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Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
Published on: February 6, 2019
A Randomized, Double-Blind, Placebo-Controlled, Crossover Study to Evaluate the Safety, Tolerability,
Stephen C Harris1, Manjunath S Shet1, Alessandra Cipriano1
1Imbrium Therapeutics, Stamford, CT.
Background:
Sunobinop is a potent, selective partial agonist at nociception/orphanin-FQ receptors with therapeutic potential in a variety of clinical disorders. This study assessed safety, tolerability, pharmacodynamics, and pharmacokinetic interactions of sunobinop and alcohol in healthy adults.
Methods:
This was a single-center, randomized, blinded, crossover study in 48 participants. Single doses of placebo, sunobinop 2 mg (therapeutic), and 6 mg (supratherapeutic), were administered in the morning with alcohol or placebo. Pharmacokinetic and pharmacodynamic profiles were compared.
Results:
Coadministration with alcohol did not alter the pharmacokinetics of alcohol or of sunobinop at either dose. A dose-effect relationship in the magnitude/duration of impairment in psychomotor/cognitive parameters was observed, with transient additive effects at 2 mg and greater-than-additive effects at 6 mg that resolved by 5 hours post administration. The most common treatment-emergent adverse event was somnolence, which was mild to moderate.
Conclusions:
A single oral dose of sunobinop was safe and tolerated alone and in combination with alcohol. No pharmacokinetic interaction between sunobinop and alcohol was observed. An additive or greater-than-additive effect was observed for psychomotor/cognitive measures consistent with sunobinop's sleep-promoting effect, and would peak and resolve during a typical night's sleep.
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