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Friday, April 24, 2026

Addex Spin-Out Neurosterix to Complete Phase 1 for NTX-253 for Schizophrenia in Q2

  Addex Therapeutics (SIX: ADXN and Nasdaq: ADXN), a clinical-stage biopharmaceutical company focused on developing a portfolio of novel small molecule allosteric modulators for neurological disorders, today announced that its spin-out company, Neurosterix, is on track to complete its Phase 1 clinical study evaluating NTX-253 in Q2 2026. NTX-253 is an investigational potent, selective, orally available positive allosteric modulator (PAM) of the muscarinic M4 receptor being developed for the treatment of schizophrenia. The study is designed to generate a robust early-stage clinical data package assessing safety, tolerability, and pharmacokinetics (PK) across both healthy adult participants and those with stable schizophrenia.

The clinical study includes a multi-part, ascending-dose design intended to efficiently characterize NTX-253’s clinical profile and support subsequent patient-focused development. The study includes both single ascending dose (SAD) and multiple ascending dose (MAD) components, incorporating key translational elements such as food-effect and cerebrospinal fluid (CSF) assessments.

https://www.addextherapeutics.com/en/investors/press-releases/addex-spin-out-company-neurosterix-track-complete-phase-1-clinical-study-ntx-253-schizophrenia-q2-2026

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