Dataset Information

Estradiol and progesterone bioavailability for moderate to severe vasomotor symptom treatment and endometrial protection with the continuous-combined regimen of TX-001HR (oral estradiol and progesterone capsules).

ABSTRACT: OBJECTIVE:In the REPLENISH trial, women receiving TX-001HR-an oral, softgel capsule, combining 17?-estradiol (E2) and progesterone (E2 mg/P4 mg 1/100, 0.5/100), had significantly improved vasomotor symptoms, while having their endometrium protected from hyperplasia. The objective here was to describe P4 levels sufficient to counteract the potential endometrial effects of 1 or 0.5?mg oral E2 with TX-001HR. METHODS:In REPLENISH (phase 3; NCT01942668), serum P4, E2, and estrone (E1) levels were characterized in postmenopausal women treated with TX-001HR (E2 mg/P4 mg: 1/100, 0.5/100, [0.5/50, 0.25/50 and placebo not reported here]) at baseline, week 12, and month 12 for P4, and at baseline, weeks 4 and 12, and months 6, 9, and 12 for E2 and E1. In a phase 1 study, pharmacokinetic parameters were assessed after 7 daily doses of oral E2 mg/P4 mg (1/100 and 0.5/100). RESULTS:In REPLENISH (n?=?1,835), mean P4 levels were 0.39 to 0.55?ng/mL with 100-mg P4 doses; E2 levels were 42.3 to 45.6?pg/mL and 23.0 to 27.4?pg/mL for the 1-mg and 0.5-mg E2 doses, respectively; E1 levels were 214 to 242?pg/mL and 114 to 129?pg/mL for the 1-mg and 0.5-mg E2 doses. In the phase 1 study (n?=?40; day 7), mean Cavg for P4 was 0.66?ng/mL with 100-mg P4 doses; E2 was 38.1?pg/mL and 29.2?pg/mL for 1?mg and 0.5?mg E2, respectively; and E1 was 211 and 106?pg/mL for 1?mg and 0.5?mg E2. All three analytes reached steady state within 7 days; accumulation ratios were 1.36 to 1.94. CONCLUSIONS:P4 levels observed with TX-001HR were similar in the phase 1 and 3 studies, and were associated with no endometrial hyperplasia with either E2 daily dose over 1 year in the REPLENISH phase 3 study, which showed significant improvements in menopausal vasomotor symptoms.

SUBMITTER: Lobo RA

PROVIDER: S-EPMC6636803 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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Estradiol and progesterone bioavailability for moderate to severe vasomotor symptom treatment and endometrial protection with the continuous-combined regimen of TX-001HR (oral estradiol and progesterone capsules).

Lobo Rogerio A RA Liu James J Stanczyk Frank Z FZ Constantine Ginger D GD Pickar James H JH Shadiack Annette M AM Bernick Brian B Mirkin Sebastian S

Menopause (New York, N.Y.) 20190701 7

<h4>Objective</h4>In the REPLENISH trial, women receiving TX-001HR-an oral, softgel capsule, combining 17β-estradiol (E2) and progesterone (E2 mg/P4 mg 1/100, 0.5/100), had significantly improved vasomotor symptoms, while having their endometrium protected from hyperplasia. The objective here was to describe P4 levels sufficient to counteract the potential endometrial effects of 1 or 0.5 mg oral E2 with TX-001HR.<h4>Methods</h4>In REPLENISH (phase 3; NCT01942668), serum P4, E2, and estrone (E1) ...[more]

PMID: 30694918

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Project description:Abstract Vaginal bleeding associated with hormone therapy (HT) is the most common reason for treatment discontinuation. Cumulative amenorrhea rates (no bleeding or spotting for 13 cycles) ranging from 23% to 49% with current HT options1-3 are relatively lower than the 56% to 73% observed in the REPLENISH trial.4 The REPLENISH trial (NCT01942668) was a 12-month, phase 3, randomized, double-blind, placebo-controlled, multicenter trial that evaluated TX-001HR (bioidentical 17β-estradiol and progesterone [E2/P4] combined in a single, oral softgel capsule; 1 mg E2/100 mg P4 FDA approved as BIJUVATM; TherapeuticsMD, Boca Raton, FL) vs placebo in 1835 menopausal women (40−65 y; intact uterus) for the treatment of menopausal, moderate to severe vasomotor symptoms (VMS). Overall, the proportion of women with no bleeding was high (74%-90%) with up to 1 year of TX-001HR. The objective of this analysis was to determine predictors of vaginal bleeding. Univariate analyses were used to assess the impact of age, race, BMI, smoking, time since last menstrual period (LMP), age at LMP, tubal ligation, parity, baseline E2 concentration, and baseline frequency and severity of VMS (mild=1 to severe=3) on the incidence of vaginal bleeding at any time during the study (cumulative incidence at cycle 13) and for bleeding that occurred in the first 3 months of the study (cumulative incidence at cycle 3). Predictors of vaginal bleeding with HT (at cycle 13) were age, time since LMP, E2 concentration, and severity of VMS. The likelihood of bleeding was reduced by 42% for every 5-year increase in age (P<0.0001) and by 39% for every 5-year increase in the time since LMP (P<0.0001). Incidence of bleeding significantly decreased by 54% with baseline E2 levels <10 pg/mL (P=0.0001), 59% with E2 levels <5 pg/mL (P<0.0001), and 47% for E2 levels 5 to <10 pg/mL (P=0.0040), when compared with E2 levels ≥10 pg/mL. There was 33% less bleeding reported for women with less severe VMS (<2.5 points). No statistically significant differences in reports of bleeding were noted for race, BMI, smoking, age at LMP, tubal ligation, parity, or baseline frequency of moderate to severe VMS. Similar predictors were noted for bleeding at cycle 3, except for baseline VMS severity, which was no longer a significant predictor. Cumulative amenorrhea was relatively high in TX-001HR users. Vaginal bleeding in women treated with TX-001HR increased in women who were younger, experienced their LMP more recently, and had higher baseline E2 concentrations. Even though the rate/amount of bleeding was relatively low overall,4 these data may help clinicians inform women who may be more likely to experience vaginal bleeding while taking combined E2/P4 for menopausal symptoms. 1. Prempro tablets PI. Wyeth Pharmaceuticals. 2. Activella tablets PI. Novo Nordisk FemCare AG. 3. Angeliq Tablets PI. Berlex. 4. Lobo RA, et al. Obstet Gynecol. 2018;132:161-170.

Project description:ObjectiveThe aim of the study was to evaluate the effect of a single-capsule 17β-estradiol/progesterone (E2/P4), TX-001HR, on endometrial safety, to report on amenorrhea and bleeding patterns of users, and to identify predictors of amenorrhea.MethodsThe REPLENISH trial (NCT01942668) evaluated use of TX-001HR in menopausal women (40-65 y) with vasomotor symptoms (VMS) and a uterus. Women were randomized to daily E2/P4 (mg/mg: 1/100, 0.5/100, 0.5/50, or 0.25/50), or placebo for 12 months. Incidence rate of endometrial hyperplasia was calculated from endometrial biopsies conducted at screening and study completion. Women reported bleeding and spotting in daily diaries. The number of bleeding and/or spotting days and the proportion of women with no bleeding or amenorrhea were compared between treatment and placebo using the Fisher exact test. Predictors of cumulative amenorrhea were assessed by univariate analyses.ResultsWomen (n = 1,835) who took at least one study dose comprised the safety population; 1,255 had baseline and 12-month biopsies and comprised the endometrial safety population. Incidence of endometrial hyperplasia was ≤0.36% with any dose of TX-001HR after 1 year of use (one-sided upper 95% confidence interval ≤4%). Cumulative amenorrhea (no bleeding/spotting) rates increased over time and were relatively high from cycle 1 to 13 with TX-001HR (56%-73%; placebo 79%; P < 0.05 except with 0.25/50 dose). Few vaginal bleeding adverse events (1.0%-4.6% TX-001HR vs 0.7% placebo) were reported and discontinuations due to bleeding were low (0.4%-1.4% vs 0%). Cumulative amenorrhea was significantly more frequent in older women, those further from their last menstrual period, and those with lower baseline E2 concentrations (all; P < 0.01).ConclusionsAll doses of TX-001HR provided endometrial protection and were associated with an improved bleeding profile over time; older age, further last menstrual period, or lower baseline E2 may predict amenorrhea with TX-001HR.

Project description:Abstract Difficulty sleeping is a common complaint of postmenopausal women. In the REPLENISH trial, the oral 17β-estradiol/progesterone (E2/P4) softgel capsule (TX-001HR; 1 mg E2/100 mg P4 FDA approved as BIJUVATM; TherapeuticsMD, Boca Raton, FL), was shown to reduce moderate to severe hot flush frequency and severity and improve quality of life outcomes in menopausal women with a uterus, while protecting the endometrium. In this analysis, the effect of the E2/P4 capsules on “difficulty sleeping” in postmenopausal women experiencing hot flushes, was assessed by the menopause-specific quality of life (MENQOL) questionnaire and also analyzed by age. The phase 3 REPLENISH trial (NCT01942668), evaluated 4 daily doses of E2/P4 capsules in postmenopausal women (40-65 years, intact uterus) with vasomotor symptoms (VMS). Women with moderate to severe hot flushes (≥7/day or ≥50/week) were randomized to E2/P4 (mg/mg) 1/100, 0.5/100, 0.5/50, 0.25/50, or placebo (VMS substudy); women with fewer/less severe VMS were randomized to active E2/P4 doses only for endometrial safety. MENQOL was administered at baseline, week 12, and months 6 and 12. The “difficulty sleeping” item was rated using a 7-item Likert scale ranging from “Not at all bothered” (analysis score of 2) to “Extremely bothered” (analysis score of 8) if difficulty sleeping was experienced, if not experienced, the score for the analysis was set to 1. Changes from baseline to week 12, and months 6 and 12 in all women (MITT population) were analyzed by ANCOVA between each E2/P4 groups vs placebo and stratified by age (pre-specified FDA subgroup; <55 and 55+). Treatment groups in the MITT population (n=1833) were E2/P4 1/100 (n=416), 0.5/100 (n=422), 0.5/50 (n=421), 0.25/50 (n=423) or placebo (n=151). The MITT population had a mean age of 55 years; in the <55-year group (n=927) mean age was 51.2 years and in the ≥55-year group (n=906) mean age was 58.1 years. Mean baseline scores for the “difficulty sleeping” item ranged from 5.1 to 5.8 points. In the MITT population, difficulty sleeping significantly improved from baseline with the three highest E2/P4 doses (1/100, 0.5/100, 0.5/50) compared with placebo at all timepoints (all, P<0.05), except for 0.5/50 at month 6. In women <55 years, the sleep difficulty item significantly improved from baseline at all timepoints with two E2/P4 doses (1/100 and 0.5/50) vs placebo. In women 55+ years, significant improvements from baseline were observed at week 12 with three E2/P4 doses (1/100, 0.5/100, 0.5/50) vs placebo. In REPLENISH, women treated with E2/P4 capsules containing 1 or 0.5 mg E2 demonstrated significant and sustained improvements in the MENQOL difficulty sleeping assessment, especially those <55 years. These data warrant further evaluation.

Dataset Information

Estradiol and progesterone bioavailability for moderate to severe vasomotor symptom treatment and endometrial protection with the continuous-combined regimen of TX-001HR (oral estradiol and progesterone capsules).

Publications

Estradiol and progesterone bioavailability for moderate to severe vasomotor symptom treatment and endometrial protection with the continuous-combined regimen of TX-001HR (oral estradiol and progesterone capsules).

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