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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04294966
Other study ID # IRB20-0112
Secondary ID
Status Completed
Phase Early Phase 1
First received
Last updated
Start date March 10, 2020
Est. completion date May 1, 2021

Study information

Verified date November 2023
Source University of Chicago
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Increased accessibility to cannabis and its primary psychoactive constituent THC has raised public health concerns. One major concern surrounds the potential risks associated with acute THC intoxication and who might be most at risk. A second major concern is the need to develop sensitive measures that can detect THC intoxication after recent use and enable robust comparisons of intoxication to determine sources of risk. One potential source of risk is age, specifically during the period of adolescence.


Description:

There is limited knowledge on the effects of THC in adolescents vs adults. One recent report compared responses to vaporized cannabis in heavy adolescent vs adult cannabis users and found that the adolescents were less sensitive to the drug on most measures. However, their findings were complicated by several factors: i) the study used vaporized cannabis, which may have other constituents and does not offer full control of the dose, ii) the participants were heavy users, making it difficult to determine the influence of prior drug exposure, and iii) the participants were not drug-free at the time of testing. Prior exposure to THC can lead to tolerance, and adolescents and adults may differ in the rate at which they develop tolerance, consistent with changes in CB1R receptor function. Our study will compare adolescent (here, aged 18 to 20) and adult (here, aged 30 to 40) responses to THC in relatively light cannabis users who are drug-free at the time of testing.


Recruitment information / eligibility

Status Completed
Enrollment 24
Est. completion date May 1, 2021
Est. primary completion date May 1, 2021
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 40 Years
Eligibility Inclusion Criteria: - 18-20 years old OR 30-40 years old - Body Mass Index 19-26 - High school education, fluent in English - Occasional cannabis users ( 0 times in past 30 days AND used cannabis no more than 20 times in lifetime) Exclusion Criteria: - History of daily cannabis use - Past or present severe substance use disorder - Current or past diagnosis with drug treatment for psychosis/bipolar/schizophrenia - Cardiovascular illness, high blood pressure, abnormal electrocardiogram - Current medications - Pregnant or planning to become pregnant

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Dextrose
Administering dextrose to healthy volunteers for our placebo group
Dronabinol
THC (Marinol® [dronabinol]; Solvay Pharmaceuticals) will be orally administered in doses of 7.5 mg and 15 mg, in opaque capsules with dextrose filler. Placebo capsules contain only dextrose. These doses of THC are known to produce performance impairments as well as subjective intoxication with little to no adverse reactions in experienced occasional, but non-daily cannabis users.
Dronabinol
THC (Marinol® [dronabinol]; Solvay Pharmaceuticals) will be orally administered in doses of 7.5 mg and 15 mg, in opaque capsules with dextrose filler. Placebo capsules contain only dextrose. These doses of THC are known to produce performance impairments as well as subjective intoxication with little to no adverse reactions in experienced occasional, but non-daily cannabis users.

Locations

Country Name City State
United States University of Chicago Chicago Illinois
United States University of Chicago Hospital Chicago Illinois

Sponsors (1)

Lead Sponsor Collaborator
University of Chicago

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Change From Baseline in Profile of Mood States (POMS) The POMS measures individuals' mood states. This is a validated scale to measure positive and negative mood states. The POMS consists of 72 mood adjectives rated on a Likert scale from 0 (not at all) to 4 (extremely), divided into 8 subscales: Friendliness, Anxiety, Elation, Anger, Fatigue, Depression, Confusion and Vigor, and two composite scales: Positive Mood (Elation minus Depression) and Arousal (Vigor plus Anxiety minus Confusion plus Fatigue). Scoring of this instrument provides a global score of 0 to 120 or individual domain scores of 0 to 20. Lower scores indicate better mood state. The POMS brief form is a simple self-rating instrument. Through Study Completion, an average of 3 weeks (Baseline - time 0 to Time point 9 (Study Completion))
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