Optimizing Individual Health Care for Young People With Gender Incongruence
Gender Incongruence in Danish Youth (GenDa): An Observational Cohort Study of Danish Children and Adolescents Referred to a National Gender Identity Service
1 other identifier
observational
1,300
1 country
1
Brief Summary
This observational study focuses on evaluating the effect of the current health care program for Danish children and adolescents with gender incongruence, which was established in January 2016. Somatic outcome parameters include growth, bone health, body composition, metabolic parameters, hormone levels and concurrent diseases. Psychosocial parameters include the trajectory of gender incongruence development, mental health, i.e. autism spectrum disorders, behavioural problems, self-harm, suicidal ideation and psychiatric diagnoses, and social context, i.e. family demographics, education, minority stress. This study aims to:
- 1.Characterise the psychosocial profile of all children and adolescents referred for treatment, as well as the history of gender identity development and treatment trajectories.
- 2.Systematically evaluate biological parameters before and during hormonal treatment with gonadotropin-releasing hormone (GnRH) analogues and cross-sex hormones, and to establish a biobank for those in hormone treatment.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Jan 2022
Longer than P75 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
January 1, 2022
CompletedFirst Submitted
Initial submission to the registry
April 18, 2024
CompletedFirst Posted
Study publicly available on registry
August 27, 2024
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 1, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
December 1, 2030
ExpectedAugust 27, 2024
August 1, 2024
3.9 years
April 18, 2024
August 25, 2024
Conditions
Outcome Measures
Primary Outcomes (24)
Body Mass Index (BMI)
BMI will be calculated from height and weight (kg/m\^2) measurements
8 years
Puberty
Tanner stages of puberty (1-5) are obtained by clinical examination
8 years
Bone mineral content (BMD)
Whole body dual-energy x-ray absorptiometry (DXA) will determine BMD Z-score for age and sex
8 years
Body fat
Whole body dual-energy x-ray absorptiometry (DXA) will measure body fat percentage (%)
8 years
Lean body mass
Whole body dual-energy x-ray absorptiometry (DXA) will measure lean mass (kg)
8 years
Reproductive serum hormone levels
Changes in reproductive hormone levels (%)
8 years
Adrenal serum hormone levels
Changes in adrenal hormone levels (%)
8 years
Blood pressure
Changes in blood pressure measurement (mm Hg)
8 years
Transabdominal ultrasound of uterus
Changes of endometrium (thickness in mm) during testosterone treatment
8 years
Transabdominal ultrasound of ovaries
Change in number of follicles (n) during testosterone treatment
8 years
Sperm count
Sperm Count (at cryopreservation)
8 years
Sperm motility
Sperm motility (at cryopreservation)
8 years
Morbidity
Number of participants with registered ICD10 diagnoses
8 years
Demographic characteristics
eg. socioeconomic status
8 years
Prevalence of psychiatric disorders
Based on screening for psychopathology using validated tests, as indicated: Schedule for Affective Disorders and Schizophrenia for School-age children (K-SADS): A diagnostic tool used to assess psychiatric disorders in children and adolescents. It is a semi-structured interview guide used to identify psychiatric conditions. Wechsler Intelligence Scale for Children (WISC 4/5) or Wechsler Adult Intelligence Scale (WAIS 4): General cognitive function is measured on a scale from 40-160 which is used as an intelligence quotient. A higher score: A higher cognitive function. Rorschach: A projective psychological test. The test uses a series of ink blots to evaluate a person's mental functions and emotional state by analysing their perceptions of the figures. The test is based on complex and subjective scoring and interpretation.
8 years
Prevalence of Attention Deficit Hyperactive Disorder (ADHD)
Screening using validated tests: Behavior Rating Inventory of Executive Function (BRIEF): General executive function is measured on a normative scale with T-scores from 20-80. A higher score: more executive difficulties. Attention Deficit/Hyperactive Disorder-Rating Scale (ADHD-RS): Attention Deficit Hyperactive Disorder traits measured on a normative scale with T-scores from 0-78. A higher score: More Attention Deficit Hyperactive Disorder traits
8 years
Prevalence of autism spectrum disorder
Screening using validated tests: Social Responsiveness Scale (SRS): Autism spectrum disorder (ASD) traits measured on a scale with T-scores from 0-76+. A higher score: More autistic traits. Autism Diagnostic Observation Schedule (ADOS): A structured observational tool to assess ASD. A trait is rated on a scale from 0 to 3. 0 indicates absence of a behaviour and 3 indicates severe occurrence of a behaviour. The total score determines the presence and severity of ASD. The cut-off scores are 10 for autism and 7 for ASD traits. Autism Diagnostic Interview-Revised (ADI-R): A structured interview used to assess ASD traits. Interview questions are scored on a scale from 0-3. 0 indicates absence of a behaviour and 3 indicates severe occurrence of a behaviour. The scores compared with cut-off values determine the presence of ASD. Cut-off values for each trait: Social interaction: cut-off 10; Communication skills: cut-off 8; Restrictive and repetitive behaviour patterns: cut-off 3.
8 years
Global level of functioning
Children's Global Assessment Scale (C-GAS, range 1-100)
8 years
Psychosocial Disability
Global Assessment of Psychosocial Disability (GAPD, range 0-8)
8 years
Suicide risk
Number of participants with self-reported suicide thoughts or attempts (interview)
8 years
Substance abuse.
Number participants with self-reported abuse of alcohol, drugs or medications (interview)
8 years
Personal history of gender incongruence (GI)
Age at onset of GI and social transitioning (interview)
8 years
Cultural measures
Interviews with youngsters and their families to explore: 1\) The experiences that are influential in the process of seeking gender-affirming treatment. 2) Treatment expectations and wishes. 3) The cultural understandings of gender, sex, body and identity that inform the decision to seek treatment. 4) The role of the family in the decision to seek treatment.
8 years
Establishment of biobank
Serum, plasma, DNA at -20 and -80 degrees Celsius.
8 years.
Interventions
Referral to the national gender identity service consisting of the Sexological Clinic, Child and Adolescent Mental Health Center, and Department of Growth and Reproduction in the Capital Region of Denmark.
Eligibility Criteria
All children and youngsters under the age of 18 years referred to the gender identity service in Denmark.
You may qualify if:
- Accepted referral to the gender identity service.
You may not qualify if:
- None.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Department of Growth and Reproduction, Rigshospitalet
Copenhagen, Capital Region, 2100, Denmark
Biospecimen
Serum, plasma, DNA.
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Katharina M Main
Rigshospitalet, Denmark
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- OTHER
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Prof. MD, Ph.d.
Study Record Dates
First Submitted
April 18, 2024
First Posted
August 27, 2024
Study Start
January 1, 2022
Primary Completion
December 1, 2025
Study Completion (Estimated)
December 1, 2030
Last Updated
August 27, 2024
Record last verified: 2024-08
Data Sharing
- IPD Sharing
- Will not share