20 and older, male only, with Hormone Treatment-naïve Participants 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.
Part A: Number of Participants With Dose-limiting Toxicities (DLTs)Primary· From treatment initiation until Day 28
DLTs were defined as treatment-related adverse events (AEs) that occurred within the first 28 days of treatment as per common terminology criteria for adverse events (CTCAE) version 4.03: any grade 3 or higher toxicity; QT/Fridericia corrected QT (QTcF) greater than (\>) 500 millisecond (msec) after treatment initiation; QT/QTcF interval prolongation \>60 msec postdose.
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
0
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0
Part A: Number of Participants Reporting One or More Treatment-emergent Adverse Event (TEAE)Primary· From treatment initiation until 40 days after last dose of study drug (Day 68)
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
3
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
2
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
3
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
2
Part A: Number of Participants With Grade 2 or Higher Laboratory Test AbnormalitiesPrimary· From treatment initiation until 40 days after last dose of study drug (Day 68)
Laboratory test abnormalities were graded using the CTCAE. The grades were: Grade 2- (moderate) minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental activity of daily living (ADL); Grade 3- (severe) medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limited self-care ADL. Data has been presented for any Grade 2 or higher event in the laboratory test abnormalities.
Grade 2: White Blood Cell Low
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
1
Grade 2: Neutrophil Count Low
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
0
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
1
Grade 2: Lymphocyte Count Low
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
1
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0
Grade 2: Potassium Low
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
0
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
1
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0
Part A: Number of Participants With Markedly Abnormal Values of Vital Signs ParametersPrimary· From treatment initiation until 40 days after last dose of study drug (Day 68)
Body Temperature <35.6 degree Celsius
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
1
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0
Systolic BP >180 millimeter of Mercury (mmHg)
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0
Diastolic BP <50 mmHg
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0
Pulse <50 beats per minute (bpm)
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
1
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0
Part A: Number of Participants With Markedly Abnormal Values of Electrocardiogram (ECG) ParametersPrimary· From treatment initiation until 40 days after last dose of study drug (Day 68)
Heart Rate <50 bpm
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
2
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0
QT Interval >=460 millisecond (msec)
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
2
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
1
Part B: Number of Participants Reporting One or More TEAEPrimary· From treatment initiation until 40 days after last dose of study drug (Day 712)
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
15
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
15
Part B: Number of Participants With Grade 2 or Higher Laboratory Test AbnormalitiesPrimary· From treatment initiation until 40 days after last dose of study drug (Day 712)
Laboratory test abnormalities were graded using the CTCAE. The grades were: Grade 2- (moderate) minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental ADL; Grade 3- (severe) medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limited self-care ADL. Data has been presented for any Grade 2 or higher event in the laboratory test abnormalities. Here aspartate aminotransferase (AST) (glutamic-oxaloacetic transaminase \[GOT\]) High, creatine kinase (CK) (creatine phosphokinase \[CPK\
Grade 2: White Blood Cell Low
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
3
Grade 3: White Blood Cell Low
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0
Grade 3: Hemoglobin Low
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0
Grade 2: Neutrophil Count Low
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
2
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
2
Grade 2: Lymphocyte Count Low
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
1
Grade 3: Lymphocyte Count Low
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0
Grade 2: Glucose High
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
2
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
2
Grade 3: Bilirubin Total High
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
0
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
1
Part B: Number of Participants With Markedly Abnormal Values of Vital Signs ParametersPrimary· From treatment initiation until 40 days after last dose of study drug (Day 712)
Here "BP" is blood pressure.
Body Temperature <35.6 degree Celsius
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
7
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
4
Systolic BP >180 mmHg
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0
Diastolic BP >110 mmHg
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
1
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0
Diastolic BP <50 mmHg
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
0
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
1
Pulse <50 bpm
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
2
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
1
Part B: Number of Participants With Markedly Abnormal Values of ECG ParametersPrimary· From treatment initiation until 40 days after last dose of study drug (Day 712)
Heart Rate <50 bpm
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
4
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
2
QT Interval >=460 msec
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
5
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
4
QTcF Interval >=500 msec
Group
Value
95% CI
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
2
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
5
Part A: Cmax: Maximum Observed Plasma Concentration for Unchanged TAK-385 on Day 1, 14 and 28Secondary· Days 1, 14 and 28 pre-dose and at multiple time points (up to 12 hours for Days 1 and 14; up to 72 hours for Day 28) post-dose
Day 1
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
191.7
± 94.405
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
198.0
± 62.386
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
250.0
± 207.56
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
254.0
± 330.58
Day 14
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
23.53
± 1.4189
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
94.40
± 115.08
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
216.1
± 151.78
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
65.57
± 40.840
Day 28
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
38.10
± 21.743
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
34.43
± 24.962
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
94.70
± 114.98
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
25.56
± 16.275
Part A: AUCτ: Area Under the Plasma Concentration-time Curve From Time 0 to (Tau) Over the Dosing Interval for Unchanged TAK-385 on Day 1, 14 and 28Secondary· Days 1, 14 and 28 pre-dose and at multiple time points (up to 12 hours for Days 1 and 14; up to 72 hours for Day 28) post-dose
Day 1
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
679.7
± 96.340
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
933.0
± 604.30
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
761.7
± 249.78
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
663.3
± 501.85
Day 14
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
199.0
± 49.487
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
363.8
± 291.00
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
741.7
± 385.96
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
379.0
± 199.65
Day 28
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
239.0
± 75.020
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
323.4
± 230.40
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
469.0
± 458.21
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
227.5
± 138.37
Part A: Serum Testosterone Concentrations for TAK-385Secondary· Up to Day 35
Baseline
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
5.440
± 1.6829
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
6.505
± 2.6175
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
6.317
± 1.7503
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
7.853
± 1.1885
Day 2
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
0.603
± 0.1457
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0.977
± 0.5288
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0.777
± 0.2485
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
1.477
± 1.3540
Day 3
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
0.350
± 0.0917
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0.460
± 0.1852
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0.483
± 0.1762
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0.623
± 0.3232
Day 7
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
0.283
± 0.0764
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0.380
± 0.2177
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0.377
± 0.1332
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0.337
± 0.0416
Day 14
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
0.140
± 0.0173
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0.213
± 0.1102
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0.213
± 0.1012
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0.203
± 0.0379
Day 21
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
0.143
± 0.0635
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0.220
± 0.1044
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0.207
± 0.0635
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0.207
± 0.0666
Day 28
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
0.137
± 0.0577
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0.200
± 0.0700
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0.190
± 0.0693
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0.243
± 0.0802
Day 31
Group
Value
95% CI
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
0.137
± 0.0416
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
0.217
± 0.1002
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
0.170
± 0.0436
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
0.210
± 0.0854
Adverse events — posted to ClinicalTrials.gov
Time frame: From treatment initiation until 40 days after last dose of study drug (Day 68 for Part A and Day 712 for Part B).
Reporting threshold: 5%.
Adverse-event reports describe events observed during the trial — not all are caused by the drug.
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mg
Serious: 0/3 (0%)
Deaths: 0/3
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mg
Serious: 0/4 (0%)
Deaths: 0/4
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mg
Serious: 0/3 (0%)
Deaths: 0/3
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mg
Serious: 0/3 (0%)
Deaths: 0/3
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mg
Serious: 3/15 (20%)
Deaths: 0/15
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mg
Serious: 3/15 (20%)
Deaths: 0/15
Serious adverse events (9 terms)
Reaction
System
Part A Cohort 1: TAK-385 3…
Part A Cohort 2: TAK-385 3…
Part A Cohort 3: TAK-385 3…
Part A Cohort 4: TAK-385 3…
Part B Cohort 1: TAK-385 3…
Part B Cohort 2: TAK-385 3…
Gastrointestinal haemorrhage
Gastrointestinal disorders
—
—
—
—
—
—
Inguinal hernia
Gastrointestinal disorders
—
—
—
—
—
—
Jaundice cholestatic
Hepatobiliary disorders
—
—
—
—
—
—
Appendicitis perforated
Infections and infestations
—
—
—
—
—
—
Postoperative wound infection
Infections and infestations
—
—
—
—
—
—
Oesophageal carcinoma
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
—
—
—
—
—
—
Cerebral infarction
Nervous system disorders
—
—
—
—
—
—
Device loosening
Product Issues
—
—
—
—
—
—
Hydronephrosis
Renal and urinary disorders
—
—
—
—
—
—
Other adverse events (125 terms — click to expand)
The purpose of this study is to evaluate the tolerability and safety of TAK-385 in hormone treatment-naïve participants with non-metastatic prostate cancer.
Publications & conference data
1 peer-reviewed publication reference this trial (live from Europe PMC):
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Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Takeda
Last refreshed: 19 November 2018
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/NCT02141659.