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NCT01666314

Study in Japan and Ex-Japan to Characterize the Pharmacokinetic and Pharmacodynamic Response to Orteronel (TAK-700) in Chemotherapy-Naive Participants With Castration-Resistant Prostate Cancer

Completed Phase 1, PHASE2 Results posted Last updated 20 March 2018
What this trial tests

Phase 1, PHASE2 trial testing Orteronel in Prostate Cancer in 137 participants. Completed in 1 September 2016.

Timeline
20 August 2012
Primary endpoint
12 September 2013
1 September 2016

Quick facts

Lead sponsorMillennium Pharmaceuticals, Inc.
PhasePhase 1, PHASE2
StatusCompleted
Study typeINTERVENTIONAL
Allocationrandomized
Designparallel
Maskingquadruple
Primary purposetreatment
Enrollment137
Start date20 August 2012
Primary completion12 September 2013
Estimated completion1 September 2016
Sites1 location across United States

Drugs / interventions tested

Conditions studied

Sponsor

Millennium Pharmaceuticals, Inc. — full company profile →

Who can join

18 and older, male only, with Prostate Cancer. 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 Participants With Serum Testosterone Levels Reduced to ≤ 2 ng/dL After 4 Weeks of Treatment in Japan Primary · Baseline and Week 4

Serum Ultra-sensitive testosterone was measured by liquid chromatography at a central laboratory.

GroupValue95% CI
Placebo (Japan)86.063.7 – 97.0
Orteronel 300 mg (Japan)100.084.6 – 100.0
Percentage of Participants With Serum Testosterone Levels Reduced to ≤ 2 ng/dL in Ex-Japan Secondary · Baseline and Week 4

Serum Ultra-sensitive testosterone was measured by liquid chromatography at a central laboratory.

GroupValue95% CI
Placebo (Ex-Japan)48.026.8 – 69.4
Orteronel 400 mg (Ex-Japan)79.057.8 – 92.9
Percent Change From Baseline in Serum Testosterone Level After 4 Weeks of Treatment Secondary · Baseline and Week 4

Serum Ultra-sensitive testosterone was measured by liquid chromatography at a central laboratory.

GroupValue95% CI
Placebo (Japan)-87.666± 10.4250
Orteronel 200 mg (Japan)-97.245± 1.2548
Orteronel 300 mg (Japan)-96.812± 2.7055
Placebo (Ex-Japan)-63.702± 43.3941
Orteronel 200 mg (Ex-Japan)-86.268± 37.2015
Orteronel 400 mg (Ex-Japan)-53.954± 118.8050
Percent Change From Baseline in Serum Testosterone Level After 12 Weeks of Treatment Secondary · Baseline and Week 12

Serum Ultra-sensitive testosterone was measured by liquid chromatography at a central laboratory.

GroupValue95% CI
Orteronel 200 mg (Japan)-95.804± 5.3367
Orteronel 300 mg (Japan)-95.703± 5.7468
Orteronel 200 mg (Ex-Japan)-91.311± 17.5217
Orteronel 400 mg (Ex-Japan)-14.442± 406.3116
Percentage of Participants With Prostate-Specific Antigen Reduction ≥ 50% (PSA50) After 4 Weeks of Treatment Secondary · Baseline and Week 4

A 50% PSA response rate (PSA50) was defined as PSA reduction ≥ 50% from Baseline.

GroupValue95% CI
Placebo (Japan)48.025.7 – 70.2
Orteronel 200 mg (Japan)50.028.2 – 71.8
Orteronel 300 mg (Japan)41.020.7 – 63.6
Placebo (Ex-Japan)17.05.0 – 38.8
Orteronel 200 mg (Ex-Japan)48.027.8 – 68.7
Orteronel 400 mg (Ex-Japan)46.025.6 – 67.2
Percentage of Participants With PSA50 After 12 Weeks of Treatment Secondary · Baseline and Week 12

A 50% PSA response rate (PSA50) was defined as PSA reduction ≥ 50% from Baseline.

GroupValue95% CI
Orteronel 200 mg (Japan)55.036.4 – 71.9
Orteronel 300 mg (Japan)47.029.1 – 65.3
Orteronel 200 mg (Ex-Japan)56.038.1 – 72.1
Orteronel 400 mg (Ex-Japan)44.027.9 – 61.9
Absolute Values for Testosterone Secondary · Baseline, Cycle 1 Day 8 and Cycle 2 Day 1

Serum Ultra-sensitive testosterone was measured by liquid chromatography at a central laboratory.

Baseline
GroupValue95% CI
Placebo (Japan)9.749± 3.8460
Orteronel 200 mg (Japan)9.079± 4.4581
Orteronel 300 mg (Japan)10.148± 4.6504
Placebo (Ex-Japan)9.173± 5.6123
Orteronel 200 mg (Ex-Japan)9.263± 5.6572
Orteronel 400 mg (Ex-Japan)14.588± 13.9833
Cycle 1 Day 8
GroupValue95% CI
Placebo (Japan)1.957± 2.2843
Orteronel 200 mg (Japan)0.213± 0.0449
Orteronel 300 mg (Japan)0.251± 0.1727
Placebo (Ex-Japan)3.509± 4.3471
Orteronel 200 mg (Ex-Japan)0.345± 0.2770
Orteronel 400 mg (Ex-Japan)6.658± 20.4347
Cycle 2 Day 1
GroupValue95% CI
Placebo (Japan)1.096± 0.7751
Orteronel 200 mg (Japan)0.203± 0.0145
Orteronel 300 mg (Japan)0.270± 0.2311
Placebo (Ex-Japan)3.095± 3.7254
Orteronel 200 mg (Ex-Japan)0.266± 0.1837
Orteronel 400 mg (Ex-Japan)11.720± 45.1753
Absolute Values for Dehydroepiandrosterone Sulfate (DHEA-S) Secondary · Baseline, Cycle 1 Day 8 and Cycle 2 Day 1

Serum Ultra low level quantification of DHEA-S was measured by liquid chromatography and mass spectrometry (LC/MS) at a central laboratory.

Baseline
GroupValue95% CI
Placebo (Japan)1928.0± 1306.59
Orteronel 200 mg (Japan)2529.0± 1309.39
Orteronel 300 mg (Japan)2340.9± 1606.36
Placebo (Ex-Japan)2601.7± 3009.41
Orteronel 200 mg (Ex-Japan)1783.0± 1554.76
Orteronel 400 mg (Ex-Japan)2155.7± 1591.51
Cycle 1 Day 8
GroupValue95% CI
Placebo (Japan)414.9± 392.63
Orteronel 200 mg (Japan)63.4± 55.11
Orteronel 300 mg (Japan)71.8± 80.23
Placebo (Ex-Japan)973.8± 1677.95
Orteronel 200 mg (Ex-Japan)116.9± 161.01
Orteronel 400 mg (Ex-Japan)226.6± 328.70
Cycle 2 Day 1
GroupValue95% CI
Placebo (Japan)268.9± 357.32
Orteronel 200 mg (Japan)14.5± 21.83
Orteronel 300 mg (Japan)36.3± 123.48
Placebo (Ex-Japan)815.7± 1918.88
Orteronel 200 mg (Ex-Japan)21.5± 25.68
Orteronel 400 mg (Ex-Japan)180.6± 527.03
Absolute Values for Adrenocorticotropic Hormone (ACTH) Secondary · Baseline, Cycle 1 Day 8 and Cycle 2 Day 1

Serum ACTH was measured by immunometric assay at the central laboratory.

Baseline
GroupValue95% CI
Placebo (Japan)5.0± 1.66
Orteronel 200 mg (Japan)5.5± 2.54
Orteronel 300 mg (Japan)8.3± 4.98
Placebo (Ex-Japan)4.7± 2.06
Orteronel 200 mg (Ex-Japan)6.0± 4.05
Orteronel 400 mg (Ex-Japan)6.4± 4.04
Cycle 1 Day 8
GroupValue95% CI
Placebo (Japan)3.1± 2.68
Orteronel 200 mg (Japan)2.3± 1.55
Orteronel 300 mg (Japan)3.0± 2.70
Placebo (Ex-Japan)3.1± 2.62
Orteronel 200 mg (Ex-Japan)3.8± 3.04
Orteronel 400 mg (Ex-Japan)3.2± 2.56
Cycle 2 Day 1
GroupValue95% CI
Placebo (Japan)1.7± 1.19
Orteronel 200 mg (Japan)1.7± 1.08
Orteronel 300 mg (Japan)2.7± 2.17
Placebo (Ex-Japan)3.0± 1.73
Orteronel 200 mg (Ex-Japan)3.7± 4.38
Orteronel 400 mg (Ex-Japan)3.6± 2.26
Absolute Values for Corticosterone Secondary · Baseline, Cycle 1 Day 8 and Cycle 2 Day 1

Serum Corticosterone was measured by high pressure liquid chromatography with mass spectrometry at the central laboratory.

Baseline
GroupValue95% CI
Placebo (Japan)5.946± 3.4433
Orteronel 200 mg (Japan)6.515± 4.8246
Orteronel 300 mg (Japan)7.768± 6.8625
Placebo (Ex-Japan)6.317± 4.1467
Orteronel 200 mg (Ex-Japan)10.030± 7.7341
Orteronel 400 mg (Ex-Japan)17.975± 35.0695
Cycle 1 Day 8
GroupValue95% CI
Placebo (Japan)1.530± 1.6404
Orteronel 200 mg (Japan)11.067± 14.4220
Orteronel 300 mg (Japan)9.709± 13.4538
Placebo (Ex-Japan)5.598± 7.1366
Orteronel 200 mg (Ex-Japan)48.668± 66.3904
Orteronel 400 mg (Ex-Japan)60.301± 77.5434
Cycle 2 Day 1
GroupValue95% CI
Placebo (Japan)0.758± 0.5108
Orteronel 200 mg (Japan)11.108± 9.0708
Orteronel 300 mg (Japan)14.654± 9.2064
Placebo (Ex-Japan)4.321± 6.4063
Orteronel 200 mg (Ex-Japan)29.929± 35.5565
Orteronel 400 mg (Ex-Japan)47.204± 53.4566
Absolute Values for Cortisol Secondary · Baseline, Cycle 1 Day 8 and Cycle 2 Day 1

Serum Cortisol was measured by immunometric assay at the central laboratory.

Baseline
GroupValue95% CI
Placebo (Japan)366.5± 116.69
Orteronel 200 mg (Japan)371.3± 119.38
Orteronel 300 mg (Japan)383.4± 125.98
Placebo (Ex-Japan)384.8± 117.14
Orteronel 200 mg (Ex-Japan)449.0± 131.54
Orteronel 400 mg (Ex-Japan)446.8± 193.09
Cycle 1 Day 8
GroupValue95% CI
Placebo (Japan)82.3± 46.16
Orteronel 200 mg (Japan)49.5± 25.53
Orteronel 300 mg (Japan)55.5± 55.97
Placebo (Ex-Japan)175.8± 107.82
Orteronel 200 mg (Ex-Japan)100.9± 87.38
Orteronel 400 mg (Ex-Japan)122.0± 88.70
Cycle 2 Day 1
GroupValue95% CI
Placebo (Japan)53.9± 24.92
Orteronel 200 mg (Japan)49.2± 21.71
Orteronel 300 mg (Japan)54.3± 39.93
Placebo (Ex-Japan)149.6± 122.91
Orteronel 200 mg (Ex-Japan)97.2± 85.66
Orteronel 400 mg (Ex-Japan)109.1± 83.19
Absolute Values for Prostate-Specific Antigen (PSA) Secondary · Baseline and Cycle 2 Day 1

Serum PSA was measured at the central laboratory.

Baseline
GroupValue95% CI
Placebo (Japan)37.588± 48.9413
Orteronel 200 mg (Japan)27.227± 24.8821
Orteronel 300 mg (Japan)97.504± 293.9496
Placebo (Ex-Japan)133.238± 189.9345
Orteronel 200 mg (Ex-Japan)165.992± 368.5016
Orteronel 400 mg (Ex-Japan)100.237± 210.5675
Cycle 2 Day 1
GroupValue95% CI
Placebo (Japan)24.325± 46.9725
Orteronel 200 mg (Japan)18.005± 16.9858
Orteronel 300 mg (Japan)38.892± 95.0124
Placebo (Ex-Japan)152.940± 261.9735
Orteronel 200 mg (Ex-Japan)117.257± 286.1870
Orteronel 400 mg (Ex-Japan)56.437± 97.1621

Adverse events — posted to ClinicalTrials.gov

Time frame: From signing of the informed consent form through 30 days after the last dose of study drug, approximately 3.2 years.. Reporting threshold: 5%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

Placebo
Serious: 10/44 (23%)
Deaths:
Orteronel 200 mg (Japan)
Serious: 8/33 (24%)
Deaths:
Orteronel 300 mg (Japan)
Serious: 18/32 (56%)
Deaths:
Orteronel 200 mg (Ex-Japan)
Serious: 16/36 (44%)
Deaths:
Orteronel 400mg (Ex-Japan)
Serious: 12/36 (33%)
Deaths:

Serious adverse events (81 terms)

ReactionSystemPlaceboOrteronel 200 mg (Japan)Orteronel 300 mg (Japan)Orteronel 200 mg (Ex-Japan)Orteronel 400mg (Ex-Japan)
DehydrationMetabolism and nutrition disorders
Diabetes mellitusMetabolism and nutrition disorders
PneumoniaInfections and infestations
Hepatic function abnormalHepatobiliary disorders
Chronic obstructive pulmonary diseaseRespiratory, thoracic and mediastinal disorders
Gastroenteritis viralInfections and infestations
HaematuriaRenal and urinary disorders
Pulmonary embolismRespiratory, thoracic and mediastinal disorders
Diabetic ketoacidosisMetabolism and nutrition disorders
HyponatraemiaMetabolism and nutrition disorders
PancreatitisGastrointestinal disorders
Pancreatitis acuteGastrointestinal disorders
Duodenal ulcerGastrointestinal disorders
BronchopneumoniaInfections and infestations
InfluenzaInfections and infestations
Lung adenocarcinomaNeoplasms benign, malignant and unspecified (incl cysts and polyps)
Cancer painNeoplasms benign, malignant and unspecified (incl cysts and polyps)
Rectal cancerNeoplasms benign, malignant and unspecified (incl cysts and polyps)
Renal neoplasmNeoplasms benign, malignant and unspecified (incl cysts and polyps)
Pancreatic enzymes increasedInvestigations
Liver function test abnormalInvestigations
AnaemiaBlood and lymphatic system disorders
Cardiac disorderCardiac disorders
General physical health deteriorationGeneral disorders
DizzinessNervous system disorders
Other adverse events (139 terms — click to expand)

ReactionSystemPlaceboOrteronel 200 mg (Japan)Orteronel 300 mg (Japan)Orteronel 200 mg (Ex-Japan)Orteronel 400mg (Ex-Japan)
Lipase increasedInvestigations
Amylase increasedInvestigations
FatigueGeneral disorders
DiarrhoeaGastrointestinal disorders
NauseaGastrointestinal disorders
ConstipationGastrointestinal disorders
Muscle spasmsMusculoskeletal and connective tissue disorders
Hot flushVascular disorders
Diabetes mellitusMetabolism and nutrition disorders
Decreased appetiteMetabolism and nutrition disorders
VomitingGastrointestinal disorders
Oedema peripheralGeneral disorders
Gamma-glutamyltransferase increasedInvestigations
HypertensionVascular disorders
NasopharyngitisInfections and infestations
Blood lactate dehydrogenase increasedInvestigations
Alanine aminotransferase increasedInvestigations
Aspartate aminotransferase increasedInvestigations
Weight decreasedInvestigations
InsomniaPsychiatric disorders
Upper respiratory trat infectionInfections and infestations
MalaiseGeneral disorders
Blood alkaline phosphatase increasedInvestigations
DizzinessNervous system disorders
Back painMusculoskeletal and connective tissue disorders
Blood creatinine increasedInvestigations
FallInjury, poisoning and procedural complications
ArthralgiaMusculoskeletal and connective tissue disorders
DyspnoeaRespiratory, thoracic and mediastinal disorders
HypokalaemiaMetabolism and nutrition disorders
SomnolenceNervous system disorders
DysgeusiaNervous system disorders
Abdominal discomfortGastrointestinal disorders
Abdominal pain upperGastrointestinal disorders
HyponatraemiaMetabolism and nutrition disorders
DehydrationMetabolism and nutrition disorders
Abdominal painGastrointestinal disorders
Blood urea increasedInvestigations
Rash macularSkin and subcutaneous tissue disorders
StomatitisGastrointestinal disorders

Most-reported serious reactions: Dehydration, Diabetes mellitus, Pneumonia, Hepatic function abnormal, Chronic obstructive pulmonary disease, Gastroenteritis viral, Haematuria, Pulmonary embolism.

Data from ClinicalTrials.gov NCT01666314 adverse events section.

Sponsor's own description

This is a double-blind, placebo-controlled, multiregional Phase1/2 study to characterize the pharmacokinetic and pharmacodynamic responses to orteronel when administered concomitantly with prednisone in Chemotherapy-Naive Participants With Castration-Resistant Prostate Cancer

Publications & conference data

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

  1. Recent progress in pharmaceutical therapies for castration-resistant prostate cancer.
    Yin L, Hu Q, Hartmann RW. · · 2013 · cited 35× · PMID 23880851 · DOI 10.3390/ijms140713958
  2. A narrative review of the role of glucocorticoid receptors in prostate cancer: developments in last 5 years.
    Zhou F, Shi Y, Zhao G, Aufderklamm S, et al · · 2022 · cited 5× · PMID 36092840 · DOI 10.21037/tau-22-501
  3. Targeted and immunotherapeutic strategies for castration-resistant prostate cancer: emerging strategies, challenges, and future directions.
    Wang B, Xiang Y, Fang Z, Le J, et al · · 2025 · cited 1× · PMID 41200193 · DOI 10.3389/fimmu.2025.1668188

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