Ethanol and Cannabinoid Effects on Simulated Driving and Related Cognition
THC-ETOH
THC-ETOH
Sponsor study identifier
interventional
40
1 country
1
Study Start
December 2015
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
The overarching goal of this study is to characterize the effects of ethanol and cannabinoids on simulated driving and related cognition.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
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Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
March 26, 2015
Actual (reported)March 31, 2015
Actual (reported)December 2015
Date type not reportedThis date has not been verified as actual or estimated.
December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Road Tracking Error
changes in road tracking errors between timepoints to assess the effects of alcohol and THC on road tracking errors.
baseline, +20, +50, +120, +180 mins after start of alcohol and THC infusion
Biphasic Alcohol Effects Scale (BAES)
baseline, +20, +50, +120, +180, +240 mins after start of alcohol and THC infusion
Visual Analog Scale (VAS)
baseline, +20, +50, +120, +180 mins after start of alcohol and THC infusion
Cognitive Test Battery
+40 mins after start of alcohol and THC infusion
Willingness to Drive Scale
baseline, +20, +50, +120, +180 mins after start of alcohol and THC infusion
Number of Joints Scale
baseline, +20, +50, +120, +180 mins after start of alcohol and THC infusion
Low dose (0.015 mg/kg = 1.05 mg in a 70 kg individual) THC, dissolved in alcohol. This dose is roughly equivalent to smoking approximately 1/4 of a marijuana cigarette, or "joint". Administered over 20 minutes.
Control: small amount of alcohol (quarter teaspoon), with no THC. Administered over 20 minutes.
Biological Studies Unit, VA Connecticut Healthcare System
West Haven, Connecticut, 06516, United States
First Submitted
March 26, 2015
First Posted
March 31, 2015
Study Start
December 2015
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
Target BrAC of 0.04% reached over 20 minutes and then clamped to maintain this dose for an additional 60 minutes. This dose is equivalent to consuming approximately 2 drinks over 1 hour. Administered over a total of 80 minutes.
Control: no alcohol, administered for a total of 80 minutes.
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Contact the study team to confirm eligibility.
December 2026
Planned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
April 29, 2026
Record last verified: 2026-04
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Source: ClinicalTrials.gov.
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