Actively Recruiting

Age: 16Years +
All Genders
NCT06774053

Swiss ProspectivE Cohort of TRAnsgender and Gender Diverse Individuals - The SPECTRA Study

Led by University Hospital, Basel, Switzerland · Updated on 2026-05-05

600

Participants Needed

2

Research Sites

1028 weeks

Total Duration

On this page

Sponsors

U

University Hospital, Basel, Switzerland

Lead Sponsor

U

University of Luzern

Collaborating Sponsor

AI-Summary

What this Trial Is About

The goal of this observational study is to understand the factors influencing the well-being and health of transgender and gender-diverse (TGD) individuals undergoing gender-affirming therapies in Switzerland. The study population includes TGD individuals aged 16 and older, at various stages of their medical transition, including those who have discontinued or detransitioned. The main question is: What are the key factors influencing the well-being and health outcomes of transgender and gender-diverse individuals undergoing gender-affirming therapies? Researchers will compare health outcomes across different subgroups, such as those at different stages of transition or detransition, to examine the effects of gender-affirming therapies. Participants will: Complete electronic questionnaires assessing gender congruence, quality of life, mental health, and other outcomes. Provide biological samples (e.g., blood, urine, stool, and skin swabs) for laboratory analysis. Undergo clinical evaluations related to endocrinology, fertility, dermatology, and urology as part of their routine follow-up.

CONDITIONS

Official Title

Swiss ProspectivE Cohort of TRAnsgender and Gender Diverse Individuals - The SPECTRA Study

Who Can Participate

Age: 16Years +
All Genders

Eligibility Criteria

Eligible

You may qualify if you...

  • Age 16 years and above
  • Established diagnosis of gender incongruence
  • Indication for gender-affirming therapy or currently ongoing or discontinued gender-affirming therapy
Not Eligible

You will not qualify if you...

  • Unable to give informed consent
  • Missing commitment or ability to follow study protocol

AI-Screening

AI-Powered Screening

Complete this quick 3-step screening to check your eligibility

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Trial Site Locations

Total: 2 locations

1

University Hospital of Basel

Basel, Switzerland, 4031

Actively Recruiting

2

Cantonal Hospital of Lucerne

Lucerne, Switzerland, 6000

Not Yet Recruiting

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Research Team

B

Bettina Winzeler, PD Dr.

CONTACT

H

Hüseyin Cihan, Dr.

CONTACT

How is the study designed?

Study Type

OBSERVATIONAL

Masking

N/A

Allocation

N/A

Model

N/A

Primary Purpose

N/A

Number of Arms

3

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