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. First approved in 2013.
Drug data last refreshed 9h ago · AI intelligence enriched 2d ago
PROCYSBI (cysteamine bitartrate) is an oral delayed-release capsule approved in 2013 for nephropathic cystinosis, a rare autosomal recessive lysosomal storage disorder. It works by participating in thiol-disulfide interchange reactions within lysosomes to convert cystine into cysteine and cysteine-cysteamine mixed disulfide, allowing these products to exit the lysosome and reducing cystine accumulation. The drug delays progression of renal failure, growth retardation, and other multi-organ complications that would otherwise lead to end-stage renal disease by age 10.
Established mature product with modest but stable utilization in a niche rare disease space; team size likely small and specialized.
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…
Indication data is being enriched from DailyMed and FDA labeling. Check back soon for approved therapeutic uses.
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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Upgrade to Pro — $25/moWorking on PROCYSBI positions you in Amgen's rare disease franchise with deep expertise in orphan indication management, reimbursement navigation, and long-term patient relationship building. The niche market and stable commercial profile offer focused career development in specialized therapeutic areas rather than high-volume blockbuster dynamics.