PROCYSBI (cysteamine bitartrate) by Amgen is mechanism of action cystinosis is an autosomal recessive inborn error of metabolism in which the transport of cystine out of lysosomes is abnormal; in the nephropathic form, accumulation of cystine and formation of crystals damage various organs, especially the kidney, leading to renal tubular fanconi syndrome and progressive glomerular failure, with end stage renal failure by the end of the first decade of life. Approved for cystinosis. First approved in 2020.
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PROCYSBI (cysteamine bitartrate) is a delayed-release oral granule approved in 2020 for cystinosis, a rare autosomal recessive lysosomal storage disorder. It works by participating in thiol-disulfide interchange reactions within lysosomes to convert toxic cystine into cysteine and mixed disulfides that can exit the lysosome. This mechanism halts progression of multi-organ damage caused by cystine crystal accumulation.
PROCYSBI is in peak commercial phase with $39M spending, indicating active market presence and sustained team investment for this orphan indication.
Mechanism of Action Cystinosis is an autosomal recessive inborn error of metabolism in which the transport of cystine out of lysosomes is abnormal; in the nephropathic form, accumulation of cystine and formation of crystals damage various organs, especially the kidney, leading to renal tubular…
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The information on this page is for informational purposes only and should not be used as a substitute for professional medical advice. Drug information is sourced from FDA, DailyMed, and other government databases. Adverse event data from FAERS does not establish causation. Always consult a healthcare professional for medical decisions.
PK and PD Study of NPI-001 and Cysteamine Bitartrate
A Long-term Extension of Study RP103-MITO-001 (NCT02023866) to Assess Cysteamine Bitartrate Delayed-release Capsules (RP103) in Children With Inherited Mitochondrial Disease
Open-Label, Safety and Superior Effectiveness Study of Cysteamine Bitartrate Delayed-Release Capsules (RP103) in Cystinosis
Safety/Effectiveness Study of Cysteamine Bitartrate Delayed-release Capsules (RP103) in Cysteamine Treatment Naive Patients With Cystinosis
Long-Term Safety Follow-up Study of Cysteamine Bitartrate Delayed-release Capsules (RP103)
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