Minimizing Venous Thromboembolism in Feminizing Hormone Therapy: Applying Lessons From Cisgender Women and Previous Data

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Abstract

Objective: To review he impact of estrogen-containing feminizing hormone regimens on transgender individuals’ risk for VTE. Methods: We evaluated VTE risk by screening 1170 relevant studies published from 1994 to 2020, focusing on meta-analysis data. Results: The type of oral estrogen, route of administration, patient demographics, and comorbidities may affect the risk of VTE. Venous thrombosis is the most common vascular complication associated with HT. Conclusion: Conjugated equine estrogens and 17-β estradiol appear to be safer than oral ethinyl estradiol. Transdermal estrogen formulations appear to be the least thrombogenic estrogens. Estrogens used concomitantly with progestins increase the risk of VTE compared to estrogens alone. To date, there are no data to demonstrate the benefit of holding HT prior to vaginoplasty or other gender affirming surgeries. For most young, healthy transgender women, there is little risk of VTE with HT, while older patients with risk factors should be discussed case by case.

Original languageEnglish
Pages (from-to)621-625
Number of pages5
JournalEndocrine Practice
Volume27
Issue number6
DOIs
StatePublished - Jun 2021

Keywords

  • estrogens
  • feminizing therapy
  • transgender
  • venous thromboembolism

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