TY - JOUR
T1 - Just as tall on testosterone; a neutral to positive effect on adult height of GnRHa and testosterone in trans boys
AU - Willemsen, Lieve Anne
AU - Boogers, Lidewij Sophia
AU - Wiepjes, Chantal Maria
AU - Klink, Daniel Tatting
AU - van Trotsenburg, Adrianus Sarinus Paulus
AU - den Heijer, Martin
AU - Hannema, Sabine Elisabeth
N1 - © The Author(s) 2022. Published by Oxford University Press on behalf of the Endocrine Society.
PY - 2022/10/3
Y1 - 2022/10/3
N2 - CONTEXT: Growth is an important topic for many transgender boys. However, few studies have investigated the impact of puberty suppression (PS) and gender affirming hormone treatment (GAHT) on growth and adult height.OBJECTIVE: To evaluate the effect of PS and GAHT on growth and adult height.DESIGN: Retrospective cohort study.SETTING: Specialised gender identity clinic.PARTICIPANTS: 146 transgender boys treated with GnRH analogues and testosterone who reached adult height.MAIN OUTCOME MEASURES: Growth, bone age (BA), adult height, and difference between adult height and predicted adult height (PAH) and midparental height.RESULTS: In those with BA ≤14 year at start (n = 61), a decrease in growth velocity and bone maturation during PS was followed by an increase during GAHT. Adult height was 172.0 ± 6.9 cm; height SDS was similar to baseline (0.1, 95% CI -0.2 to 0.4). Adult height was 3.9 ± 6.0 cm above midparental height and 3.0 ± 3.6 cm above PAH at start of PS. A younger BA at start PS was associated with an adult height significantly further above PAH.CONCLUSION: During PS, growth decelerated followed by an acceleration during GAHT. Although adult height SDS was similar to baseline, adult height was taller than predicted based on BA at baseline, especially in those who started treatment at a younger BA. It is reassuring that PS and GAHT do not have a negative impact on adult height in transgender boys and might even lead to a slightly taller adult height, especially in those who start at a younger age.
AB - CONTEXT: Growth is an important topic for many transgender boys. However, few studies have investigated the impact of puberty suppression (PS) and gender affirming hormone treatment (GAHT) on growth and adult height.OBJECTIVE: To evaluate the effect of PS and GAHT on growth and adult height.DESIGN: Retrospective cohort study.SETTING: Specialised gender identity clinic.PARTICIPANTS: 146 transgender boys treated with GnRH analogues and testosterone who reached adult height.MAIN OUTCOME MEASURES: Growth, bone age (BA), adult height, and difference between adult height and predicted adult height (PAH) and midparental height.RESULTS: In those with BA ≤14 year at start (n = 61), a decrease in growth velocity and bone maturation during PS was followed by an increase during GAHT. Adult height was 172.0 ± 6.9 cm; height SDS was similar to baseline (0.1, 95% CI -0.2 to 0.4). Adult height was 3.9 ± 6.0 cm above midparental height and 3.0 ± 3.6 cm above PAH at start of PS. A younger BA at start PS was associated with an adult height significantly further above PAH.CONCLUSION: During PS, growth decelerated followed by an acceleration during GAHT. Although adult height SDS was similar to baseline, adult height was taller than predicted based on BA at baseline, especially in those who started treatment at a younger BA. It is reassuring that PS and GAHT do not have a negative impact on adult height in transgender boys and might even lead to a slightly taller adult height, especially in those who start at a younger age.
U2 - https://doi.org/10.1210/clinem/dgac571
DO - https://doi.org/10.1210/clinem/dgac571
M3 - Article
C2 - 36190924
JO - Journal of Clinical Endocrinology and Metabolism
JF - Journal of Clinical Endocrinology and Metabolism
SN - 0021-972X
ER -