An interventional study of PHEN feedback and PHEN+GENE Feedback in Healthy and Alcohol Consumption, sponsored by University of Southern California. Not yet recruiting at 1 site in United States. Open to participants aged 17 Years to 25 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-06-18.
Sponsored by University of Southern California · Not applicable, Interventional, and Prevention
The goal of this study is to examine the effects of providing personalized information about behavioral, physical, and genetic factors that are associated with elevations in risk for some health problems. The main research question is: can we affect young adult behaviors through communication about these health-related risks? Participants will be asked to complete an in-person baseline session where they provide a DNA sample, complete online surveys, and do a brief interview. They will then receive one of several brief online information sessions and be followed in online surveys approximately every 3 months over the next 2 years.
701 studies on the registry are indexed under Alcohol Drinking; 133 are open to participants now.
This study's planned enrollment of 450 is above the median of 122 across 607 interventional studies indexed under Alcohol Drinking.
Browse Alcohol Drinking studies →University of Southern California is the lead sponsor of 791 studies on the registry; 136 are open to participants now.
Of its 70 completed or terminated interventional studies of FDA-regulated products, 32 (46%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
provided phenotypic feedback
Behavioral: PHEN feedback
provides genotypic feedback
Behavioral: PHEN feedback · Genetic: PHEN+GENE Feedback
provided a control feedback
Other: Control
Feedback on alcohol response (phenotype)
Feedback on both phenotype and genotype (PHEN+GENE)
Feedback that serves as control
Drinking frequency
Number of days consumed alcohol
Time frame: up to 2 years post-intervention
Average alcohol quantity
Average amount of alcohol consumed on drinking days
Time frame: up to 2 years post-intervention
Amount of alcohol consumed
Total number of drinks consumed
Time frame: up to 2 years post-intervention
Maximum daily alcohol
Highest number of drinks consumed on one day
Time frame: up to 2 years post-intervention
Use of flush cures
Proportion of drinking days used flush cures
Time frame: up to 2 years post-intervention
Use of drinking behavioral strategies
Proportion of drinking days used behavioral strategies
Time frame: up to 2 years post-intervention
Plan to share: Yes — For participants who agree to have their data included, de-identified participant data will be uploaded to the National Institute of Mental Health Data Archive (NDA).
Supporting information: Study protocol, Statistical analysis plan, Informed consent form
Time frame: Data will be available no later than 2 years post-study completion and will be available indefinitely.
Access criteria: Access will be made in accordance with NDA regulations.
No publications or documents are linked to this record.
Start is estimated for Aug 2026; primary completion for Feb 2029, 30 months later.
Of 328 non-industry interventional studies with no phase under Alcohol Drinking, half reached primary completion within 24 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 45. This study's planned 30 months is above that.
Counting every sponsor, half of 336 studies reached it within 24 months; a quarter within 10 and three quarters within 45.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.
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