Testosterone Therapy, Thrombophilia, Venous Thromboembolism, and Thrombotic Events

Hemostatic considerations for gender affirming care

Gender dysphoria or gender incongruence is defined as "persons that are not satisfied with their designated gender" [1]. The awareness and evidence-based treatment options available to this population have grown immensely over the last two decades. Protocols now include an Endocrine Society Clinical Practice Guideline [1] as well as the World Professional Association of Transgender Health Standards of Care (WPATH SOC) [2]. Hematologic manifestations, most notably thrombosis, are one of the most recognized adverse reactions to the hormones used for gender-affirming care. Therefore, hematologists are frequently consulted prior to initiation of hormonal therapy to help guide safe treatment. This review will focus on the scientific evidence related to hemostatic considerations for various gender-affirming therapies and serve as a resource to assist in medical decision-making among providers and patients.

Renal Infarction From Over-the-Counter Testosterone Booster Pills: A Case Report

Renal infarction is a challenging diagnosis that usually requires a high level of clinical suspicion because its clinical presentation is often attributed to more frequent causes. Here, we present the case of a young male with right flank pain. A computed tomography (CT) of the abdomen ruled out nephrolithiasis; hence, a CT urogram was performed, which revealed an acute right kidney infarction. The patient had no personal or family history of clotting disorders. Subsequent tests for atrial fibrillation, an intracardiac shunt, and genetic causes were negative, and a presumptive diagnosis of a hypercoagulable state from over-the-counter testosterone supplements was made.

Hormone replacement therapy in women with history of thrombosis or a thrombophilia

Findings from the Women's Health Initiative (WHI) randomised placebo-controlled trial (RCT) were published at the beginning of this century. They suggested that hormone replacement therapy (HRT) use increased the risk of cardiovascular disease and venous thromboembolism including pulmonary embolism and deep vein thrombosis The findings led to a decline in HRT prescriptions and negative publicity about the use of HRT for women with significant menopausal symptoms. Subsequent studies have shown that the risk of thrombosis with HRT relates to whether estrogen is combined with a progestogen and the route of administration of estrogen. In healthy women with no background medical problems, transdermal hormone replacement is not associated with an increased risk of thrombosis. However, much less is known about the safety of various HRT preparations in women with a high background risk of thrombosis. These cases can often be challenging for clinicians with uncertainties around testing for thrombophilia, use of anticoagulation and striking a balance between the risks and benefits of prescribing HRT. This article will review the mechanism of thrombosis with differing types of HRT and present the evidence from the relevant trials. The article will also present the evidence that specifically relates to women with a personal history of thrombosis or thrombophilia (heritable and acquired) to enable clinicians to better individualise the risk assessment for each woman requesting HRT and understand the role of thrombophilia screening or concomitant anticoagulation in such situations.

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.

Factor V Leiden: Development of VTE in Surgery and Trauma Patients: A Systematic Review

BACKGROUND

Factor V Leiden (FVL) is a hereditary thrombophilia, which causes the blood to be more hypercoagulable; in essence, the blood tends to clot more easily, especially under certain circumstances. It is the most common genetic mutation, causing thrombophilia in patients of white background. Patients that have FVL are at a higher risk to develop venous thromboembolism (VTE) after surgery and trauma.

OBJECTIVE

The purpose of this review is to identify FVL as a risk factor, which may impede optimum acute cardiopulmonary management which may contribute to a longer length of stay (LOS) in the hospital.

METHODS

This article is a systematic review of the literature involving research printed in peer-reviewed journals from 2015 to 2018. The University of Tennessee Health Science Center online library, PubMed, and Google Scholar were used for the literature search.

RESULTS

The results of this study determined that although FVL is in fact a risk factor, which may impede optimum acute cardiopulmonary management which may contribute to a longer LOS, management of VTE is no different for a person with FVL compared with those without FVL.

CONCLUSION

Factor V Leiden is a risk factor for the development of VTE, specifically deep vein thrombosis, in surgical, trauma, pregnant, and hormone replacement therapy patients, thus increasing LOS and recurrence of such events. Regardless of FVL status, management of VTE should be initiated promptly and discontinued when appropriate.

Thrombophilia and hormonal therapy in transgender persons: A literature review and case series

Background: Venous thromboembolism (VTE) is a rare side effect of hormonal therapy in transgender persons. Prothrombotic genetic variants can increase this risk. For this reason, previous VTE and/or genetic thrombophilia may be considered by some as contraindications to hormonal treatment. Aim: To formulate directions for clinical practice about the indications for thrombophilia screening and when to consider combination therapy of therapeutic anticoagulation and hormonal treatment as a safe alternative to withholding hormonal treatment. Methods: We conducted a literature search and describe a case series. All adult patients with gender dysphoria and a known prothrombotic genetic variant or history of VTE were invited by letter to participate in this study. Results: In our center, thrombophilia screening before start of hormonal treatment was restricted to those with a personal or family history of VTE. Sixteen individuals with a history of VTE and/or an underlying prothrombogenic condition were described. The time of follow up varied from 4 months to 20 years. Seven trans women had a positive thrombophilia screening (2 Factor V Leiden (FVL), 1 FVL + anticardiolipin antibodies, 1 FVL + high Factor VIII coagulant activity, 1 protein C deficiency, 1 prothrombin mutation, 1 positive lupus anticoagulant). Three trans women experienced an unprovoked VTE after start of hormonal therapy of which one lead to a positive thrombophilia screening. One VTE event in a trans woman was assumed to be provoked by surgery. Five trans men were identified with a prothrombogenic mutation (3 FVL, 1 protein C deficiency, 1 prothrombin mutation). One trans man, with a negative thrombophilia screen, experienced multiple provoked VTE events before start of hormonal therapy. Conclusion: Based on our literature review and case series we offer guidance when confronted with patients with previous VTE and/or genetic thrombophilia requesting hormonal interventions.

Portomesenteric venous thrombosis in a postmenopausal female with testosterone implant: a case report

Background

Acute portal vein thrombosis is a rare medical event usually seen in liver disease, but it can also occur due to any inherited or acquired procoagulable state that triggers venous occlusion. Hormonal therapies have been associated with an increased risk of prothrombotic states. This case report documents a portomesenteric venous thrombosis in a postmenopausal woman with testosterone implant for the treatment of hypoactive sexual desire and discusses the importance of identifying hypercoagulable risk factors before initiating hormone replacement therapy. We want to improve the awareness of an unusual medical complication associated with hormone replacement therapy and shed light on how testosterone implants could facilitate a thrombotic event related to other risk factors such as obesity and chronic hypoxic states, as well as the importance of differential diagnosis in the evaluation of postmenopausal women on testosterone replacement therapy presenting with acute abdominal pain.

Case presentation

A 55-year-old obese postmenopausal Hispanic female with medical history of chronic obstructive pulmonary disease presents with intractable abdominal pain, is found to have elevated hemoglobin and hematocrit, and an abdominopelvic computed tomography scan revealing portal and superior mesenteric vein thrombosis. Further evaluation excluded inherited and acquired thrombophilia but revealed elevated testosterone levels. The patient was treated with anticoagulation, which resulted in recanalization of the portal and superior mesenteric veins.

Conclusion

Supraphysiologic levels of testosterone caused by testosterone implants as a treatment of hypoactive sexual desire in postmenopausal women can contribute to thrombotic events in the presence of additional prothrombotic risk factors. Therefore, testosterone therapy should include a thorough risk assessment for prothrombotic states, be tailored to patients’ physiologic testosterone levels, and have close follow-up with testosterone level monitoring.

An Interesting Presentation of Testosterone-Induced Arterial Thrombosis

Testosterone replacement therapy (TRT) is an industry on the rise in large part due to an increase in direct-to-customer advertising targeting middle-aged men with non-specific symptoms. The biggest problem with unnecessary prescribing is that testosterone therapy is not without side effects. One of the more common adverse effects is erythrocytosis with subsequent thrombosis. It was originally postulated that thrombosis seen in patients on TRT was solely related to increasing in hemoglobin however, new studies demonstrate increasing episodes of thrombosis unrelated to hemoglobin or hematocrit.

We report the case of a 38-year-old white male presenting to the clinic with infarction of bilateral feet and digits due to testosterone-induced thrombosis of dermal and epidermal arteries. Laboratory workup including vasculitis panel was negative and complete blood count (CBC) was within appropriate parameters. He was treated with anticoagulation, pain control, and vasodilatory therapy with subsequent improvement of symptoms.

There have been many reported cases of testosterone-induced thrombosis of the venous system with occasional involvement of the renal arteries. However, cases involving thrombosis of dermal or epidermal arteries due to testosterone supplementation have never been reported. It could be beneficial to screen potential patients requiring TRT for hypercoagulable states such as Factor V Leiden and lupus anticoagulant.

Benefits and Risks of Testosterone Treatment in Men with Age-Related Decline in Testosterone

The substantial increase in life expectancy of men has focused growing attention on quality-of-life issues associated with reproductive aging. Serum total and free testosterone levels in men, after reaching a peak in the second and third decade of life, decline gradually with advancing age. The trajectory of age-related decline is affected by comorbid conditions, adiposity, medications, and genetic factors. Testosterone treatment of older men with low testosterone levels improves overall sexual activity, sexual desire, and erectile function; improves areal and volumetric bone density, as well as estimated bone strength in the spine and the hip; corrects unexplained anemia of aging; increases skeletal muscle mass, strength and power, self-reported mobility, and some measures of physical function; and modestly improves depressive symptoms. The long-term effects of testosterone on major cardiovascular events and prostate cancer risk remain unclear. The Endocrine Society recommends against testosterone therapy of all older men with low testosterone levels but suggests consideration of treatment on an individualized basis in men who have consistently low testosterone levels and symptoms or conditions suggestive of testosterone deficiency.

Effect of long-term testosterone therapy on molecular regulators of skeletal muscle mass and fibre-type distribution in aging men with subnormal testosterone

BACKGROUND

Long-term testosterone replacement therapy (TRT) increases muscle mass in elderly men with subnormal testosterone levels. However, the molecular mechanisms underlying this effect of TRT on protein balance in human skeletal muscle in vivo remain to be established.

METHODS

Here, we examined skeletal muscle biopsies obtained before and 24-h after the last dose of treatment with either testosterone gel (n = 12) or placebo (n = 13) for 6 months in aging men with subnormal bioavailable testosterone levels. The placebo-controlled, testosterone-induced changes (β-coefficients) in mRNA levels, protein expression and phosphorylation were examined by quantitative real-time PCR and western blotting.

RESULTS

Long-term TRT increased muscle mass by β = 1.6 kg (p = 0.01) but had no significant effect on mRNA levels of genes involved in myostatin/activin/SMAD or IGF1/FOXO3 signalling, muscle-specific E3-ubiquitin ligases, upstream transcription factors (MEF2C, PPARGC1A-4) or myogenic factors. However, TRT caused a sustained decrease in protein expression of SMAD2 (β = -36%, p = 0.004) and SMAD3 (β = -32%, p = 0.001), which was accompanied by reduced protein expression of the muscle-specific E3-ubiquitin ligases, MuRF1 (β = -26%, p = 0.004) and Atrogin-1/MAFbx (β = -20%, p = 0.04), but with no changes in FOXO3 signalling. Importantly, TRT did not affect muscle fibre type distribution between slow-oxidative (type 1), fast-oxidative (type 2a) and fast-glycolytic (type 2×) muscle fibres.

CONCLUSIONS

Our results indicate that long-term TRT of elderly men with subnormal testosterone levels increases muscle mass, at least in part, by decreasing protein breakdown through the ubiquitin proteasome pathway mediated by a sustained suppression of SMAD-signalling and muscle-specific E3-ubiquitin ligases.

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.

New testosterone 2% gel using Ferring Advanced Skin Technology (FAST), for the treatment of testosterone deficiency in men, with a novel applicator

INTRODUCTION

Testosterone deficiency (TD) is an increasing problem that can affect a man's physical and psychological health, and quality of life. Testosterone replacement therapy (TRT), combined with weight reduction, lifestyle advice, and the treatment of co-morbidities, is the treatment of choice in men who are not concerned about fertility. However, there remains an unmet need in this therapeutic area, relating to factors such as inconvenient or painful administration, fluctuations in testosterone levels, supra-physiologic testosterone levels, poor tolerability, and secondary safety issues, which may be associated with the current TRT options. Advances in transdermal delivery systems have resulted in the development of a new 2% transdermal testosterone gel, that may offer some additional features over the other currently available TRTs.

AREAS COVERED

We performed a comprehensive review of the published and gray literature to identify randomized studies and non-randomized studies (NRS) involving adult men receiving treatment for low testosterone levels.

EXPERT OPINION

Topical gels are often the most convenient first-line treatment for testosterone deficiency, but options are important as patient preference is more important than virtually any other clinical area of medicine. The chosen therapy must be convenient to use and reach reliable therapeutic levels to effectively and consistently relieve symptoms. Testavan, a new 2% testosterone gel, goes some way to achieving these goals.

A case of isolated cortical venous thrombosis presenting radiographically as a subacute multifocal leukoencephalopathy, and review of literature

A 55-year-old man presented with brief seizure with associated acute aphasia, right head turn and subsequent generalised convulsion. On imaging, he was found to have patchy juxtacortical and cortical T2 hyperintensity with high radiographic suspicion for subacute multifocal leukoencephalopathy. Serum and cerebrospinal fluid testing were unremarkable. Clinically, the patient recovered completely and had no recurrence of symptoms. On follow-up MRI 1 month later, the T2 hyperintensity had resolved almost entirely while hypointensity on susceptibility-weighted angiography MRI remained, suggesting isolated cortical venous thrombosis.