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Clinical Research Directory

Browse clinical research sites, groups, and studies.

9 clinical studies listed.

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Transgender Persons

Tundra lists 9 Transgender Persons clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

This data is also available as a public JSON API. AI systems and LLMs are encouraged to use it for structured queries.

ENROLLING BY INVITATION

NCT06565663

MaPGAS Decision Making

The goal of this clinical trial is to test a new online tool designed to provide clear and understandable information to help individuals considering Metoidioplasty and Phalloplasty Gender Affirming Surgery (MaPGAS)make informed decisions The main questions it aims to answer are: * How user-friendly is the decision aid for individuals considering metoidioplasty and phalloplasty? * Does using the decision aid reduce uncertainty and improve readiness for making surgery decisions compared to usual care? Participants in this study will: * Be randomly assigned to either 1) receive usual care or 2) test the web-based decision aid. * Share their feedback on the tool's usability and its helpfulness in supporting decision-making. * Complete surveys before and after using the decision aid to measure any changes in their decision-making process. Researchers will compare participants who used the decision aid with those who received standard care to see if the decision aid reduces decisional uncertainty and improves readiness for surgery.

Gender: FEMALE

Ages: 18 Years - Any

Updated: 2026-03-23

2 states

Gender Dysphoria
Gender Dysphoria, Adult
Gender Incongruence
+4
RECRUITING

NCT05927350

Research Participation With Transgender and Gender-Diverse Youth

Research has historically excluded the participation of transgender and gender-diverse people. The purpose of this research study is to find out about what goes into a transgender and gender-diverse youth's decision to participate in research. The results of this study will be used to improve access to research for transgender and gender-diverse youth and therefore, improve the representation of transgender and gender-diverse youth as research participants in research.

Gender: All

Ages: 15 Years - 21 Years

Updated: 2026-02-20

1 state

Transgender Persons
RECRUITING

NCT06832514

Investigating Gender and Sex Differences in Immune Responses Through Vaccination of Transgender and Cisgender Persons

Sexual differences are a well-established source of biological variation in immune system functioning, with men often displaying lower adaptive immune responses (e.g. antibody production) to infections and vaccinations compared to women. The impact of sex and gender on immune responses and immune functioning warrants more in-depth investigation. This study is an investigator-initiated project aimed at prospectively assessing the immune response towards a vaccine in transgender and cisgender individuals. Transgender individuals retain their chromosomal sex while undergoing a significant hormonal shift that aligns with their experienced gender. Immune responses induced by the four-component meningococcal serogroup B (4CMenB; Bexsero®) vaccine will be evaluated in transgender individuals and compared with responses observed in cisgender individuals. Both humoral and cellular immune responses induced by two doses of the 4CMenB vaccine will be quantified and analysed. This approach is expected to provide new insights into the effects of gender and sex differences on innate and adaptive immune responses.

Gender: All

Ages: 18 Years - 50 Years

Updated: 2026-01-20

Meningococcal Meningitis, Serogroup B
Transgender Persons
Sex Differences in Immune Response
+1
ACTIVE NOT RECRUITING

NCT05924217

Gynecology Beyond Gender: Cervical Cancer Screening in Transgender Men in France

In France, cervical cancer screening is the subject of a national screening programme organized for all asymptomatic individuals aged 25 to 65 years with a cervix. The latter contributes greatly to the prevention and early treatment of this disease, whose public health challenge is recognized worldwide. One of the objectives of this programme is to reduce inequalities in access. Transgender men, i.e. individuals assigned to the female gender at birth but identifying with the male gender, are concerned by this screening as long as they still have a cervix, according to the same modalities as for cisgender women. However, they are often excluded from health care, including organized screening programs. Gender change in civil status is one of the obstacles. The provision of gynaecological care is sometimes inadequate. The lack of knowledge of health professionals and the problems of discrimination that transgender people may face reduce the chances of having equitable access. This survey aims to explore the perception that transgender men have of cervical cancer screening and to identify the challenges they face, the obstacles and the levers to access this prevention program.

Gender: FEMALE

Ages: 25 Years - 65 Years

Updated: 2025-11-17

Cervical Cancer
Transgender Persons
Health Services for Transgender Persons
RECRUITING

NCT07148921

Perception of Pain During Gender Affirming Hormone Therapy

It is known from the literature that women and men differ in their perception of pain. Why this is the case has not been conclusively clarified. Sex hormones could have a significant influence on this. The study team suspects that the classic hormone status of women is responsible for the lower pain threshold compared to men. People undergoing gender affirming therapy receive biologically opposite-sex hormones in order to adapt their external appearance as well as their voice, emotional life etc. to the desired gender. The aim of this study is to longitudinally record whether the intake of opposite-sex sex hormones leads to a change in pain and perception thresholds in this patient collective. To this end, potential study participants will be informed about the study and asked whether they would like to participate before the start of hormone therapy during their first visit to the transgender outpatient clinic. If consent is given, a questionnaire on mental health (PHQ 9), a blood sample to determine the hormone status and the first QST (quantitative sensory testing) measurement are then carried out. The second measurement with blood sampling takes place 3-4 weeks after the first measurement. The 3rd and 4th measurements with blood sampling are taken 3 and 6 months respectively after the first measurement. The PHQ 9 is measured again at the time of the last measurement. Study participation ends after a total of 6 months. The blood samples, the PHQ 9 and the QST measurements have no influence on the treatment of the study participants.

Gender: All

Ages: 18 Years - Any

Updated: 2025-08-29

1 state

Transgender Persons
Pain Threshold
Perception of Pain
+1
RECRUITING

NCT06177600

TransHealthGUIDE: Transforming Health for Gender-Diverse Young Adults

This is a randomized controlled trial to test the effectiveness of an interactive educational app-based digital intervention that provides knowledge and support to transgender and gender-diverse (TGD) young adults ages 18-29 years and their caregivers. The goal of the study is to examine the effects of exposure to the app on TGD young adult mental health outcomes. Participants will be randomized to an Immediate Arm (access to a digital platform, plus usual care) or a Deferred Arm (usual care; access to the digital platform at 6 mo). Usual care consists of access to published resources and community support organizations, if available. The list of resources will include contact information for a suicide prevention hotline. For each Arm, the intervention period will last 6 months, followed by 6 months of observation, during which access to the intervention is maintained. Assessments will be performed at baseline, 3, 6, and 12 months to document changes in mental health outcomes, and the two groups will be compared. The investigators plan to enroll 500 TGD young adults and their caregivers, with at least 50% (250 participants) to identify as Black, Indigenous, People of Color (BIPOC) and 50% (125 TGD young adults, 125 caregivers) to be young adult-caregiver dyads. Ongoing process reassessments will be performed to maximize effectiveness of the intervention, including focus groups and in-depth interviews with TGD young adults, caregivers, and providers, as well as analysis of data collected through the digital platform and participant surveys. Investigators will account for sociodemographic characteristics such as race and ethnicity, age, gender identity, education status, existing mental health conditions, and history of suicidal ideation or attempt. Data will be analyzed across racial minority groups to ensure that the intervention is effective for all racial minorities; if there are discrepancies in effectiveness, additional mixed methods evaluation will be performed to identify and address potential causes.

Gender: All

Ages: 18 Years - 29 Years

Updated: 2025-08-20

1 state

Transgender Persons
Health Services for Transgender Persons
Gender Identity
ACTIVE NOT RECRUITING

NCT05116293

Effect of Testosterone Treatment on Drug Metabolism and Transport

This project will evaluate the effect of gender-affirming testosterone treatment on how other medications are processed by the body.

Gender: All

Ages: 18 Years - 60 Years

Updated: 2025-06-13

1 state

Transgender Persons
NOT YET RECRUITING

NCT06854965

Cohort Study on Factors Associated with the Evolution of Quality of Life Among Transgender Individuals in the French Population

This research focuses on identifying medical, social, and healthcare journey determinants associated with the evolution of quality of life in the transgender population at 12 months. To address the research question, it is planned to include 1,500 transgender individuals, among those attending healthcare professionals or associations in the French territory who have agreed to take on the role of investigators (professionals in healthcare or designated individuals within an association).

Gender: All

Ages: 18 Years - Any

Updated: 2025-03-03

Transgender Persons
RECRUITING

NCT06487754

New-onset Chronic Pelvic Pain in Transgender People Using Testosterone Therapy: an Exploratory Qualitative Study.

This descriptive qualitative study aim to describe the characteristics of pelvic pain in transgender (trans) individuals using testosterone therapy and the impact on their quality of life. This study also aim to understand the levers and obstacles to consulting a health care professional.

Gender: All

Ages: 18 Years - Any

Updated: 2024-12-17

Transgender Persons
Pelvic Pain
Testosterone
+1