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Pinteon Therapeutics

Antibody against toxic tau for brain injury and Alzheimer's

Raised to date

$29.2M

of $32.1M offered across 1 Form D filing

Still open
$2.9M
Investors
2
Last filed
Nov 12, 2025

About

Pinteon Therapeutics is a clinical-stage biotechnology company in Newton, Massachusetts developing antibody therapeutics for neurodegenerative disease. Its work centers on cis-pT231 tau, a conformation of the tau protein that is acutely neurotoxic and drives the initiation and spread of tau pathology. The company's lead asset, PNT001, is a monoclonal antibody that has completed a Phase 1 single-ascending-dose study in healthy volunteers and is aimed at tauopathies including traumatic brain injury, chronic traumatic encephalopathy, Alzheimer's disease and progressive supranuclear palsy. Pinteon is a small private company that has raised roughly $52M to date.

PNT001 is described as the only antibody in development that targets cis-pT231 tau specifically, a conformation-selective epitope that lets it neutralize an acutely neurotoxic form of tau rather than binding total tau, which is intended to both blunt acute neurotoxicity and block the propagation of tau pathology between neurons.

Funding

  • EquityFiled Nov 12, 2025Form D/A
    $29.2M/ $32.1M

Product

PNT001

Monoclonal antibody therapeutic

A monoclonal antibody targeting an epitope on cis-pT231 tau, a highly neurotoxic conformation of the tau protein implicated in the initiation and spread of tau pathology in neurodegenerative tauopathies.

  • Conformation-selective binding to cis-pT231 tau rather than total tau
  • Completed Phase 1 single-ascending-dose study in 49 healthy adults at doses from 33 mg to 4,000 mg
  • Well tolerated with no maximum tolerated dose reached and no treatment-related discontinuations

Built for

Patients with neurodegenerative tauopathies, initially traumatic brain injury and chronic traumatic encephalopathy, extending to Alzheimer's disease and progressive supranuclear palsy, reached through neurologists and the pharmaceutical partners or acquirers who would commercialize such a therapy.

People on file