Gender-affirming hormone treatment modalities for transfemale & non-binary transfeminine individuals: A UK perspective.

Gender incongruence and the number of people seeking gender affirming hormone treatment has dramatically risen in the last two decades. In the UK, transgender women and non-binary transfeminine individuals are typically treated with simultaneous suppression of endogenous testosterone production through anti-androgens and exogenous oestradiol replacement. Oestrogen replacement comes in different forms and is primarily given as transdermal (gel or patch) or oral preparations in the UK. Decisions around preparation choice are based on a combination of individual preference and/or mitigating the chance of complications based on individual risk profiles. Time frames to achieve female physical changes are largely predictable and managing expectations of individuals prior to commencing treatment is highly important. Common complications include venous thromboembolism, liver dysfunction and effects on fertility, thus individuals should be thoroughly counselled prior to commencing treatment. This article provides an overview of the management and considerations of gender-affirming hormone treatment in transgender women and non-binary transfeminine individuals.

The Role of Sex and Gender in Transgender Bone and Other Musculoskeletal Health.

ABSTRACT: Musculoskeletal changes occur with gender-affirming hormonal therapy (GAHT) and gender-affirming surgery (GAS) used in the care of transgender adolescents and adults. Survey results have shown that orthopaedic surgeons desire to care for transgender individuals but express concern over a knowledge deficit. This article reviews the physiology and pathophysiology that may occur with GAHT and GAS. Transgender women have lower bone mineral density (BMD) prior to GAHT than cisgender men. Limited fracture data would suggest that transgender women >50 years of age have fracture rates similar to those of cisgender women. Transgender men have normal BMD prior to GAHT and are not at an increased risk for fracture compared with cisgender women. The use of puberty-blocking medications in the care of transgender youth does result in a decline in BMD, which returns to baseline with GAHT, but the effect of delaying puberty on maximal BMD and the lifetime fracture risk are unknown. At present, dual x-ray absorptiometry (DXA) is used to measure BMD and assess fracture risk. Attention should be paid to using the appropriate reference group in the interpretation of DXA for transgender individuals. Promote musculoskeletal health by ensuring appropriate calcium, vitamin D, weight-bearing activity, and a healthy lifestyle. Adherence to GAHT needs to be encouraged to avoid bone loss. Data with regard to therapy for osteoporosis in transgender patients have been lacking, but, at present, use of available therapies is expected to be effective. Information with regard to differences in other musculoskeletal health issues such as joint injuries has been lacking in transgender individuals.

Incidence of High Risk and Malignant Pathological Findings in Transgender and Gender Diverse Individuals Undergoing Gender-Affirming Mastectomy.

BACKGROUND: Concrete, data-driven guidelines for breast cancer screening among the transgender and gender diverse (TGD) population is lacking. The present study evaluates possible associations of gender-affirming hormone therapy (GAHT) on incidental breast pathology findings in trans-masculine patients to inform decision making about breast cancer screening. PATIENTS AND METHODS: This was a retrospective cohort study of patients who had gender-affirming mastectomy or breast reduction at a single center from July 2019 to February 2024. A total of 865 patients met the inclusion criteria. Gender-affirming testosterone therapy and length of exposure were evaluated to seek differences in post-operative pathology findings. RESULTS: The median age at the time of surgery was 27 years [interquartile range (IQR) 21-30]. Most participants identified as female to male (658, 75.6%). A significant portion of the participants (688, 79.2%) were undergoing testosterone therapy at the time of surgery, with the median duration of testosterone use prior to surgery being 14 months (IQR 4-29). High risk or malignant findings were noted in pathology results for 12 of 1730 breasts (0.7%). Ordered logistic regression found that duration of testosterone therapy was not associated with increasing severity of incidental breast pathology. Additionally, patients under 25 years of age were 70% less likely to have any incidental finding on pathological evaluation than older patients [odds ratio (OR) 0.3, p < 0.01, confidence interval (CI) 0.18-0.50]. CONCLUSIONS: The present study found that patients undergoing GAHT should not be screened for breast cancer with increased frequency compared with cis-gender women. Additionally, it may be appropriate for trans women under the age of 25 with normal breast cancer risk to forego pathological breast tissue examination.

The implications of hormone treatment for cancer risk, screening and treatment in transgender individuals.

There is evidence that gender-affirming hormone treatment (GAHT) for transgender individuals modulates their risk for specific malignancies including breast and prostate cancer, and meningiomas. However, there is insufficient data to make precise risk estimates accounting for age and inherited cancer risk. As such, screening recommendations remain broad. Even less evidence exists for best practice in the management of active or historical cancers in the transgender population. Guidance is therefore mainly extrapolated from cisgender populations but with considerations of the significant benefits of GAHT in the face of any hormonal risk. Clinical experience, the multidisciplinary team and shared decision making with the patient are vital in providing person-centred care, while further research is acquired.

Effect of testosterone therapy on breast tissue composition and mammographic breast density in trans masculine individuals.

BACKGROUND: The effect of gender-affirming testosterone therapy (TT) on breast cancer risk is unclear. This study investigated the association between TT and breast tissue composition and breast tissue density in trans masculine individuals (TMIs). METHODS: Of the 444 TMIs who underwent chest-contouring surgeries between 2013 and 2019, breast tissue composition was assessed in 425 TMIs by the pathologists (categories of lobular atrophy and stromal composition) and using our automated deep-learning algorithm (% epithelium, % fibrous stroma, and % fat). Forty-two out of 444 TMIs had mammography prior to surgery and their breast tissue density was read by a radiologist. Mammography digital files, available for 25/42 TMIs, were analyzed using the LIBRA software to obtain percent density, absolute dense area, and absolute non-dense area. Linear regression was used to describe the associations between duration of TT use and breast tissue composition or breast tissue density measures, while adjusting for potential confounders. Analyses stratified by body mass index were also conducted. RESULTS: Longer duration of TT use was associated with increasing degrees of lobular atrophy (p < 0.001) but not fibrous content (p = 0.82). Every 6 months of TT was associated with decreasing amounts of epithelium (exp(ß) = 0.97, 95% CI 0.95,0.98, adj p = 0.005) and fibrous stroma (exp(ß) = 0.99, 95% CI 0.98,1.00, adj p = 0.05), but not fat (exp(ß) = 1.01, 95%CI 0.98,1.05, adj p = 0.39). The effect of TT on breast epithelium was attenuated in overweight/obese TMIs (exp(ß) = 0.98, 95% CI 0.95,1.01, adj p = 0.14). When comparing TT users versus non-users, TT users had 28% less epithelium (exp(ß) = 0.72, 95% CI 0.58,0.90, adj p = 0.003). There was no association between TT and radiologist's breast density assessment (p = 0.58) or LIBRA measurements (p > 0.05). CONCLUSIONS: TT decreases breast epithelium, but this effect is attenuated in overweight/obese TMIs. TT has the potential to affect the breast cancer risk of TMIs. Further studies are warranted to elucidate the effect of TT on breast density and breast cancer risk.

Uterine changes in transgender men receiving testosterone therapy.

OBJECTIVES: Despite regular gender-affirming hormone therapy (GAHT), the presence of uterine bleeding can occur occasionally and cause profound discomfort. This study aimed to evaluate the histologic features and immunohistochemical expression of estrogen (ER), progesterone (PR), and androgen receptors (AR) in the endometrium and myometrium of transgender men receiving testosterone therapy and relate them to clinical and hormonal characteristics. DESIGN: Retrospective cross-sectional study. METHODS: Thirty-four transgender men undergoing gender-affirming surgery were included. Clinical, sociodemographic, and laboratory data as well as anatomopathological and immunohistochemical findings were evaluated. RESULTS: The participants' mean age was 42.35 (SD, 10.00) years, and body mass index was 28.16 (SD, 5.52) kg/m2. The mean GAHT duration before surgery was 5.36 (SD, 3.24) years. The mean testosterone levels were 814.98 (SD, 407.13) ng/dL, and estradiol levels were 55.22 (SD, 25.27) pg/mL. The endometrium was atrophic in 61.8%, proliferative in 17.6%, and secretory in 20.6%. Immunohistochemical receptor analysis revealed that endometrial epithelial cells expressed ER (90%) and PR (80%), with a lower expression of AR (30%). In stromal tissue, the median ER, PR, and AR expression was lower than that in the epithelium (60%, 70%, and 25%, respectively). The myometrium showed high expression of PR (90%) and ER (70%), with the highest expression of AR (65%) being localized to this region. CONCLUSIONS: In the present study, GAHT induced an atrophic condition of the endometrium in two-thirds of the transgender men, with a limited AR expression in the endometrial region. The present results suggest that testosterone-based GAHT for a mean of 5 years is safe in transgender men achieving amenorrhea.

Sexual health in transgender and gender diverse people.

PURPOSE OF REVIEW: Sexual health and sexual function are critical to the wellbeing of cisgender, transgender, and gender diverse populations. To date, there has been only limited patient-focused evaluation of sexual function in transgender and gender diverse patients at several stages in their gender-affirming medical care. There remains a need to better understand the impact of gender affirming medical and surgical therapy on sexual health, and to develop evidence-based treatments to address sexual dysfunction when present. RECENT FINDINGS: The impact of gender-affirming hormone therapy on sexual health is complex and evolves over time on treatment. Despite high incidences of complications, major genital gender-affirming surgeries such as vulvovaginoplasty and penile implant placement after phalloplasty yield high patient satisfaction. While treatments to preserve or restore erections and to improve vaginal lubrication have been trialed based upon literature in cisgender populations, there remains minimal evidence to guide medical treatment of sexual dysfunction ranging from erectile dysfunction to dyspareunia. SUMMARY: There is a continued need for ongoing efforts to develop patient-reported outcome measures and rigorous investigation of sexual health preservation and restoration treatments in transgender and gender diverse populations.

Thrombotic risk associated with gender-affirming hormone therapy.

Transgender and gender-expansive (TG) people-those who identify with a gender other than their assigned sex at birth-frequently experience gender dysphoria, which is associated with negative health outcomes. One key strategy for improving gender dysphoria is the use of gender-affirming hormone therapy (GAHT): estrogen for feminization and testosterone for masculinization. Estrogen use in cisgender women is associated with well-established changes in hemostatic parameters, including increases in prothrombotic factors and decreases in inhibitors of coagulation. Cisgender women using estrogen have an increased risk of thrombosis. Studies of thrombosis risk associated with estrogen GAHT in TG people are less robust, with some studies limited by the use of hormones and hormone management strategies that are no longer recommended. However, TG women using estrogen appear to be at increased risk of both arterial and venous thrombosis, which may increase with longer time on estrogen. Testosterone use in both cisgender and transgender men is associated with increases in hemoglobin and hematocrit, which can lead to erythrocytosis and thus increased risk of thrombosis. The results of studies evaluating thrombosis risk in the setting of testosterone use are mixed. This review presents an overview of alterations in hemostatic parameters and thrombosis risk associated with use of exogenous estrogen and testosterone. Understanding what is known and unknown about thrombosis risk associated with use of these hormones is essential for hematologists who may be asked to evaluate TG people and provide guidance on management of those who may be at increased risk of thrombosis.

Association between serum estradiol and cardiovascular health among transgender adults using gender-affirming estrogen therapy.

Gender-affirming estrogen therapy (GAET) is commonly used for feminization in transgender and nonbinary (TNB) individuals, yet the optimal rate of change (ROC) in estradiol levels for cardiovascular health is unclear. We examined the association between serum estradiol levels and cardiovascular-related mortality, adverse events, and risk factors in TNB adults using GAET. Cochrane Central Register of Controlled Trials, EMBASE, MEDLINE, and Web of Science were systematically searched (inception-April 2023) for original articles reporting serum estradiol levels and cardiovascular-related mortality, adverse events, and risk factors in TNB adults using GAET. Data extraction was completed in duplicate following Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. Stratified random effect meta-analyses using serum estradiol ROC (serum estradiolbaseline - serum estradiolfollow-up/study duration) was used to assess longitudinal studies (low, 0 < ROC ≤ 1 pg/mL/mo; moderate, 1 < ROC ≤ 3 pg/mL/mo; high, ROC ≥ 3 pg/mL/mo). Thirty-five studies (13 cross-sectional, 19 cohort, and 3 trials) were included. Two studies collectively reported 50 cardiovascular-related deaths, and four collectively reported 23 adverse cardiovascular events. Nineteen studies reporting cardiovascular risk factors were meta-analyzed by ROC stratum (low = 5; moderate = 6; high = 8), demonstrating an association between moderate [0.40, 95% confidence interval (CI): 0.22, 0.59 kg/m2, I2 = 28.2%] and high (0.46, 95% CI: 0.15, 0.78 kg/m2; I2 = 0.0%) serum estradiol ROC and increased body mass index. High (-6.67, 95% CI: -10.65, -2.68 mg/dL; I2 = 0.0%) serum estradiol ROC was associated with decreased low-density lipoproteins. Low (-7.05, 95% CI: -10.40, -3.70 mmHg; I2 = 0.0%) and moderate (-3.69, 95% CI: -4.93, -2.45 mmHg; I2 = 0.0%) serum estradiol ROCs were associated with decreases in systolic blood pressure. In TNB adults using GAET, serum estradiol ROC may influence cardiovascular risk factors, which may have implications for clinical cardiovascular outcomes.NEW & NOTEWORTHY In this systematic review and meta-analysis of 35 studies involving 7,745 participants, high rates of serum estradiol change were associated with small increases in body mass index. Moderate to high rates of change were associated with decreases in low-density lipoprotein. Low rates of change were associated with small decreases in systolic blood pressure. Rate of serum estradiol change in adults using gender-affirming estrogen therapy may influence cardiovascular risk factors, though further research is warranted.

Breaking the Binary: The Approach to Chest Masculinizing Gender-Affirming Surgery in Trangender Men.

BACKGROUND: The purpose of mastectomy for the transgender patient is to produce a masculine appearance of the chest. A number of algorithms have been proposed for selecting the surgical technique. A holistic and surgical approach to transgender men includes our experience-based classification system for selecting the correct surgical technique. OBJECTIVES: To present and discuss the Transgender Standard of Care and our personal experience. METHODS: Data were collected from the files of female-to-male transgender persons who underwent surgery during 2003-2019. Pictures of the patients were also analyzed. RESULTS: Until May 2021, 342 mastectomies were performed by the senior author on 171 patients. The 220 mastectomies performed on 110 patients until November 2019 were included in our cohort. Patient age was 13.5 to 50 years (mean 22.5 ± 6.1). The excision averaged 443 grams per breast (range 85-2550). A periareolar approach was performed in 14 (12.7%), omega-shaped resection (nipple-areola complex on scar) in 2 (1.8%), spindle-shaped mastectomy with a dermal nipple-areola complex flap approach in 38 (34.5%), and a complete mastectomy with a free nipple-areola complex graft in 56 (50.9%). Complications included two hypertrophic scars, six hematomas requiring revision surgery, three wound dehiscences, and three cases of partial nipple necrosis. CONCLUSIONS: A holistic approach to transgender healthcare is presented based on the World Professional Association for Transgender Health standard of care. Analysis of the data led to Wolf's classification for female-to-male transgender mastectomy based on skin excess and the distance between the original and the planned position of the nipple-areola complex.

Risk of Venous Thromboembolism in Transgender People Undergoing Hormone Feminizing Therapy: A Prevalence Meta-Analysis and Meta-Regression Study.

Background: Although venous thromboembolism (VTE) is a recognized side effect of some formulations of estrogen therapy, its impact in transgender people remains uncertain. The aim of this study was to define pooled prevalence estimate and correlates of VTE in Assigned Males at Birth (AMAB) trans people undergoing gender affirming hormone therapy. Methods: A thorough search of MEDLINE, COCHRANE LIBRARY, SCOPUS and WEB OF SCIENCE databases was carried out to identify suitable studies. Quality of the articles was scored using the Assessment Tool for Prevalence Studies. Data were combined using random effects models and the between-study heterogeneity was assessed by the Cochrane's Q and I2. Results: The eighteen studies included gave information about 11,542 AMAB undergoing gender affirming hormone therapy. The pooled prevalence of VTE was 2% (95%CI:1-3%), with a large heterogeneity (I2 = 89.18%, P<0.0001). Trim-and-fill adjustment for publication bias produced a negligible effect on the pooled estimate. At the meta-regression analysis, a higher prevalence of VTE was significantly associated with an older age (S=0.0063; 95%CI:0.0022,0.0104, P=0.0027) and a longer length of estrogen therapy (S=0.0011; 95%CI:0.0006,0.0016, P<0.0001). When, according to the meta-regression results, the analysis was restricted to series with a mean age ≥37.5 years, the prevalence estimate for VTE increased up to 3% (95%CI:0-5%), but with persistence of a large heterogeneity (I2 = 88,2%, P<0.0001); studies on younger participants (<37.5 years) collectively produced a pooled VTE prevalence estimate of 0% (95%CI:0-2%) with no heterogeneity (I2 = 0%, P=0.97). Prevalence estimate for VTE in series with a mean length of estrogen therapy ≥53 months was 1% (95%CI:0-3%), with persistent significant heterogeneity (I2 = 84,8%, P=0.0006); studies on participants subjected to a shorter length of estrogen therapy (<53 months), collectively produced a pooled VTE prevalence estimate of 0% (95%CI:0-3%) with no heterogeneity (I2 = 0%, P=0.76). Conclusions: The overall rate of VTE in AMAB trans people undergoing gender affirming hormone therapy was 2%. In AMAB population with <37.5 years undergoing estrogen therapy for less than 53 months, the risk of VTE appears to be negligible. Further studies are warranted to assess whether different types and administration routes of estrogen therapy could decrease the VTE risk in AMAB trans people over 37.5 years subjected to long-term therapy. Systematic Review Registration: [https://www.crd.york.ac.uk/PROSPERO/], identifier [CRD42021229916].

Ovarian, breast, and metabolic changes induced by androgen treatment in transgender men.

Gender-affirming hormone therapy (GAHT) is often provided to transgender people. In this review of the literature, the current knowledge of ovarian, breast, and metabolic changes (body composition, insulin resistance, bone density, cardiovascular risk factors such as lipids, blood pressure, and hematocrit) observed following GAHT in adult transgender men is discussed. A body of literature concurs to describe that long-term androgen therapy in transgender men exerts atrophic effects on the breast. There is currently no evidence of an increased risk of breast cancer. Long-term testosterone treatment induces ovarian effects that become visible after 6 months of therapy. These changes consist of both macroscopic and microscopic alterations of ovarian morphology that mimic the typical ovarian aspect encountered in women with polycystic ovary syndrome but without an effect on antral follicle count. Metabolic effects of long-term androgen treatment in transgender men put them at par with cisgender men in terms of lipid profile, insulin resistance, and overall mortality. Body composition changes as desired after testosterone administration in most transgender men, and insulin resistance decreases with virilization. There are no detrimental effects on bone mineral density. Cardiometabolic risk and morbidity data are currently reassuring, even if certain studies show conflicting results. An increase in blood pressure and a decrease in high-density lipoprotein cholesterol have been reported as risk factors, whereas polycythemia is rare and treatable. Most available data are observational and based on biochemical markers instead of the more direct measures of cardiovascular damage. An explanation for these observed changes is mostly lacking. Psychological stress and lifestyle factors are often forgotten in a much needed integrated approach.

Transgender men: clinical care and implications in reproductive medicine: introduction.

Gender dysphoria, a discrepancy between gender identity and genetically determined sex, is encountered in approximately 0.5% of people uniformly across the world. In the case of transgender men, formerly called female-to-male transsexuals, the available gender-affirming measures, hormone therapy and possible surgical procedures, are multiple and discussed in detail in this series of articles.

The uterus in transgender men.

Transgender men experience a disharmony between their birth sex and their intimate sense of gender belonging. Gender-affirming hormone therapy and gender-affirming surgery (GAS) are often inherently part of the gender-affirming process. In this context, we should ask whether it is better to keep or remove the uterus. Keeping the uterus and ovaries avoids a surgical procedure and a pubic scar. Furthermore, it preserves fertility and the possibility of carrying a baby. On the other hand, keeping the uterus is often psychologically unbearable for transgender men and the long-term effects of androgens on the uterus and ovaries remain uncertain. Conversely, hysterectomy and oophorectomy are part of the GAS process. New mini-invasive surgery procedures for hysterectomies decrease the risks and limit the likelihood of scars to a minimum. In practice, the data suggest that very few transgender men carry a pregnancy and/or use their oocytes after gender-reaffirming treatment. Clinicians should counsel their transgender men patients about the definitive infertility consequences of hysterectomy and oophorectomy and discuss all fertility preservation options before undertaking GAS. Individualized approaches must be preferred to systematic procedures regarding the personal decision to keep or not keep the uterus and ovaries.

Masculinizing gender-affirming surgery for trans men and non-binary individuals: what you should know.

Gender dysphoria, the discordance between one's gender identity and anatomy, affects nearly 25 million people worldwide, and the prevalence of transgender and non-binary identities is increasing because of greater acceptance and awareness. Because of the improved accessibility to gender-affirming surgery (GAS), many providers will care for patients during and after gender transition. For trans men (female-to-male), GAS represents a combination of procedures rather than a single surgery. The particular combination of masculinizing procedures is chosen on the basis of informed patient-provider discussions regarding the patient's goals and anatomy and implemented through a multidisciplinary team approach. In this review, we describe the common procedures comprising masculinizing GAS to improve delivery of specialized care for this patient population.

Reproductive functions and fertility preservation in transgender women: a French case series.

RESEARCH QUESTION: The reproductive potential of transgender people may be impaired by gender-affirming hormone treatment (GAHT) and is obviously suppressed by gender-affirming surgery involving bilateral orchiectomy. The evolution of medical support for transgender people has made fertility preservation strategies possible. Fertility preservation in transgender women mainly relies on sperm cryopreservation. There are few studies on this subject, and the sample sizes are small, and so it difficult to know whether fertility preservation procedures are feasible and effective in trans women. DESIGN: This retrospective study reports the management of fertility preservation in transgender women referred to the study centre for sperm cryopreservation, and the semen parameters of trans women were compared with those of sperm donors. RESULTS: Ninety-six per cent of transgender women who had not started treatment benefitted from sperm cryopreservation, compared with 80% of those who attempted a therapeutic window and 50% of those receiving hormonal treatment at the time of sperm collection. No major impairment of semen parameters was observed in transgender women who had not started GAHT compared with sperm donors. However, even though the frequency of oligozoospermia was no different, two transgender women presented azoospermia. Some transgender women who had started GAHT could benefit from sperm freezing. None of them were treated with gonadotrophin-releasing hormone (GnRH) analogues. CONCLUSIONS: Parenthood strategies for transgender people have long been ignored, but this is an important issue to consider, especially because medical treatments and surgeries may be undertaken in adolescents or very young adults. Fertility preservation should ideally be offered prior to initiation of GAHT.

Low feasibility of in vitro matured oocytes originating from cumulus complexes found during ovarian tissue preparation at the moment of gender confirmation surgery and during testosterone treatment for fertility preservation in transgender men.

OBJECTIVE: To study the feasibility of in vitro maturation of ovarian tissue oocytes for fertility preservation in transgender men on testosterone treatment. DESIGN: Cross-sectional study SETTING: University hospital PATIENT(S): Eighty-three transgender men enrolled from November 2015 to January 2019 INTERVENTION(S): In vitro maturation of cumulus-oocyte complexes (COCs) harvested at the time of gender confirmation surgery, and fertilization through intracytoplasmic sperm injection. MAIN OUTCOME MEASURE(S): In vitro maturation, fertilization, and blastulation rates; comparison of morphokinetics with vitrified-warmed oocytes; and analysis of the genetic profiles of embryos. SECONDARY OUTCOMES: association between serum hormone levels; COCs' morphologic characteristics, and vitrification rate. RESULT(S): All participants were on testosterone treatment for a median of 83 (64[Quartile 1]; 113.2[Quartile 2]) weeks. A total of 1,903 COCs (mean per participant, 23 ± 15.8) were collected. The in vitro maturation rate was 23.8%, vitrification rate was 21.5%, and survival rate after warming was 72.6% (n = 151). Intracytoplasmic sperm injection was performed in 139 oocytes. The rate of normal fertilized oocytes was 34.5%, and 25 (52.1%) embryos reached day 3. One blastocyst was achieved on day 5. Aberrant cleavage patterns and early embryo arrest were observed in 22 (45.8%) and 44 (91.7%) zygotes, respectively. Compared with vitrified-warmed donor oocytes, a delay was observed in pronuclei disappearance, t2 (time to reach 2 cell stage) timings, and CC1 (the duration of the 1st cell cycle) and SS3 (synchronization of cleavage pattern (calculated as t8-t5) time intervals. A normal genetic pattern was seen in 42% embryos. The proportion of vitrified oocytes was negatively associated with progesterone (odds ratio, 0.76) and positively associated with antimüllerian hormone serum levels (odds ratio, 1.23). The highest vitrification rate was achieved by the morphologic characteristic 344 at day 0 and by 433 at day 2. CONCLUSION(S): Ovarian tissue oocytes matured in vitro show low developmental capacity in transgender men, when collected under testosterone treatment.

Implications for management of ovarian cancer in a transgender man: Impact of androgens and androgen receptor status.

A 36-year-old transgender man (assigned female at birth) on exogenous testosterone therapy was found to have stage IIA ovarian endometrioid carcinoma, and underwent adjuvant chemotherapy. Diffuse androgen receptor expression in the tumor initiated a multidisciplinary discussion regarding the safety of continuing exogenous testosterone as gender-affirming hormone therapy.

Research gaps in medical treatment of transgender/nonbinary people.

With the growing number of transgender and gender-nonbinary individuals who are becoming visible, it is clear that there is a need to develop a rigorous evidence base to inform care practice. Transgender health research is often limited to HIV/AIDS or mental health research and is typically subsumed in larger studies with general LGBTQ focus. Although the number of knowledgeable health care providers remains modest, the model for the medical approach to transgender health is shifting owing to growing social awareness and an appreciation of a biological component. Gender-affirming medicine facilitates aligning the body of the transgender person with the gender identity; typical treatment regimens include hormone therapy and/or surgical interventions. While broadly safe, hormone treatments require some monitoring for safety. Exogenous estrogens are associated with a dose-dependent increase in venous thromboembolic risk, and androgens stimulate erythropoiesis. The degree to which progressing gender-affirming hormone treatment changes cancer risk, cardiac heart disease risk, and/or bone health remains unknown. Guidelines referencing the potential exacerbation of cancer, heart disease, or other disease risk often rely on physiology models, because conclusive clinical data do not exist. Dedicated research infrastructure and funding are needed to address the knowledge gap in the field.