Clinical Research Directory
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54 clinical studies listed.
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Tundra lists 54 HIV Prevention clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.
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NCT07509853
Integrating Sexual Pleasure Into Harm Reduction Services for Men Who Have Sex With Men and Transgender Persons Who Engage in Chemsex or Substance Use in Thailand
The study evaluates the integration of a sexual pleasure-based approach into harm reduction services for MSM and transgender persons engaging in chemsex or substance use in Thailand, using the "Pleasuremeter" tool to improve sexual health and related outcomes.
Gender: All
Ages: 18 Years - Any
Updated: 2026-04-08
1 state
NCT07505875
Pre-implementation Study to Develop Trans-tailored Services for Transgender Persons in Relation to chemsEX
The study is a pre-implementation cross-sectional study exploring chemsex behaviors among transgender persons and gathering perspectives from multiple stakeholders to inform the development of transgender-tailored harm reduction services.
Gender: All
Ages: 18 Years - Any
Updated: 2026-04-06
1 state
NCT07512869
Host Led Harm Reduction Approach Among Men Who Have Sex With Men Who Engaged in Chemsex in Bangkok, Thailand: A Pre-Implementation Study
This study evaluates the pre-implementation phase of a host-led harm reduction model for men who have sex with men (MSM) engaging in chemsex in Bangkok, Thailand, focusing on understanding harms, contexts, and needs to develop a tailored intervention.
Gender: MALE
Ages: 18 Years - Any
Updated: 2026-04-06
1 state
NCT07512856
The Implementation of a Trans-tailored Harm Reduction Service for Transgender Persons in Relation to chemsEX and Substance Use (iT-REX)
This study evaluates a comprehensive transgender-tailored harm reduction service for transgender women, transgender men, and non-binary individuals engaging in chemsex or substance use in Thailand, focusing on PrEP uptake, HIV/STI outcomes, mental health, and socio-legal impacts.
Gender: All
Ages: 18 Years - Any
Updated: 2026-04-06
1 state
NCT07510048
Combatting HIV Or Other STIs Early (CHOOSE) in an RCT of mHealth Tool Support
The overarching goal of this project is to optimize the PrEP Choice integrated mHealth package and assess the efficacy and cost of PrEP Choice on PrEP initiation and adherence among young people. It is hypothesized that PrEP Choice will improve HIV PrEP uptake and adherence among young people and will be cost-effective to deliver to young people in the United States (U.S.). This study will also assess the uptake, adherence, and acceptability of DoxyPEP among young people.
Gender: MALE
Ages: 13 Years - 24 Years
Updated: 2026-04-03
6 states
NCT07509827
Evaluation of mHealth Intervention to Promote HIV Prevention and Overcome Stigma Among Transgender Women (EMPOW.HER)
This study aims to develop and evaluate a multi-component mHealth intervention (mHC and FRESH) to reduce HIV-related and intersectional stigma and improve PrEP use among HIV-negative young transgender women (TGW) in Thailand.
Gender: MALE
Ages: 18 Years - 29 Years
Updated: 2026-04-03
3 states
NCT07433985
California MEPS Hub
The California Hub for HIV/SUD Prevention Research with Reentry Populations addresses the question: "Can the evidence-based MEPS intervention be adapted and implemented at a range of organizations to effectively serve a wider range of clients?" The Mobile Enhanced Prevention Support (MEPS) intervention was originally implemented in Los Angeles County and was proven successful in promoting biomedical HIV prevention (PrEP) uptake and preventative screenings in people who used drugs who recently left incarceration. MEPS is an evidence-based intervention for people with substance use disorders (SUD) that incorporates a client-centered planning session, including trained peer mentors, service utilization incentives, and a mobile application (GeoPass). The study includes a randomized controlled trial (RCT) across three community partners located in Riverside and Alameda Counties. At least 300 people will be enrolled in these three counties; the first 200 will be randomized to either receive the intervention or usual care, with the final 100 all receiving the intervention. The primary implementation outcome for the study involves using an implementation science framework and assessment tools to examine MEPS's implementation. Key outcomes include how well the implementation strategies used support intervention enrollment and retention, integration with existing services in each partnering community agency, and perceived intervention acceptability, feasibility, appropriateness, and maintenance at 6- and 12-months. The primary effectiveness outcome for the study is an increase in HIV testing, PrEP uptake and adherence, and SUD service utilization at 6 months and 12 months in the MEPS compared to the usual care group. Secondary effectiveness outcomes include frequency of service use for SUDs, hepatitis C virus testing, and linkage to care for those who test positive for HIV or hepatitis C.
Gender: MALE
Ages: 18 Years - 59 Years
Updated: 2026-04-03
1 state
NCT05018611
Digital Limited Interaction Efficacy Trial of LifeSkills Mobile to Reduce HIV Incidence in YTW
The LifeSkills Mobile app will be evaluated in a randomized controlled trial (RCT) among 5,000 young transgender women (YTW), ages 16-29 in the United States (U.S.). Study findings will demonstrate if the intervention will reduce HIV incidence.
Gender: MALE
Ages: 16 Years - 29 Years
Updated: 2026-03-31
1 state
NCT07467018
Mobile Vehicle-Based Delivery of Lenacapavir PrEP in Los Angeles County
This project evaluates the implementation strategy of the delivery of lenacapavir pre-exposure prophylaxis (LEN PrEP) - a newly available long-acting, injectable medication for HIV prevention - via a mobile health van model for people who are unstably housed in Los Angeles County. People who are unhoused or are facing housing instability experience significant barriers to accessing HIV prevention care in traditional clinic settings. In 2022, approximately 13% of newly diagnosed HIV cases in Los Angeles County were experiencing homelessness, a 36% increase over the prior period. We will work with UCLA Health's Homeless Healthcare Collaborative (HHC), which operates mobile health vans staffed by clinicians, social workers, and community health workers, to bring LEN PrEP directly to community settings, such as shelters, encampments, community centers, and transitional housing facilities. This study has three primary aims: 1. Characterize uptake of LEN PrEP among unstably housed people in Los Angeles County receiving health services via HHC's mobile program. 2. Evaluate how many study participants stay on LEN PrEP through 52 weeks. 3. Understand costs, acceptability, and sustainability of the mobile LEN PrEP delivery model.
Gender: All
Ages: 18 Years - Any
Updated: 2026-03-27
1 state
NCT06703060
A Multi-Level Trauma-Informed Approach to Increase HIV Pre-exposure Prophylaxis Initiation Among Black Women
U.S. epidemiological data indicates that Black women are a high-risk HIV disparity group, yet initiation of novel prevention strategies like pre-exposure prophylaxis (PrEP) among this group is stagnant. Socio-structural challenges like intimate partner violence and gendered racism can constrain PrEP access among Black women, but few implementation studies have mitigated these challenges to improve PrEP initiation. The proposed research aims to implement and assess the effectiveness, implementation, and sustainability of a multilevel intervention to increase PrEP initiation among Black women with and without intimate partner violence in Baltimore.
Gender: FEMALE
Ages: 18 Years - Any
Updated: 2026-03-23
1 state
NCT07194902
HIV Self-testing for Partners of HIV-uninfected Postpartum Women
The purpose of this study is to test the feasibility and acceptability of a combination intervention to promote HIV self-testing (HIVST) for Partners and PrEP uptake for HIV-uninfected Postpartum Women ("H4P"). H4P includes evidence-based cognitive behavioral therapy (CBT) strategies, such as communication skills training, motivational interviewing, and problem-solving. The investigators will conduct a randomized pilot trial of the H4P intervention to evaluate the feasibility, acceptability, and preliminary effectiveness of a multi-step PrEP uptake and HIV self-test kit intervention for postpartum HIV-uninfected women (N = 60 and their male partners) who report a partner of unknown serostatus, and their partners, in the province of KwaZulu-Natal, South Africa.
Gender: All
Ages: 18 Years - Any
Updated: 2026-03-23
1 state
NCT07292584
Evaluating an Interactive Digital Toolkit for Women's PrEP Implementation
The goal of this study is to test if a Digital PrEP Toolkit helps cisgender women learn about and access PrEP in Alabama and Mississippi. PrEP is a medication that prevents HIV infection. The main questions it aims to answer are: Can participants complete the Digital PrEP Toolkit in under 10 minutes? Do participants find the Digital PrEP Toolkit useful and easy to use? Does the Digital PrEP Toolkit increase the number of women who start taking PrEP? Investigators will work with up to 125 women at 3 HIV and STI clinics in Alabama and Mississippi. Participants will use the Digital PrEP Toolkit on a tablet at the clinic. They will answer questions about their HIV knowledge before and after using the Toolkit. Participants will then discuss PrEP options with a healthcare staff member and decide if they want to start PrEP. Participants will answer follow-up questions at 3 months. Investigators will also review participants' medical records at 6 months to see if they started PrEP and are still taking it.
Gender: FEMALE
Ages: 18 Years - Any
Updated: 2026-03-19
2 states
NCT07133555
Safe Spaces 4 Sexual Health
In an earlier study, the study team carried out an HIV/Sexually transmitted infection (STI) testing approach which found men who have sex with men (MSM) at-risk of getting or spreading HIV in online spaces and linked them to testing services on a mobile van. The goal of this present study is to add on to this approach by connecting participants (MSM aged 18-49 residing in the Baltimore area) with a peer health navigator to support them with getting pre-exposure prophylaxis (PrEP) or HIV care services after testing. Researchers will compare using a peer health navigator approach to using a referrals-only approach to get PrEP or HIV care services. Participants will be assigned to either Arm A (group that receives peer health navigator help) or Arm B (group that gets referred) to get PrEP or HIV care.
Gender: MALE
Ages: 18 Years - 49 Years
Updated: 2026-03-17
1 state
NCT04979728
HIV Outpatient Monitoring Evaluation Through Self-collection of Dried Blood Spots
The goal of this observational study is to establish an operational framework for home self-collections of blood samples to be used for antiviral drug concentration measurements. Participants will continue on their prescribed antiviral(s) for HIV treatment or prevention and followed for up to approximately 1 year. The investigators will compare drug concentrations of antivirals and relevant metabolites/anabolites in clinic-collected and self-collected blood samples.
Gender: All
Ages: 18 Years - Any
Updated: 2026-03-03
1 state
NCT06638892
Using PrEP, Doing It for Ourselves
The goal of this clinical trial is to test a new online program called UPDOs Protective Styles to help people in the southeastern United States learn about and start using PrEP (pre-exposure prophylaxis), a medicine that helps prevent HIV. The study focuses on people who may be at higher risk for HIV and have not had equal access to PrEP. The main questions it aims to answer are: Does UPDOs help more people trust and understand PrEP? Does UPDOs increase the number of people who start and continue using PrEP? Researchers will compare two groups: One group will use UPDOs, which includes six weekly videos, blog discussions, and access to telehealth services through Q Care Plus. The other group will receive standard HIV prevention materials from the CDC. Participants will: Be recruited from 32 beauty salons in areas with high HIV rates. Complete surveys at the start of the study and again at 6, 12, 24, 32, and 52 weeks. Have access to HIV testing and PrEP prescriptions through Q Care Plus. This study will also look at how well the program works in different communities and how easy it is to use and share.
Gender: FEMALE
Ages: 18 Years - Any
Updated: 2026-03-03
1 state
NCT07231640
PrOTECT AL: PrEP Optimization Through Enhanced Continuum Tracking
The purpose of this study is to enhance and evaluate the implementation of a PrEP Care Continuum data dashboard across seven distinct clinical sites in Alabama. By leveraging real-time data and fostering collaborative partnerships, this project aims to accurately visualize care disparities, allocate resources strategically, identify and address care gaps in the delivery of PrEP services, and gauge its impact on HIV prevention efforts.
Gender: All
Ages: 18 Years - Any
Updated: 2026-02-20
1 state
NCT06864689
Leveraging Video Logs as a Bridge to Pre-exposure Prophylaxis (PrEP) With Tailored Messaging to Black Women and Their Healthcare Providers in Texas.
The primary objective of this R34 proposal is to increase willingness for PrEP initiation and PrEP initiation among Black Women (BW) and increase willingness to prescribe/refer pre-exposure prophylaxis (PrEP) to CBW among healthcare providers (HCPs) in Houston/Harris County, a high priority Ending the HIV Epidemic (EHE) jurisdiction.
Gender: FEMALE
Ages: 18 Years - 99 Years
Updated: 2026-02-17
1 state
NCT07074899
Evaluation of a Multi-Component Intervention to Support HIV Testing and Linkage to Services Among MSM in Peru
This study is testing a new program designed to improve access to HIV testing and help connect people with available treatment or prevention services, based on their test result. The version of the program being tested in this study was designed for men who have sex with men (MSM) in Lima, Peru. The program has two main parts: 1) offering HIV testing at venues where people go for sex (called "sex-on-premises venues" or SOPVs), and 2) a text messaging app that shares useful information about HIV treatment/prevention; users can also message back to get support from a healthcare worker. Before doing this study, the researchers worked with community members and healthcare providers in the area to make sure that the HIV testing approach and mobile app were designed in a way that would be engaging and meet their needs. Every Thursday, Friday, and Saturday night during recruitment, the researchers will go to SOPVs popular among the MSM community in Lima and invite people to take an HIV test. On each recruitment date, they will offer one of the following HIV testing options: 1. A rapid HIV test done on-site (participants will get their result right away) 2. An HIV self-testing kit to take home 3. A coupon for a free HIV test at a participating health center 4. Their choice of any one of the previous three options Only one of these options will be offered at a time, depending on the date. The specific HIV testing option offered on each date will be randomly assigned. All participants will receive the mobile app, which will send weekly messages with links to different types of online content (infographics, maps, videos) over the next 3 months. The specific sequence of messages and content will be different depending on the type of HIV test the person received and their HIV test result, once it is known. The study will measure two main outcomes related to the acceptability and feasibility of the program: * The number and percentage of people who accept the program when offered * The number and percentage of participants who continue to engage with the mobile app after 3 months The study will also measure: * overall satisfaction with the app (based on a questionnaire sent at 3 months) * the number and percentage of participants who completed any form of HIV testing after 3 months * the number and percentage of participants who started HIV treatment (out of those with a positive HIV test) * the number and percentage of participants who started HIV pre-exposure prophylaxis, or "PrEP" (out of those with a negative HIV test) All follow-up will be done remotely. Participants will have the app for 3 months. After 3 months, they will get a follow-up questionnaire asking about their experiences with the program. The researchers will keep tracking results related to the HIV treatment/prevention services that people receive for up to 6 months.
Gender: MALE
Ages: 18 Years - Any
Updated: 2026-02-13
1 state
NCT07349758
Evaluation of Single Dosing With Two F/TAF Tablets Among Healthy Volunteers
The goal of this study is to evaluate the pharmacokinetics of a one-time dosing of two F/TAF tablets over a 14-day period.
Gender: All
Ages: 18 Years - Any
Updated: 2026-02-13
1 state
NCT07409350
A Social Network Approach to Improve HIV Prevention and Substance Use Treatment For People Who Use Drugs
This study includes finalization of the LINKED social network intervention to improve PrEP and MOUD uptake among people who inject drugs (PWID) in collaboration with an Expert Advisory Board and staff (N=16) at The Sidewalk Project (TSP), followed by a Hybrid Type II cluster randomized trial of the LINKED intervention (versus an equal-attention control) among N=372 people who inject drugs, with 6- and 12-month follow-up assessment of PrEP and MOUD uptake. The investigators will also evaluate implementation outcomes to inform future sustainable implementation of LINKED in harm reduction organizations.
Gender: All
Ages: 18 Years - Any
Updated: 2026-02-13
3 states
NCT06845774
The PROTECT (PrEP Optimization Through Telehealth Care and Treatment) Trial
The expansion of HIV pre-exposure prophylaxis (PrEP) care has been endorsed as a key strategy for reducing new HIV infections, however, PrEP trials among people who inject drugs (PWID) are rare and uptake of PrEP has been minimal, most notably in rural areas. Structural barriers to healthcare access, lack of providers, and inadequate infrastructure to deliver PrEP are challenges in many rural areas. In addition, PWID often have social determinant barriers to PrEP care. This study will integrate telehealth PrEP care within syringe services programs (SSPs), a venue already routinely accessed by PWID, to reduce structural barriers to evidence-based HIV prevention through co-located comprehensive PrEP services, and test this against a standard of care approach in a pilot randomized clinical trial. The primary objective is to examine preliminary efficacy and effect sizes of novel integrated telehealth care versus standard education and active referral on the primary outcome of PrEP initiation in HIV-negative participants who inject drugs.
Gender: All
Ages: 18 Years - 99 Years
Updated: 2026-02-12
1 state
NCT07136363
RESTORE Study R61 Phase: Recovery and Engagement for Stimulant Users on Re-entry
Justice-involved individuals face disproportionately high rates of stimulant use disorder and HIV, along with disrupted access to HIV treatment and prevention services like ART and PrEP. Contingency management (CM) is the most effective intervention for stimulant use, but its use in justice-involved populations has been limited by logistical and structural barriers. DynamiCare is an FDA-approved mobile app that delivers behavioral CM and has shown promise in reducing stimulant use, but its impact on HIV-related outcomes remains unknown. The RESTORE study (Recovery and Engagement for Stimulant Users on Re-entry) will evaluate whether combining DynamiCare with patient navigation (DynamiCare-plus) improves PrEP/ART initiation and reduces stimulant use among individuals recently released from justice settings. The R61 phase will assess feasibility, acceptability, and preliminary effectiveness among 40 participants. If milestones are met, the R33 phase will scale to a randomized controlled trial with 252 participants to assess effectiveness, implementation, and cost. This scalable, mobile approach has the potential to address a critical gap in care for a highly vulnerable population.
Gender: All
Ages: 18 Years - Any
Updated: 2026-02-11
2 states
NCT04899024
PrEP Affect Regulation Treatment Innovation
This multi-site randomized controlled trial enrolling sexual minority men who use stimulants and are currently taking pre-exposure prophylaxis (PrEP). This randomized controlled trial will test the efficacy of a PrEP Affect Regulation Treatment Innovation (PARTI) condition comprised of a 5-session positive affect intervention delivered during smartphone-based Contingency Management (CM) for directly observed PrEP doses (PARTI+CM) compared to an attention-control condition delivered during CM. The primary outcome is HIV acquisition risk measured using a combination of tenofovir-diphosphate levels in dried blood spots that are indicative of sub-optimal adherence to PrEP and recent condomless anal sex.
Gender: MALE
Ages: 18 Years - Any
Updated: 2026-02-06
2 states
NCT07218211
Enhancing PrEP Uptake and Retention Among Latine TGW and GBM in the South Using Long-Acting Injectable PrEP
The purpose of this project is to test a culturally-tailored, community-delivered long-acting injectable PrEP (lenacapavir) program for Latine gay and bisexual men (GBM) and transgender women (TGW). The objective is to evaluate whether this intervention demonstrates greater persistence on lenacapavir for Latine GBM and TGW compared with what has been observed historically at the Duke PrEP Clinic.
Gender: MALE
Ages: 18 Years - Any
Updated: 2026-02-02
1 state