Clinical trial Recruiting at 2 sites Interventional Ages 18 and up

GPS tracking to support Hepatitis C treatment for people experiencing unsheltered homelessness.

Official title: Effects of GPS Tracking on Patient Adherence to Hepatitis C Treatment Among People Experiencing Unsheltered Homelessness

Run by University of Southern California · NCT06870019 · Data updated 2026-11-12

This trial tests whether giving GPS trackers to people with Hepatitis C who are living unsheltered and receiving street medicine helps them stick to their daily hepatitis C medication.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment124 (estimated)
SponsorUniversity of Southern California
Academic / other
Locations2 sites (Alhambra, California and 1 other locations)
StatusRecruiting
StartedAugust 8, 2025
Main results expectedDecember 31, 2026
Study endsDecember 31, 2027
Registry record updatedAugust 29, 2025
Trial IDNCT06870019 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults diagnosed with Hepatitis C who are unsheltered, speak English or Spanish, receive street medicine care, meet AASLD simplified-treatment criteria, and have not previously started HCV treatment are ideal candidates.

Probably not a fit

People who have already begun HCV treatment, have decompensated cirrhosis or other exclusion criteria (pregnancy, prior liver transplant, active hepatocellular carcinoma, or HBV infection), or who are not reachable in the study locations are unlikely to benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This randomized interventional project enrolls people with confirmed Hepatitis C who are experiencing unsheltered homelessness and receiving street medicine in Southern California. Participants are randomly assigned to receive standard Hepatitis C care delivered by street medicine teams with or without a GPS tracker device to assist outreach and follow-up. The primary outcome is medication adherence and treatment completion over the typical 8–12 week therapy course, with mixed-methods data collection to understand barriers and acceptability. The protocol emphasizes ethical, privacy-conscious use of location technology and practical approaches to longitudinal follow-up in this population.

Why it matters

Potential benefit: If successful, GPS-assisted outreach could increase adherence and completion of curative hepatitis C treatment among unsheltered individuals, reducing illness and transmission.

How similar studies have gone: Street medicine programs have shown high engagement in HCV care (for example, USC pilot data with 93% successful follow-up), but the use of GPS trackers specifically for improving adherence is relatively novel with limited prior evidence.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Diagnosed with Hepatitis C infection
* Experiencing unsheltered homelessness at study initiation
* Speaks English or Spanish
* Receiving street medicine care
* Meet the American Association for the Study of Liver Diseases (AASLD) criteria for simplified treatment of Hepatitis C

Exclusion Criteria:

* Prior engagement in HCV treatment
* Decompensated cirrhosis; HBsAg positive
* Current pregnancy; Known or suspended hepatocellular carcinoma
* Prior liver transplantation

Where it's running

  • USC Street Medicine
    Alhambra, California, United States
    Recruiting
  • Ventura County Medical Center
    Ventura, California, United States
    Recruiting

Study contacts

  • Principal investigator: Camilo Zaks, MD — University of Southern California, Keck School of Medicine of USC, Department of Family Medicine, USC Street Medicine
  • Study coordinator: Alexis Coulourides Kogan, PhD
  • Email: acoulour@usc.edu
  • Phone: 626-457-4207

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.