Ending Tobacco Use Through Interactive Tailored Messaging for Cambodian People Living With HIV/AIDS (ProjectENDIT)

August 11, 2026 updated by: H. Lee Moffitt Cancer Center and Research Institute

Ending Tobacco Use Through Interactive Tailored Messaging for Cambodian People Living With HIV/AIDS (Project END-IT)

The goal of this research study is to test how well an automated text messaging smoking treatment program helps smokers with HIV quit smoking.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
800

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Cambodia
      • Phnom Penh, Cambodia
        • Recruiting
        • National AIDS Authority
        • Contact:
          • Leng Hor, MD, PhD
        • Principal Investigator:
          • Leng Hor, MD, PhD
      • Phnom Penh, Cambodia
        • Recruiting
        • National Center for HIV/AIDS, Dermatology and STD
        • Contact:
          • Ouk Vichea, MD
        • Principal Investigator:
          • Ouk Vichea, MD
      • Phnom Penh, Cambodia
        • Recruiting
        • National Institute of Public Health
        • Contact:
          • Chhorvann Chhea
        • Principal Investigator:
          • Chhorvann Chhea

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • 1) being aged ≥18 years
  • 2) being HIV-positive
  • 3) self-reporting as a current combustible cigarette smoker (smoked ≥100 cigarettes in lifetime and currently smoke ≥1 cigarettes/day)
  • 4) willing to set a date for a quit attempt within 2 weeks of study enrollment
  • 5) being able to provide written informed consent to participate
  • 6) being able to read Khmer (score ≥4 points on the Rapid Estimate of Adult Literacy in Medicine-Short Form

Exclusion Criteria:

  • 1) history of a medical condition that precludes use of nicotine replacement therapy
  • 2) physician/clinician deemed ineligible to participate based on medical or psychiatric condition
  • 3) enrolled in another cessation program or use of other cessation medications.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Standard Care Group
Participants will receive brief advice and education materials to quit smoking along with brief weekly assessments to be completed on a smartphone. They will also receive a 8 week supply of of nicotine replacement therapy in the form of nicotine patches.
Drug: Nicotine patch
Participants will be provided with a 8 week supply of nicotine patches
Behavioral: Brief Advice to Quit and Smoking Cessation Self Help Materials
Participants will receive self-help materials from Khmer Quit Now, a national smoking cessation campaign in Cambodia
Behavioral: Diet Assessment
Participants will be asked to complete brief weekly smartphone assessments about their diet for a 26-week period
Experimental: Automated Messaging Treatment Group
Participants will receive brief advice and education materials to quit smoking, along with brief weekly assessments and an interactive phone-based treatment program delivered on a smartphone. They will also receive a 8 week supply of of nicotine replacement therapy in the form of nicotine patches.
Drug: Nicotine patch
Participants will be provided with a 8 week supply of nicotine patches
Behavioral: Brief Advice to Quit and Smoking Cessation Self Help Materials
Participants will receive self-help materials from Khmer Quit Now, a national smoking cessation campaign in Cambodia
Behavioral: Smartphone-delivered Automated Messaging
An interactive smartphone based intervention will provide weekly smoking-related assessments and personalized automated messages designed to increase motivation, self-efficacy, use of coping skills, social support and to reduce nicotine withdrawal symptoms and stress for a 26 week period.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Self Reported 7 Day Abstinence Smoking Status
Time Frame: 12 Month Follow-Up
Participants will self report 7-day abstinence smoking status
12 Month Follow-Up
Smoking Status by Expired Carbon Monoxide
Time Frame: 12 Month Follow-up
Investigators will use a CO monitor to verify smoking status biochemically
12 Month Follow-up

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Self Reported 7 Day Abstinence Smoking Status at 3 Months
Time Frame: At 3 Months
Participants will self report 7-day abstinence smoking status
At 3 Months
Smoking Status by Expired Carbon Monoxide at 3 Months
Time Frame: At 3 Months
Investigators will use a CO monitor to verify smoking status biochemically
At 3 Months
Self Reported 7 Day Abstinence Smoking Status at 6 Months
Time Frame: At 6 Months
Participants will self report 7-day abstinence smoking status
At 6 Months
Smoking Status by Expired Carbon Monoxide at 6 Months
Time Frame: At 6 Months
Investigators will use a CO monitor to verify smoking status biochemically
At 6 Months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
H. Lee Moffitt Cancer Center and Research Institute

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
M.D. Anderson Cancer Center
National Cancer Institute (NCI)
University of Oklahoma

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Damon Vidrine, Dr.PH, Moffitt Cancer Center
  • Principal Investigator: Thanh Bui, Dr.PH, Phnom Penh

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 11, 2023

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 31, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 30, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 16, 2023

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 16, 2023

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 27, 2023

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 13, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 11, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • MCC-21528
  • U01CA261598 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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