The Division of Drug Information (DDI) is CDER's focal point for public inquiries. We serve the public by providing information on human drug products and drug product regulation by FDA.
The U.S. Food and Drug Administration today approved Procysbi (cysteamine bitartrate) for the management of nephropathic cystinosis in children and adults. Procysbi was granted orphan product designation because it is intended to treat a rare disease or condition.
Cystinosis is a rare genetic condition that affects an estimated 500 patients in the United States and about 3,000 patients worldwide. Fatal if not treated in early childhood, cystinosis causes a protein building block called cystine to build up in every cell of the body. The buildup of cystine causes kidney problems, which can cause the body to lose too much sugar, proteins and salts through the urine. Cystinosis may lead to slow body growth and small stature, weak bones and developing and worsening kidney failure. There are three types of cystinosis, the most severe being nephropathic cystinosis, which severely damages the kidneys.
Currently the FDA approved drugs used to treat cystinosis include Cystagon (cysteamine bitartrate), an immediate-release tablet that was approved in 1994, and Cystaran (cysteamine ophthalmic solution) eye drops, approved last year to treat corneal cystine crystal accumulation.
Procysbi is a delayed-release capsule intended for patients ages 6 years and older. While Cystagon is taken every six hours around the clock to control cystine levels, Procysbi is a long-acting formulation that is taken every 12 hours.
For more information, please visit: Procysbi.
For more information, please visit: Procysbi.
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