
← Peptides Explained18 Aug · 17 min
ARA-290: Can It Repair Small Nerve Fibers?
ARA-290, also called cibinetide, is an investigational 11-amino-acid peptide designed from erythropoietin biology to activate tissue-protective signaling without stimulating red-blood-cell production.
In this episode, John Garrett, RN, breaks down the innate repair receptor, why ARA-290 has been studied in small-fiber neuropathy, what randomized human trials in sarcoidosis and type 2 diabetes actually found, and why objective nerve-fiber signals are interesting—but not the same thing as an approved therapy.
You'll learn:
• What ARA-290/cibinetide is
• How it differs from full-length erythropoietin
• What the innate repair receptor is
• Why researchers studied corneal nerve fibers
• What the 22-patient pilot trial showed
• What the 64-patient phase 2b trial showed
• Why pain and nerve-fiber endpoints did not tell exactly the same story
• What is known—and not known—about safety
• Why online ARA-290 products should not be assumed equivalent to trial material