CClinicalTrials.gg
Status unknownNCT04855773PCORI PrEPUpdated Sep 28, 2022

Comparing Mobile Health Strategies to Improve Pre-exposure Prophylaxis Use (PrEP) for HIV Prevention

An interventional study of PrEPmate and Dot Diary in HIV Infections and Sexually Transmitted Diseases, sponsored by Public Health Foundation Enterprises, Inc.. Status unknown at 4 sites in United States. Open to participants aged 15 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-09-28.

Sponsored by Public Health Foundation Enterprises, Inc. · Not applicable, Interventional, and Other

The sponsor has not verified this record recently (last verified Sep 2022), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
300
Allocation
Randomized
Ages
15 Years and older
Sex
All
01

Study summary

The purpose of this study is to compare the effectiveness of two mobile health technologies (text messaging or a mobile app) designed to help people take HIV pre-exposure prophylaxis (PrEP) as directed by the clinic. PrEP is the use of a daily anti-HIV medications by HIV-negative people to help prevent HIV infection.

Read the detailed description

This is a clinic-based, multi-site, randomized, two-arm study to compare the effectiveness of two mobile technologies designed to support PrEP adherence and continuation in cisgender and transgender men who have sex with men (MSM) and transgender women (TGW). All study participants will receive PrEP per standard of care at each of the study sites.

Participants randomized to PrEPmate will receive an interactive bidirectional text-messaging intervention that supports PrEP use through personalized communication between patients and providers. Key components include (1) weekly short message service (SMS) check-ins and a bidirectional SMS messaging platform; (2) customized daily SMS pill-taking reminders; (3) link to online PrEP Basics and videos and testimonials.

Participants randomized to Dot Diary will receive a mobile app that promotes self-management of PrEP use and sexual health. Key components include (1) a digital pill-taking and sexual diary, with pill-taking reminders; (2) sex-positive badges earned via app use; and (3) real-time feedback on protection levels afforded by PrEP. Each participant will be followed for approximately 12 months. Staff at the participating clinics will also participate in in-depth interviews to give feedback on implementation challenges and experiences in the clinic-setting, and experience working with patients using the mobile technologies.

02

Conditions studied

  • HIV Infections
  • Sexually Transmitted Diseases

Keywords

  • Pre-exposure Prophylaxis (PrEP)
  • HIV Prevention
  • Mobile health (mHealth)
  • Medication adherence
03

In context

Sexually Transmitted Diseases

424 studies on the registry are indexed under Sexually Transmitted Diseases; 71 are open to participants now.

This study's planned enrollment of 300 is below the median of 470 across 346 interventional studies indexed under Sexually Transmitted Diseases.

Browse Sexually Transmitted Diseases studies →

Lead sponsor

Public Health Foundation Enterprises, Inc. is the lead sponsor of 15 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
15 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Self-identifies as a cisgender man, transgender man (assigned female at birth, trans-masculine spectrum), or transgender woman (assigned male sex at birth, trans-feminine spectrum)
  • Report sex with a cisgender man or transgender woman or any individual assigned male sex at birth in the past 12 months
  • Age 15 years or older
  • Willing and able to provide written informed consent
  • Owns an iOS or Android mobile phone and able to access the internet and send and receive text messages
  • Able to understand, read, and speak English or Spanish
  • Newly initiated PrEP or currently on PrEP and at risk for PrEP discontinuation based on at least one of the following:

    • Initiated PrEP within the past 6 months, or
    • Has any of the following risk factors for PrEP discontinuation: missed clinic visits; age \< 30; African-American or Latino; transgender gender identity; or self-reported illicit substance use

Exclusion criteria

Exclusion Criteria:

  • Currently enrolled in another PrEP intervention study
  • Unable to complete 12 month study participation
  • Any medical, psychiatric, or social condition or other responsibilities that, in the judgment of the investigator, would make participation in the study unsafe, complicate interpretation of study outcome data, or otherwise interfere with achieving the study objectives.
05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
300 participants (estimated)

Study arms

  • Experimental
    PrEPmate

    Participants randomized to this study arm will receive the PrEPmate mHealth intervention (bi-directional text messaging with PrEP navigators/clinic staff) to support PrEP adherence and continuation.

    Other: PrEPmate

  • Experimental
    Dot Diary mobile application

    Participants randomized to this study arm will download and use the Dot Diary mobile application on a personal device, to support PrEP adherence and continuation.

    Device: Dot Diary

Interventions

  • OtherPrEPmate

    PrEPmate is a multi-component mHealth intervention grounded in the information, motivation, behavioral skills (IMB) theory of behavior change and developed through user-centered design. PrEPmate promotes personalized communication between patients and providers through interactive weekly "check-in" messages asking participants how PrEP is going, allowing navigators to identify patients needing more help in taking PrEP, and customized daily pill-taking reminder messages. Trained PrEP navigators reach out to participants who indicate they need assistance via text or phone call and provide tailored support. Additionally, the platform supports 2-way communication between patients and PrEP navigators, including reminders for upcoming clinic visits. Participants are provided links to key information about PrEP (PrEP Basics), and video testimonials of peers taking PrEP. Messages are available in English and Spanish. PrEPmate is aimed at both patients and PrEP navigators.

  • DeviceDot Diary

    Dot Diary is a mobile phone app that integrates an electronic pill-taking and sex diary and delivers real-time feedback on PrEP protection. Using the self-management model to increase self-efficacy and patient empowerment, participants log daily PrEP pill-taking and sexual behaviors in the app, which then provides real-time feedback on the level of protection achieved from PrEP (high, medium, low), and customized instructions on doses of PrEP needed to achieve or maintain high protection. Participants can also view a weekly and monthly calendar, including visualizations of the proportion of sex acts covered by PrEP. Finally, the Dot Diary app incorporates gamification components, including an ability to earn sex-positive badges, to increase engagement. Dot Diary is aimed only at patients.

06

What researchers measure

Primary outcomes

  1. PrEP adherence as measured by tenofovir diphosphate levels in dried blood spots

    PrEP adherence will be measured by tenofovir diphosphate (TFV-DP) levels in dried blood spots (DBS). Adequate adherence will be defined as having a TFV-DP ≥ 700 femtomoles/punch in DBS for daily PrEP users, which has been associated with high levels of protection in prior PrEP trials.

    Time frame: DBS measured through 12 months

  2. Satisfaction with medical care

    Satisfaction with medical care will be measured by the Consumer Assessment of Health Care Processes and Services (CAHPS), a critical tool for evaluating patient satisfaction and patient-centeredness of care

    Time frame: Satisfaction measured through 12 months

  3. Patient engagement

    Patient engagement will be measured by the short-version Patient Activation Measure (PAM).

    Time frame: Patient engagement measured through 12 months

Secondary outcomes

  1. PrEP continuation based on medication refills

    PrEP discontinuation will be defined as having a PrEP interruption of ≥30 days based on medication refill dates using blinded outcome ascertainment of electronic medical and pharmacy refill records.

    Time frame: PrEP continuation measured through 12 months

  2. Sexual satisfaction

    Sexual satisfaction will be measured by the New Sexual Satisfaction Scale Short Version (NSSS-S), a validated 12-item questionnaire in which patients score their sexual satisfaction on five dimensions (sexual sensations, sexual presence/awareness, sexual exchange, emotional connection/closeness, and sexual activity)

    Time frame: Sexual satisfaction measured through 12 months

  3. Adherence self-efficacy

    Patient-reported adherence self-efficacy will be measured by the self-efficacy scale for PrEP use, which has been validated for PrEP use

    Time frame: Adherence self-efficacy measured through 12 months

07

Study locations

3 of 4 sites recruiting
  • Bridge HIV, San Francisco Department of Public Health
    San Francisco, California 94102, United States
    Active, not recruiting
  • San Francisco AIDS Foundation
    San Francisco, California 94114, United States
    • Rikki Montoya · Contact · rmontoya@sfaf.org · 415-920-3653
    • Jorge Roman, MSN, FNP-BC · Contact · jroman@sfaf.org · 415-437-3417
    • Jorge Roman, MSN, FNP-BC · Principal investigator
    Recruiting
  • Whitman-Walker Health
    Washington, District of Columbia 20009, United States
    Recruiting
  • University of Miami
    Miami, Florida 33136, United States
    • Susanne Doblecki-Lewis, MD, MSPH, FIDSA · Contact · sdoblecki@med.miami.edu · 305-243-9213
    • Susanne Doblecki-Lewis, MD, MSPH, FIDSA · Principal investigator
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 28, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04855773
Lead sponsor
Public Health Foundation Enterprises, Inc.
Collaborators
Patient-Centered Outcomes Research Institute, University of California, San Francisco, University of Miami, Whitman-Walker Health, San Francisco AIDS Foundation, WelTel, San Francisco Department of Public Health
Responsible party
Albert Liu (Clinical Research Director, Public Health Foundation Enterprises, Inc.) — Principal investigator
First posted
Apr 22, 2021
Start date
Jul 21, 2021
Primary completion
Aug 2023 (estimated)
Completion
Aug 2023 (estimated)
Last update
Sep 28, 2022

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Sep 2022. You cannot join it, but the record below documents what was studied.

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