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NCT02730169

Safety and Efficacy of BGS649 in Male Obese Subjects With Hypogonadotropic Hypogonadism

Completed Phase 2 Results posted Last updated 14 September 2022
What this trial tests

Phase 2 trial testing BGS649 in Hypogonadotropic Hypogonadism in 271 participants. Completed in 19 May 2018.

Timeline
12 May 2016
Primary endpoint
15 February 2018
19 May 2018

Quick facts

Lead sponsorMereo BioPharma
PhasePhase 2
StatusCompleted
Study typeINTERVENTIONAL
Allocationrandomized
Designparallel
Maskingdouble
Primary purposetreatment
Enrollment271
Start date12 May 2016
Primary completion15 February 2018
Estimated completion19 May 2018
Sites63 locations across Italy, United Kingdom, United States, Spain

Drugs / interventions tested

Conditions studied

Sponsor

Mereo BioPharma — full company profile →

Who can join

Adults 18 to 65, male only, with Hypogonadotropic Hypogonadism. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Percentage of Patients With Normalised Testosterone After 24 Weeks of Study Treatment Primary · 24 weeks of treatment

Percentage of patients with normalised testosterone i.e. testosterone in the range 300-1000ng/dL after 24 weeks of study treatment. The primary objective was considered met, if greater than or equal to 75% of the participants in any arm normalised.

GroupValue95% CI
BGS649 0.1 mg59
BGS649 0.3 mg62
BGS649 1.0 mg63
Placebo7
The Proportion of Subjects That Have Normalization of Total Testosterone Serum Concentrations From Baseline to Week 24 Secondary · Baseline, Day 8, 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks

Normalised total testosterone level was defined as between 300-1000 ng/dL (10.4-35 nmol/L) inclusive. Levels \>1000 ng/dL were considered super-physiological outside the normal range.

Baseline
GroupValue95% CI
BGS649 0.1 mg7
BGS649 0.3 mg12
BGS649 1.0 mg11
Placebo7
Visit 2 (Day 8)
GroupValue95% CI
BGS649 0.1 mg54
BGS649 0.3 mg53
BGS649 1.0 mg57
Placebo7
Visit 3 (Week 4)
GroupValue95% CI
BGS649 0.1 mg63
BGS649 0.3 mg62
BGS649 1.0 mg64
Placebo10
Visit 4 (Week 8)
GroupValue95% CI
BGS649 0.1 mg63
BGS649 0.3 mg61
BGS649 1.0 mg65
Placebo11
Visit 5 (Week 12)
GroupValue95% CI
BGS649 0.1 mg58
BGS649 0.3 mg62
BGS649 1.0 mg64
Placebo7
Visit 6 (Week 16)
GroupValue95% CI
BGS649 0.1 mg57
BGS649 0.3 mg63
BGS649 1.0 mg63
Placebo8
Visit 7 (Week 20)
GroupValue95% CI
BGS649 0.1 mg57
BGS649 0.3 mg63
BGS649 1.0 mg66
Placebo9
Visit 8 (Week 24)
GroupValue95% CI
BGS649 0.1 mg59
BGS649 0.3 mg62
BGS649 1.0 mg63
Placebo7
Proportion of Subjects That Overshoot Testosterone (Total Testosterone Above 1000 ng/dL [35 Nmol/L]) From Baseline to Week 24 Secondary · Baseline, Day 8, 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks

Testosterone overshoot was defined as total testosterone above 1000 ng/dL (35 nmol/L). Samples were collected in the morning before 11 am pre dose.

Baseline
GroupValue95% CI
BGS649 0.1 mg0
BGS649 0.3 mg0
BGS649 1.0 mg0
Placebo0
Visit 2 (Day 8)
GroupValue95% CI
BGS649 0.1 mg0
BGS649 0.3 mg0
BGS649 1.0 mg0
Placebo0
Visit 3 (Week 4)
GroupValue95% CI
BGS649 0.1 mg0
BGS649 0.3 mg0
BGS649 1.0 mg0
Placebo0
Visit 4 (Week 8)
GroupValue95% CI
BGS649 0.1 mg0
BGS649 0.3 mg0
BGS649 1.0 mg1
Placebo0
Visit 5 (Week 12)
GroupValue95% CI
BGS649 0.1 mg0
BGS649 0.3 mg0
BGS649 1.0 mg2
Placebo2
Visit 6 (Week 16)
GroupValue95% CI
BGS649 0.1 mg0
BGS649 0.3 mg0
BGS649 1.0 mg2
Placebo1
Visit 7 (Week 20)
GroupValue95% CI
BGS649 0.1 mg0
BGS649 0.3 mg0
BGS649 1.0 mg0
Placebo1
Visit 8 (Week 24)
GroupValue95% CI
BGS649 0.1 mg0
BGS649 0.3 mg0
BGS649 1.0 mg1
Placebo0
Normalization of Total Testosterone Serum Concentrations in ≥ 90% Subjects After 24 Weeks of Treatment. Secondary · 24 weeks of treatment

Normalized total testosterone level was defined as between 300-1000 ng/dL (10.4-35 nmol/L) inclusive. Levels \>1000 ng/dL were considered super-physiological outside the normal range. This secondary outcome measure was considered to have been met for a dose if ≥ 90% of subjects in the intent-to-treat (ITT) population had normalisation of total testosterone levels at Week 24.

GroupValue95% CI
BGS649 0.1 mg59
BGS649 0.3 mg62
BGS649 1.0 mg63
Placebo7
Mean (SD) Change From Baseline in Luteinizing Hormone (LH) to Week 24. Secondary · Day 8, 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks

LH was measured at screening, baseline. The Baseline was defined as the last non-missing value collected before the first study treatment administration, including unscheduled assessments.

Visit 2 (Day 8)
GroupValue95% CI
BGS649 0.1 mg1.680± 1.7503
BGS649 0.3 mg2.095± 1.3719
BGS649 1.0 mg3.309± 1.8200
Placebo-0.183± 1.3531
Visit 3 (Week 4)
GroupValue95% CI
BGS649 0.1 mg2.237± 2.1982
BGS649 0.3 mg3.626± 2.6519
BGS649 1.0 mg5.235± 4.8684
Placebo-0.385± 1.2423
Visit 4 (Week 8)
GroupValue95% CI
BGS649 0.1 mg2.272± 2.1908
BGS649 0.3 mg3.653± 3.0907
BGS649 1.0 mg5.676± 4.1471
Placebo-0.169± 1.5237
Visit 5 (Week 12)
GroupValue95% CI
BGS649 0.1 mg2.503± 2.2230
BGS649 0.3 mg3.511± 3.7050
BGS649 1.0 mg5.064± 3.9739
Placebo-0.341± 1.4575
Visit 6 (Week 16)
GroupValue95% CI
BGS649 0.1 mg2.557± 1.6964
BGS649 0.3 mg3.704± 3.6269
BGS649 1.0 mg5.004± 4.3397
Placebo-0.395± 1.4793
Visit 7 (Week 20)
GroupValue95% CI
BGS649 0.1 mg2.553± 2.2380
BGS649 0.3 mg3.653± 3.7381
BGS649 1.0 mg4.884± 3.9297
Placebo-0.193± 1.3585
Visit 8 (Week 24)
GroupValue95% CI
BGS649 0.1 mg2.108± 1.9892
BGS649 0.3 mg3.560± 3.6138
BGS649 1.0 mg5.209± 4.4894
Placebo-0.043± 1.5575
Mean (SD) Change From Baseline in Follicle Stimulating Hormone (FSH) to Week 24. Secondary · Day 8, 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks

FSH was measured at baseline, Visit 1 through 8 and follow-up. Baseline was defined as the last non-missing value collected before the first study treatment administration, including unscheduled assessments.

Visit 2 (Day 8)
GroupValue95% CI
BGS649 0.1 mg3.553± 2.2022
BGS649 0.3 mg4.575± 2.0756
BGS649 1.0 mg5.307± 2.8315
Placebo-0.51± 0.8273
Visit 3 (Week 4)
GroupValue95% CI
BGS649 0.1 mg4.158± 2.1353
BGS649 0.3 mg5.540± 2.8344
BGS649 1.0 mg6.551± 4.2155
Placebo-0.111± 1.0638
Visit 4 (Week 8)
GroupValue95% CI
BGS649 0.1 mg4.318± 2.4147
BGS649 0.3 mg5.878± 2.9916
BGS649 1.0 mg7.620± 4.7883
Placebo0.047± 1.2241
Visit 5 (Week 12)
GroupValue95% CI
BGS649 0.1 mg4.809± 2.5582
BGS649 0.3 mg5.768± 3.2474
BGS649 1.0 mg8.132± 5.9526
Placebo-0.075± 1.0723
Visit 6 (Week 16)
GroupValue95% CI
BGS649 0.1 mg5.188± 2.6876
BGS649 0.3 mg6.350± 3.4261
BGS649 1.0 mg8.045± 6.1773
Placebo-0.165± 1.1924
Visit 7 (Week 20)
GroupValue95% CI
BGS649 0.1 mg5.059± 2.5714
BGS649 0.3 mg6.073± 3.5199
BGS649 1.0 mg8.409± 6.6502
Placebo-0.030± 1.0932
Visit 8 (Week 24)
GroupValue95% CI
BGS649 0.1 mg4.836± 2.6901
BGS649 0.3 mg6.183± 3.4817
BGS649 1.0 mg8.282± 7.0523
Placebo0.038± 1.2164
Descriptive Summary (Geometric Mean [95% CI]) of BGS649 Plasma PK Concentration Values to 24 Weeks. Secondary · Week 12 (pre-dose and 1 hour post-dose), week 24 and week 24/End of treatment

Plasma PK sampling for BGS649 was performed at Weeks 12 and 24. BGS649 PK plasma concentrations were summarised for the PK population by descriptive statistics.

Visit 5 (Week 12), Pre-Dose
GroupValue95% CI
BGS649 0.1 mg0.730.64 – 0.83
BGS649 0.3 mg2.552.33 – 2.80
BGS649 1.0 mg8.938.29 – 9.62
Visit 5 (Week 12), 1 hour Post-Dose
GroupValue95% CI
BGS649 0.1 mg1.431.24 – 1.65
BGS649 0.3 mg4.393.89 – 4.97
BGS649 1.0 mg14.9113.52 – 16.45
Visit 8 (Week 24)
GroupValue95% CI
BGS649 0.1 mg0.850.72 – 1.00
BGS649 0.3 mg2.972.20 – 4.00
BGS649 1.0 mg10.048.23 – 12.25
Visit 8 (Week 24)/End of Treatment
GroupValue95% CI
BGS649 0.1 mg0.780.64 – 0.97
BGS649 0.3 mg2.762.14 – 3.57
BGS649 1.0 mg9.107.61 – 10.89
Descriptive Summary (Geometric Mean [95% CI]) of BGS649 Semen PK Concentration Values at 24 Weeks. Secondary · Week 24 and week 24/End of treatment

Semen PK sampling for BGS649 was performed at Visit 8 (End of Treatment). BGS649 PK semen concentrations were summarised for the PK population by descriptive statistics.

Visit 8 (Week 24)
GroupValue95% CI
BGS649 0.1 mg0.510.43 – 0.61
BGS649 0.3 mg1.951.60 – 2.38
BGS649 1.0 mg5.814.63 – 7.28
Visit 8 (Week 24)/End of Treatment
GroupValue95% CI
BGS649 0.1 mg0.490.42 – 0.58
BGS649 0.3 mg1.581.19 – 2.08
BGS649 1.0 mg5.284.16 – 6.71
Mean (SD) Change From Baseline in Prostate Specific Antigen (PSA) to Week 24. Secondary · Baseline, Day 8, 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks

PSA was measured alongside other clinical chemistry parameters at screening, baseline, Visits 1 through 8 and at follow-up.

Visit 2 (Day 8)
GroupValue95% CI
BGS649 0.1 mg0.045± 0.1840
BGS649 0.3 mg0.040± 0.4830
BGS649 1.0 mg0.011± 0.4606
Placebo0.015± 0.2179
Visit 3 (Week 4)
GroupValue95% CI
BGS649 0.1 mg0.141± 0.1742
BGS649 0.3 mg0.082± 0.5198
BGS649 1.0 mg0.092± 0.4338
Placebo0.038± 0.2700
Visit 4 (Week 8)
GroupValue95% CI
BGS649 0.1 mg0.166± 0.2651
BGS649 0.3 mg0.105± 0.4747
BGS649 1.0 mg0.132± 0.3343
Placebo0.055± 0.4500
Visit 5 (Week 12)
GroupValue95% CI
BGS649 0.1 mg0.190± 0.3895
BGS649 0.3 mg0.271± 0.9626
BGS649 1.0 mg0.178± 0.5405
Placebo0.039± 0.4382
Visit 6 (Week 16)
GroupValue95% CI
BGS649 0.1 mg0.147± 0.2655
BGS649 0.3 mg0.102± 0.5500
BGS649 1.0 mg0.160± 0.4037
Placebo0.016± 0.2631
Visit 7 (Week 20)
GroupValue95% CI
BGS649 0.1 mg0.158± 0.2913
BGS649 0.3 mg0.480± 2.6029
BGS649 1.0 mg0.116± 0.4560
Placebo0.022± 0.3942
Visit 8 (Week 24)
GroupValue95% CI
BGS649 0.1 mg0.218± 0.4312
BGS649 0.3 mg0.391± 1.8627
BGS649 1.0 mg0.085± 0.2930
Placebo0.067± 0.4787
Mean (SD) Change From Baseline in Haematocrit to Week 24. Secondary · Day 8, 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks

Haematocrit was measured alongside other haematology parameters at screening, baseline, Visits 1 through 8 and at follow-up.

Visit 2 (Day 8)
GroupValue95% CI
BGS649 0.1 mg-0.0003± 0.02279
BGS649 0.3 mg0.0014± 0.01945
BGS649 1.0 mg-0.0016± 0.03487
Placebo-0.0029± 0.02374
Visit 3 (Week 4)
GroupValue95% CI
BGS649 0.1 mg0.0036± 0.01855
BGS649 0.3 mg0.0024± 0.02095
BGS649 1.0 mg0.0067± 0.02997
Placebo-0.0024± 0.02539
Visit 4 (Week 8)
GroupValue95% CI
BGS649 0.1 mg0.0151± 0.02153
BGS649 0.3 mg0.0162± 0.02709
BGS649 1.0 mg0.0258± 0.03233
Placebo-0.0041± 0.02383
Visit 5 (Week 12)
GroupValue95% CI
BGS649 0.1 mg0.0153± 0.02419
BGS649 0.3 mg0.0175± 0.02270
BGS649 1.0 mg0.0256± 0.02906
Placebo-0.0082± 0.02882
Visit 6 (Week 16)
GroupValue95% CI
BGS649 0.1 mg0.0142± 0.02195
BGS649 0.3 mg0.0233± 0.02408
BGS649 1.0 mg0.0229± 0.03260
Placebo-0.0079± 0.02533
Visit 7 (Week 20)
GroupValue95% CI
BGS649 0.1 mg0.0195± 0.02545
BGS649 0.3 mg0.0192± 0.02672
BGS649 1.0 mg0.0187± 0.03222
Placebo-0.0063± 0.03037
Visit 8 (Week 24)
GroupValue95% CI
BGS649 0.1 mg0.0171± 0.02612
BGS649 0.3 mg0.0159± 0.02621
BGS649 1.0 mg0.0216± 0.02587
Placebo-0.0032± 0.02884
Mean (SD) Change From Baseline in Dual Energy X-ray Absorptiometry (DEXA) Scan T-score by Location at Week 24. Secondary · Screening to Week 24

Summary of DEXA Scan T-score at Visit 8 (Week 24) in the hip, femoral neck, and lumber spine. DEXA T-score was calculated based on actual measured bone density value and compared to a standard reference range for healthy young adult men. A bone density scan compares bone density with the bone density expected for a young healthy adult or a healthy adult of the same age, gender and ethnicity. The difference is calculated as a standard deviation (SD) score. The measures between the bone density and the expected value of a young healthy adult is known as the T score. The World Health Organizati

Hip
GroupValue95% CI
BGS649 0.1 mg0.01± 0.382
BGS649 0.3 mg0.05± 0.315
BGS649 1.0 mg-0.02± 0.323
Placebo0.01± 0.266
Femoral neck
GroupValue95% CI
BGS649 0.1 mg-0.16± 0.337
BGS649 0.3 mg0.02± 0.441
BGS649 1.0 mg-0.11± 0.392
Placebo0.03± 0.212
Lumber spine
GroupValue95% CI
BGS649 0.1 mg-0.12± 0.279
BGS649 0.3 mg-0.08± 0.381
BGS649 1.0 mg-0.22± 0.351
Placebo0.07± 0.346
Mean (SD) Change From Baseline in DEXA Scan Density by Location at Week 24 Secondary · Screening to Week 24

Summary of DEXA scan density at Visit 8 (Week 24) in the hip, femoral neck, and lumber spine. Bone density was evaluated with standard procedure for Hologic and General Electric Lunar scanners.

Hip
GroupValue95% CI
BGS649 0.1 mg-0.0026± 0.03990
BGS649 0.3 mg-0.0020± 0.03828
BGS649 1.0 mg-0.0072± 0.02724
Placebo0.0005± 0.03315
Femoral neck
GroupValue95% CI
BGS649 0.1 mg-0.0248± 0.04583
BGS649 0.3 mg-0.0044± 0.06666
BGS649 1.0 mg-0.0116± 0.05139
Placebo0.0028± 0.02747
Lumber spine
GroupValue95% CI
BGS649 0.1 mg-0.0167± 0.03174
BGS649 0.3 mg-0.0177± 0.05018
BGS649 1.0 mg-0.0255± 0.04044
Placebo0.0100± 0.04016

Adverse events — posted to ClinicalTrials.gov

Time frame: After randomisation and up to 90 days after the last administration of study drug.. Reporting threshold: 0%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

BGS649 0.1 mg
Serious: 2/67 (3%)
Deaths: 0/67
BGS649 0.3 mg
Serious: 2/66 (3%)
Deaths: 0/66
BGS649 1.0 mg
Serious: 5/67 (7%)
Deaths: 0/67
Placebo
Serious: 5/71 (7%)
Deaths: 0/71

Serious adverse events (22 terms)

ReactionSystemBGS649 0.1 mgBGS649 0.3 mgBGS649 1.0 mgPlacebo
Postoperative wound infectionInfections and infestations
Arthritis infectiveInfections and infestations
DiverticulitisInfections and infestations
OsteomyelitisInfections and infestations
PneumoniaInfections and infestations
PyelonephritisInfections and infestations
SepsisInfections and infestations
Chest painGeneral disorders
Multiple organ dysfunction syndromeGeneral disorders
Cardiac arrestCardiac disorders
Pericardial effusionCardiac disorders
Back painMusculoskeletal and connective tissue disorders
Gouty arthritisMusculoskeletal and connective tissue disorders
Acute kidney injuryRenal and urinary disorders
UreterolithiasisRenal and urinary disorders
AnaemiaBlood and lymphatic system disorders
Intestinal perforationGastrointestinal disorders
Skull fractureInjury, poisoning and procedural complications
SyncopeNervous system disorders
Respiratory failureRespiratory, thoracic and mediastinal disorders
Diabetic footSkin and subcutaneous tissue disorders
HypertensionVascular disorders
Other adverse events (201 terms — click to expand)

ReactionSystemBGS649 0.1 mgBGS649 0.3 mgBGS649 1.0 mgPlacebo
HeadacheNervous system disorders
Upper respiratory tract infectionInfections and infestations
Haematocrit increasedInvestigations
HypertensionVascular disorders
Prostatic specific antigen increasedInvestigations
FatigueGeneral disorders
ArthralgiaMusculoskeletal and connective tissue disorders
Pain in extremityMusculoskeletal and connective tissue disorders
DizzinessNervous system disorders
DepressionPsychiatric disorders
CoughRespiratory, thoracic and mediastinal disorders
PolycythaemiaBlood and lymphatic system disorders
NasopharyngitisInfections and infestations
SinusitisInfections and infestations
Urinary tract infectionInfections and infestations
Blood triglycerides increasedInvestigations
Weight increasedInvestigations
Blood pressure increasedInvestigations
Back painMusculoskeletal and connective tissue disorders
Muscle spasmsMusculoskeletal and connective tissue disorders
MyalgiaMusculoskeletal and connective tissue disorders
OsteopeniaMusculoskeletal and connective tissue disorders
DiarrhoeaGastrointestinal disorders
InsomniaPsychiatric disorders
FallInjury, poisoning and procedural complications
Limb injuryInjury, poisoning and procedural complications
Vitamin D deficiencyMetabolism and nutrition disorders
RashSkin and subcutaneous tissue disorders
PruritusSkin and subcutaneous tissue disorders
Nasal congestionRespiratory, thoracic and mediastinal disorders
GynaecomastiaReproductive system and breast disorders
Dry eyeEye disorders
InfluenzaInfections and infestations
GastroenteritisInfections and infestations
OsteomyelitisInfections and infestations
PneumoniaInfections and infestations
SepsisInfections and infestations
Tooth abscessInfections and infestations
Tooth infectionInfections and infestations
Bacterial prostatitisInfections and infestations

Most-reported serious reactions: Postoperative wound infection, Arthritis infective, Diverticulitis, Osteomyelitis, Pneumonia, Pyelonephritis, Sepsis, Chest pain.

Data from ClinicalTrials.gov NCT02730169 adverse events section.

Sponsor's own description

The purpose of this study is to evaluate the safety and efficacy of BGS649 in male obese subjects with hypogonadotropic hypogonadism. All subjects will be treated for a maximum of 24 weeks. Some subjects who complete 24 weeks of treatment will be invited to participate in a 6-month blinded safety extension study (Protocol MBGS206). The study is planned to enroll 268 subjects.

Publications & conference data

2 peer-reviewed publications reference this trial (live from Europe PMC):

  1. Leflutrozole in male obesity-associated hypogonadotropic hypogonadism: Ph 2b double-blind randomised controlled trial.
    Jones TH, Dobs AS, Randeva H, Moore W, et al · · 2023 · cited 10× · PMID 37579053 · DOI 10.1093/ejendo/lvad099
  2. OR18-4 Beneficial Effect on Sperm Production of Leflutrozole in Men with Obesity-Associated Secondary Hypogonadotropic Hypogonadism: Results from a Phase II Study
    Jones T, Dobs A, MacKinnon A, Parkin J. · · 2019

Verify or expand the search:

Other trials of BGS649

Trials testing the same drug.

Other recruiting trials for Hypogonadotropic Hypogonadism

Currently open trials in the same condition.

Other Mereo BioPharma trials

Trials by the same sponsor.

Verify against primary sources

Data sources for this page

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT02730169.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing