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ObjectiveDespite the fact that some evidence suggests that the administration of 17β-estradiol plus norethisterone acetate influences glucose and insulin metabolism in women, these findings are still contradictory. Thus, we aimed to examine the impact of the co-administration of 17β-estradiol and norethisterone acetate on glycated haemoglobin (HbA1c), fasting glucose, insulin and C-peptide concentrations in females by means of a systematic review and meta-analysis of randomized controlled trials (RCTs).MethodsWe searched four databases (PubMed/MEDLINE, Scopus, Embase, and Web of Science) using specific keywords and word combinations. The random-effects model (DerSimonian and Laird model) was employed to compute the weighted mean difference (WMD) and 95% confidence intervals (CIs) for the variations from baseline of HbA1c, fasting glucose, insulin, and C-peptide concentrations.ResultsIn total, 14 RCTs were entered into the quantitative synthesis. The combined administration of 17β-estradiol and norethisterone acetate decreased HbA1c (WMD: -0.65%, 95% CI: -1.15 to -0.15; P=0.011), fasting glucose (WMD: -11.05 mg/dL, 95% CI: -16.6 to -5.5; P<0.001) and insulin (WMD: -1.35 mIU/L, 95% CI: -2.20 to -0.50; P=0.001) levels. C-peptide concentrations’ declined only in females diagnosed with overweight/obesity or diabetes.ConclusionEvidence to date points out that the administration of 17β-estradiol and norethisterone acetate has a positive impact on glucose metabolism in women by reducing fasting glucose, HbA1c, and insulin values. Future studies need to confirm the potential benefits of this drug combination in the prevention and/or management of cardiometabolic disorders.

Abstract licence: CC BY 4.0

PurposeUterine fibroids are the most common pelvic tumors in women, representing the primary indication of hysterectomy. Gonadotropin-releasing hormone (GnRH) antagonists represent a new therapeutic option for premenopausal women. The aim of this review is to evaluate the efficacy and safety of GnRH antagonists in the treatment of uterine fibroids (size reduction and symptom control).MethodsA review of studies from electronic databases (PubMed and Cochrane Central) published up to December 2023 was performed. Eleven randomized clinical trials with a total of 4164 patients were included in the review, which evaluated GnRH antagonists (Relugolix, Elagolix, Linzagolix and Cetrorelix) against placebo or GnRH agonists in premenopausal women with uterine fibroids and heavy menstrual bleeding.ResultsThe results of the measures evaluated to determine the efficacy and safety of GnRH antagonists versus placebo are favorable for the variables of control of uterine bleeding (Relative risk (RR) = 5.09; 95% CI 3.19 to 8.14), percentage reduction of fibroid volume (Mean difference (MD) = -27.36; 95% CI -38.89 to -15.83) and lower reduction of bone density (MD -0.35; 95% CI -0.47 to -0.24). The results do not allow us to conclude whether there are differences between the alternatives compared in the control of vasomotor symptoms.ConclusionsGnRH antagonists represent an effective alternative for uterine fibroids treatment as they allow a superior reduction in menstrual bleeding and uterine fibroid volume compared to the placebo group.

Abstract licence: CC BY-NC-ND

Abstract Background Relugolix, an oral GnRH receptor antagonist, is effective in treating uterine myomas and endometriosis. However, concerns persist regarding the venous thromboembolism (VTE) risk associated with its combination with oral estradiol (E2) and norethisterone acetate (NETA). Objective This expert opinion evaluates the thrombotic risk of relugolix combined therapy (relugolix-CT) based on pharmacological data, clinical trials, and regulatory assessments. Methods A review of pivotal trials (LIBERTY 1, LIBERTY 2, SPIRIT 1, SPIRIT 2), regulatory reports (European Medicines Agency, Food and Drug Administration), and real-world safety data was conducted, focusing on hemostatic effects and VTE risk. Results Relugolix monotherapy reduces estrogen levels, leading to minor decreases in coagulation factors. While E2 and NETA mitigate hypoestrogenic effects, concerns about their prothrombotic potential remain. However, clinical trials and postmarketing surveillance have not shown a significant increase in VTE risk. A meta-analysis suggests that E2-based regimens have a lower thrombotic risk than ethinylestradiol-based therapies. Conclusion The VTE risk of relugolix-CT appears lower than that of traditional combined oral contraceptives. Nonetheless, patient selection is essential, particularly for those with thrombotic risk factors. Continued real-world surveillance is crucial to refining its safety profile in clinical practice.

Abstract licence: CC BY-NC-ND 4.0

Purpose of reviewWhile laparoscopic surgery plays a key role in the management of endometriosis, symptoms commonly recur, and repeat surgery comes with increased risk. Medical management, including hormonal and nonhormonal treatment, is vital in managing painful symptoms. This review summarizes recent evidence regarding various medical management options available to treat pelvic pain associated with endometriosis.Recent findingsEfficacy of dienogest vs. combined oral contraceptive on pain associated with endometriosis: randomized clinical trial.Once daily oral relugolix combination therapy vs. placebo in patients with endometriosis-associated pain: two replicate phase 3, randomised, double-blind, studies (SPIRIT 1 and 2).A randomized, double-blind, placebo-controlled pilot study of the comparative effects of dienogest and the combined oral contraceptive pill in women with endometriosis.Two-year efficacy and safety of relugolix combination therapy in women with endometriosis-associated pain: SPIRIT open-label extension study.SummaryAll symptomatic women with suspected endometriosis who are not desiring immediate fertility can be offered suppressive treatment to control symptoms and slow the progression of disease. First-line treatments include the combined oral contraceptive pill and progestogens. Second-line treatments include gonadotropin-releasing hormone agonists and antagonists but current guidelines recommend that these should be reserved for people whose symptoms fail to be controlled by first-line agents. The use of complementary and alternative medicines is also increasing in both volume and number of agents used.

Abstract licence: CC BY

BackgroundSymptomatic uterine fibroids are burdensome to live with; they are associated with symptom-related distress, affect daily activities, and reduce health-related quality of life. The LIBERTY randomized clinical trials showed that oral relugolix combination therapy (40 mg relugolix, 1 mg estradiol, and 0.5 mg norethindrone acetate once daily) markedly improved fibroid-associated symptoms and conditions, including heavy menstrual bleeding, pain, and anemia, and was well-tolerated.ObjectiveThis study aimed to evaluate the effect of relugolix combination therapy on the symptom burden and health-related quality of life among women with uterine fibroids.Study designTwo replicate, multinational, double-blind, 24-week, randomized, placebo-controlled, phase 3 studies, LIBERTY 1 and LIBERTY 2, were conducted in premenopausal women with uterine fibroid-associated heavy menstrual bleeding (≥80 mL per cycle for 2 cycles or ≥160 mL during 1 cycle). The symptom burden and health-related quality of life were secondary endpoints and were assessed using the validated Uterine Fibroid Symptom and Quality of Life questionnaire, which the participants completed at baseline and at week 12 and 24 of treatment. For this secondary analysis, the pooled LIBERTY 1 and LIBERTY 2 data set was used. The Uterine Fibroid Symptom and Quality of Life questionnaire is made up of a Symptom Severity scale and a Health-Related Quality of Life scale, the latter of which includes 6 subscales focusing on the following aspects of daily life: concern, activities, energy or mood, control, self-consciousness, and sexual function. The Revised Activities subscale of the Health-Related Quality of Life scale addresses the impact of uterine fibroids on physical and social activities. Symptom burden was also assessed via the Bleeding and Pelvic Discomfort subscale, a patient-reported outcome measure derived from the Uterine Fibroid Symptom Severity scale that focuses on distress from key uterine fibroid symptoms, which was a key secondary endpoint. Least squares mean changes from baseline to week 24 in the Symptom Severity scale, Bleeding and Pelvic Discomfort subscale, overall Health-Related Quality of Life scale, and the respective subscales were compared between the relugolix combination therapy and placebo groups. Responder analyses of the proportion of women who experienced a clinically meaningful change from baseline to week 24 were conducted for the Bleeding and Pelvic Discomfort and the activity subscales. A stratified Cochran-Mantel-Haenszel test, adjusted for stratification factors (region [North America vs rest of world] and baseline menstrual blood loss volume), was used for treatment comparisons.ResultsAcross both trials, 509 women were randomized to the relugolix combination therapy or placebo groups (April 2017-December 2018). Participants on relugolix combination therapy showed a statistically significant reduction in symptom severity (-33.5 vs -12.1; nominal PConclusionAfter 24 weeks of treatment with relugolix combination therapy, women with symptomatic uterine fibroids experienced substantial improvements in health-related quality of life with all subscales showing improvement, including emotional well-being, physical and social activities, and sexual function. In addition, women reported substantial reductions in the overall symptom burden and distress caused by key fibroid-associated symptoms.

Abstract licence: CC BY-NC-ND