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Immune functionTREM-1 inhibitor peptide

Nangibotide

Also known as: LR12, Motrem

By the Peptide Dossier Editorial TeamUpdated How we source

Nangibotide is an investigational TREM-1 inhibitor studied by IV infusion in septic shock. ASTONISH did not meet its primary organ-failure endpoint; later-cutoff biomarker signals remain unconfirmed subgroup findings.

Quick Facts

Class:TREM-1 inhibitor peptide
US product context:Investigational; no FDA approval.
Evidence context:Negative Phase IIb primary endpoint, with unconfirmed biomarker-subgroup findings.

Identity and clinical development

Nangibotide, also called LR12 or Motrem, is a twelve-amino-acid peptide developed by Inotrem. It is studied in septic shock, where infection causes dangerous hypotension and organ dysfunction. Administration is by IV infusion, and the medicine remains investigational.

TREM-1 amplification and biomarker strategy

The peptide acts as a decoy interfering with triggering receptor expressed on myeloid cells-1, or TREM-1. This pathway amplifies inflammation, which can become damaging in septic shock. Reducing receptor engagement is intended to lower excessive inflammatory signaling.

Soluble TREM-1 is used as a marker of pathway activation. Selecting patients with higher biomarker values is a development strategy, not itself proof of treatment efficacy.

Sources: [1]

Approval and ASTONISH results

No FDA approval is described. Development has continued toward a possible biomarker-enriched Phase III program.

Nangibotide ASTONISH outcomes
ASTONISH Phase IIb analysisOrgan-failure result
Predefined high-biomarker groupImprovement was not statistically significant.
Overall populationImprovement was not statistically significant.
Higher biomarker cutoffsA clinically relevant subgroup signal was reported, requiring confirmation.

The company initially characterized the results positively, but the peer-reviewed report states that the primary endpoint was not achieved. The controlled evidence does not establish benefit; the subgroup should not be reported as a positive overall trial.

References and further reading

This reference draws on Superpower’s Peptide Library and the research linked below. Peptide Dossier’s editorial team adapted and integrated the material on .

  1. 10.1016/S2213-2600(23)00158-3TREM-1 amplification and biomarker strategyCited in: TREM-1 amplification and biomarker strategy

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Disclaimer: This article is for informational and educational purposes only. It is not intended as medical advice. The information presented is based on published research and should not be used as a substitute for professional medical guidance. Always consult a qualified healthcare provider before starting any peptide protocol. Some peptides discussed may not be approved for human use by the FDA or equivalent regulatory bodies.