Growth hormone treatment in children with Prader-Willi syndrome: safety and effectiveness data from the PATRO Children study.

Background: Recombinant human growth hormone (rhGH, somatropin) therapy is approved in children with Prader-Willi syndrome (PWS). Objectives: To report safety and effectiveness data for children with PWS treated with biosimilar rhGH (Omnitrope®, Sandoz) in the PAtients TReated with Omnitrope (PATRO) Children study. Design: PATRO Children was a multicenter, non-interventional, postmarketing surveillance study. Methods: Children with PWS received Omnitrope according to standard clinical practice. Adverse events (AEs) were monitored for the duration of Omnitrope treatment. Effectiveness outcomes were also assessed, including height standard deviation (SD) scores (HSDS). Results: As of July 2020 (study completion), 235 patients with PWS had been enrolled. At baseline, 95.7% (n = 225) of patients were prepubertal and 86.4% (n = 203) were rhGH treatment-naïve. At analysis, the median (range) treatment duration in the study was 56.8 (2.9-155.8) months. AEs were reported in 192 patients (81.7%) and were suspected as treatment-related in 39 patients (16.6%). Serious AEs (SAEs) were reported in 96 patients (40.9%) and were suspected as treatment-related in 22 patients (9.4%). The most frequent treatment-related SAEs were sleep apnea syndrome (n = 11; 4.7%), tonsillar hypertrophy (n = 4; 1.7%), and adenoidal hypertrophy (n = 4; 1.7%). Development of scoliosis was considered treatment-related in two patients; development of impaired glucose tolerance in one patient and type 2 diabetes mellitus in another patient were considered treatment-related. Effectiveness outcomes were primarily assessed in 153 patients who completed 3 years of treatment. Among the 151 prepubertal patients (135 treatment-naïve), mean (SD) change from baseline in HSDS after 3 years was +1.50 (1.07) across all patients and +1.57 (1.07) for treatment-naïve patients. Conclusion: These data suggest that biosimilar rhGH is well tolerated and effective in patients with PWS managed in real-life clinical practice. Patients with PWS should continue to be closely monitored for well-known safety issues (including respiratory, sleep, and glucose metabolism disorders, and scoliosis) during rhGH treatment.

The Impact of Hormone Replacement Therapy on the Risk of Heart Failure in Postmenopausal Women: A Meta-Analysis of Clinical and Observational Studies.

PURPOSE: The relationship between heart failure (HF) and hormone replacement therapy (HRT) in postmenopausal women remains unclear. This paper aimed to elucidate the association between HRT and HF outcomes in postmenopausal women by scrutinizing evidence from clinical trials and observational studies. METHODS: The meta-analysis was systematically executed following the PRISMA guidelines to include studies identified from the electronic databases, including PubMed, EMBASE, EBSCO, ICTRP, and NIH clinical trials. The primary endpoint of the effect comprised risk ratios (RR) for HF incidence and mortality, attended by 95% confidence intervals (CIs). The risk of bias was assessed employing the Cochrane Risk of Bias 2 (RoB2) tool for clinical trials and the Newcastle-Ottawa Scale (NOS) for observational studies. RESULTS: The search yielded a total of eight reports, originating from six individual studies, for inclusion in the current study, and 25 047 participants were included. The meta-analysis demonstrated no remarkable association between HRT and the incidence of HF in postmenopausal women (RR: 1.07, 95% CI: 0.91-1.25, p = 0.37). However, a significant reduction in all-cause mortality was observed among post-menopausal HF patients who received HRT (RR: 0.65, 95% CI: 0.49-0.87, p = 0.003). In age-related subgroup analyses, no significant change in the risk of HF was noticed among participants on HRT. CONCLUSIONS: The findings of this paper demonstrate that HRT use is not associated with a significant increase in the risk of incident HF. This meta-analysis also suggests a benefit in all-cause mortality when HRT is administered to postmenopausal women with HF.

Efficacy and Safety of TransCon PTH in Adults with Hypoparathyroidism: 52-Week Results From the Phase 3 PaTHway Trial.

CONTEXT: Conventional therapy for hypoparathyroidism aims to alleviate symptoms of hypocalcemia but does not address insufficient parathyroid hormone (PTH) levels. OBJECTIVE: Assess the long-term efficacy and safety of TransCon PTH (palopegteriparatide) for hypoparathyroidism. DESIGN: Phase 3 trial with a 26-week double-blind, placebo-controlled period followed by a 156-week open-label extension (OLE). SETTING: 21 sites across North America and Europe. PARTICIPANTS: 82 adults with hypoparathyroidism were randomized and received study drug and 78 completed week 52. INTERVENTION(S): All OLE participants received TransCon PTH administered once daily. MAIN OUTCOME MEASURE(S): Multi-component efficacy endpoint: proportion of participants at week 52 who achieved normal serum calcium (8.3-10.6 mg/dL) and independence from conventional therapy (≤600 mg/day of elemental calcium and no active vitamin D). Other efficacy endpoints included patient-reported outcomes (PROs) and bone mineral density (BMD). Safety was assessed by 24-hour urine calcium and treatment-emergent adverse events (TEAEs). RESULTS: At week 52, 81% (63/78) met the multi-component efficacy endpoint, 95% (74/78) achieved independence from conventional therapy, and none required active vitamin D. PROs showed sustained improvements in quality of life, physical functioning, and well-being. Mean BMD Z-scores decreased toward age- and sex-matched norms from baseline to week 52. Mean (SD) 24-hour urine calcium excretion decreased from 376 (168) mg/day at baseline to 195 (114) mg/day at week 52. Most TEAEs were mild or moderate and none led to trial discontinuation during the OLE. CONCLUSIONS: At week 52 of the PaTHway trial, TransCon PTH showed sustained efficacy, safety, and tolerability in adults with hypoparathyroidism.

Research status of hormone replacement therapy on mood and sleep quality in menopausal women.

Menopausal syndrome is a common disease of clinical women, which refers to a series of physical and mental symptoms caused by the fluctuation or reduction of sex hormones before and after menopause. Many of these patients have sleep and mood abnormalities that affect their health and quality of life. At present, the understanding of it is gradually improving. This paper mainly analyzes its background and current treatment.

Prevalence and impact of vasomotor symptoms associated with menopause among women in Brazil: Subgroup analysis from an international cross-sectional survey.

OBJECTIVE: This study assessed the prevalence and impact of moderate and/or severe vasomotor symptoms and related treatment patterns in midlife women in Brazil. STUDY DESIGN: Brazilian women aged 40 to 65 years completed an online survey. The prevalence of moderate to severe vasomotor symptoms was assessed in postmenopausal women who completed a series of questionnaires to elicit responses regarding their treatment patterns and attitudes to treatments. MAIN OUTCOME MEASURES: Perimenopausal and postmenopausal women with moderate to severe vasomotor symptoms completed three standardized questionnaires (Menopause-Specific Quality of Life questionnaire, Work Productivity and Activity Impairment questionnaire, and the Patient-Reported Outcomes Measurement Information System Sleep Disturbances Short Form 8b) and answered open-ended questions. RESULTS: Of 1244 postmenopausal women who accessed the survey, 36.2 % had experienced moderate to severe vasomotor symptoms in the previous month. Moderate to severe vasomotor symptoms among 501 perimenopausal and postmenopausal women negatively affected overall quality of life (mean total score on the Menopause-Specific Quality of Life questionnaire was 3.6/8). On the Work Productivity and Activity Impairment questionnaire, women's scores for impairments in overall work and daily activities due to vasomotor symptoms were 50.3 % and 60.0 %, respectively. Overall mean (standard deviation) score on the Patient-Reported Outcomes Measurement Information System Sleep Disturbances Short Form 8b was 25.5 (5.8) on a scale of 8 to 40. Most women sought medical advice (65.5 %), but over half were not receiving treatment. Those who received treatment reported moderately favorable attitudes to hormone and nonhormone prescription medicines, but safety concerns remained. CONCLUSION: Brazilian women experienced a relatively high prevalence and burden of moderate to severe vasomotor symptoms.

Influence of the Onset of Menopause on the Risk of Developing Alzheimer's Disease.

Menopause is a natural phase marked by the permanent cessation of menstrual cycles, occurring when the production of reproductive hormones from the ovaries stops for at least 12 consecutive months. Studies have suggested a potential connection between menopause and a heightened risk of developing Alzheimer's disease (AD), underscoring the significant role of reduced estrogen levels in the development of AD. Estrogen plays a crucial role in brain metabolism, influencing energy metabolism, synaptic plasticity, and cognitive functions. The cognitive benefits associated with hormone replacement therapy (HRT) are believed to be linked to estrogen's neuroprotective effects, either through direct action on the brain or indirectly by improving cardiovascular health. Extensive literature supports the positive impact of estrogen on brain cells. While the physiological effects of estrogen on the brain have not been consistently replicated in clinical trials, further research is crucial to provide more definitive recommendations to menopausal patients regarding the influence of HRT on AD. This review aims to comprehensively explore the interplay between menopause and AD, as well as the potential of HRT to mitigate cognitive decline in post-menopausal individuals.

Non-hormonal pharmacological interventions for managing vasomotor symptoms-how can we help: 2024 landscape.

BACKGROUND: Vasomotor symptoms (VMS) affect 70% of menopausal women and are considered as hallmark symptoms of the menopausal transition experienced by over three quarters of women and severely by 25% of women. Estrogen withdrawal alone is not fully responsible for the onset of the menopausal vasomotor symptoms and the mechanism of altered thermoregulation appears to be centrally mediated with alterations in hypothalamic neurotransmitters playing a key part. The loss of thermoregulatory control coexists with the altered Kisspeptin- Neurokinin B-Dynorphin-expressing (KNDy) neurons of the arcuate nucleus signaling triggered by menopause. OBJECTIVE: Aim of the review was to explore evidence-based non-hormonal pharmacological interventions for treating vasomotor symptoms. METHODS: Comprehensive overview of relevant literature. CONCLUSIONS: In the population where, hormonal options are contraindicated or not preferred by the patient, it is essential to explore evidence-based non-hormonal pharmacological interventions for treating vasomotor symptoms. The 2024 landscape of available treatments has expanded yet again, arming the providers with an even wider range of possibilities to help their patients. Fezolinetant, is the first NK3R antagonist developed for the purpose of treating hot flashes in menopausal women. NK3R antagonists provide a safe and effective treatment option for managing menopausal women with VMS.

Hormone replacement therapy and risk of pancreatic cancer in postmenopausal women: Evidence from the US National Inpatient Sample 2008-2018.

Background: Pancreatic cancer is a serious, usually fatal disease and one of the most aggressive malignancies. Research into whether hormone replacement therapy (HRT) might protect against pancreatic cancer has yielded mixed results. This study aimed to investigate the potential association between HRT and the risk of pancreatic cancer in postmenopausal women. Methods: This population-based, retrospective study extracted data from the US National Inpatient Sample (NIS) 2008-2018. Hospitalized females aged ≥55 years were eligible for inclusion. Associations between HRT, other study variables, and pancreatic cancer diagnosis were determined using univariate and multivariable regression analyses. Results: After 1:4 matching by age, data of postmenopausal women with (n = 35,309) and without (n = 141,236) HRT were included in the analysis. The mean age was 73.4 years. Multivariable analyses showed that women with HRT had significantly decreased odds of pancreatic cancer (adjusted OR [aOR], 0.69, 95 % CI: 0.53-0.90). Compared to patients without HRT, patients with HRT in the 55-64-year-old group (aOR 0.48, 95 % CI: 0.32-0.74), 65-74-year-old group (aOR 0.49, 95 % CI: 0.34-0.71), non-hypertensive group (aOR 0.55, 95 % CI: 0.38-0.79), and non-hyperlipidemia group (aOR 0.59, 95 % CI: 0.42-0.82) had significantly decreased odds of pancreatic cancer. Conclusions: In US postmenopausal women, HRT is associated with a reduced risk of pancreatic cancer, especially those aged 55-74 year. Further study is needed to clarify the mechanisms underlying the associations.

Exploring nutrition-related interests of the transgender and gender-diverse community: a content analysis of a transgender-centric discussion forum on Reddit.

OBJECTIVE: The solicitation of nutrition-related health advice on social media platforms is on the rise. However, there is a paucity of research on the distinctive nutrition-related concerns and needs faced by transgender and gender-diverse individuals. Understanding patterns of nutrition-related information-seeking behaviour is vital to advancing health promotion efforts within this community. This study aimed to characterise the nutrition-related questions posed by the transgender community on a prominent social media outlet, Reddit. DESIGN: A qualitative, cross-sectional content analysis was conducted, focusing on the top 100 submissions (ranked by popularity) within a transgender-centric online subreddit (r/asktransgender). Data extraction was facilitated using the Application Programming Interface Pushshift. The content analysis was conducted using NVivo. SETTING: The study was situated within the discussion forum of the social media platform, Reddit. RESULTS: A total of 148 references from 90 eligible posts were identified and coded. The major themes included the effects of hormone replacement therapy (HRT) on nutritional health (n 66), weight status (n 45), dietary needs and behaviours (n 21), physical activity and weight loss on body shape (n 9), social undermining (n 4) and effects of health behaviours on HRT (n 3). CONCLUSION: This study underscores the pressing need for tailored and evidence-based nutrition guidelines and communication toolkits that specifically address the distinct needs and experiences of transgender individuals, particularly those undergoing HRT.

Ovarian tissue cryopreservation and transplantation as a natural means to delay menopause.

Ovarian tissue cryopreservation and transplantation (OTCT) offers hope for preserving fertility and endocrine functions in patients undergoing gonadotoxic treatments. Advancements in techniques for the procedure have transformed OTCT from an experimental procedure into a viable option. There is a growing interest in utilizing OTCT to delay menopause and alleviate associated health issues. Menopausal transition affects women globally, leading to symptoms and long- term health risks. OTCT has the potential to restore endocrine functions, reducing menopause-related symptoms while mitigating health consequences such as osteoporosis and cardiovascular diseases. Although the use of OTCT for delaying menopause is not clinically proven, the discussion around shows potential for future utilization. In essence, the remarkable advancements in OTCT have bestowed upon us the ability to safeguard fertility and sustain the delicate endocrine functions of the ovaries. However, it is the tantalizing prospect of utilizing this technique to postpone menopause and alleviate its associated symptoms that truly captivates the imagination. Further research is imperative to substantiate the clinical efficacy of OTCT; nonetheless, its potential in menopausal therapy is both promising and warrants comprehensive exploration. This review highlights advancements and the feasibility of OTCT to postpone menopause as an alternative approach to currently used conventional menopause therapy methods.

Effects, Doses, and Applicability of Gestrinone in Estrogen-Dependent Conditions and Post-Menopausal Women.

Gestrinone (R-2323), or ethylnorgestrienone, is a synthetic steroid of the 19-nortestosterone group more commonly used as an oral, intravaginal, or subcutaneous implant for the treatment of endometriosis, contraception, and estrogen-dependent conditions such as hypermenorrhea, premenstrual dysphoria, and intense menstrual cramps. This review aims to reevaluate the routes, doses, and applicability proposed for using gestrinone, including its use in new conditions such as menopause, lipedema, and sarcopenia. Here, we present the possible application of gestrinone as a long-acting therapeutic possibility through hormonal implants and the benefits and potential risks. Available evidence on the safety of doses and routes is limited. Gestrinone appears to be effective compared to other progestins and may have some advantages in the treatment of estrogen-dependent pathologies. Future research must evaluate gestrinone's long-term safety and potential therapeutic indications.

Progesterone-modified natural cycle preparation for frozen embryo transfer.

RESEARCH QUESTION: Is there any difference in clinical outcomes between the progesterone-modified natural cycle (P4mNC) and hormone replacement therapy (HRT) endometrial preparation protocols after single euploid blastocyst frozen embryo transfer (FET) cycles? DESIGN: A retrospective cohort study was performed at a single, private, high-volume fertility centre. Patients who underwent single euploid blastocyst FET between January 2017 and December 2019 were included. A total of 1933 FET cycles were reviewed, and 723 FET cycles from 548 patients met the inclusion criteria. Two groups were compared according to endometrial preparation: 327 P4mNC-FET and 396 HRT-FET cycles. The primary outcome was the live birth rate. The secondary outcomes included the clinical pregnancy rate and the miscarriage rate. RESULTS: There were no differences in the clinical pregnancy rate (50.2% versus 47.0%, P = 0.688), miscarriage rate (9.8% versus 14.5%, P = 0.115) and live birth rate (45.0% versus 39.6%, P = 0.331) between the P4mNC-FET and HRT-FET groups after covariate adjustments. CONCLUSIONS: There were no differences in the clinical outcomes between the P4mNC-FET and HRT-FET cycles. These results indicate that P4mNC-FET cycles produce clinical outcomes comparable to those of more traditional HRT-FET while allowing greater flexibility in the timing of embryo transfer.

Menopausal Hormone Therapy and Osteoarthritis Risk: Retrospective Population-Based Study in South Korea.

OBJECTIVES: This study aimed to investigate the risk of osteoarthritis associated with menopausal hormone therapy (MHT). METHODS: This population-based retrospective cohort study used a database of Korean health insurance claims (2007-2020). Females aged ≥ 40 who initiated menopause-related healthcare visits between 2011 and 2014 were identified. The MHT group comprised females aged ≥ 40 who initiated MHT for ≥ 6 months during this period. The non-MHT group comprised females aged ≥ 40 who attended menopause-related healthcare visits but did not receive MHT. To account for potential confounding factors, the two groups were matched at a 1:1 ratio using propensity score matching. RESULTS: A cohort of 453,040 postmenopausal females aged ≥ 40 years was identified, with 26,354 assigned to either the MHT or non-MHT group after propensity matching. The median age was 49 years, and the median follow-up was 8.2 years. The Cox proportional hazards model demonstrated an elevated risk of osteoarthritis with MHT (hazard ratio [HR], 1.154; 95% confidence interval [CI], 1.117-1.193) for knee (HR, 1.148; 95% CI, 1.102-1.195) and other arthritis (HR, 1.205; 95% CI, 1.151-1.261), although not statistically significant for hip arthritis. Tibolone (HR, 1.211; 95% CI, 1.161-1.263), estrogen-progestogen therapy (EPT) (HR, 1.092; 95% CI, 1.048-1.137), and estrogen therapy (ET) (HR, 1.235; 95% CI, 1.148-1.329) were associated with a higher risk of osteoarthritis compared to non-MHT users. CONCLUSIONS: MHT was associated with an increased risk of osteoarthritis, consistently observed across tibolone, EPT, and ET, particularly affecting joints other than the hip, with a trend toward an elevated risk of hip osteoarthritis.

Testosterone supplementation and stroke in young adults: a review of the literature.

Testosterone supplementation has increased in recent years for both treatment of hypogonadism and recreational use. Strokes in young adults have similarly increased with a larger proportion of patients in this age group having a stroke due to early onset of cardiovascular risk factors or unrelated to conventional risks. Hormonal treatments are associated with increased stroke risk amongst women, with some studies indicating an increase in stroke risk as high as 40% when compared to non-users. However, less is known about male sex hormones and risks associated with increased stroke. Limited data evaluates the relationship between testosterone supplementation and stroke in young adults. In this review, we analyze the literature and plausible underlying pathophysiological mechanisms associated with increased risks in patients using exogenous testosterone. Furthermore, we highlight the gaps in research about safety and long-term effects on young patients.

Is Early Menopause a Different Entity From Premature Ovarian Insufficiency?

Premature ovarian insufficiency (POI, defined as age at menopause < 40 years) affects 1%-3% of postmenopausal women. It is positively associated with an increased risk of diabetes mellitus, arterial hypertension, cardiovascular disease, osteoporosis, fractures, cognitive impairment, and depression. Early menopause (EM, defined as age at menopause < 45 years) is also associated with these adverse health consequences, in most cases to the same degree as in POI. Therefore, a unifying term for EM and POI, such as 'premature menopause', may be proposed, using the age threshold of < 45 years. This could provide broader coverage of these women, substantiating the need for prompt administration of menopausal hormone therapy (in this case, 'hormone replacement therapy'). However, the benefits of this approach, which precludes a higher oestrogen dose up to the normal age of menopause, need to be proven in well-designed randomized controlled trials.

Effect of transdermal testosterone therapy on mood and cognitive symptoms in peri- and postmenopausal women: a pilot study.

PURPOSE: The purpose of this study was to assess the impact of testosterone therapy on mood and cognitive symptoms in perimenopausal and postmenopausal women. METHODS: A retrospective cohort study undertaken in a UK specialist menopause clinic. 510 women using hormone replacement therapy (HRT) with persistent low libido, cognitive and negative mood symptoms were treated with testosterone cream or gel for 4 months. A modified version of the Greene Climacteric Scale was used to measure self-reported symptom frequency and severity at baseline and 4 months after initiating treatment. RESULTS: All nine cognitive and mood symptoms significantly improved across the study period. Mood improved more than cognition (47% of women reported an improvement in mood vs. 39% reported an improvement in cognition; 34% vs. 22% decrease in mean symptom scores, respectively). Regarding libido, 52% of women reported an improvement; mean symptom score decreased by 33%. CONCLUSION: Transdermal testosterone therapy for 4 months was associated with significant improvements in mood and cognition. Further research including randomised clinical trials are needed to establish the long-term efficacy and safety of testosterone for the treatment of menopausal cognitive and psychological symptoms.

Evaluating the impact of testosterone replacement therapy on carotid atherosclerosis: a systematic review and meta-analysis.

Aim: This meta-analysis investigates the association between testosterone replacement therapy [TRT] and carotid artery atherosclerosis. Methods: 3 databases were searched for studies up to June 2023 per the PRISMA guidelines. The eligibility criteria comprised RCTs and observational studies involving hypogonadal males receiving exogenous testosterone, in which CIMT was assessed. CAA was the primary outcome, whereas secondary outcomes included HDL, LDL, CRP, total cholesterol and total testosterone. The statistical analysis was performed using Review Manager. Results: Statistical analysis revealed no association between TRT and assessed outcomes. There was a significant increase in total testosterone levels, depicting indirect anti-atherosclerotic effects of TRT. Conclusion: Meta-analysis shows no relation between TRT and CIMT or other markers, allowing its safe usage for hypogonadal males.

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Thyroid Hormone Replacement Dosing after Bariatric Surgery in Patients with Primary Hypothyroidism And Severe Obesity: Tehran Obesity Treatment Study.

Background: Obesity and hypothyroidism are common medical conditions that are associated with each other. Bariatric surgery (BS) is a common approach used to achieve substantial weight loss in obese patients. However, there is limited evidence regarding the need for postsurgery levothyroxine (LT4) dose adjustment in patients with hypothyroidism undergoing BS. Methods: This was a three-year prospective cohort study assessing postsurgery LT4 requirements with attention to body composition changes. The current study included 1030 patients with hypothyroidism, who underwent sleeve gastrectomy (SG) (n = 707, 88.3% women) or one anastomosis gastric bypass (OAGB) (n = 323, 92% women). Patients were followed for 36 months after surgery. A bioelectrical impedance analyzer was used for body composition assessment. LT4 requirements were assessed by generalized estimating equation (GEE) methods adjusted for weight as a time-varying covariate. Results: During the follow-up, TSH (mIU/L) and T4 (ng/dL) measurements did not significantly change in the OAGB group over time. However, in the SG group, TSH measurement decreased over time (ptrend = <0.001). In the third year of the follow-up, 56.1% and 33.3% of patients in the SG and OAGB groups experienced LT4 (µg/day) dose reduction, while 24.4% and 9.1% of the participants experienced LT4 dose increments, respectively. GEE analysis showed a significant increase in the LT4/fat mass (FM) (µg/kg) ratio after 36 months of follow-up compared with the baseline in both the SG [1.8 (1.5-2.2) to 2.7 (2.0-3.5), ptrend = 0.039)] and OAGB [1.7 (1.4-2.2) to 3.2 (2.7-4.8), ptrend = <0.001)] groups. Moreover, patients who underwent OAGB experienced greater LT4/FM (µg/kg) dose adjustments compared to those undergoing SG (pbetween = 0.060). In both groups, after the first year, the increase in LT4/FM (µg/kg) plateaued (pinteraction = 0.009). Conclusion: Most hypothyroid patients experienced either a reduction or no change in LT4 (µg/day) dosage after 36 months in both surgical groups. The LT4/FM (µg/kg) was significantly increased in patients undergoing either SG or OAGB with greater alterations in the latter. Further studies on larger populations and with longer duration of follow-up are needed to confirm our results.

Bone mineral density: Comparison between women under hormone replacement therapy with Turner syndrome or idiopathic premature ovarian insufficiency.

CONTEXT: Turner syndrome (TS) is characterized by short stature and premature ovarian insufficiency (POI). The main long-term complication of POI is osteoporosis, which can be prevented by hormone replacement therapy (HRT). OBJECTIVE: The objective of our study was to compare initial bone mineral density (BMD) and progression between TS and idiopathic POI patients under HRT. METHODS: A single-center retrospective study was conducted between 1998 and 2018. All women had undergone at least two bone densitometry assessments at least 2 years apart. RESULTS: Sixty-eight TS patients and 67 idiopathic POI patients were included. Mean age at initial assessment was 27 years (IQR, 21-35.5 years) in TS patients and 31.5 years (IQR, 23-37 years) in idiopathic POI patients (P=0.1). Lumbar and femoral neck BMD were lower in the TS group than in the idiopathic POI group (respectively 0.89g/cm2 versus 0.95g/cm2, P=0.03; 0.70g/cm2 versus 0.77g/cm2, P<0.0001). Mosaic karyotype was associated with better BMD in TS patients while history of growth hormone treatment had no impact on BMD. Over time, a significant gain in vertebral BMD was observed in TS patients versus a loss of BMD in idiopathic POI patients (P=0.0009). CONCLUSION: TS patients had a lower BMD at baseline than idiopathic POI patients, at both spinal and femoral levels. Over time, on HRT, a significant gain in vertebral BMD was observed in patients with TS, compared with a loss of BMD in patients with idiopathic POI. We hypothesized that earlier initiation and longer duration of HRT played an important role in this finding. Long-term prospective follow-up to assess the incidence of fractures in TS would be useful.