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Zervimesine shows promise in slowing cognitive decline for Alzheimer's disease patients. Lower disease burden, indicated by plasma p-tau217, correlated with a more significant positive treatment effect in the SHINE trial.

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Area of Science:

  • Neuroscience
  • Pharmacology
  • Clinical Trials

Background:

  • Zervimesine (CT1812) is an experimental oral drug targeting amyloid beta oligomers.
  • It aims to protect neuronal synapses in Alzheimer's disease (AD) and dementia with Lewy bodies.

Purpose of the Study:

  • To evaluate the tolerability and clinical effects of zervimesine in adults with mild-to-moderate AD.
  • To assess treatment effects relative to placebo based on plasma p-tau217 levels.

Main Methods:

  • The Phase 2 SHINE clinical trial randomized 153 adults with amyloid-positive AD.
  • Participants received placebo or zervimesine (100 or 300mg) daily for 26 weeks.
  • Cognitive and functional assessments included ADAS-Cog, MMSE, ADSC-ADL, and CGIC.

Main Results:

  • Zervimesine treatment reduced cognitive decline by 39% on ADAS-Cog 11 and 70% on MMSE compared to placebo.
  • Patients with below-median plasma p-tau217 levels showed a more robust response, with 95% less decline on ADAS-Cog 11 and 108% less on MMSE.
  • This enhanced response was consistent across different baseline MMSE severity ranges.

Conclusions:

  • Zervimesine demonstrates potential in slowing cognitive decline in AD patients.
  • Lower disease burden, indicated by plasma p-tau217, predicts a more pronounced treatment effect.
  • The drug showed benefits across the mild-to-moderate MMSE spectrum, suggesting a therapeutic window for moderate AD patients.