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Addex Therapeutics is a clinical-stage pharmaceutical company focused on the development and commercialization of an emerging class of novel orally available small molecule drugs known as allosteric modulators for neurological disorders.

Allosteric modulators offer several potential advantages over conventional non-allosteric molecules and may offer an improved therapeutic approach to conventional "orthosteric" small molecule or biological drugs. Addex's allosteric modulator drug discovery platform targets receptors and other proteins that are recognized as essential for therapeutic intervention.

Addex's lead drug candidate, dipraglurant (mGlu5 negative allosteric modulator or NAM), is under evaluation for future development in a range of indications.

Addex's second clinical program, ADX71149 (mGlu2 positive allosteric modulator or PAM), developed in collaboration with Janssen Pharmaceuticals, Inc., is in a Phase 2a proof of concept clinical trial for the treatment of epilepsy.

Indivior PLC has licensed Addex’s GABABPAM program for the development of drug candidates, with a focus in substance use disorder.

Addex is also advancing a broad preclinical pipeline, which includes 

  • GABAB PAM for CMT1A 
  • mGlu7 NAM for PTSD 
  • mGlu2 NAM for mild neurocognitive disorders
  • M4 PAM for Schizophrenia & Other Psychosis
  • mGlu4 PAM for Parkinson’s disease  
  • mGlu3 PAM for neurodegenerative disorders

Addex was founded in 2002, headquartered in Geneva, Switzerland and listed on the SIX Swiss Stock Exchange under the trading symbol ADXN since 2007, and on the NASDAQ exchange also under the trading symbol ADXN since 2020.  

Find out more about ouClinical and Pre-Clinical Pipeline.