The South-East Asian Transgender Health Cohort (SEATrans)

March 25, 2026 updated by: Institute of HIV Research and Innovation Foundation, Thailand
This is a prospective observational cohort study that will enroll 300 HIV-negative transgender people and 150 transgender people living with HIV from 4 community health centers in Thailand, Vietnam, and the Philippines. Each participant will be followed-up until the completion of 24 months.

Study Overview

Status

Status

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

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.

Detailed Description

This prospective observational cohort study will longitudinally track physical (e.g. HIV/STI, sexual risk behavior, gender affirmation, clinical information, cardiovascular health, medical history) and mental health (e.g. stigma and discrimination, gender-based violence, anxiety, depression); identify biomedical, structural, and psychosocial factors impacting physical and mental health among transgender people; describe the structural barriers to healthcare experienced by transgender people as well as develop the guidance on holistic healthcare policies for transgender people.

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.
Observational

Enrollment (Actual)

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.
450

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.
  • Name: Rena Janamnuaysook, MBA
  • Phone Number: 6698 516 4562
  • Email: rena.j@ihri.org

Study Contact Backup

Study Locations

  • Philippines
    • Manila
      • Pasay, Manila, Philippines
        • Victoria by LoveYourself
  • Thailand
    • Bangkapi
      • Bangkok, Bangkapi, Thailand, 10240
        • Rainbow Sky Association of Thailand (RSAT)
    • Bangkok
      • Pathum Wan, Bangkok, Thailand, 10330
        • Institute of HIV Research and Innovation
      • Pathum Wan, Bangkok, Thailand, 10330
        • Tangerine Clinic, Institute of HIV Research and Innovation
  • Vietnam
    • Thuong Kiet Street
      • Ho Chi Minh City, Thuong Kiet Street, Vietnam
        • Glink Clinics, Ho Chi Minh City (HCMC), Vietnam Glink Clinic HCMC1

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

Yes

Sampling Method

Probability Sample

Study Population

  • transgender woman or
  • transgender man

Description

Inclusion Criteria:

  • Thai/Vietnamese/Filipino nationality
  • Aged ≥ 18 years old
  • Self-identify as a transgender woman or transgender man
  • Have signed consent form

Exclusion Criteria:

  • None

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

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
- 150 HIV-positive participants, both who were diagnosed with HIV infection and new cases.
Newly diagnosed HIV-infected participants will be linked to care to start ART. Known HIV-positive participants will be linked to care if they are not in care already. All HIV-positive participants will undergo viral load and CD4 testing at screening/baseline, and be invited back every 6 months for assessment of adherence, viral load testing, STI testing, FBS and lipid profile. A CD4 count will be repeated at Month 12 and Month 24.
- 150 HIV-negative participants who are already receiving PrEP or who will accept PrEP.
HIV-negative participants will be offered PrEP. Those who accept PrEP will enroll in the PrEP program in each country, undergo creatinine testing at screening/baseline and be invited back at Month 1, Month 3, and every three months thereafter for HIV testing and assessment of adherence. STI testing, FBS, creatinine and lipid profile will be repeated every 6 months.
- 150 HIV-negative participants who will refuse PrEP.
HIV-negative participants who do not wish to start PrEP will be invited back at every three months for HIV-testing. STI-testing, FBS and lipid profile will be repeated every 6 months.

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
New cases of HIV infection in transgender people
Time Frame: 24 months
Longitudinally evaluate medical conditions in physiology by using self-administered questionnaires (e.g. sexual behavioral risk assessment) and laboratory results of anti-HIV over 24 months of follow-up.
24 months
Mental health status in transgender people
Time Frame: 24 months
Longitudinally evaluate the mental health as well as gender violence, stigma, discrimination, substance use, etc. by using self-administered questionnaires (e.g. mental health assessment, psychosocial assessment) including gender affirmation in primary care (e.g., hormones and/or surgical interventions history).
24 months
Structural factors and psychosocial factors that impact the physiology and mental health of transgender people
Time Frame: 24 months
This is related to no.2 and will be collected by using the same questionnaires of self-administered. After collecting and grouping the data, we will know the structure and psychosocial problems that impact the health care system's access of transgender people.
24 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.
Institute of HIV Research and Innovation Foundation, Thailand

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.
amfAR, The Foundation for AIDS Research

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: Nittaya Phanuphak, MD,PhD., Institute of HIV Research and Innovation

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.
December 2, 2022

Primary Completion (Actual)

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.
May 15, 2024

Study Completion (Actual)

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.
March 30, 2025

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).
July 1, 2022

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.
July 7, 2022

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.
July 12, 2022

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.
March 30, 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.
March 25, 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.
March 1, 2026

More Information

Terms related to this study

Keywords

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.
  • IHRI017

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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