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.

NCT Number	NCT07433985
Lead Sponsor	University of California, Los Angeles Collaborators: National Institute on Drug Abuse (NIDA), University of California, Berkeley, Charles Drew University of Medicine and Science, Starting Over, Inc, Kindful Restoration, CAL-PEP
Conditions	HIV Prevention, Sexually Transmitted Infections (STI), Preexposure Prophylaxis (PrEP), Incarceration, Hepatitis C Virus (HCV), Substance Use Disorder (SUD)
Enrollment	318 participants
Start Date	2025-12-01
Primary Completion	2029-07-31 (estimated)
Study Completion	2029-07-31 (estimated)
Updated on ClinicalTrials.gov	2026-04-03