Hormone Therapy and Venous Thromboembolism in a Transgender Adolescent

Assessing and Addressing the Risk of Venous Thromboembolism Across the Spectrum of Gender Affirming Care: A Review

OBJECTIVE

Accumulating evidence demonstrates that gender affirming hormone therapy (GAHT) improves mental health outcomes in transgender persons. Data specific to the risks associated with GAHT for transgender persons continue to emerge, allowing for improvements in understanding, predicting, and mitigating adverse outcomes while informing discussion about desired effects. Of particular concern is the risk of venous thromboembolism (VTE) in the context of both longitudinal GAHT and the perioperative setting. Combining what is known about the risk of VTE in cisgender individuals on hormone therapy (HT) with the evidence for transgender persons receiving HT allows for an informed approach to assess underlying risk and improve care in the transgender community.

OBSERVATIONS

Hormone formulation, dosing, route, and duration of therapy can impact thromboembolic risk, with transdermal estrogen formulations having the lowest risk. There are no existing risk scores for VTE that consider HT as a possible risk factor. Risk assessment for recurrent VTE and bleeding tendencies using current scores may be helpful when assessing individual risk. Gender affirming surgeries present unique perioperative concerns, and certain procedures include a high likelihood that patients will be on exogenous estrogens at the time of surgery, potentially increasing thromboembolic risk.

CONCLUSIONS AND RELEVANCE

Withholding GAHT due to potential adverse events may cause negative impacts for individual patients. Providers should be knowledgeable about the management of HT in transgender individuals of all ages, as well as in the perioperative setting, to avoid periods in which transgender individuals are off GAHT. Treatment decisions for both anticoagulation and HT should be individualized and tailored to patients' overall goals and desired outcomes, given that the physical and mental health benefits of gender affirming care may outweigh the risk of VTE.

Affirming Hormone Treatment for a Transgender Adolescent After a Venous Thromboembolic Event

BACKGROUND

Medical affirmation, including gender-affirming hormones, is an essential component in the treatment of many transgender and gender-diverse youth. The risk of venous thromboembolism (VTE) during testosterone therapy for gender-affirming care is not fully elucidated.

OBSERVATION

The case describes a 17-year-old transgender male treated with testosterone therapy who presented with an occlusive deep vein thrombosis of right axillary and subclavian veins. Testosterone level was 920 ng/dL at the time of the deep vein thrombosis, and he had no risk factors for VTE. A complete hypercoagulable workup was negative.

CONCLUSIONS

The possibility of testosterone therapy as a risk factor for VTE may suggest the need to include this information during informed consent discussions. Long-term anticoagulation may be considered for those restarting testosterone therapy.

Approach to the Patient: Pharmacological Management of Trans and Gender-Diverse Adolescents

Internationally, increasing numbers of children and adolescents with gender dysphoria are presenting for care. In response, gender-affirming therapeutic interventions that seek to align bodily characteristics with an individual's gender identity are more commonly being used. Depending on a young person's circumstances and goals, hormonal interventions may aim to achieve full pubertal suppression, modulation of endogenous pubertal sex hormone effects, and/or development of secondary sex characteristics congruent with their affirmed gender. This is a relatively novel therapeutic area and, although short-term outcomes are encouraging, longer term data from prospective longitudinal adolescent cohorts are still lacking, which may create clinical and ethical decision-making challenges. Here, we review current treatment options, reported outcomes, and clinical challenges in the pharmacological management of trans and gender-diverse adolescents.

Cardiovascular Disease in a Population-Based Sample of Transgender and Cisgender Adults

INTRODUCTION

Existing data on cardiovascular disease among transgender people are inconsistent and are derived from nonrepresentative samples or population-based data sets that do not include transgender-specific risk factors such as gender-affirming hormone use and gender minority stressors. A nationally representative sample of cisgender and transgender adults aged ≥40 years was used to assess the prevalence and correlates of smoking, select cardiovascular disease conditions, and venous thromboembolism.

METHODS

Participants were recruited from 2016 to 2018, with analysis conducted in December 2020 with 114 transgender and 964 cisgender individuals. Sample weights and multiple imputations were used for all estimates except for descriptive statistics. Logistic regression models estimated the ORs and 95% CIs expressing the relationship between each outcome variable and a set of independent variables. Each model controlled for race and age.

RESULTS

No meaningful differences between cisgender and transgender participants were found in smoking or cardiovascular disease conditions. However, there was an increased odds of venous thromboembolism among transgender women compared with those among cisgender women. Transgender people had greater odds of discrimination, psychological distress, and adverse childhood experiences. These stressors were associated with increased odds of a cardiovascular condition, and everyday discrimination and adverse childhood experiences were associated with increased odds of smoking. Discrimination and psychological distress were associated with venous thromboembolism.

CONCLUSIONS

Transgender people face disparities in cardiovascular disease risk. This study provides support for the gender minority stress model as a framework for understanding cardiovascular disease disparities. Future research with larger samples and adjudicated outcomes is needed to advance the field.

Thrombosis Risk in Transgender Adolescents Receiving Gender-Affirming Hormone Therapy

BACKGROUND AND OBJECTIVES

Many transgender youth experience gender dysphoria, a risk factor for suicide. Gender-affirming hormone therapy (GAHT) ameliorates this risk but may increase the risk for thrombosis, as seen from studies in adults. The aim with this study was to examine thrombosis and thrombosis risk factors among an exclusively adolescent and young adult transgender population.

METHODS

This retrospective chart review was conducted at a pediatric hospital-associated transgender health clinic. The primary outcome was incidence of arterial or venous thrombosis during GAHT. Secondary measures included the prevalence of thrombosis risk factors.

RESULTS

Among 611 participants, 28.8% were transgender women and 68.1% were transgender men. Median age was 17 years at GAHT initiation. Median follow-up time was 554 and 577 days for estrogen and testosterone users, respectively. Individuals starting GAHT had estradiol and testosterone levels titrated to physiologic normal. Multiple thrombotic risk factors were noted among the cohort, including obesity, tobacco use, and personal and family history of thrombosis. Seventeen youth with risk factors for thrombosis were referred for hematologic evaluation. Five individuals were treated with anticoagulation during GAHT: 2 with a previous thrombosis and 3 for thromboprophylaxis. No participant developed thrombosis while on GAHT.

CONCLUSIONS

In this study, we examined thrombosis and thrombosis risk factors in an exclusively adolescent and young adult population of transgender people receiving GAHT. These data suggest that GAHT in youth, titrated within physiologic range, does not carry a significant risk of thrombosis in the short-term, even with the presence of preexisting thrombosis risk factors.

Venous Thromboembolism in a Transgender Adolescent on Testosterone Therapy: A Case Report and Literature Review

The incidence of pediatric venous thromboembolism (VTE) has been increasing in the past few decades and can be associated with significant mortality and morbidity. There are known risk factors associated with VTE, including estrogen therapy. However, the relationship between testosterone and VTE remains unclear. Here, we present a 17-year-old female-to-male transgender patient without a history of inherited thrombophilia, who developed pulmonary embolism while receiving testosterone injections for gender dysphoria. Despite the limited data on testosterone and the risk of VTE, health care providers should counsel patients and family about the possible increased risk of VTE when starting testosterone.

Coronary Embolism and Myocardial Infarction in a Transgender Male Undergoing Hormone Therapy: A Case Report and Review of the Literature

Introduction. Due to the complex interaction between the underlying disease, psychosocial factors, and the high-dose hormonal therapy, transgender patients pose a therapeutic and diagnostic challenge, especially during emergencies. This case presents one such clinical dilemma using the example of a case of myocardial infarction.

Gender-affirming hormones and surgery in transgender children and adolescents

The Endocrine Society Clinical Practice Guidelines on the treatment of gender incongruent people recommend the use of gender-affirming cross-sex hormone (CSH) interventions in transgender children and adolescents who request this treatment, who have undergone psychiatric assessment, and have maintained a persistent transgender identity. The intervention can help to affirm gender identity by inducing masculine or feminine physical characteristics that are congruent with an individual's gender expression, while aiming to improve mental health and quality-of-life outcomes. Some transgender individuals might also wish to access gender-affirming surgeries during adolescence; however, research to inform best clinical practice for surgeons and other medical professionals is scarce. This Review explores the available published evidence on gender-affirming CSH and surgical interventions in transgender children and adolescents, amalgamating findings on mental health outcomes, cognitive and physical effects, side-effects, and safety variables. The small amount of available data suggest that when clearly indicated in accordance with international guidelines, gender-affirming CSHs and chest wall masculinisation in transgender males are associated with improvements in mental health and quality of life. Evidence regarding surgical vaginoplasty in transgender females younger than age 18 years remains extremely scarce and conclusions cannot yet be drawn regarding its risks and benefits in this age group. Further research on an international scale is urgently warranted to clarify long-term outcomes on psychological functioning and safety.