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Peptides/Neuroprotective

ARA-290 (Cibinetide)

Grade B

Promising small-molecule peptide for diabetic neuropathy and sarcoidosis-related small fiber neuropathy. Phase II trials show improved nerve fiber density and reduced neuropathic pain without raising hematocrit.

Mechanism of Action

11-amino-acid peptide derived from erythropoietin's helix B. Binds the innate-repair receptor (a heterodimer of EPOR + βcR) to trigger tissue-protective and anti-inflammatory cascades without activating the hematopoietic EPO receptor.

Typical Protocol

Dose
4 mg
Frequency
Once daily
Duration
28 days (typical trial protocol)
Timing
Morning, subcutaneous (abdominal site)
Route
Subcutaneous injection
Half-life
~2 minutes systemic (sustained tissue receptor occupancy)

Educational reference only — not medical advice.

Reported Benefits

  • Improved corneal nerve fiber density in sarcoid neuropathy
  • Reduction in neuropathic pain scores (Phase II)
  • Anti-inflammatory effect without immunosuppression
  • No hematopoietic stimulation (unlike EPO)

Side Effects

  • Injection site irritation
  • Mild headache
  • Short-term safety profile favorable in completed trials

Contraindications

  • Active malignancy (limited data)
  • Pregnancy and lactation

Known Interactions

EPO / ESAsMechanistically distinct but caution if combined.

References

  1. [1]ARA 290 improves symptoms in patients with sarcoidosis-associated small nerve fiber loss Molecular Medicine, 2015

Comparison vs Alternatives

All Peptides →
AttributeARA-290 (Cibinetide)This pageSemaglutideRetatrutide
EvidenceGrade BGrade AGrade A
CategoryNeuroprotectiveMetabolicMetabolic
Best forNeuropathy, inflammationGLP-1 receptor agonistTriple GIP/GLP-1/glucagon agonist
Typical dose4 mg0.25 → 2.4 mgTitrated 2 mg → 4 mg → 8 mg → 12 mg
FrequencyOnce dailyWeeklyOnce weekly
RouteSubcutaneous injectionSubcutaneous weekly (oral form available)Subcutaneous injection
Legal statusInvestigational drug; not approved for general human therapeutic use.FDA-approved (Ozempic, Wegovy). Prescription required.Investigational; not yet FDA-approved. Currently available only via clinical trials.
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