neural target engagement
Demonstration that an investigational treatment modulates its intended neurobiological mechanism in the human brain.
Full Definition
Neural target engagement refers to evidence that an investigational psychiatric treatment successfully modulates its intended neurobiological target or pathway in the human brain. This concept bridges preclinical mechanisms with clinical outcomes, providing biological validation that the treatment is working through its hypothesized mechanism of action. In psychiatric drug development, target engagement can be demonstrated through various biomarker approaches including neuroimaging (PET, fMRI), neurophysiology (EEG), or biochemical measures (CSF, blood). Demonstrating target engagement is increasingly important for regulatory agencies and helps optimize dosing, timing, and patient selection for psychiatric interventions.
Usage
Usage note: Hyphenate when used as compound modifier: 'neural-target-engagement biomarker'.
In Context
- "PET imaging confirmed neural target engagement with 80% receptor occupancy at therapeutic doses." — Phase I study report
- "The biomarker strategy aimed to demonstrate neural target engagement before proceeding to efficacy studies." — Development plan