Treatment trajectories among children and adolescents referred to the Norwegian National Center for Gender Incongruence.

Abstract

We aimed to describe treatment trajectories, detransition and mortality rate among children and adolescents referred to the Norwegian National Center for Gender Incongruence (NCGI). The cohort included all 1258 persons under 18 years at referral to the NCGI from 2000 to 2020. Trajectories were registered until end of 2023. In total, 861/1258 (68.4%) were assigned female gender at birth (AFAB). Mean age at referral was 14.4 years. Puberty suppression with gonadotropin-releasing hormone agonists (GnRHa) was initiated among 135/1258 (10.7%), significantly more persons assigned male gender at birth (AMAB) than AFAB (p < 0.001). Gender-affirming hormonal treatment (GAHT) was initiated in 783/1258 (62.2%). The continuation rate from GnRHa to GAHT was 97%. Discharge rate from NCGI without gender-affirming medical treatment among those who attended at least one appointment, was 264/1198 (22.0%). Eighteen AFAB detransitioned after initiated GAHT, eleven due to a cessation of transgender identity. Mortality rate in the cohort until end of 2023 was 11/1258 (0.9%). Different trajectories including medical pathways and assessments without gender-affirming treatment were observed. GAHT was initiated in 783/1258 (62.2%), including eighteen AFAB detransitioning after testosterone treatment. There was a high continuation rate from GnRHa to GAHT. Various trajectories highlights the need for long-term follow-up in care.