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Safety and Efficacy of Telapristone Acetate (Proellex®) in the Treatment of Pre-Menopausal Women With Confirmed, Symptomatic Endometriosis

A Phase 2, Multi-Center, Three-Arm, Parallel Design, Randomized, Double-Blind Study to Evaluate the Safety and Efficacy of 6 and 12 mg Proellex® (Telapristone Acetate) Administered Orally in the Treatment of Premenopausal Women With Confirmed Symptomatic Endometriosis

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01728454
Enrollment
60
Registered
2012-11-19
Start date
2013-05-02
Completion date
2017-03-15
Last updated
2019-07-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Endometriosis

Brief summary

The primary purpose of this study is to determine the safety and efficacy of two oral doses of telapristone acetate administered to premenopausal women with pelvic pain associated with endometriosis confirmed within the last seven years and using prescription analgesics for symptomatic pain.

Detailed description

This study is a phase 2, 3-arm-study with an 18-week active dosing period and an option for participants to receive 2 additional 16-week cycles of active treatment at their randomized dose \[6 mg or 12 mg/day\]. Placebo participants who elect additional treatment will receive treatment at 12 mg/day. The treatment dose will remain double-blind. The study will be conducted in 3 stages. The first stage is a no treatment baseline assessment period. This stage will last as long as it takes to record at least one full menstrual cycle (ovulation until ovulation). For stage 2, following the run-in stage, at Visit 3, 60 participants will be randomized into one of 3 arms in a 1-1-1 fashion. The start of dosing should commence as soon as possible after ovulation following the end of the previous menstrual event. For stage 3, participants who are eligible to receive additional cycles of treatment and who elect to continue treatment will be scheduled within a week before the second expected menses (+/- 2 days), following the off-drug interval. Participants will receive 2 cycles of treatment separated by an off-drug interval (ODI), after which they will be followed until menses has returned.

Interventions

DRUGPlacebo

Placebo matching capsules, orally, once daily for 18 weeks.

Telapristone acetate capsules, orally once daily for 18 weeks.

Sponsors

Repros Therapeutics Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 47 Years
Healthy volunteers
No

Inclusion criteria

* Adult females between 18 and 47 years of age using prescription analgesics for endometriosis pain and with a Biberoglu Behrman Symptom Severity Scale (BBSS) score ≥7 at screening (assessed over the previous 28 days). * Endometriosis diagnosis must have been surgically confirmed within 7 years. A laparoscopic diagnosis is acceptable. * Participants must have a history of at least 3 regular menstrual cycles in which symptoms of endometriosis occurred immediately prior to screening. * Normal or abnormal but non-clinically significant transvaginal ultrasound. * History of menstrual events occurring in regular cycles. * Agreement not to attempt to become pregnant during the trial. * Agreement to limit alcohol consumption to no more than 2 drinks per week and to avoid alcohol consumption within 48 hours before each visit. * Ability to complete a daily electronic participant diary and study procedures in compliance with the protocol. * Women of child-bearing potential must be willing to use double-barrier contraception during the study and for 30 days after discontinuation of study medication. Acceptable double-barrier methods are: male condom with spermicide; male condom with diaphragm; diaphragm containing spermicide plus additional intra-vaginal spermicide. * Has a negative pregnancy test at the Screening and Baseline visits, and subsequent study visits. * A Body Mass Index (BMI) between 18 and 39 inclusive. * Is available for all treatment and follow-up visits.

Exclusion criteria

* Post-menopausal woman, defined as either; six (6) months or more (immediately prior to screening visit) without a menstrual period, or prior hysterectomy and/or oophorectomy. * Pregnant or lactating or is attempting or expecting to become pregnant during the 6-7 month study period. * Women with abnormally high liver enzymes or liver disease \[alanine transaminase (ALT) or aspartate aminotransferase (AST) exceeding 2 x upper limit of normal (ULN) and total bilirubin exceeding 1.5 x ULN at screening and confirmed on repeat\]. * Received an investigational drug in the 30 days prior to the screening for this study. * History of polycystic ovary syndrome (PCOS). * Concurrent use of any testosterone, androgen, anabolic steroids, dehydroepiandrosterone (DHEA) or hormonal products for at least 2 weeks prior to screening and during the study. Oral contraceptive use for control of endometriosis symptoms is acceptable for the first 28-days of the study. * Use of Depo-Provera® in the preceding 6 months. * Use of Gonadotrophin releasing hormone (GnRH) as (e.g. Lupron Depot) within 3 months of the first dose of study drug (Lupron Depot must have a wash-out period of 3 months after the period of duration of the Lupron dose). * Has an intrauterine device (IUD) in place. Copper IUDs (non-hormone containing will be permitted). * Presence of intramural fibroids that impact the endometrial stripe, submucosal fibroids (any size), or endometrial polyps. Subserosal and intramural fibroids with no impact on the endometrial stripe are acceptable. * Presence of endometrioma(s). * Present history or condition that causes non-endometriosis related dyspareunia (e.g. vulvar vestibulitis). * Past or present history of thrombophlebitis or thromboembolic disorders. * Known or suspected carcinoma of the breast or reproductive organs. * History of abnormal electrocardiogram (ECG) that, in the opinion of the investigator, is clinically significant and will prevent the participant from completing the study, including a QTc (corrected QT interval) of greater than 450 milliseconds (ms). * Cervical dysplasia classified as Atypical Squamous Cells of Undetermined Significance (ASCUS) associated with high-risk human papilloma virus (HPV) or Low/High Grade Squamous Intraepithelial Lesion (LGSIL or HGSIL). * History of abnormal endometrial biopsy including the presence of Endometrial Intraepithelial Neoplasia (EIN). * Recent history (within past 6 months) of alcoholism or drug abuse. * Known active infection with Human Immunodeficiency Virus (HIV), Hepatitis A, B or C. * Previous history of auto-immune disease and/or positive antinuclear antigen (ANA). * Endometrial stripe ≥18 mm in thickness at Visit 1. * Women currently taking cimetidine or spironolactone. * Clinically significant abnormal findings on screening examination and laboratory assessments or any condition which in the opinion of the investigator would interfere with the participant's ability to comply with the study instructions or endanger the participant if she took part in the study.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Individual Biberoglu Behrman Symptom Severity Scale (BBSS) Score for DysmenorrheaBaseline (28-day Baseline Menstrual Cycle) to the last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks) and at the end of Off-drug Cycle 1 (Off-drug Cycle 1 is 3 weeks following On-drug Cycle 1)The BBSS scale defined dysmenorrhea according to the loss of work efficiency and need for bed rest. The dysmenorrhea was graded on a scale from 0 to 3 where, 0 = None; 1 = Mild (some loss in work efficiency); 2 = Moderate (in bed part of the day, occasional loss of work efficiency); 3 = Severe (in bed one or more days, incapacitation), with higher scores indicating more severe symptoms. Participants were provided with a daily diary to record information about participant-reported scores for endometriosis pain each day. Daily scores were standardized to a 28-day period for each interval (Baseline, On-drug Cycle 1 and Off-drug Cycle 1) calculated as the sum of scores in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement.
Change From Baseline in Individual BBSS Score for DyspareuniaBaseline (28-day Baseline Menstrual Cycle) to the last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks) and at the end of Off-drug Cycle 1 (Off-drug Cycle 1 is 3 weeks following On-drug Cycle 1)The BBSS scale defined deep dyspareunia according to the limitation of sexual activity. The dyspareunia was graded on a scale from 0 to 3 where, 0= None (no discomfort); 1= Mild (tolerated discomfort); 2= Moderate (intercourse painful to the point of interruption); 3= Severe (intercourse avoided because of pain), with higher scores indicating more severe symptoms. Participants were provided with a daily diary to record information about participant-reported scores for endometriosis pain each day. Daily scores were standardized to a 28-day period for each interval (Baseline, On-drug Cycle 1 and Off-drug Cycle 1) calculated as the sum of scores in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement..
Change From Baseline in Individual BBSS Score for Non-Menstrual Pelvic PainBaseline (28-day Baseline Menstrual Cycle) to the last day dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks) and to the end of Off-drug Cycle 1 (Off-drug Cycle 1 is 3 weeks following On-drug Cycle 1)The BBSS scale defined non-menstrual pelvic pain according to various degrees of discomfort and use of analgesics. The non-menstrual pelvic pain was graded on a scale from 0 to 3 where, 0= None (absence of pain); 1= Mild (occasional pelvic discomfort); 2= Moderate (noticeable discomfort for most of the cycle); 3= Severe (pain persisting during the cycle or requiring strong analgesics), with higher scores indicating more severe symptoms. Participants were provided with a daily diary to record information about participant-reported scores for endometriosis pain each day. Daily scores were standardized to a 28-day period for each interval (Baseline, On-drug Cycle 1 and Off-drug Cycle 1) calculated as the sum of scores in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement.

Secondary

MeasureTime frameDescription
Percentage Change From Baseline in Non-Prescription Analgesics UsageBaseline (28-day Baseline Menstrual Cycle) to last 28 days of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks)An analgesic was any member of the group of drugs used to achieve analgesia, relief from pain. Nonprescription analgesics are OTC analgesics. Participants were provided with a daily diary to record the number of pills of over the counter drugs taken for endometriosis-related pain symptoms each day. Daily number of pills were standardized to a 28-day period for each interval (Baseline and last 28-days On-drug Cycle 1) calculated as the sum of pills in the interval divided by the number of the days in the interval multiplied by 28. The percent change from baseline in the analgesic usage was determined by subtracting the baseline analgesic usage from the analgesic usage during the last nominal 28 day menstrual cycle, divided by the baseline analgesic usage, and multiplied by 100%. A negative percent change indicates improvement.
Change From Baseline in Total Analgesics UsageBaseline (28-day Baseline Menstrual Cycle) to last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks)An analgesic was any member of the group of drugs used to achieve analgesia, relief from pain. The total analgesics is comprised of prescription and non-prescription analgesics. Participants were provided with a daily diary to record the number of pills of OTC and prescription analgesics taken for endometriosis-related pain symptoms each day. The daily number of pills were standardized to a 28-day period for each interval (Baseline and On-drug Cycle 1) calculated as the sum of pills in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement.
Percentage Change From Baseline in Total Analgesics UsageBaseline (28-day Baseline Menstrual Cycle) to last 28 days of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks)An analgesic was any member of the group of drugs used to achieve analgesia, relief from pain. The total analgesics is comprised of prescription and non-prescription analgesics. Participants were provided with a daily diary to record the number of pills of OTC and prescription analgesics taken for endometriosis-related pain symptoms each day. Daily number of pills were standardized to a 28-day period for each interval (Baseline and last 28-days On-drug Cycle 1) calculated as the sum of pills in the interval divided by the number of the days in the interval multiplied by 28. The percent change from baseline in the analgesic usage was determined by subtracting the baseline analgesic usage from the analgesic usage during the last nominal 28-day menstrual cycle, divided by the baseline analgesic usage, and multiplied by 100%. A negative percent change indicates improvement.
Change From Baseline in Prescription Analgesics UsageBaseline (28-day Baseline Menstrual Cycle) to the last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks)An analgesic was any member of the group of drugs used to achieve analgesia, relief from pain. Prescription analgesics are analgesics prescribed by the physician. Participants were provided with a daily diary to record the number of pills of non-narcotic prescription and narcotic analgesics taken for endometriosis-related pain symptoms each day. Daily number of pills were standardized to a 28-day period for each interval (Baseline and On-drug Cycle 1) calculated as the sum of pills in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement.
Change From Baseline in Participant-Reported Pain Using Visual Analog Scale (VAS) Pain ScoreBaseline (Day 1) to last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks) and at the end of Off-drug Cycle 1 (Off-drug Cycle 1 is 3 weeks following On-drug Cycle 1)A 100-millimeter (mm) VAS was used to grade the severity of dysmenorrhea, and non-menstrual pelvic pain. The lowest value indicated the absence of pain and the highest value indicated pain as bad as it could be; a score of 1-50 was considered mild pain, 51-80 moderate pain and 81-100 severe pain. A negative change from Baseline indicates improvement. Participants were provided with a daily diary to record information about participant-reported scores for endometriosis pain.
Change From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)Baseline (28-day Baseline Menstrual Cycle) to the last day dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks) and to the end of Off-drug Cycle 1 (Off-drug Cycle 1 is 3 weeks following On-drug Cycle 1)NRS is a valid and reliable clinical measure to assess pain intensity. Sex Avoidance Pain (SAP) and Endometriosis Pain (EP) were assessed using NRS-11 to measure pain based on pain ratings given by participants on the scale of 0 to 10 where, 0 represents no pain and 10 represents the worst pain possible. Participants were provided with a daily diary to record information about participant-reported scores for endometriosis pain each day. Daily scores were standardized to a 28-day period for each interval (Baseline, On-drug Cycle 1 and Off-drug Cycle 1) calculated as the sum of scores in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement.
Change From Baseline in BBSS Physician-Reported ScoresBaseline (Day 1) to last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks) and at the end of Off-drug Cycle 1 (Off-drug Cycle 1 is 3 weeks following On-drug Cycle 1)BBSS Physician-Reported Scores included two scores: Pelvic Tenderness Score (PTS) and Induration Score (IS). PTS was graded on a scale from 0 to 3 where, 0= None; 1= Mild (minimal tenderness on palpation); 2= Moderate (extensive tenderness on palpation); 3= Severe (unable to palpate because of tenderness). IS was graded on a scale from 0 to 3 where, 0= None; 1= Mild (uterus freely mobile, induration on the cul-de-sac); 2= Moderate (thickened and indurated adnexa and cul-de-sac, restricted uterine mobility); 3= Severe (nodular adnexa and cul-de-sac, uterus frequently frozen), with higher scores indicating more severe symptoms. A negative change from Baseline indicates improvement. Data from On-drug cycle and Off-drug interval (ODI) were reported.
Percentage Change From Baseline in Prescription Analgesics UsageBaseline (28-day Baseline Menstrual Cycle) to last 28 days of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks)An analgesic was any member of the group of drugs used to achieve analgesia, relief from pain. Prescription analgesics are analgesics prescribed by the physician. Participants were provided with a daily diary to record the number of pills of non-narcotic prescription and narcotic analgesics taken for endometriosis-related pain symptoms each day. Daily number of pills were standardized to a 28-day period for each interval (Baseline and last 28-days On-drug Cycle 1) calculated as the sum of pills in the interval divided by the number of the days in the interval multiplied by 28.The percent change from baseline in the analgesic usage was determined by subtracting the baseline analgesic usage from the analgesic usage during the last nominal 28 day menstrual cycle, divided by the baseline analgesic usage, and multiplied by 100%. A negative percent change from Baseline indicates improvement.
Change From Baseline in Non-Prescription Analgesics UsageBaseline (28-day Baseline Menstrual Cycle) to last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks)An analgesic was any member of the group of drugs used to achieve analgesia, relief from pain. Nonprescription analgesics are over-the-counter (OTC) analgesics. Participants were provided with a daily diary to record the number of pills of OTC drugs taken for endometriosis-related pain symptoms each day. Daily number of pills were standardized to a 28-day period for each interval (Baseline and On-drug Cycle 1) calculated as the sum of pills in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement.

Countries

United States

Participant flow

Participants by arm

ArmCount
Placebo
Following the Stage 1 no treatment baseline assessment period, placebo matching capsules, orally, once daily for 18 weeks in Stage 2. Eligible participants had the option to receive 2 additional 16-week cycles of active treatment at 12 mg/day separated by an off-drug interval (ODI) in Stage 3.
17
Telapristone Acetate 6 mg
Following the Stage 1 no treatment baseline assessment period, telapristone acetate (Proellex®) 6 mg capsules, orally once daily for 18 weeks in Stage 2. Eligible participants had the option to receive 2 additional 16-week cycles of active treatment at 6 mg/day separated by an ODI in Stage 3.
20
Telapristone Acetate 12 mg
Following the Stage 1 no treatment baseline assessment period, telapristone acetate (Proellex®) 12 mg capsules, orally once daily for 18 weeks. Eligible participants had the option to receive 2 additional 16-week cycles of active treatment at 12 mg/day separated by an ODI in Stage 3.
23
Total60

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Stage 1 and 2Lost to Follow-up110
Stage 1 and 2Moved to Active Drug/ Lack of Efficacy100
Stage 1 and 2Non-compliance with Protocol001
Stage 1 and 2Pregnancy100
Stage 1 and 2Withdrew due to Adverse Events/Toxicity233
Stage 3Lost to Follow-up031
Stage 3Non-compliance with Protocol001
Stage 3Pregnancy100
Stage 3Reason Missing001
Stage 3Subject Required Other Treatment010
Stage 3Withdrew Consent101
Stage 3Withdrew due to Adverse Events/Toxicity100

Baseline characteristics

CharacteristicPlaceboTelapristone Acetate 6 mgTelapristone Acetate 12 mgTotal
Age, Continuous28.3 years
STANDARD_DEVIATION 6.52
30.8 years
STANDARD_DEVIATION 5.93
30.1 years
STANDARD_DEVIATION 7.07
29.8 years
STANDARD_DEVIATION 6.52
Race/Ethnicity, Customized
Black or African American
2 Participants6 Participants4 Participants12 Participants
Race/Ethnicity, Customized
Hispanic or Latino
5 Participants4 Participants5 Participants14 Participants
Race/Ethnicity, Customized
Non-Hispanic or Non-Latino
12 Participants16 Participants18 Participants46 Participants
Race/Ethnicity, Customized
Other
0 Participants0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
White
15 Participants14 Participants18 Participants47 Participants
Sex: Female, Male
Female
17 Participants20 Participants23 Participants60 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
deaths
Total, all-cause mortality
0 / 170 / 200 / 230 / 60 / 50 / 11
other
Total, other adverse events
14 / 1717 / 2018 / 234 / 65 / 56 / 11
serious
Total, serious adverse events
0 / 170 / 200 / 230 / 60 / 50 / 11

Outcome results

Primary

Change From Baseline in Individual BBSS Score for Dyspareunia

The BBSS scale defined deep dyspareunia according to the limitation of sexual activity. The dyspareunia was graded on a scale from 0 to 3 where, 0= None (no discomfort); 1= Mild (tolerated discomfort); 2= Moderate (intercourse painful to the point of interruption); 3= Severe (intercourse avoided because of pain), with higher scores indicating more severe symptoms. Participants were provided with a daily diary to record information about participant-reported scores for endometriosis pain each day. Daily scores were standardized to a 28-day period for each interval (Baseline, On-drug Cycle 1 and Off-drug Cycle 1) calculated as the sum of scores in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement..

Time frame: Baseline (28-day Baseline Menstrual Cycle) to the last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks) and at the end of Off-drug Cycle 1 (Off-drug Cycle 1 is 3 weeks following On-drug Cycle 1)

Population: ITT population included all participants who were randomized and received study drug.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in Individual BBSS Score for DyspareuniaChange from Baseline to Off-Drug Cycle 1-21.50 score on a scale per 28-day periodStandard Deviation 18.8
PlaceboChange From Baseline in Individual BBSS Score for DyspareuniaBaseline41.2 score on a scale per 28-day periodStandard Deviation 24.15
PlaceboChange From Baseline in Individual BBSS Score for DyspareuniaChange from Baseline to On-Drug Cycle 1-21.50 score on a scale per 28-day periodStandard Deviation 18.8
Telapristone Acetate 6 mgChange From Baseline in Individual BBSS Score for DyspareuniaChange from Baseline to Off-Drug Cycle 1-14.75 score on a scale per 28-day periodStandard Deviation 19.749
Telapristone Acetate 6 mgChange From Baseline in Individual BBSS Score for DyspareuniaBaseline36.5 score on a scale per 28-day periodStandard Deviation 24.43
Telapristone Acetate 6 mgChange From Baseline in Individual BBSS Score for DyspareuniaChange from Baseline to On-Drug Cycle 1-14.75 score on a scale per 28-day periodStandard Deviation 19.749
Telapristone Acetate 12 mgChange From Baseline in Individual BBSS Score for DyspareuniaChange from Baseline to Off-Drug Cycle 1-9.83 score on a scale per 28-day periodStandard Deviation 15.594
Telapristone Acetate 12 mgChange From Baseline in Individual BBSS Score for DyspareuniaBaseline39.8 score on a scale per 28-day periodStandard Deviation 21.42
Telapristone Acetate 12 mgChange From Baseline in Individual BBSS Score for DyspareuniaChange from Baseline to On-Drug Cycle 1-9.83 score on a scale per 28-day periodStandard Deviation 15.594
Comparison: On-Drug Cycle 1p-value: 0.1017Wilcoxon Rank- Sum Test
Comparison: On-Drug Cycle 1p-value: 0.1927Wilcoxon Rank- Sum Test
Comparison: Off-Drug Cycle 1p-value: 0.1017Wilcoxon Rank- Sum Test
Comparison: Off-Drug Cycle 1p-value: 0.1927Wilcoxon Rank- Sum Test
Primary

Change From Baseline in Individual BBSS Score for Non-Menstrual Pelvic Pain

The BBSS scale defined non-menstrual pelvic pain according to various degrees of discomfort and use of analgesics. The non-menstrual pelvic pain was graded on a scale from 0 to 3 where, 0= None (absence of pain); 1= Mild (occasional pelvic discomfort); 2= Moderate (noticeable discomfort for most of the cycle); 3= Severe (pain persisting during the cycle or requiring strong analgesics), with higher scores indicating more severe symptoms. Participants were provided with a daily diary to record information about participant-reported scores for endometriosis pain each day. Daily scores were standardized to a 28-day period for each interval (Baseline, On-drug Cycle 1 and Off-drug Cycle 1) calculated as the sum of scores in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement.

Time frame: Baseline (28-day Baseline Menstrual Cycle) to the last day dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks) and to the end of Off-drug Cycle 1 (Off-drug Cycle 1 is 3 weeks following On-drug Cycle 1)

Population: ITT population included all participants who were randomized and received study drug.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in Individual BBSS Score for Non-Menstrual Pelvic PainChange from Baseline to On-Drug Cycle 1-6.06 score on a scale per 28-day periodStandard Deviation 11.132
PlaceboChange From Baseline in Individual BBSS Score for Non-Menstrual Pelvic PainBaseline34.3 score on a scale per 28-day periodStandard Deviation 18.07
PlaceboChange From Baseline in Individual BBSS Score for Non-Menstrual Pelvic PainChange from Baseline to Off-Drug Cycle 1-6.87 score on a scale per 28-day periodStandard Deviation 12.034
Telapristone Acetate 6 mgChange From Baseline in Individual BBSS Score for Non-Menstrual Pelvic PainChange from Baseline to On-Drug Cycle 1-10.01 score on a scale per 28-day periodStandard Deviation 15.2
Telapristone Acetate 6 mgChange From Baseline in Individual BBSS Score for Non-Menstrual Pelvic PainBaseline33.5 score on a scale per 28-day periodStandard Deviation 17.85
Telapristone Acetate 6 mgChange From Baseline in Individual BBSS Score for Non-Menstrual Pelvic PainChange from Baseline to Off-Drug Cycle 1-13.09 score on a scale per 28-day periodStandard Deviation 17.745
Telapristone Acetate 12 mgChange From Baseline in Individual BBSS Score for Non-Menstrual Pelvic PainBaseline32.7 score on a scale per 28-day periodStandard Deviation 16.68
Telapristone Acetate 12 mgChange From Baseline in Individual BBSS Score for Non-Menstrual Pelvic PainChange from Baseline to Off-Drug Cycle 1-8.26 score on a scale per 28-day periodStandard Deviation 13.608
Telapristone Acetate 12 mgChange From Baseline in Individual BBSS Score for Non-Menstrual Pelvic PainChange from Baseline to On-Drug Cycle 1-2.96 score on a scale per 28-day periodStandard Deviation 15.782
Comparison: On-Drug Cycle 1p-value: 0.7508Wilcoxon Rank- Sum Test
Comparison: On-Drug Cycle 1p-value: 0.5507Wilcoxon Rank- Sum Test
Comparison: Off-Drug Cycle 1p-value: 0.3993Wilcoxon Rank- Sum Test
Comparison: Off-Drug Cycle 1p-value: 0.5821Wilcoxon Rank- Sum Test
Primary

Change From Baseline in Individual Biberoglu Behrman Symptom Severity Scale (BBSS) Score for Dysmenorrhea

The BBSS scale defined dysmenorrhea according to the loss of work efficiency and need for bed rest. The dysmenorrhea was graded on a scale from 0 to 3 where, 0 = None; 1 = Mild (some loss in work efficiency); 2 = Moderate (in bed part of the day, occasional loss of work efficiency); 3 = Severe (in bed one or more days, incapacitation), with higher scores indicating more severe symptoms. Participants were provided with a daily diary to record information about participant-reported scores for endometriosis pain each day. Daily scores were standardized to a 28-day period for each interval (Baseline, On-drug Cycle 1 and Off-drug Cycle 1) calculated as the sum of scores in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement.

Time frame: Baseline (28-day Baseline Menstrual Cycle) to the last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks) and at the end of Off-drug Cycle 1 (Off-drug Cycle 1 is 3 weeks following On-drug Cycle 1)

Population: Intent-to-Treat (ITT) population included all participants who were randomized and received study drug.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in Individual Biberoglu Behrman Symptom Severity Scale (BBSS) Score for DysmenorrheaChange from Baseline to On-Drug Cycle 1-3.95 score on a scale per 28-day periodStandard Deviation 5.936
PlaceboChange From Baseline in Individual Biberoglu Behrman Symptom Severity Scale (BBSS) Score for DysmenorrheaBaseline12.6 score on a scale per 28-day periodStandard Deviation 5.58
PlaceboChange From Baseline in Individual Biberoglu Behrman Symptom Severity Scale (BBSS) Score for DysmenorrheaChange from Baseline to Off-Drug Cycle 1-2.43 score on a scale per 28-day periodStandard Deviation 7.852
Telapristone Acetate 6 mgChange From Baseline in Individual Biberoglu Behrman Symptom Severity Scale (BBSS) Score for DysmenorrheaChange from Baseline to On-Drug Cycle 1-8.46 score on a scale per 28-day periodStandard Deviation 5.174
Telapristone Acetate 6 mgChange From Baseline in Individual Biberoglu Behrman Symptom Severity Scale (BBSS) Score for DysmenorrheaBaseline10.8 score on a scale per 28-day periodStandard Deviation 6.9
Telapristone Acetate 6 mgChange From Baseline in Individual Biberoglu Behrman Symptom Severity Scale (BBSS) Score for DysmenorrheaChange from Baseline to Off-Drug Cycle 11.36 score on a scale per 28-day periodStandard Deviation 14.546
Telapristone Acetate 12 mgChange From Baseline in Individual Biberoglu Behrman Symptom Severity Scale (BBSS) Score for DysmenorrheaBaseline11.1 score on a scale per 28-day periodStandard Deviation 5.55
Telapristone Acetate 12 mgChange From Baseline in Individual Biberoglu Behrman Symptom Severity Scale (BBSS) Score for DysmenorrheaChange from Baseline to Off-Drug Cycle 1-1.82 score on a scale per 28-day periodStandard Deviation 9.054
Telapristone Acetate 12 mgChange From Baseline in Individual Biberoglu Behrman Symptom Severity Scale (BBSS) Score for DysmenorrheaChange from Baseline to On-Drug Cycle 1-6.46 score on a scale per 28-day periodStandard Deviation 10.668
Comparison: On-Drug Cycle 1p-value: 0.036Wilcoxon Rank- Sum Test
Comparison: On-Drug Cycle 1p-value: 0.1087Wilcoxon Rank- Sum Test
Comparison: Off-Drug Cycle 1p-value: 0.2263Wilcoxon Rank- Sum Test
Comparison: Off-Drug Cycle 1p-value: 0.5375Wilcoxon Rank- Sum Test
Secondary

Change From Baseline in BBSS Physician-Reported Scores

BBSS Physician-Reported Scores included two scores: Pelvic Tenderness Score (PTS) and Induration Score (IS). PTS was graded on a scale from 0 to 3 where, 0= None; 1= Mild (minimal tenderness on palpation); 2= Moderate (extensive tenderness on palpation); 3= Severe (unable to palpate because of tenderness). IS was graded on a scale from 0 to 3 where, 0= None; 1= Mild (uterus freely mobile, induration on the cul-de-sac); 2= Moderate (thickened and indurated adnexa and cul-de-sac, restricted uterine mobility); 3= Severe (nodular adnexa and cul-de-sac, uterus frequently frozen), with higher scores indicating more severe symptoms. A negative change from Baseline indicates improvement. Data from On-drug cycle and Off-drug interval (ODI) were reported.

Time frame: Baseline (Day 1) to last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks) and at the end of Off-drug Cycle 1 (Off-drug Cycle 1 is 3 weeks following On-drug Cycle 1)

Population: ITT population included all participants who were randomized and received study drug. Last observation carried forward (LOCF) approach was used to impute missing data in this outcome measure.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in BBSS Physician-Reported ScoresPTS at Baseline (BL)1.9 score on a scaleStandard Deviation 0.83
PlaceboChange From Baseline in BBSS Physician-Reported ScoresPTS Change from BL to LOCF Cycle 1-0.76 score on a scaleStandard Deviation 0.903
PlaceboChange From Baseline in BBSS Physician-Reported ScoresPTS Change from BL to ODI Cycle 1-0.92 score on a scaleStandard Deviation 0.954
PlaceboChange From Baseline in BBSS Physician-Reported ScoresIS at Baseline1.0 score on a scaleStandard Deviation 1.06
PlaceboChange From Baseline in BBSS Physician-Reported ScoresIS Change from BL to LOCF Cycle 1-0.53 score on a scaleStandard Deviation 1.007
PlaceboChange From Baseline in BBSS Physician-Reported ScoresIS Change from BL to ODI Cycle 1-0.54 score on a scaleStandard Deviation 0.967
Telapristone Acetate 6 mgChange From Baseline in BBSS Physician-Reported ScoresIS Change from BL to ODI Cycle 1-0.59 score on a scaleStandard Deviation 0.87
Telapristone Acetate 6 mgChange From Baseline in BBSS Physician-Reported ScoresPTS at Baseline (BL)1.8 score on a scaleStandard Deviation 0.77
Telapristone Acetate 6 mgChange From Baseline in BBSS Physician-Reported ScoresIS at Baseline1.1 score on a scaleStandard Deviation 1.05
Telapristone Acetate 6 mgChange From Baseline in BBSS Physician-Reported ScoresIS Change from BL to LOCF Cycle 1-0.70 score on a scaleStandard Deviation 0.923
Telapristone Acetate 6 mgChange From Baseline in BBSS Physician-Reported ScoresPTS Change from BL to LOCF Cycle 1-0.95 score on a scaleStandard Deviation 1.146
Telapristone Acetate 6 mgChange From Baseline in BBSS Physician-Reported ScoresPTS Change from BL to ODI Cycle 1-0.59 score on a scaleStandard Deviation 0.712
Telapristone Acetate 12 mgChange From Baseline in BBSS Physician-Reported ScoresPTS Change from BL to LOCF Cycle 1-0.43 score on a scaleStandard Deviation 0.843
Telapristone Acetate 12 mgChange From Baseline in BBSS Physician-Reported ScoresPTS Change from BL to ODI Cycle 1-0.18 score on a scaleStandard Deviation 1.006
Telapristone Acetate 12 mgChange From Baseline in BBSS Physician-Reported ScoresIS Change from BL to ODI Cycle 1-0.41 score on a scaleStandard Deviation 0.796
Telapristone Acetate 12 mgChange From Baseline in BBSS Physician-Reported ScoresIS at Baseline0.8 score on a scaleStandard Deviation 0.83
Telapristone Acetate 12 mgChange From Baseline in BBSS Physician-Reported ScoresPTS at Baseline (BL)1.5 score on a scaleStandard Deviation 0.67
Telapristone Acetate 12 mgChange From Baseline in BBSS Physician-Reported ScoresIS Change from BL to LOCF Cycle 1-0.39 score on a scaleStandard Deviation 0.988
Comparison: PTS: LOCF Cycle 1p-value: 0.4365Wilcoxon Rank- Sum Test
Comparison: PTS: LOCF Cycle 1p-value: 0.1302Wilcoxon Rank- Sum Test
Comparison: PTS: ODI Cycle 1p-value: 0.3591Wilcoxon Rank- Sum Test
Comparison: PTS: ODI Cycle 1p-value: 0.0872Wilcoxon Rank- Sum Test
Comparison: IS: LOCF Cycle 1p-value: 0.4814Wilcoxon Rank- Sum Test
Comparison: IS: LOCF Cycle 1p-value: 0.9162Wilcoxon Rank- Sum Test
Comparison: IS: ODI Cycle 1p-value: 0.6607Wilcoxon Rank- Sum Test
Comparison: IS: ODI Cycle 1p-value: 0.9527Wilcoxon Rank- Sum Test
Secondary

Change From Baseline in Non-Prescription Analgesics Usage

An analgesic was any member of the group of drugs used to achieve analgesia, relief from pain. Nonprescription analgesics are over-the-counter (OTC) analgesics. Participants were provided with a daily diary to record the number of pills of OTC drugs taken for endometriosis-related pain symptoms each day. Daily number of pills were standardized to a 28-day period for each interval (Baseline and On-drug Cycle 1) calculated as the sum of pills in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement.

Time frame: Baseline (28-day Baseline Menstrual Cycle) to last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks)

Population: ITT population included all participants who were randomized and received study drug.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in Non-Prescription Analgesics UsageBaseline19.0 pills per 28-day periodStandard Deviation 29.05
PlaceboChange From Baseline in Non-Prescription Analgesics UsageChange from Baseline to On-Drug Cycle1.78 pills per 28-day periodStandard Deviation 21.426
Telapristone Acetate 6 mgChange From Baseline in Non-Prescription Analgesics UsageBaseline15.4 pills per 28-day periodStandard Deviation 26.95
Telapristone Acetate 6 mgChange From Baseline in Non-Prescription Analgesics UsageChange from Baseline to On-Drug Cycle-12.79 pills per 28-day periodStandard Deviation 25.628
Telapristone Acetate 12 mgChange From Baseline in Non-Prescription Analgesics UsageBaseline43.2 pills per 28-day periodStandard Deviation 98.6
Telapristone Acetate 12 mgChange From Baseline in Non-Prescription Analgesics UsageChange from Baseline to On-Drug Cycle-6.81 pills per 28-day periodStandard Deviation 25.615
Comparison: On-Drug Cyclep-value: 0.114Wilcoxon Rank- Sum Test
Comparison: On-Drug Cyclep-value: 0.1636Wilcoxon Rank- Sum Test
Secondary

Change From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)

NRS is a valid and reliable clinical measure to assess pain intensity. Sex Avoidance Pain (SAP) and Endometriosis Pain (EP) were assessed using NRS-11 to measure pain based on pain ratings given by participants on the scale of 0 to 10 where, 0 represents no pain and 10 represents the worst pain possible. Participants were provided with a daily diary to record information about participant-reported scores for endometriosis pain each day. Daily scores were standardized to a 28-day period for each interval (Baseline, On-drug Cycle 1 and Off-drug Cycle 1) calculated as the sum of scores in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement.

Time frame: Baseline (28-day Baseline Menstrual Cycle) to the last day dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks) and to the end of Off-drug Cycle 1 (Off-drug Cycle 1 is 3 weeks following On-drug Cycle 1)

Population: ITT population included all participants who were randomized and received study drug.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)SAP Baseline67.9 score on a scale per 28-day periodStandard Deviation 13.26
PlaceboChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)SAP Change from BL to On-Drug Cycle 1-2.52 score on a scale per 28-day periodStandard Deviation 4.527
PlaceboChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)SAP Change from BL to Off-Drug Cycle 1-2.21 score on a scale per 28-day periodStandard Deviation 10.125
PlaceboChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)EP Baseline136.9 score on a scale per 28-day periodStandard Deviation 72.48
PlaceboChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)EP Change from BL to On-Drug Cycle 1-42.84 score on a scale per 28-day periodStandard Deviation 39.777
PlaceboChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)EP Change from BL to Off-Drug Cycle 1-44.91 score on a scale per 28-day periodStandard Deviation 43.163
Telapristone Acetate 6 mgChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)EP Change from BL to Off-Drug Cycle 1-27.06 score on a scale per 28-day periodStandard Deviation 46.525
Telapristone Acetate 6 mgChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)SAP Baseline64.7 score on a scale per 28-day periodStandard Deviation 15.29
Telapristone Acetate 6 mgChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)EP Baseline136.2 score on a scale per 28-day periodStandard Deviation 70.6
Telapristone Acetate 6 mgChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)EP Change from BL to On-Drug Cycle 1-52.05 score on a scale per 28-day periodStandard Deviation 39.14
Telapristone Acetate 6 mgChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)SAP Change from BL to On-Drug Cycle 1-9.43 score on a scale per 28-day periodStandard Deviation 14.48
Telapristone Acetate 6 mgChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)SAP Change from BL to Off-Drug Cycle 1-5.88 score on a scale per 28-day periodStandard Deviation 27.822
Telapristone Acetate 12 mgChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)SAP Change from BL to On-Drug Cycle 1-0.53 score on a scale per 28-day periodStandard Deviation 10.544
Telapristone Acetate 12 mgChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)SAP Change from BL to Off-Drug Cycle 13.04 score on a scale per 28-day periodStandard Deviation 14.071
Telapristone Acetate 12 mgChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)EP Change from BL to Off-Drug Cycle 1-29.02 score on a scale per 28-day periodStandard Deviation 45.496
Telapristone Acetate 12 mgChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)EP Baseline142.4 score on a scale per 28-day periodStandard Deviation 70.92
Telapristone Acetate 12 mgChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)SAP Baseline60.6 score on a scale per 28-day periodStandard Deviation 13.86
Telapristone Acetate 12 mgChange From Baseline in Participant-Reported Pain Using a Numerical Rating Scale (NRS)EP Change from BL to On-Drug Cycle 1-25.98 score on a scale per 28-day periodStandard Deviation 40.954
Comparison: SAP: On-Drug Cycle 1p-value: 0.6131Wilcoxon Rank- Sum Test
Comparison: SAP: On-Drug Cycle 1p-value: 0.7881Wilcoxon Rank- Sum Test
Comparison: SAP: Off-Drug Cycle 1p-value: 0.9376Wilcoxon Rank- Sum Test
Comparison: SAP: Off-Drug Cycle 1p-value: 0.6552Wilcoxon Rank- Sum Test
Comparison: EP: On-Drug Cycle 1p-value: 0.7143Wilcoxon Rank- Sum Test
Comparison: EP: On-Drug Cycle 1p-value: 0.2985Wilcoxon Rank- Sum Test
Comparison: EP: Off-Drug Cycle 1p-value: 0.3162Wilcoxon Rank- Sum Test
Comparison: EP: Off-Drug Cycle 1p-value: 0.7503Wilcoxon Rank- Sum Test
Secondary

Change From Baseline in Participant-Reported Pain Using Visual Analog Scale (VAS) Pain Score

A 100-millimeter (mm) VAS was used to grade the severity of dysmenorrhea, and non-menstrual pelvic pain. The lowest value indicated the absence of pain and the highest value indicated pain as bad as it could be; a score of 1-50 was considered mild pain, 51-80 moderate pain and 81-100 severe pain. A negative change from Baseline indicates improvement. Participants were provided with a daily diary to record information about participant-reported scores for endometriosis pain.

Time frame: Baseline (Day 1) to last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks) and at the end of Off-drug Cycle 1 (Off-drug Cycle 1 is 3 weeks following On-drug Cycle 1)

Population: ITT population included all participants who were randomized and received study drug.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in Participant-Reported Pain Using Visual Analog Scale (VAS) Pain ScorePercentage change from BL to LOCF Cycle 1-30.11 score on a scaleStandard Deviation 39.877
PlaceboChange From Baseline in Participant-Reported Pain Using Visual Analog Scale (VAS) Pain ScoreBaseline57.0 score on a scaleStandard Deviation 27.68
PlaceboChange From Baseline in Participant-Reported Pain Using Visual Analog Scale (VAS) Pain ScorePercent change from BL to ODI Cycle 1-29.36 score on a scaleStandard Deviation 46.552
Telapristone Acetate 6 mgChange From Baseline in Participant-Reported Pain Using Visual Analog Scale (VAS) Pain ScorePercentage change from BL to LOCF Cycle 1-46.10 score on a scaleStandard Deviation 46.871
Telapristone Acetate 6 mgChange From Baseline in Participant-Reported Pain Using Visual Analog Scale (VAS) Pain ScoreBaseline66.6 score on a scaleStandard Deviation 25.06
Telapristone Acetate 6 mgChange From Baseline in Participant-Reported Pain Using Visual Analog Scale (VAS) Pain ScorePercent change from BL to ODI Cycle 1-12.57 score on a scaleStandard Deviation 52.07
Telapristone Acetate 12 mgChange From Baseline in Participant-Reported Pain Using Visual Analog Scale (VAS) Pain ScoreBaseline63.8 score on a scaleStandard Deviation 29.14
Telapristone Acetate 12 mgChange From Baseline in Participant-Reported Pain Using Visual Analog Scale (VAS) Pain ScorePercent change from BL to ODI Cycle 1118.34 score on a scaleStandard Deviation 596.879
Telapristone Acetate 12 mgChange From Baseline in Participant-Reported Pain Using Visual Analog Scale (VAS) Pain ScorePercentage change from BL to LOCF Cycle 1-17.02 score on a scaleStandard Deviation 88.394
Comparison: LOCF Cycle 1p-value: 0.2812Wilcoxon Rank- Sum Test
Comparison: LOCF Cycle 1p-value: 0.5858Wilcoxon Rank- Sum Test
Comparison: ODI Cycle 1p-value: 0.4116Wilcoxon Rank- Sum Test
Comparison: ODI Cycle 1p-value: 0.4252Wilcoxon Rank- Sum Test
Secondary

Change From Baseline in Prescription Analgesics Usage

An analgesic was any member of the group of drugs used to achieve analgesia, relief from pain. Prescription analgesics are analgesics prescribed by the physician. Participants were provided with a daily diary to record the number of pills of non-narcotic prescription and narcotic analgesics taken for endometriosis-related pain symptoms each day. Daily number of pills were standardized to a 28-day period for each interval (Baseline and On-drug Cycle 1) calculated as the sum of pills in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement.

Time frame: Baseline (28-day Baseline Menstrual Cycle) to the last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks)

Population: ITT population included all participants who were randomized and received study drug.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in Prescription Analgesics UsageBaseline14.8 pills per 28-day periodStandard Deviation 18.13
PlaceboChange From Baseline in Prescription Analgesics UsageChange from Baseline to On-Drug Cycle-6.74 pills per 28-day periodStandard Deviation 14.897
Telapristone Acetate 6 mgChange From Baseline in Prescription Analgesics UsageBaseline14.9 pills per 28-day periodStandard Deviation 20.72
Telapristone Acetate 6 mgChange From Baseline in Prescription Analgesics UsageChange from Baseline to On-Drug Cycle-7.20 pills per 28-day periodStandard Deviation 15.948
Telapristone Acetate 12 mgChange From Baseline in Prescription Analgesics UsageBaseline31.4 pills per 28-day periodStandard Deviation 52.55
Telapristone Acetate 12 mgChange From Baseline in Prescription Analgesics UsageChange from Baseline to On-Drug Cycle-5.87 pills per 28-day periodStandard Deviation 27.753
Comparison: On-Drug Cyclep-value: 0.7507Wilcoxon Rank- Sum Test
Comparison: On-Drug Cyclep-value: 0.8919Wilcoxon Rank- Sum Test
Secondary

Change From Baseline in Total Analgesics Usage

An analgesic was any member of the group of drugs used to achieve analgesia, relief from pain. The total analgesics is comprised of prescription and non-prescription analgesics. Participants were provided with a daily diary to record the number of pills of OTC and prescription analgesics taken for endometriosis-related pain symptoms each day. The daily number of pills were standardized to a 28-day period for each interval (Baseline and On-drug Cycle 1) calculated as the sum of pills in the interval divided by the number of the days in the interval multiplied by 28. A negative change from Baseline indicates improvement.

Time frame: Baseline (28-day Baseline Menstrual Cycle) to last day of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks)

Population: ITT Population consisted of all participants who were randomized and received study drug.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in Total Analgesics UsageBaseline33.8 pills per 28-day periodStandard Deviation 32.46
PlaceboChange From Baseline in Total Analgesics UsageChange from Baseline to On-Drug Cycle-4.96 pills per 28-day periodStandard Deviation 12.525
Telapristone Acetate 6 mgChange From Baseline in Total Analgesics UsageBaseline30.2 pills per 28-day periodStandard Deviation 35.09
Telapristone Acetate 6 mgChange From Baseline in Total Analgesics UsageChange from Baseline to On-Drug Cycle-19.99 pills per 28-day periodStandard Deviation 25.132
Telapristone Acetate 12 mgChange From Baseline in Total Analgesics UsageBaseline74.6 pills per 28-day periodStandard Deviation 126.2
Telapristone Acetate 12 mgChange From Baseline in Total Analgesics UsageChange from Baseline to On-Drug Cycle-12.67 pills per 28-day periodStandard Deviation 38.865
Comparison: On-Drug Cyclep-value: 0.1253Wilcoxon Rank- Sum Test
Comparison: On-Drug Cyclep-value: 0.3442Wilcoxon Rank- Sum Test
Secondary

Percentage Change From Baseline in Non-Prescription Analgesics Usage

An analgesic was any member of the group of drugs used to achieve analgesia, relief from pain. Nonprescription analgesics are OTC analgesics. Participants were provided with a daily diary to record the number of pills of over the counter drugs taken for endometriosis-related pain symptoms each day. Daily number of pills were standardized to a 28-day period for each interval (Baseline and last 28-days On-drug Cycle 1) calculated as the sum of pills in the interval divided by the number of the days in the interval multiplied by 28. The percent change from baseline in the analgesic usage was determined by subtracting the baseline analgesic usage from the analgesic usage during the last nominal 28 day menstrual cycle, divided by the baseline analgesic usage, and multiplied by 100%. A negative percent change indicates improvement.

Time frame: Baseline (28-day Baseline Menstrual Cycle) to last 28 days of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks)

Population: ITT population included all participants who were randomized and received study drug.

ArmMeasureValue (MEAN)Dispersion
PlaceboPercentage Change From Baseline in Non-Prescription Analgesics Usage6.06 percent changeStandard Deviation 62.237
Telapristone Acetate 6 mgPercentage Change From Baseline in Non-Prescription Analgesics Usage-22.80 percent changeStandard Deviation 57.498
Telapristone Acetate 12 mgPercentage Change From Baseline in Non-Prescription Analgesics Usage-31.49 percent changeStandard Deviation 60.114
Comparison: On-Drug Cyclep-value: 0.114Wilcoxon Rank- Sum Test
Comparison: On-Drug Cyclep-value: 0.0733Wilcoxon Rank- Sum Test
Secondary

Percentage Change From Baseline in Prescription Analgesics Usage

An analgesic was any member of the group of drugs used to achieve analgesia, relief from pain. Prescription analgesics are analgesics prescribed by the physician. Participants were provided with a daily diary to record the number of pills of non-narcotic prescription and narcotic analgesics taken for endometriosis-related pain symptoms each day. Daily number of pills were standardized to a 28-day period for each interval (Baseline and last 28-days On-drug Cycle 1) calculated as the sum of pills in the interval divided by the number of the days in the interval multiplied by 28.The percent change from baseline in the analgesic usage was determined by subtracting the baseline analgesic usage from the analgesic usage during the last nominal 28 day menstrual cycle, divided by the baseline analgesic usage, and multiplied by 100%. A negative percent change from Baseline indicates improvement.

Time frame: Baseline (28-day Baseline Menstrual Cycle) to last 28 days of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks)

Population: ITT population included all participants who were randomized and received study drug.

ArmMeasureValue (MEAN)Dispersion
PlaceboPercentage Change From Baseline in Prescription Analgesics Usage-9.69 percent changeStandard Deviation 71.98
Telapristone Acetate 6 mgPercentage Change From Baseline in Prescription Analgesics Usage-21.63 percent changeStandard Deviation 76.53
Telapristone Acetate 12 mgPercentage Change From Baseline in Prescription Analgesics Usage-6.36 percent changeStandard Deviation 174.21
Comparison: On-Drug Cyclep-value: 0.478Wilcoxon Rank- Sum Test
Comparison: On-Drug Cyclep-value: 0.2354Wilcoxon Rank- Sum Test
Secondary

Percentage Change From Baseline in Total Analgesics Usage

An analgesic was any member of the group of drugs used to achieve analgesia, relief from pain. The total analgesics is comprised of prescription and non-prescription analgesics. Participants were provided with a daily diary to record the number of pills of OTC and prescription analgesics taken for endometriosis-related pain symptoms each day. Daily number of pills were standardized to a 28-day period for each interval (Baseline and last 28-days On-drug Cycle 1) calculated as the sum of pills in the interval divided by the number of the days in the interval multiplied by 28. The percent change from baseline in the analgesic usage was determined by subtracting the baseline analgesic usage from the analgesic usage during the last nominal 28-day menstrual cycle, divided by the baseline analgesic usage, and multiplied by 100%. A negative percent change indicates improvement.

Time frame: Baseline (28-day Baseline Menstrual Cycle) to last 28 days of dosing in Cycle 1 (On-drug Cycle 1 is 18 weeks)

Population: ITT population included all participants who were randomized and received study drug.

ArmMeasureValue (MEAN)Dispersion
PlaceboPercentage Change From Baseline in Total Analgesics Usage-13.88 percent changeStandard Deviation 64.098
Telapristone Acetate 6 mgPercentage Change From Baseline in Total Analgesics Usage-51.96 percent changeStandard Deviation 45.461
Telapristone Acetate 12 mgPercentage Change From Baseline in Total Analgesics Usage-36.05 percent changeStandard Deviation 57.129
Comparison: On-Drug Cyclep-value: 0.0303Wilcoxon Rank- Sum Test
Comparison: On-Drug Cyclep-value: 0.2864Wilcoxon Rank- Sum Test

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026