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A 6 Month Safety Extension Study of MBGS205

A 6 Month, Double-blind Safety Extension Study of MBGS205

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02908074
Enrollment
143
Registered
2016-09-20
Start date
2016-11-15
Completion date
2018-11-21
Last updated
2023-05-18

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

Conditions

Hypogonadotropic Hypogonadism

Keywords

Hypogonadotropic, hypogonadism, testosterone

Brief summary

Phase IIb, multicentre, double-blind, randomised, placebo-controlled parallel-group 36-week study evaluating safety and efficacy of BGS649 in male obese subjects with hypogonadotropic hypogonadism (HH)

Detailed description

This is a 6 months, active treatment, extension study, open to subjects who have completed full 24 weeks in Study MBGS205 (A Phase IIb multicentre, double-blind, dose-ranging, randomised, placebo-controlled study evaluating safety and efficacy of BGS649 in male obese subjects with hypogonadotropic hypogonadism \[HH\]).The main purpose of Study MBGS206 is to evaluate long term safety and efficacy parameters in subjects after 12 months exposure with BGS649.

Interventions

DRUGBGS649

Capsules will be taken weekly for a maximum of 24 weeks

Sponsors

Mereo BioPharma
Lead SponsorINDUSTRY

Study design

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

Eligibility

Sex/Gender
MALE
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Participating in Study MBGS205 and completion of the 24 week treatment period without meeting any discontinuation criteria of Study MBGS205 * In opinion of the investigator has been compliant with the requirements of the Study MBGS205 protocol.

Exclusion criteria

-Meeting any of the discontinuation criteria of initial Study MBGS205

Design outcomes

Primary

MeasureTime frameDescription
Percent Change in Bone Mineral Density Measured by DEXA (g/cm^2) From Baseline in Study MBGS205 to Week 48 in Study MBGS206At 48 weeks compared to baseline in MBGS205Percentage change in lumbar bone mineral density measured by DEXA (g/cm\^2) from Baseline in Study MBGS205 to Week 48 in Study MBGS206 by dose group in participants randomised to active treatment in MBGS205.

Secondary

MeasureTime frameDescription
Descriptive Summary of Percentage Change in Bone Turnover Markers for Subjects Randomised to Active Treatment in Study MBGS20548 WeeksPercentage change from baseline in bone turnover markers (C-terminal telopeptide \[CTx1\], osteocalcin, bone alkaline phosphatase, and procollagen type 1 N-propeptide \[P1NP\]) from Baseline in Study MBGS205 to Week 48 in Study MBGS206
Percentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by Location48 WeeksProportion of subjects with DEXA scan T- scores ≤ -2.5 at Week 48 in MBGS206 compared to baseline in MBGS205 by body location (using overread scan images).
Percentage Change From Baseline in Bone Mineral Density by Location and Vitamin D Deficiency48 WeeksPercentage change from baseline in bone density and bone biomarkers for vitamin D deficiency from Baseline in Study MBGS205 to Week 48 in Study MBGS206. Bone mineral density (g/cm\^2) measured by DEXA over-read by a central reader.
Change From Baseline of Oestradiol (Absolute) From Baseline in Study MBGS205 to Week 4848 WeeksDescriptive Summary of Oestradiol and Testosterone/Oestradiol Ratio for Subjects Randomised to Active Treatment in Study MBGS205
Change From Baseline of Oestradiol (Percentage) From Baseline in Study MBGS205 to Week 4848 WeeksDescriptive Summary of Percentage Change in Oestradiol and Testosterone/Oestradiol Ratio for Subjects Randomised to Active Treatment in Study MBGS205
Analysis of Proportion of Subjects That Overshoot Testosterone for Subjects Randomised to Active Treatment in Study MBGS20548 WeeksProportion of subjects that overshoot testosterone (total testosterone above 1000 ng/dl \[35 nmol/L\], from first dose of study drug in Study MBGS205 until study completion)
Change From Baseline in PSA From Baseline in Study MBGS205 to Week 48 in Study MBGS20648 WeeksSummary of Laboratory Test Results and Change from Baseline: PSA for Subjects Randomised to Active Treatment in Study MBGS205
Percentage Change From Baseline in DEXA Scan Density (g/cm^2) by Location for Subjects Randomised to Active Treatment in Study MBGS205 (Over-read)48 WeeksPercentage change from baseline in hip (total and femoral neck) bone mineral density measured by DEXA (g/cm\^2) from Baseline in Study MBGS205 to Week 48 in Study MBGS206
Change From Baseline in Blood Pressure From Baseline to Week 48MBGS20548 WeeksChange from baseline in blood pressure (systolic and diastolic measured in mmHg) Baseline in Study MBGS205 to Week 48 in Study MBGS206.
Percentage of Subjects Achieving Normalisation of Bioavailable (Total) Testosterone at Wk 4848 WeeksPercentage of subjects where bioavailable testosterone was normalised at week 48 in Study MBGS206. Where normalisation was considered testosterone in the range 300-1000 mg/dL.
Descriptive Summary of Total Testosterone (ng/dL) for Subjects Randomised to Active Treatment in Study MBGS20548 WeeksChange from baseline in total, free and bioavailable testosterone from Baseline in Study MBGS205 to Week 48 in Study MBGS206
Change From Baseline in Free and Bioavailable Testosterone48 WeeksChange from baseline in free and bioavailable (total) testosterone from baseline in Study MBGS205 to Week 48 in Study MBGS206.
Change From Baseline in Luteinizing Hormone From Baseline to Week 4848 WeeksChange from baseline of LH from Baseline in Study MBGS205 to Week 48 in Study MBGS206.
Change From Baseline in Follicle Stimulating Hormone at Week 4848 WeeksChange from Baseline in Study MBGS205 to Week 48 in Study MBGS206 in follicle stimulating hormone (FSH).
Percentage Change in Bone Alkaline Phosphatase48 weeksPercentage change in baseline in alkaline phosphatase from baseline in study MBGS205 to week 48 in MBGS206.
Change From Baseline in Haematocrit at Week 4848 WeeksChange from baseline in haematocrit from Baseline in Study MBGS205 to Week 48 in Study MBGS206

Countries

United States

Participant flow

Pre-assignment details

Participants receiving active doses of BGS649 in Study MBGS205 continued with the same dose in Study MBGS206; Participants receiving placebo in Study MBGS205 were re-randomised at the Baseline visit to receive one of the 3 treatment regimens (BGS649 0.1 mg, 0.3 mg, and 1.0 mg) in a 1:1:1 ratio, and were only assessed for safety in study MBGS206.

Participants by arm

ArmCount
BGS649 0.1 mg
Drug: BGS649 Dose 1 weekly BGS649: Capsules will be taken weekly for a maximum of 24 weeks
38
BGS649 0.3 mg
Drug: BGS649 Dose 2 weekly BGS649: Capsules will be taken weekly for a maximum of 24 weeks
33
BGS649 1.0 mg
Drug: BGS649 Dose 3 weekly BGS649: Capsules will be taken weekly for a maximum of 24 weeks
30
Placebo to BGS649 0.1 mg
Drug: BGS649 Dose 1 weekly BGS649: Capsules will be taken weekly for a maximum of 24 weeks
13
Placebo to BGS649 0.3 mg
Drug: BGS649 Dose 2 weekly BGS649: Capsules will be taken weekly for a maximum of 24 weeks
17
Placebo to BGS649 1.0 mg
Drug: BGS649 Dose 3 weekly BGS649: Capsules will be taken weekly for a maximum of 24 weeks
10
Total141

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005
Overall StudyAdverse Event520010
Overall StudyAESI101010
Overall StudyDiscontinuation criteria per protocol001001
Overall StudyLost to Follow-up011101
Overall StudyProtocol Violation010000
Overall Studysponsor/ICON decision001000
Overall StudyWithdrawal by Subject322222

Baseline characteristics

CharacteristicBGS649 0.1 mgTotalPlacebo to BGS649 1.0 mgPlacebo to BGS649 0.3 mgPlacebo to BGS649 0.1 mgBGS649 1.0 mgBGS649 0.3 mg
Age, Continuous52.2 years
STANDARD_DEVIATION 7.34
51.0 years
STANDARD_DEVIATION 8.6
51.1 years
STANDARD_DEVIATION 8.32
49.8 years
STANDARD_DEVIATION 8.93
48.9 years
STANDARD_DEVIATION 11.04
50.0 years
STANDARD_DEVIATION 9.98
51.9 years
STANDARD_DEVIATION 7.76
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants2 Participants0 Participants0 Participants0 Participants2 Participants0 Participants
Race (NIH/OMB)
Black or African American
8 Participants29 Participants2 Participants1 Participants1 Participants9 Participants8 Participants
Race (NIH/OMB)
More than one race
0 Participants3 Participants0 Participants0 Participants1 Participants0 Participants2 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants0 Participants1 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
30 Participants106 Participants8 Participants15 Participants11 Participants19 Participants23 Participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Male
38 Participants141 Participants10 Participants17 Participants13 Participants30 Participants33 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 / 381 / 330 / 300 / 130 / 170 / 10
other
Total, other adverse events
27 / 3823 / 3325 / 3010 / 1312 / 176 / 10
serious
Total, serious adverse events
1 / 382 / 331 / 300 / 130 / 170 / 10

Outcome results

Primary

Percent Change in Bone Mineral Density Measured by DEXA (g/cm^2) From Baseline in Study MBGS205 to Week 48 in Study MBGS206

Percentage change in lumbar bone mineral density measured by DEXA (g/cm\^2) from Baseline in Study MBGS205 to Week 48 in Study MBGS206 by dose group in participants randomised to active treatment in MBGS205.

Time frame: At 48 weeks compared to baseline in MBGS205

Population: The Intention-to-treat (ITT) population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine bone mineral density (BMD) measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
BGS649 0.1 mgPercent Change in Bone Mineral Density Measured by DEXA (g/cm^2) From Baseline in Study MBGS205 to Week 48 in Study MBGS206-2.24 Percentage changeStandard Deviation 3.157
BGS649 0.3 mgPercent Change in Bone Mineral Density Measured by DEXA (g/cm^2) From Baseline in Study MBGS205 to Week 48 in Study MBGS206-3.31 Percentage changeStandard Deviation 5.301
BGS649 1.0 mgPercent Change in Bone Mineral Density Measured by DEXA (g/cm^2) From Baseline in Study MBGS205 to Week 48 in Study MBGS206-1.68 Percentage changeStandard Deviation 3.095
Secondary

Analysis of Proportion of Subjects That Overshoot Testosterone for Subjects Randomised to Active Treatment in Study MBGS205

Proportion of subjects that overshoot testosterone (total testosterone above 1000 ng/dl \[35 nmol/L\], from first dose of study drug in Study MBGS205 until study completion)

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
BGS649 0.1 mgAnalysis of Proportion of Subjects That Overshoot Testosterone for Subjects Randomised to Active Treatment in Study MBGS2050 Participants
BGS649 0.3 mgAnalysis of Proportion of Subjects That Overshoot Testosterone for Subjects Randomised to Active Treatment in Study MBGS2050 Participants
BGS649 1.0 mgAnalysis of Proportion of Subjects That Overshoot Testosterone for Subjects Randomised to Active Treatment in Study MBGS2052 Participants
Secondary

Change From Baseline in Blood Pressure From Baseline to Week 48MBGS205

Change from baseline in blood pressure (systolic and diastolic measured in mmHg) Baseline in Study MBGS205 to Week 48 in Study MBGS206.

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureGroupValue (MEAN)Dispersion
BGS649 0.1 mgChange From Baseline in Blood Pressure From Baseline to Week 48MBGS205Systolic Blood Pressure2.7 Blood Pressure (mmHg) (Change)Standard Deviation 7.13
BGS649 0.1 mgChange From Baseline in Blood Pressure From Baseline to Week 48MBGS205Diastolic Blood Pressure-0.2 Blood Pressure (mmHg) (Change)Standard Deviation 8.12
BGS649 0.3 mgChange From Baseline in Blood Pressure From Baseline to Week 48MBGS205Systolic Blood Pressure2.6 Blood Pressure (mmHg) (Change)Standard Deviation 12.64
BGS649 0.3 mgChange From Baseline in Blood Pressure From Baseline to Week 48MBGS205Diastolic Blood Pressure1.1 Blood Pressure (mmHg) (Change)Standard Deviation 4.41
BGS649 1.0 mgChange From Baseline in Blood Pressure From Baseline to Week 48MBGS205Systolic Blood Pressure-0.7 Blood Pressure (mmHg) (Change)Standard Deviation 8.34
BGS649 1.0 mgChange From Baseline in Blood Pressure From Baseline to Week 48MBGS205Diastolic Blood Pressure1.6 Blood Pressure (mmHg) (Change)Standard Deviation 8.3
Secondary

Change From Baseline in Follicle Stimulating Hormone at Week 48

Change from Baseline in Study MBGS205 to Week 48 in Study MBGS206 in follicle stimulating hormone (FSH).

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
BGS649 0.1 mgChange From Baseline in Follicle Stimulating Hormone at Week 485.473 Follicle Stimulating Hormone (mIU/mL)Standard Deviation 2.9494
BGS649 0.3 mgChange From Baseline in Follicle Stimulating Hormone at Week 487.509 Follicle Stimulating Hormone (mIU/mL)Standard Deviation 3.0235
BGS649 1.0 mgChange From Baseline in Follicle Stimulating Hormone at Week 486.781 Follicle Stimulating Hormone (mIU/mL)Standard Deviation 5.2389
Secondary

Change From Baseline in Free and Bioavailable Testosterone

Change from baseline in free and bioavailable (total) testosterone from baseline in Study MBGS205 to Week 48 in Study MBGS206.

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureGroupValue (MEAN)Dispersion
BGS649 0.1 mgChange From Baseline in Free and Bioavailable TestosteroneBioavailable Testosterone (ng/dL)162.12 (ng/dL) and (ng/L), respectivelyStandard Deviation 70.686
BGS649 0.1 mgChange From Baseline in Free and Bioavailable TestosteroneTestosterone, Free (ng/L)60.28 (ng/dL) and (ng/L), respectivelyStandard Deviation 25.02
BGS649 0.3 mgChange From Baseline in Free and Bioavailable TestosteroneBioavailable Testosterone (ng/dL)191.23 (ng/dL) and (ng/L), respectivelyStandard Deviation 76.431
BGS649 0.3 mgChange From Baseline in Free and Bioavailable TestosteroneTestosterone, Free (ng/L)72.65 (ng/dL) and (ng/L), respectivelyStandard Deviation 26.674
BGS649 1.0 mgChange From Baseline in Free and Bioavailable TestosteroneBioavailable Testosterone (ng/dL)255.57 (ng/dL) and (ng/L), respectivelyStandard Deviation 103.758
BGS649 1.0 mgChange From Baseline in Free and Bioavailable TestosteroneTestosterone, Free (ng/L)94.82 (ng/dL) and (ng/L), respectivelyStandard Deviation 35.674
Placebo to BGS649 0.1 mgChange From Baseline in Free and Bioavailable TestosteroneBioavailable Testosterone (ng/dL)168.71 (ng/dL) and (ng/L), respectivelyStandard Deviation 111.634
Placebo to BGS649 0.1 mgChange From Baseline in Free and Bioavailable TestosteroneTestosterone, Free (ng/L)61.01 (ng/dL) and (ng/L), respectivelyStandard Deviation 40.632
Placebo to BGS649 0.3 mgChange From Baseline in Free and Bioavailable TestosteroneBioavailable Testosterone (ng/dL)240.25 (ng/dL) and (ng/L), respectivelyStandard Deviation 111.842
Placebo to BGS649 0.3 mgChange From Baseline in Free and Bioavailable TestosteroneTestosterone, Free (ng/L)84.62 (ng/dL) and (ng/L), respectivelyStandard Deviation 38.353
Placebo to BGS649 1.0 mgChange From Baseline in Free and Bioavailable TestosteroneBioavailable Testosterone (ng/dL)255.27 (ng/dL) and (ng/L), respectivelyStandard Deviation 111.674
Placebo to BGS649 1.0 mgChange From Baseline in Free and Bioavailable TestosteroneTestosterone, Free (ng/L)90.47 (ng/dL) and (ng/L), respectivelyStandard Deviation 37.064
Secondary

Change From Baseline in Haematocrit at Week 48

Change from baseline in haematocrit from Baseline in Study MBGS205 to Week 48 in Study MBGS206

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
BGS649 0.1 mgChange From Baseline in Haematocrit at Week 480.0128 RATIO (Change)Standard Deviation 0.02273
BGS649 0.3 mgChange From Baseline in Haematocrit at Week 480.0136 RATIO (Change)Standard Deviation 0.02517
BGS649 1.0 mgChange From Baseline in Haematocrit at Week 480.0286 RATIO (Change)Standard Deviation 0.0341
Secondary

Change From Baseline in Luteinizing Hormone From Baseline to Week 48

Change from baseline of LH from Baseline in Study MBGS205 to Week 48 in Study MBGS206.

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
BGS649 0.1 mgChange From Baseline in Luteinizing Hormone From Baseline to Week 482.683 Luteinizing Hormone (mIU/mL)Standard Deviation 1.6586
BGS649 0.3 mgChange From Baseline in Luteinizing Hormone From Baseline to Week 483.665 Luteinizing Hormone (mIU/mL)Standard Deviation 2.3477
BGS649 1.0 mgChange From Baseline in Luteinizing Hormone From Baseline to Week 483.613 Luteinizing Hormone (mIU/mL)Standard Deviation 2.7807
Placebo to BGS649 0.1 mgChange From Baseline in Luteinizing Hormone From Baseline to Week 483.973 Luteinizing Hormone (mIU/mL)Standard Deviation 4.142
Placebo to BGS649 0.3 mgChange From Baseline in Luteinizing Hormone From Baseline to Week 484.834 Luteinizing Hormone (mIU/mL)Standard Deviation 3.193
Placebo to BGS649 1.0 mgChange From Baseline in Luteinizing Hormone From Baseline to Week 482.720 Luteinizing Hormone (mIU/mL)Standard Deviation 0.5071
Secondary

Change From Baseline in PSA From Baseline in Study MBGS205 to Week 48 in Study MBGS206

Summary of Laboratory Test Results and Change from Baseline: PSA for Subjects Randomised to Active Treatment in Study MBGS205

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
BGS649 0.1 mgChange From Baseline in PSA From Baseline in Study MBGS205 to Week 48 in Study MBGS2060.163 Prostate Specific Antigen (ug/L)Standard Deviation 0.2454
BGS649 0.3 mgChange From Baseline in PSA From Baseline in Study MBGS205 to Week 48 in Study MBGS2060.164 Prostate Specific Antigen (ug/L)Standard Deviation 0.641
BGS649 1.0 mgChange From Baseline in PSA From Baseline in Study MBGS205 to Week 48 in Study MBGS2060.169 Prostate Specific Antigen (ug/L)Standard Deviation 0.6246
Secondary

Change From Baseline of Oestradiol (Absolute) From Baseline in Study MBGS205 to Week 48

Descriptive Summary of Oestradiol and Testosterone/Oestradiol Ratio for Subjects Randomised to Active Treatment in Study MBGS205

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
BGS649 0.1 mgChange From Baseline of Oestradiol (Absolute) From Baseline in Study MBGS205 to Week 48-12.750 Oestradiol (pg/mL)Standard Deviation 13.4264
BGS649 0.3 mgChange From Baseline of Oestradiol (Absolute) From Baseline in Study MBGS205 to Week 48-11.852 Oestradiol (pg/mL)Standard Deviation 5.682
BGS649 1.0 mgChange From Baseline of Oestradiol (Absolute) From Baseline in Study MBGS205 to Week 48-12.917 Oestradiol (pg/mL)Standard Deviation 9.0117
Secondary

Change From Baseline of Oestradiol (Percentage) From Baseline in Study MBGS205 to Week 48

Descriptive Summary of Percentage Change in Oestradiol and Testosterone/Oestradiol Ratio for Subjects Randomised to Active Treatment in Study MBGS205

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
BGS649 0.1 mgChange From Baseline of Oestradiol (Percentage) From Baseline in Study MBGS205 to Week 48-39.54 percentage from baseline at Week 48Standard Deviation 33.295
BGS649 0.3 mgChange From Baseline of Oestradiol (Percentage) From Baseline in Study MBGS205 to Week 48-47.00 percentage from baseline at Week 48Standard Deviation 17.852
BGS649 1.0 mgChange From Baseline of Oestradiol (Percentage) From Baseline in Study MBGS205 to Week 48-48.30 percentage from baseline at Week 48Standard Deviation 19.752
Secondary

Descriptive Summary of Percentage Change in Bone Turnover Markers for Subjects Randomised to Active Treatment in Study MBGS205

Percentage change from baseline in bone turnover markers (C-terminal telopeptide \[CTx1\], osteocalcin, bone alkaline phosphatase, and procollagen type 1 N-propeptide \[P1NP\]) from Baseline in Study MBGS205 to Week 48 in Study MBGS206

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureGroupValue (MEAN)Dispersion
BGS649 0.1 mgDescriptive Summary of Percentage Change in Bone Turnover Markers for Subjects Randomised to Active Treatment in Study MBGS205Procollagen 1 N-Terminal Propeptide40.40 ug/LStandard Deviation 32.108
BGS649 0.1 mgDescriptive Summary of Percentage Change in Bone Turnover Markers for Subjects Randomised to Active Treatment in Study MBGS2052Type I Collagen C-Telopeptides83.28 ug/LStandard Deviation 164.647
BGS649 0.1 mgDescriptive Summary of Percentage Change in Bone Turnover Markers for Subjects Randomised to Active Treatment in Study MBGS205Osteocalcin13.79 ug/LStandard Deviation 17.525
BGS649 0.3 mgDescriptive Summary of Percentage Change in Bone Turnover Markers for Subjects Randomised to Active Treatment in Study MBGS205Procollagen 1 N-Terminal Propeptide37.62 ug/LStandard Deviation 44.742
BGS649 0.3 mgDescriptive Summary of Percentage Change in Bone Turnover Markers for Subjects Randomised to Active Treatment in Study MBGS2052Type I Collagen C-Telopeptides64.42 ug/LStandard Deviation 64.473
BGS649 0.3 mgDescriptive Summary of Percentage Change in Bone Turnover Markers for Subjects Randomised to Active Treatment in Study MBGS205Osteocalcin18.86 ug/LStandard Deviation 28.545
BGS649 1.0 mgDescriptive Summary of Percentage Change in Bone Turnover Markers for Subjects Randomised to Active Treatment in Study MBGS2052Type I Collagen C-Telopeptides57.91 ug/LStandard Deviation 82.289
BGS649 1.0 mgDescriptive Summary of Percentage Change in Bone Turnover Markers for Subjects Randomised to Active Treatment in Study MBGS205Osteocalcin15.28 ug/LStandard Deviation 25.98
BGS649 1.0 mgDescriptive Summary of Percentage Change in Bone Turnover Markers for Subjects Randomised to Active Treatment in Study MBGS205Procollagen 1 N-Terminal Propeptide34.17 ug/LStandard Deviation 35.017
Secondary

Descriptive Summary of Total Testosterone (ng/dL) for Subjects Randomised to Active Treatment in Study MBGS205

Change from baseline in total, free and bioavailable testosterone from Baseline in Study MBGS205 to Week 48 in Study MBGS206

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
BGS649 0.1 mgDescriptive Summary of Total Testosterone (ng/dL) for Subjects Randomised to Active Treatment in Study MBGS205241.0 Total Testosterone (ng/dL) ChangeStandard Deviation 99.14
BGS649 0.3 mgDescriptive Summary of Total Testosterone (ng/dL) for Subjects Randomised to Active Treatment in Study MBGS205290.6 Total Testosterone (ng/dL) ChangeStandard Deviation 109.64
BGS649 1.0 mgDescriptive Summary of Total Testosterone (ng/dL) for Subjects Randomised to Active Treatment in Study MBGS205378.9 Total Testosterone (ng/dL) ChangeStandard Deviation 158.67
Secondary

Percentage Change From Baseline in Bone Mineral Density by Location and Vitamin D Deficiency

Percentage change from baseline in bone density and bone biomarkers for vitamin D deficiency from Baseline in Study MBGS205 to Week 48 in Study MBGS206. Bone mineral density (g/cm\^2) measured by DEXA over-read by a central reader.

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure and Number analyzed is the number of participants evaluated for each location.

ArmMeasureGroupValue (MEAN)Dispersion
BGS649 0.1 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Femoral Neck) (g/cm2)-1.93 percentage change from baseline in DEXAStandard Deviation 5.743
BGS649 0.1 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Hip) (g/cm2)-0.86 percentage change from baseline in DEXAStandard Deviation 3.129
BGS649 0.1 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Lumbar Spine) (g/cm2)-2.10 percentage change from baseline in DEXAStandard Deviation 3.623
BGS649 0.3 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Femoral Neck) (g/cm2)-2.27 percentage change from baseline in DEXAStandard Deviation 6.739
BGS649 0.3 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Hip) (g/cm2)-1.81 percentage change from baseline in DEXAStandard Deviation 3.684
BGS649 0.3 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Lumbar Spine) (g/cm2)-3.86 percentage change from baseline in DEXAStandard Deviation 5.966
BGS649 1.0 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Femoral Neck) (g/cm2)0.19 percentage change from baseline in DEXAStandard Deviation 5.161
BGS649 1.0 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Hip) (g/cm2)1.22 percentage change from baseline in DEXAStandard Deviation 4.532
BGS649 1.0 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Lumbar Spine) (g/cm2)-2.01 percentage change from baseline in DEXAStandard Deviation 3.52
Placebo to BGS649 0.1 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Femoral Neck) (g/cm2)-0.56 percentage change from baseline in DEXAStandard Deviation 4.485
Placebo to BGS649 0.1 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Hip) (g/cm2)-0.78 percentage change from baseline in DEXAStandard Deviation 3.91
Placebo to BGS649 0.1 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Lumbar Spine) (g/cm2)1.54 percentage change from baseline in DEXAStandard Deviation 4.463
Placebo to BGS649 0.3 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Femoral Neck) (g/cm2)0.16 percentage change from baseline in DEXAStandard Deviation 2.64
Placebo to BGS649 0.3 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Hip) (g/cm2)0.09 percentage change from baseline in DEXAStandard Deviation 1.497
Placebo to BGS649 0.3 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Lumbar Spine) (g/cm2)-0.08 percentage change from baseline in DEXAStandard Deviation 2.017
Placebo to BGS649 1.0 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Hip) (g/cm2)4.36 percentage change from baseline in DEXA
Placebo to BGS649 1.0 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Lumbar Spine) (g/cm2)-3.12 percentage change from baseline in DEXAStandard Deviation 1.691
Placebo to BGS649 1.0 mgPercentage Change From Baseline in Bone Mineral Density by Location and Vitamin D DeficiencyBone Density (Femoral Neck) (g/cm2)3.02 percentage change from baseline in DEXA
Secondary

Percentage Change From Baseline in DEXA Scan Density (g/cm^2) by Location for Subjects Randomised to Active Treatment in Study MBGS205 (Over-read)

Percentage change from baseline in hip (total and femoral neck) bone mineral density measured by DEXA (g/cm\^2) from Baseline in Study MBGS205 to Week 48 in Study MBGS206

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureGroupValue (MEAN)Dispersion
BGS649 0.1 mgPercentage Change From Baseline in DEXA Scan Density (g/cm^2) by Location for Subjects Randomised to Active Treatment in Study MBGS205 (Over-read)Bone Density (Femoral Neck)-1.09 percentage of changeStandard Deviation 5.205
BGS649 0.1 mgPercentage Change From Baseline in DEXA Scan Density (g/cm^2) by Location for Subjects Randomised to Active Treatment in Study MBGS205 (Over-read)Bone Density (Hip)0.01 percentage of changeStandard Deviation 3.407
BGS649 0.1 mgPercentage Change From Baseline in DEXA Scan Density (g/cm^2) by Location for Subjects Randomised to Active Treatment in Study MBGS205 (Over-read)Bone Density (Lumbar Spine)-1.94 percentage of changeStandard Deviation 3.378
BGS649 0.3 mgPercentage Change From Baseline in DEXA Scan Density (g/cm^2) by Location for Subjects Randomised to Active Treatment in Study MBGS205 (Over-read)Bone Density (Femoral Neck)-2.60 percentage of changeStandard Deviation 6.899
BGS649 0.3 mgPercentage Change From Baseline in DEXA Scan Density (g/cm^2) by Location for Subjects Randomised to Active Treatment in Study MBGS205 (Over-read)Bone Density (Hip)-1.71 percentage of changeStandard Deviation 3.59
BGS649 0.3 mgPercentage Change From Baseline in DEXA Scan Density (g/cm^2) by Location for Subjects Randomised to Active Treatment in Study MBGS205 (Over-read)Bone Density (Lumbar Spine)-3.31 percentage of changeStandard Deviation 5.301
BGS649 1.0 mgPercentage Change From Baseline in DEXA Scan Density (g/cm^2) by Location for Subjects Randomised to Active Treatment in Study MBGS205 (Over-read)Bone Density (Hip)0.61 percentage of changeStandard Deviation 4.304
BGS649 1.0 mgPercentage Change From Baseline in DEXA Scan Density (g/cm^2) by Location for Subjects Randomised to Active Treatment in Study MBGS205 (Over-read)Bone Density (Lumbar Spine)-1.99 percentage of changeStandard Deviation 3.159
BGS649 1.0 mgPercentage Change From Baseline in DEXA Scan Density (g/cm^2) by Location for Subjects Randomised to Active Treatment in Study MBGS205 (Over-read)Bone Density (Femoral Neck)-0.15 percentage of changeStandard Deviation 5.155
Secondary

Percentage Change in Bone Alkaline Phosphatase

Percentage change in baseline in alkaline phosphatase from baseline in study MBGS205 to week 48 in MBGS206.

Time frame: 48 weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
BGS649 0.1 mgPercentage Change in Bone Alkaline Phosphatase12.67 U/LStandard Deviation 16.025
BGS649 0.3 mgPercentage Change in Bone Alkaline Phosphatase3.85 U/LStandard Deviation 17.856
BGS649 1.0 mgPercentage Change in Bone Alkaline Phosphatase15.28 U/LStandard Deviation 5.82
Placebo to BGS649 0.1 mgPercentage Change in Bone Alkaline Phosphatase14.46 U/LStandard Deviation 22.493
Placebo to BGS649 0.3 mgPercentage Change in Bone Alkaline Phosphatase-3.40 U/LStandard Deviation 16.672
Placebo to BGS649 1.0 mgPercentage Change in Bone Alkaline Phosphatase3.80 U/LStandard Deviation 13.025
Secondary

Percentage of Subjects Achieving Normalisation of Bioavailable (Total) Testosterone at Wk 48

Percentage of subjects where bioavailable testosterone was normalised at week 48 in Study MBGS206. Where normalisation was considered testosterone in the range 300-1000 mg/dL.

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
BGS649 0.1 mgPercentage of Subjects Achieving Normalisation of Bioavailable (Total) Testosterone at Wk 4825 Participants
BGS649 0.3 mgPercentage of Subjects Achieving Normalisation of Bioavailable (Total) Testosterone at Wk 4817 Participants
BGS649 1.0 mgPercentage of Subjects Achieving Normalisation of Bioavailable (Total) Testosterone at Wk 4819 Participants
Placebo to BGS649 0.1 mgPercentage of Subjects Achieving Normalisation of Bioavailable (Total) Testosterone at Wk 486 Participants
Placebo to BGS649 0.3 mgPercentage of Subjects Achieving Normalisation of Bioavailable (Total) Testosterone at Wk 4811 Participants
Placebo to BGS649 1.0 mgPercentage of Subjects Achieving Normalisation of Bioavailable (Total) Testosterone at Wk 485 Participants
Secondary

Percentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by Location

Proportion of subjects with DEXA scan T- scores ≤ -2.5 at Week 48 in MBGS206 compared to baseline in MBGS205 by body location (using overread scan images).

Time frame: 48 Weeks

Population: The ITT population included all participants who: were randomised, and received at least 1 dose of study medication, and provided a Baseline lumbar spine BMD measure in MBGS205 and at least one available evaluation of lumbar spine post-Baseline in MBGS206. Here, the Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure and Number analyzed is the number of participants evaluated for each location.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
BGS649 0.1 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Femoral Neck) ≤ -2.50 Participants
BGS649 0.1 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Hip) ≤ -2.50 Participants
BGS649 0.1 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Lumbar Spine) ≤ -2.50 Participants
BGS649 0.3 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Femoral Neck) ≤ -2.50 Participants
BGS649 0.3 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Hip) ≤ -2.50 Participants
BGS649 0.3 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Lumbar Spine) ≤ -2.50 Participants
BGS649 1.0 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Femoral Neck) ≤ -2.50 Participants
BGS649 1.0 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Hip) ≤ -2.50 Participants
BGS649 1.0 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Lumbar Spine) ≤ -2.50 Participants
Placebo to BGS649 0.1 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Femoral Neck) ≤ -2.50 Participants
Placebo to BGS649 0.1 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Hip) ≤ -2.50 Participants
Placebo to BGS649 0.1 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Lumbar Spine) ≤ -2.50 Participants
Placebo to BGS649 0.3 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Femoral Neck) ≤ -2.50 Participants
Placebo to BGS649 0.3 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Hip) ≤ -2.50 Participants
Placebo to BGS649 0.3 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Lumbar Spine) ≤ -2.50 Participants
Placebo to BGS649 1.0 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Hip) ≤ -2.50 Participants
Placebo to BGS649 1.0 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Lumbar Spine) ≤ -2.50 Participants
Placebo to BGS649 1.0 mgPercentage of Subjects With DEXA Scan T-score ≤ -2.5 at Week 48 by LocationT - Score (Femoral Neck) ≤ -2.50 Participants

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