numbers can lead to an increased risk of bleeding or bruising. Your healthcare provider will check your blood count before you start and regularly during treatment for any signs of thrombocytopenia. Call your healthcare provider right away if you notice any unusual bleeding or small red or purple spots on the skin called petechiae.

Increased levels of fat (triglycerides) in your blood. Although you may not have any symptoms of high triglycerides, your healthcare provider will do blood tests before you start this medicine and regularly during treatment to check your triglyceride levels. 

Frequent watery loose stools (diarrhea) and vomiting. Duvyzat can cause vomiting and moderate to severe diarrhea. If diarrhea occurs, you should track the frequency and severity of your symptoms, drink plenty of fluids, and contact your healthcare provider. 

Your healthcare provider may change your dose or stop treatment if any of the above side effect symptoms cannot be managed.

Before taking this medicine

Before taking this medicine, it is important to tell your healthcare provider about all of your medical conditions, including:

• any heart problems or if you take any medicines that could increase your chance of irregular heart rhythms.
• have any bleeding problems.

Before starting this medicine, you will have blood tests to check your baseline platelet counts and triglycerides level, these will also be monitored during treatment.

Patients who have underlying cardiac disease or are taking other medications that cause QT prolongation will have ECGs when starting treatment with Duvyzat during concomitant use and as clinically indicated. 

How should I take Duvyzat?

Duvyzat is a liquid (oral suspension) that is taken by mouth twice a day with food. 

Shake the bottle for at least 30 seconds by continuously turning the bottle up and down. Stop shaking when the medicine looks well mixed and the same throughout.

Your healthcare provider will tell you how much to take and when to take it.

Take the prescribed dose of Duvyzat by mouth (orally) using the oral syringe that came with your medicine. Keep the oral syringe to be used again.

Duvyzat should not be mixed with water or other liquids.

Your healthcare provider may change your dose if needed. Do not change your dose of this medicine without

talking to your healthcare provider.

Please refer to the Instructions for Use that came with your Duvyzat medicine for detailed instructions on how to take it correctly.

Duvyzat Dosing Information

The recommended dose of Duvyzat is based on body weight.

Duvyzat is available as an oral suspension containing givinostat 8.86 mg/mL.

What happens if I miss a dose?

If you miss a dose of medicine, skip the missed dose and take your next dose of Duvyzat as scheduled.

Interactions

Tell your healthcare provider about all of the medicines you take, including prescription and over-the-counter

medicines, vitamins, and herbal supplements.

Taking Duvyzat with certain other medicines may affect each other and can cause serious side effects. Do not start or stop other medicines without talking to your healthcare provider.

Know the medicines you take. Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine.

Not all possible interactions are listed here.

Storage

• Store at 20°C to 25°C (68°F to 77°F)
• Do not freeze. 
• Store upright.
• Discard any unused suspension 60 days after the first opening of the bottle.

Ingredients

Active ingredient: givinostat

Inactive ingredients: cream flavor, glycerin, non-crystallizing sorbitol solution, peach flavor, polysorbate 20, purified water, saccharin sodium, sodium benzoate, sodium hydroxide, tartaric acid, and tragacanth

Manufacturer

LLCITF Therapeutics, LLC Concord, MA 01742.

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Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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