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A Safety & Efficacy Study of BGS649 in Women With Refractory Endometriosis

A Double Blind, Randomized, Controlled, Multicenter, Efficacy and Safety Study of Oral BGS649 vs. Placebo (Each Co-administered With a Combined Oral Contraceptive) Assessing Pain Response in Patients With Refractory Endometriosis

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01116440
Enrollment
27
Registered
2010-05-05
Start date
2010-04-15
Completion date
2012-03-21
Last updated
2020-11-23

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

Conditions

Pelvic Pain Associated With Refractory Endometriosis

Keywords

Menstrual pain, Refractory endometriosis, Pelvic pain

Brief summary

The purpose of this study is to determine efficacy, safety, tolerability and pharmacokinetics of multiple doses of BGS649 with concurrent daily administration of combined oral contraception in patients with refractory endometriosis

Interventions

DRUGBGS649

0.1 mg capsules for oral administration. A total dose of 3 capsules of BGS649 0.1mg will be administered at randomization, week 4, and week 8 at the study site.

DRUGPlacebo

Placebo matching BGS649 will be provided by Novartis as capsules for oral administration. Three capsules of placebo will be administered at randomization, week 4, and week 8 at the study site.

Sponsors

Novartis
CollaboratorINDUSTRY
Mereo BioPharma
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 49 Years
Healthy volunteers
No

Inclusion criteria

* Must have surgical diagnosis of endometriosis est. w/in 5 years before screening. Subjects must have self reported moderate to severe pelvic pain at screening to be confirmed during the run-in-phase * Subjects with moderate to severe pelvic pain who were refractory to surgery (persistent or recurrent pelvic pain within 24 months after any therapeutic surgery) and at least two hormonal therapies from two different classes, including one approved hormonal therapy

Exclusion criteria

* Subjects who have undergone hysterectomy or bilateral oophorectomy. * Surgical treatment of endometriosis within 3 months before screening. * Subjects who are pregnant or who were pregnant within 3 months of visit one. * Subjects who are nursing or lactating * Subjects who are tobacco smokers. Other protocol-defined inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Mean Change in Baseline to Week 12 in Numeric Rating Scale Pelvic Pain Score12 weeksMean change from baseline to Month 3 (Week 12) in Number Rating Scale pelvic pain score. The Numeric Rating Scale is a scale between 0 and 10 where 0 is no pain and 10 is the worse pain you can imagine.

Secondary

MeasureTime frameDescription
Mean Change From Baseline to 4 Weeks in Numeric Rating Scale Pelvic Pain Scores4 weeksMean change from baseline in Numeric Rating Scale pelvic pain scores to 4 weeks. The Numeric Rating Scale is a scale between 0 and 10 where 0 is no pain and 10 is the worse pain you can imagine.
Percentage of Patients Achieving a Response in Numeric Rating Scale Pelvic Pain Score12 weeksThe proportion (expressed as a percentage) of patients achieving a response in the Numeric Rating Scale pelvic pain score where a response is defined as greater than or equal to 2-point improvement from baseline or a greater than or equal to 30% improvement in the score. The Numeric Rating Scale is a scale between 0 and 10 where 0 is no pain and 10 is the worse pain you can imagine.
Mean Change From Baseline in Numeric Rating Scale Pelvic Pain Scores8 weeksMean change from baseline in Numeric Rating Scale pelvic pain scores to 8 weeks. Where the Numeric Rate Scale Pelvic Pain Score is a scale between 0 and 10, where 0 is no pain and is the worse pain you can imagine.
Percentage of Patients Achieving a Response in Their Pelvic Pain Score Measured on the Modified Biberoglu & Behrman Scale12 weeksThe proportion of patients (expressed as a percentage) achieving a response to their pelvic pain score measure on the Biberoglu and Behrman pelvic pain score where a response is defined as a greater than or equal to 1-point improvement from baseline. B & B scales allow for grading pain with a score between 0 and 4 with higher number being more severe pain.

Countries

Puerto Rico, United States

Participant flow

Participants by arm

ArmCount
BGS649 Co-administered With Levora 28™
BGS649: 0.1 mg capsules for oral administration. A total dose of 3 capsules of BGS649 0.1mg administered at randomization, week 4, and week 8 at the study site.
11
Placebo Co-administered With Levora 28™
Placebo: Placebo matching BGS649 provided by Novartis as capsules for oral administration. Three capsules of placebo administered at randomization, week 4, and week 8 at the study site.
16
Total27

Withdrawals & dropouts

PeriodReasonFG000FG001
Follow-upLost to Follow-up01
Follow-upWithdrawal by Subject01
TreatmentAdverse Event01
TreatmentLack of Efficacy01
TreatmentLost to Follow-up11
TreatmentProtocol Violation02
TreatmentWithdrawal by Subject22
WithdrawalLost to Follow-up01
WithdrawalWithdrawal by Subject01

Baseline characteristics

CharacteristicBGS649 Co-administered With Levora 28™Placebo Co-administered With Levora 28™Total
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
11 Participants16 Participants27 Participants
Age, Continuous29.4 years
STANDARD_DEVIATION 5.75
29.4 years
STANDARD_DEVIATION 5.67
29.4 years
STANDARD_DEVIATION 5.59
Body Mass Index27.9 kg/m^2
STANDARD_DEVIATION 4.98
25.6 kg/m^2
STANDARD_DEVIATION 4.11
26.6 kg/m^2
STANDARD_DEVIATION 4.54
Race/Ethnicity, Customized
Black
1 Participants3 Participants4 Participants
Race/Ethnicity, Customized
Caucasian
5 Participants12 Participants17 Participants
Race/Ethnicity, Customized
Other
5 Participants1 Participants6 Participants
Region of Enrollment
United States
11 Participants16 Participants27 Participants
Sex: Female, Male
Female
11 Participants16 Participants27 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
10 / 1210 / 15
serious
Total, serious adverse events
1 / 122 / 15

Outcome results

Primary

Mean Change in Baseline to Week 12 in Numeric Rating Scale Pelvic Pain Score

Mean change from baseline to Month 3 (Week 12) in Number Rating Scale pelvic pain score. The Numeric Rating Scale is a scale between 0 and 10 where 0 is no pain and 10 is the worse pain you can imagine.

Time frame: 12 weeks

Population: Full analysis set. All patients randomised excluding those who were randomised inadvertently and did not receive study drug

ArmMeasureValue (MEAN)Dispersion
BGS649 Co-administered With Levora 28™Mean Change in Baseline to Week 12 in Numeric Rating Scale Pelvic Pain Score-0.7637 units on a scaleStandard Deviation 2.12386
Placebo Co-administered With Levora 28™Mean Change in Baseline to Week 12 in Numeric Rating Scale Pelvic Pain Score-2.1706 units on a scaleStandard Deviation 2.27246
Secondary

Mean Change From Baseline in Numeric Rating Scale Pelvic Pain Scores

Mean change from baseline in Numeric Rating Scale pelvic pain scores to 8 weeks. Where the Numeric Rate Scale Pelvic Pain Score is a scale between 0 and 10, where 0 is no pain and is the worse pain you can imagine.

Time frame: 8 weeks

Population: Full Analysis Set. All randomized patients excluding patients randomized inadvertently who did not receive drug (ITT)

ArmMeasureValue (MEAN)Dispersion
BGS649 Co-administered With Levora 28™Mean Change From Baseline in Numeric Rating Scale Pelvic Pain Scores-1.2840 score on a scaleStandard Deviation 2.18569
Placebo Co-administered With Levora 28™Mean Change From Baseline in Numeric Rating Scale Pelvic Pain Scores-2.0601 score on a scaleStandard Deviation 2.1181
Secondary

Mean Change From Baseline to 4 Weeks in Numeric Rating Scale Pelvic Pain Scores

Mean change from baseline in Numeric Rating Scale pelvic pain scores to 4 weeks. The Numeric Rating Scale is a scale between 0 and 10 where 0 is no pain and 10 is the worse pain you can imagine.

Time frame: 4 weeks

Population: Full Analysis Set. All randomized patients excluding patients randomized inadvertently who did not receive drug (ITT)

ArmMeasureValue (MEAN)Dispersion
BGS649 Co-administered With Levora 28™Mean Change From Baseline to 4 Weeks in Numeric Rating Scale Pelvic Pain Scores-0.6596 score on a scaleStandard Deviation 1.34546
Placebo Co-administered With Levora 28™Mean Change From Baseline to 4 Weeks in Numeric Rating Scale Pelvic Pain Scores-0.9282 score on a scaleStandard Deviation 1.05794
Secondary

Percentage of Patients Achieving a Response in Numeric Rating Scale Pelvic Pain Score

The proportion (expressed as a percentage) of patients achieving a response in the Numeric Rating Scale pelvic pain score where a response is defined as greater than or equal to 2-point improvement from baseline or a greater than or equal to 30% improvement in the score. The Numeric Rating Scale is a scale between 0 and 10 where 0 is no pain and 10 is the worse pain you can imagine.

Time frame: 12 weeks

Population: Full Analysis Set. All participants randomized except patients inadvertently randomized who didn't receive study drug (ITT principles)

ArmMeasureValue (NUMBER)
BGS649 Co-administered With Levora 28™Percentage of Patients Achieving a Response in Numeric Rating Scale Pelvic Pain Score9.1 percentage of participants
Placebo Co-administered With Levora 28™Percentage of Patients Achieving a Response in Numeric Rating Scale Pelvic Pain Score37.5 percentage of participants
Secondary

Percentage of Patients Achieving a Response in Their Pelvic Pain Score Measured on the Modified Biberoglu & Behrman Scale

The proportion of patients (expressed as a percentage) achieving a response to their pelvic pain score measure on the Biberoglu and Behrman pelvic pain score where a response is defined as a greater than or equal to 1-point improvement from baseline. B & B scales allow for grading pain with a score between 0 and 4 with higher number being more severe pain.

Time frame: 12 weeks

Population: Full Analysis Set. All participants randomized except patients inadvertently randomized who didn't receive study drug (ITT principles)

ArmMeasureValue (NUMBER)
BGS649 Co-administered With Levora 28™Percentage of Patients Achieving a Response in Their Pelvic Pain Score Measured on the Modified Biberoglu & Behrman Scale0 percentage of participants
Placebo Co-administered With Levora 28™Percentage of Patients Achieving a Response in Their Pelvic Pain Score Measured on the Modified Biberoglu & Behrman Scale31.3 percentage of participants

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