(Q30091)
Statements
Transgender women who underwent gonadectomy have lower serum testosterone concentrations than cisgender women. (English)
OBJECTIVE (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
There is uncertainty regarding the dosing and side effects of supplementation of testosterone in transgender women. (English)
OBJECTIVE (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
This study aimed to assess the feasibility of dosing testosterone to the cisgender female physiological range in transgender women. (English)
OBJECTIVE (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
In addition, we explored changes in cardiovascular parameters, virilizing side effects, and clinical symptoms. (English)
OBJECTIVE (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
This is an open-label, single-arm feasibility study. (English)
DESIGN (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
Participants initially went through a dose-titration phase with 2-week intervals of 0.07-0.09-0.13 mL (277-318-403 μg bioavailable testosterone) testosterone 2% gel to establish a dose leading to serum testosterone concentrations between 1.5 and 2.5 nmol/L. (English)
DESIGN (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
This dose was then continued for 8 weeks. (English)
DESIGN (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
Participants applied daily transdermal testosterone 2% gel (Tostran®) at the prescribed dosage. (English)
METHODS (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
Testosterone was measured every 2-4 weeks. (English)
METHODS (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
Laboratory analyses, side effects, and clinical symptoms were evaluated. (English)
METHODS (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
In total, 12 participants were included. (English)
RESULTS (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
Most participants required a dose of 0.07 mL (277 μg bioavailable testosterone) or 0.09 mL (318 μg bioavailable testosterone) to reach serum testosterone concentrations of 1.5-2.5 nmol/L. (English)
RESULTS (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
Continuing this dose, testosterone concentrations remained stable throughout the study. (English)
RESULTS (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
Changes in clinical outcomes were in the desired direction, and side effects were mild. (English)
RESULTS (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
The use of testosterone supplementation in transgender women seems feasible and safe in the short term. (English)
CONCLUSIONS (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
Although dosing requires personalized titration, stable testosterone levels can be established. (English)
CONCLUSIONS (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
A blinded, placebo-controlled, randomized clinical trial is needed to study the clinical benefit. (English)
CONCLUSIONS (English)
© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Endocrinology. (English)
2024
Noor C (English)
Gieles (English)
NC
Maurice A G M (English)
Kroon (English)
MAGM
Stephanie (English)
Both (English)
S
Annemieke C (English)
Heijboer (English)
AC
Baudewijntje P C (English)
Kreukels (English)
BPC
Martin (English)
den Heijer (English)
M
23 September 2024
3 September 2024