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Showing 1–24 of 77 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: High Risk Sex Behavior Clear all
Completed Not applicable Interventional Accepts healthy volunteers

MyLife MyStyle Evaluation Project

NCT01640392
View directory record Official record
Conditions
Unsafe Sex
Interventions
MyLife MyStyle group-level intervention
Behavioral
Lead sponsor
Los Angeles County Department of Public Health
Government
Eligibility
18 Years to 29 Years · Male only
Enrollment
528 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 14, 2019 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

No Excuses/Sin Buscar Excusas Intervention to Reduce Latino Men's HIV Risks

NCT00690690
View directory record Official record
Conditions
HIV Infections
Interventions
Video (group-delivered video-based intervention), HCT
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
18 Years to 49 Years · Male only
Enrollment
370 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 8, 2010 · Synced Sep 10, 2026, 4:14 PM EDT
Terminated Phase 2 Interventional Results available

Prophylactic White Cell Transfusions Versus Therapeutic White Cell Transfusions in Patients With Leukemia

NCT01204788
View directory record Official record
Conditions
Leukemia
Interventions
Prophylactic White Cell Transfusion, Therapeutic White Cell Transfusion
Procedure
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
2 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 9, 2015 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional

A Structural HIV Prevention Intervention Targeting High-risk Women

NCT04413591
View directory record Official record
Conditions
Sex Work
Interventions
Community based combination HIV prevention package
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years and older · Female only
Enrollment
385 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 4, 2022 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Intervention for Substance Use and Sexual Risk Behavior in Homeless Youth

NCT03735784
View directory record Official record
Conditions
Substance Use, Unprotected Sex
Interventions
AWARE
Behavioral
Lead sponsor
RAND
Other
Eligibility
18 Years to 25 Years
Enrollment
276 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
3
States / cities
Hollywood, California • Los Angeles, California • Venice Beach, California
Source: ClinicalTrials.gov public record
Updated Jun 20, 2021 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Phase 3 Interventional

Directly Observed Therapy in High Risk Populations in Newark, NJ

NCT00285883
View directory record Official record
Conditions
Directly Observed Therapy, HIV Infections
Interventions
Invirase, Norvir
Drug
Lead sponsor
Saint Michael's Medical Center
Other
Eligibility
18 Years and older · Male only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Newark, New Jersey
Source: ClinicalTrials.gov public record
Updated Feb 27, 2006 · Synced Sep 10, 2026, 4:14 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Individual and Contextual Factors That Influence Sexual Decisions

NCT03224416
View directory record Official record
Conditions
Binge Drinking, Unsafe Sex, HIV/AIDS, Sexually Transmitted Diseases
Interventions
Alcohol Administration, Placebo Alcohol Administration, No Alcohol Administration
Other
Lead sponsor
Brown University
Other
Eligibility
21 Years to 35 Years · Male only
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jul 20, 2017 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Friendship Based HIV/STI (Sexually Transmitted Infections) Intervention for African American Females

NCT00109421
View directory record Official record
Conditions
Sexual Behavior, Sexually Transmitted Diseases, HIV Infections
Interventions
Project ÒRÉ
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
14 Years to 21 Years · Female only
Enrollment
420 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 27, 2017 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Improving Engagement in HIV Care for High-risk Women

NCT03081559
View directory record Official record
Conditions
HIV/AIDS, Adherence, Medication
Interventions
Healthy Divas
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older · Male only
Enrollment
278 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
2
States / cities
Los Angeles, California • San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 15, 2020 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effectiveness of an HIV Prevention Program That Targets the Inner Workings of High-risk Social Networks

NCT00705705
View directory record Official record
Conditions
HIV Infections
Interventions
Network leader training, Standard HIV risk-reduction counseling
Behavioral
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Enrollment
852 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 10, 2011 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Proyecto SOL: A Risk Reduction Intervention for Hispanic Men Who Have Sex With Men (MSM)

NCT00690976
View directory record Official record
Conditions
HIV Infections
Interventions
Proyecto SOL, HCT
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
18 Years to 49 Years · Male only
Enrollment
220 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Mar 10, 2010 · Synced Sep 10, 2026, 4:14 PM EDT
Withdrawn No phase listed Observational

A Non-Interventional Pilot Study to Explore the Role of Gut Flora in Autism

NCT04100863
View directory record Official record
Conditions
Autism, Autism Spectrum Disorder, Autistic Disorder, Autism, Akinetic, Autism; Atypical, Autism; Psychopathy, Autism Fragile Syndrome X, Autism With High Cognitive Abilities, Autism-Related Speech Delay, Autism, Susceptibility to, 6, Autism Spectrum Disorder High-Functioning, Autistic Thinking, Autism, Susceptibility to, X-Linked 6, Autistic Behavior
Interventions
No Intervention
Other
Lead sponsor
ProgenaBiome
Other
Eligibility
6 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2030
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Jun 4, 2025 · Synced Sep 10, 2026, 4:14 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Evaluating a Digital Intervention to Improve Adolescent Condom Use and Communication

NCT06878755
View directory record Official record
Conditions
Condomless Sex, Sexual Assault
Interventions
Promoting Assertive Communication among Teens (PACT), Healthy Minds
Other
Lead sponsor
North Carolina Agriculture & Technical State University
Other
Eligibility
14 Years to 17 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Greensboro, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Group Therapies for Reducing HIV-risk Behavior in Women Who Have Survived Childhood Sexual Abuse

NCT00220597
View directory record Official record
Conditions
Alcoholism, Child Abuse, Sexual, Sexual Abuse, Sexual Behavior, Sexually Transmitted Diseases, Viral
Interventions
Trauma-focused group therapy
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older · Female only
Enrollment
171 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2004
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 2, 2013 · Synced Sep 10, 2026, 4:14 PM EDT
Completed No phase listed Observational

Education Program to Reduce Risky Behavior in Adolescents Ph I

NCT05607784
View directory record Official record
Conditions
Risky Sexual Behavior, Emotional Regulation, Adolescent Behavior
Interventions
Formative Research- Content Translation, Formative Research- Content Feedback and Acceptability
Behavioral
Lead sponsor
Klein Buendel, Inc.
Industry
Eligibility
12 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
3
States / cities
Golden, Colorado • Eugene, Oregon • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 14, 2023 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Evaluation of Pulse: A Mobile Health App and Teen Pregnancy Prevention Program

NCT04043130
View directory record Official record
Conditions
Unprotected Sex, Contraceptive Usage
Interventions
Pulse
Behavioral
Lead sponsor
Child Trends
Other
Eligibility
18 Years to 20 Years · Female only
Enrollment
2,317 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 15, 2020 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Phase 1 Interventional Results available

Bupropion For Reducing High-Risk Behaviors in Depressed Men Who Have Sex With Men (MSM)

NCT00285584
View directory record Official record
Conditions
HIV Infections, Depression
Interventions
Bupropion, Placebo
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older · Male only
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2004
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 11, 2017 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluating a Real-Time, Remote Monitoring System for Home-Based HIV Testing

NCT02876926
View directory record Official record
Conditions
HIV
Interventions
"Smart" home-based test for HIV, Home-based testing only, Reminder letters for clinic-based testing
Behavioral
Lead sponsor
Brown University
Other
Eligibility
18 Years and older · Male only
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 18, 2019 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional

An Evaluation of Re:MIX: a Teen Pregnancy Prevention Program With Young Parents as Peer Educators, EngenderHealth

NCT03114410
View directory record Official record
Conditions
Sexual Behavior, Unprotected Sex
Interventions
Re:MIX, a multi-layer comprehensive teen pregnancy prevention intervention aimed at reducing pregnancy and STIs among youth ages 13-17
Behavioral
Lead sponsor
Child Trends
Other
Eligibility
12 Years to 18 Years
Enrollment
621 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Apr 30, 2020 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluation of Rapid HIV Self-testing Among MSM (eSTAMP)

NCT02067039
View directory record Official record
Conditions
HIV Infection
Interventions
OraQuick in home & Sure Check HIV tests
Device
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
18 Years and older · Male only
Enrollment
2,665 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 30, 2020 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional

Evaluation of High School-based Relationship Education

NCT03559855
View directory record Official record
Conditions
Responsible Sex
Interventions
Real Essentials
Behavioral
Lead sponsor
University of Denver
Other
Eligibility
Not listed
Enrollment
1,135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 22, 2021 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Protecting Our Future Generation: Promotion of Protective Sexual Health Practices Among Native American Youth and Young Adults Through an Assets-based Self-care Intervention

NCT03895320
View directory record Official record
Conditions
Sexual Behavior, Unprotected Sex, Gonorrhea, Chlamydia, Trichomonas, Sexually Transmitted Diseases, Adolescent Behavior, Self Evaluation
Interventions
Sexual Health Risk Assessment, Sexual Health Score, Sexual Health Messaging, Water SSB Quiz, Water SSB Score, Water SSB Messaging, STI Screening
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
14 Years to 26 Years
Enrollment
219 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Whiteriver, Arizona
Source: ClinicalTrials.gov public record
Updated Feb 22, 2024 · Synced Sep 10, 2026, 4:14 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Moon and Sun Brothers: A Community Prevention Intervention (Hermanos de Luna y Sol)

NCT07475702
View directory record Official record
Conditions
Help-Seeking Behavior, Pre-exposure Prophylaxis Use, Condomless Sex, Risky Health Behavior
Interventions
Moon and Sun Brothers: A Community Prevention Intervention
Behavioral
Lead sponsor
San Francisco State University
Other
Eligibility
18 Years and older
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
2
States / cities
San Francisco, California • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced Sep 10, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Game Plan for PrEP

NCT04973267
View directory record Official record
Conditions
Human Immunodeficiency Virus Exposure, Alcohol; Harmful Use
Interventions
Game Plan for PrEP, Attention-Matched Control Lifestyle Habits Videos
Behavioral
Lead sponsor
Brown University
Other
Eligibility
18 Years and older · Male only
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Aug 27, 2024 · Synced Sep 10, 2026, 4:14 PM EDT