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Behavior Brain Responses

Behavior and Brain Responses to Drugs

Status
Completed
Phases
Early Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03964350
Acronym
BBR
Enrollment
30
Registered
2019-05-28
Start date
2019-05-28
Completion date
2020-12-31
Last updated
2025-01-31

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Alcohol Drinking, Central Nervous System Depression, Drinking Behavior, Physiological Effects of Drugs

Brief summary

To compare responses to acute oral doses of ethanol in healthy young adults who experience mainly stimulant subjective effects from the drug or mainly sedative effects.

Interventions

DRUGEthanol

The 0.8 g/kg body weight dose of gelatin alcohol will be divided into an average of 10 servings of 0.08 g/kg each. The 0.8 g/kg dose is equivalent to 4 standard drinks, where a standard drink is defined as one 12 oz beer, one 5 oz glass of wine, or one 1.5 oz shot of 80 proof alcohol. The 0.4 g/kg body weight dose of gelatin alcohol will be divided into an average of 5 servings of 0.08 g/kg each. The 0.4 g/kg dose is equivalent to 2 standard drinks, where a standard drink is defined as one 12 oz beer, one 5 oz glass of wine, or one 1.5 oz shot of 80 proof alcohol.

OTHERPlacebo

The placebo comparator will be individual servings of back cheery sugar-free jello.

Sponsors

University of Chicago
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
MALE
Age
21 Years to 35 Years
Healthy volunteers
Yes

Inclusion criteria

* 21-35 years old * 4-30 alcoholic drinks per week (as reported on PHQ or TLFB) * No 'flushing' reaction to alcohol * BMI 19-26 * High school education or greater, fluent in English * No night shift work * No current or past year Axis I psychiatric disorder including drug/alcohol dependence * No current psychopharmacological treatment * No lifetime ADHD or prescription for ADHD medication * No abnormal EKG, cardiovascular illness, high blood pressure * No medical condition or pharmacological treatment for which alcohol is contraindicated * Not pregnant, lactating, or planning to become pregnant * Smoke \<6 cigarettes per day

Design outcomes

Primary

MeasureTime frameDescription
Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsAt expected peak drug effect (30 min post drink administration)Participants will complete The Drug Effects Questionnaire during the initial baseline session to determine their subjective alcohol profile. The Drug Effects Questionnaire (DEQ) is a visual analog scale questionnaire that assesses the extent to which subjects experience four subjective states : Feel Drug, Feel High, Like Drug, and Want More. All sub-scales (Feel Drug, Feel High, Like Drug, and Want More) are scored on a visual analogue scale (scroll bar on computer screen) ranging from 0-100. 100 represents the highest score for that subjective state, and the higher the score, the worse the outcome.

Countries

United States

Participant flow

Participants by arm

ArmCount
Sedative-like Effects (All Study)
Subjects that experienced more sedative like effects
15
Stimulant-like (All Study)
Subjects that experienced more stimulant-like effects
15
Total30

Baseline characteristics

CharacteristicSedative-like Effects (All Study)Stimulant-like (All Study)Total
Age, Customized
>21 years of age
15 years15 years30 years
Education - High School Education15 Participants15 Participants30 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
3 Participants3 Participants6 Participants
Race (NIH/OMB)
Black or African American
1 Participants1 Participants2 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
11 Participants11 Participants22 Participants
Region of Enrollment
United States
15 participants15 participants30 participants
Sex: Female, Male
Female
7 Participants7 Participants14 Participants
Sex: Female, Male
Male
8 Participants8 Participants16 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 300 / 300 / 30
other
Total, other adverse events
0 / 300 / 300 / 30
serious
Total, serious adverse events
0 / 300 / 300 / 30

Outcome results

Primary

Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across Sessions

Participants will complete The Drug Effects Questionnaire during the initial baseline session to determine their subjective alcohol profile. The Drug Effects Questionnaire (DEQ) is a visual analog scale questionnaire that assesses the extent to which subjects experience four subjective states : Feel Drug, Feel High, Like Drug, and Want More. All sub-scales (Feel Drug, Feel High, Like Drug, and Want More) are scored on a visual analogue scale (scroll bar on computer screen) ranging from 0-100. 100 represents the highest score for that subjective state, and the higher the score, the worse the outcome.

Time frame: At expected peak drug effect (30 min post drink administration)

ArmMeasureGroupValue (MEAN)Dispersion
Placebo (Gelatin)Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsFeel Drug3.65 units on a scaleStandard Deviation 15.9
Placebo (Gelatin)Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsFeel High3.0 units on a scaleStandard Deviation 15.9
Placebo (Gelatin)Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsLike Drug10.0 units on a scaleStandard Deviation 19.7
Placebo (Gelatin)Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsWant More10.1 units on a scaleStandard Deviation 23.6
Ethanol (0.4 g/kg)Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsWant More39.6 units on a scaleStandard Deviation 30.4
Ethanol (0.4 g/kg)Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsFeel Drug45.5 units on a scaleStandard Deviation 24.9
Ethanol (0.4 g/kg)Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsLike Drug48.3 units on a scaleStandard Deviation 22.7
Ethanol (0.4 g/kg)Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsFeel High33.7 units on a scaleStandard Deviation 27.4
Ethanol (0.8 g/kg)Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsWant More45.3 units on a scaleStandard Deviation 31.2
Ethanol (0.8 g/kg)Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsFeel High47.0 units on a scaleStandard Deviation 32.8
Ethanol (0.8 g/kg)Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsLike Drug60.9 units on a scaleStandard Deviation 22.8
Ethanol (0.8 g/kg)Change in Subjective Effects as Assessed by Score on Feel Drug, Feel High, Like Drug, and Want More Subscales of the Drug Effects Questionnaire Across SessionsFeel Drug62.3 units on a scaleStandard Deviation 20.3
p-value: <0.05ANOVA

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026