ESTROGEN AND ANTIANDROGEN HORMONE TREATMENT PROCESS IN TRANSGENDER WOMEN
Bekir Gülaç
Düzce University, Faculty of Medicine, Department of Gynecology and Obstetrics, Düzce, Türkiye
Gülaç B. Estrogen and Antiandrogen Hormone Treatment Process in Transgender Women. Balsak D, Aksin Ş, eds. Health of Transgender Women: Gynecological, Hormonal, Sexual and Psychological Management. 1st ed. Ankara: Türkiye Klinikleri; 2025. p.3-10.
ABSTRACT
For transgender women, achieving a feminine physical appearance and living as a woman in society hold significant importance. Hormonal therapy plays a pivotal role in developing secondary sex characteristics. Therefore, during the transition from male to transgender woman, the administration of estrogens and antiandrogens at appropriate doses and in suitable treatment regimens is essential to achieve the desired hormone balance. Hormone therapy functions by suppressing endogenous male sex hormone levels and replacing them with hormones aligned with a transgender woman’s identity. Treatment options include oral estrogens, transdermal estradiol patches, and injectable forms such as estradiol valerate or estradiol cypionate. However, physiological doses of estrogen alone are often insufficient to reduce androgen levels to ranges typical for cisgender women. To address this, antiandrogens are commonly prescribed to effectively lower testosterone levels. Commonly used antiandrogens include cyproterone acetate, spironolactone, finasteride, and gonadotropin-releasing hormone agonists, each offering distinct advantages and disadvantages depending on their mechanism of action, route of administration, and bioavailability.
These treatments carry potential risks, such as deep vein thrombosis and thromboembolic diseases. Therefore, treatment plans should be individualized, with thorough risk assessments and periodic monitoring of hormone levels. Pre-treatment evaluations, regular medical follow-ups, and routine screenings are essential to ensure safety and efficacy. Individuals using spironolactone require serum electrolyte monitoring, while routine cancer screenings and osteoporosis assessments are also recommended. Osteoporosis screening should begin at age 60 or earlier for individuals unable to maintain effective hormone therapy.
This study aims to evaluate the effects of estrogen and antiandrogen therapies in transgender women and highlight critical considerations for their follow-up care.
Keywords: Transgenderism; Estrogen replacement; Estrogenic agents; Antiandrogens; Precision medicine
Kaynak Göster
Referanslar
- Hembree WC, Cohen-Kettenis PT, Gooren L, Hannema SE, Meyer WJ, Murad MH, et al. Endocrine treatment of gender-dysphoric/gender-incongruent persons: an Endocrine Society clinical practice guideline. J Clin Endocrinol Metab. 2017;102(11):3869-3903. [Crossref] [PubMed]
- Coleman E, Bockting W, Botzer M, Cohen-Kettenis P, DeCuypere G, Feldman J, et al. Standards of Care for the Health of Transsexual, Transgender, and Gender-Nonconforming People, version 7. Int J Transgenderism.2012;13(4):165-232. [Crossref]
- Tangpricha V, Heijer M. Oestrogen and anti-androgen therapy for transgender women. Lancet Diabetes Endocrinol. 2016;5(4):291-300. [Crossref] [PubMed]
- Haupt C, Henke M, Kutschmar A, Hauser B, Baldinger S, Saenz SR et al. Antiandrogen or estradiol treatment or both during hormone therapy in transitioning transgender women. Cochrane Database Syst Rev. 2020;11(11):CD013138. [Crossref] [PubMed] [PMC]
- T'Sjoen G, Arcelus J, De Vries ALC, Fisher AD, Nieder TO, Özer M, et al. European Society for Sexual Medicine Position Statement "Assessment and Hormonal Management in Adolescent and Adult Trans People, With Attention for Sexual Function and Satisfaction". J Sex Med. 2020;17(4):570-584. [Crossref] [PubMed]
- Hembree WC, Cohen-Kettenis P, Delemarre-van de Waal HA, Gooren LJ, Meyer WJ 3rd, Spack NP, et al. Endocrine Society. Endocrine treatment of transsexual persons: an Endocrine Society clinical practice guideline. J Clin Endocrinol Metab. 2009;94(9):3132-54 [Crossref] [PubMed]
- Bell EJ, Lutsey PL, Basu S, Cushman M, Heckbert SR, LloydJones DM, et al. Lifetime Risk of Venous Thromboembolism in Two Cohort Studies. Am J Med. 2016;129(3):339.e19-26. [Crossref] [PubMed] [PMC]
- T'Sjoen G, Arcelus J, Gooren L, Klink DT, Tangpricha V. Endocrinology of Transgender Medicine. Endocr Rev. 2019;40(1):97-117 [Crossref] [PubMed]
- Heylens G, Verroken C, De Cock S, T'Sjoen G, De Cuypere G. Effects of different steps in gender reassignment therapy on psychopathology: a prospective study of persons with a gender identity disorder. J Sex Med. 2014;11(1):119-26. [Crossref] [PubMed]
- D'hoore L, T'Sjoen G. Gender-affirming hormone therapy: An updated literature review with an eye on the future. J Intern Med. 2022;291(5):574-592. [Crossref] [PubMed]
- Wylie K, Knudson G, Khan SI, Bonierbale M, Watanyusakul S, Baral S. Serving transgender people: clinical care considerations and service delivery models in transgender health. Lancet. 2016;388(10042):401-411. [Crossref] [PubMed]
- Gooren LJ, Giltay EJ, Bunck MC. Long-term treatment of transsexuals with cross-sex hormones: extensive personal experience. J Clin Endocrinol Metab. 2008;93(1):19-25 [Crossref] [PubMed]
- Deutsch MB, Bhakri V, Kubicek K. Effects of cross-sex hormone treatment on transgender women and men. Obstet Gynecol. 2015;125(3):605-610. [Crossref] [PubMed] [PMC]
- Gava G, Cerpolini S, Martelli V, Battista G, Seracchioli R, Meriggiola MC. Cyproterone acetate vs leuprolide acetate in combination with transdermal oestradiol in transwomen: a comparison of safety and effectiveness. Clin Endocrinol (Oxf). 2016;85(2):239-46. [Crossref] [PubMed]
- Meriggiola MC, Gava G. Endocrine care of transpeople part I. A review of cross-sex hormonal treatments, outcomes and adverse effects in transmen. Clin Endocrinol (Oxf). 2015;83(5):597-606. [Crossref] [PubMed]
- Toorians AW, Thomassen MC, Zweegman S, Magdeleyns EJ, Tans G, Gooren LJ, et al. Venous thrombosis and changes of hemostatic variables during cross-sex hormone treatment in transsexual people. J Clin Endocrinol Metab. 2003;88(12):5723-9 [Crossref] [PubMed]
- Wierckx K, Gooren L, T'Sjoen G. Clinical review: Breast development in trans women receiving cross-sex hormones. J Sex Med. 2014;11(5):1240-7. [Crossref] [PubMed]
- Stevenson MO, Wixon N, Safer JD. Scalp Hair Regrowth in Hormone-Treated Transgender Woman. Transgend Health. 2016;1(1):202-204. [Crossref] [PubMed] [PMC]
- Irwig MS. Safety concerns regarding 5α reductase inhibitors for the treatment of androgenetic alopecia. Curr Opin Endocrinol Diabetes Obes. 2015;22(3):248-53. [Crossref] [PubMed]
- Van Caenegem E, Wierckx K, Taes Y, Schreiner T, Vandewalle S, Toye K, et al. Body composition, bone turnover, and bone mass in trans men during testosterone treatment: 1-year follow-up data from a prospective case-controlled study (ENIGI). Eur J Endocrinol. 2015;172(2):163-71. [Crossref] [PubMed]
- Ott J, Kaufmann U, Bentz EK, Huber JC, Tempfer CB. Incidence of thrombophilia and venous thrombosis in transsexuals under cross-sex hormone therapy. Fertil Steril. 2010;93(4):1267-72. [Crossref] [PubMed]
- Righini M, Perrier A, De Moerloose P, Bounameaux H. D-Dimer for venous thromboembolism diagnosis: 20 years later. J Thromb Haemost. 2008;6(7):1059-71. [Crossref] [PubMed]
- Weinand JD, Safer JD. Hormone therapy in transgender adults is safe with provider supervision; A review of hormone therapy sequelae for transgender individuals. J Clin Transl Endocrinol. 2015;2(2):55-60. [Crossref] [PubMed] [PMC]
- Reisner SL, Deutsch MB, Bhasin S, Bockting W, Brown GR, Feldman J, et al. Advancing methods for US transgender health research. Curr Opin Endocrinol Diabetes Obes. 2016;23(2):198-207. [Crossref] [PubMed] [PMC]