Description:
The purpose of this study is to determine the efficacy and safety of relugolix 120 milligrams
(mg) orally once daily for 48 weeks on maintaining serum testosterone suppression to castrate
levels (< 50 nanograms/deciliter [ng/dL]) in participants with androgen-sensitive advanced
prostate cancer.
Title
- Brief Title: A Study to Evaluate the Safety and Efficacy of Relugolix in Men With Advanced Prostate Cancer
- Official Title: HERO: A Multinational Phase 3 Randomized, Open-label, Parallel Group Study to Evaluate the Safety and Efficacy of Relugolix in Men With Advanced Prostate Cancer
Clinical Trial IDs
- ORG STUDY ID:
MVT-601-3201
- SECONDARY ID:
2017-000160-15
- NCT ID:
NCT03085095
Conditions
Interventions
Drug | Synonyms | Arms |
---|
Relugolix | TAK-385 | Relugolix |
Leuprolide Acetate | | Leuprolide Acetate |
Purpose
The purpose of this study is to determine the benefit and safety of relugolix 120 mg orally
once daily for 48 weeks on maintaining serum testosterone suppression to castrate levels (≤
50 ng/dL [1.7 nmol/L] in participants with androgen-sensitive advanced prostate cancer.
Detailed Description
This study is an international phase 3 randomized, open-label, parallel group efficacy and
safety study to evaluate oral daily relugolix 120 mg in participants with androgen-sensitive
advanced prostate cancer who require at least 1 year (48 weeks) of continuous androgen
deprivation therapy. Relugolix 120 mg orally once daily or leuprolide acetate depot
suspension, 22.5 mg (or 11.25 mg in some Asian countries), every 3-months by subcutaneous or
intramuscular injection will be administered to participants with prostate cancer who require
androgen deprivation therapy.
Approximately 1100 participants will be enrolled in this study, including approximately 390
participants with metastatic advanced prostate cancer to support the analysis of the
secondary endpoint of time to castration-resistance and 138 Chinese participants (enrolled in
China and Taiwan) to support registration in China. The study includes a Screening Period, a
Treatment Period of 48 weeks, and a Follow-up Period. Additionally, unscheduled follow-up
visit(s) may be arranged for participants with study-related safety concerns as needed.
Eligible participants include those with evidence of biochemical relapse (rising
prostate-specific antigen) following local primary intervention with curative intent, newly
diagnosed metastatic disease (excluding metastases to the brain), and/or advanced localized
disease.
Following successful completion of the Screening period study participants will be randomized
2:1 to oral relugolix 120 mg once daily or leuprolide acetate 22.5 mg (or 11.25 mg in some
Asian countries) 3-month depot subcutaneous or intramuscular injection and will attend visits
monthly (every 4 weeks) where serum testosterone and prostate-specific antigen will be
assessed. Safety will be assessed throughout the study by monitoring adverse events, vital
signs, physical examinations, clinical laboratory tests, and 12-lead electrocardiograms.
Trial Arms
Name | Type | Description | Interventions |
---|
Relugolix | Experimental | Relugolix 120 mg for 48 weeks | |
Leuprolide Acetate | Active Comparator | Leuprolide acetate 22.5 mg (or 11.25 mg in some Asian countries) for 48 weeks | |
Eligibility Criteria
Key Inclusion Criteria:
1. Has histologically or cytologically confirmed diagnosis of adenocarcinoma of the
prostate;
2. Is a candidate for, in the opinion of the investigator, at least 1 year of continuous
androgen deprivation therapy for the management of androgen-sensitive advanced
prostate cancer with one of the following clinical disease state presentations:
1. Evidence of biochemical (PSA) or clinical relapse following local primary
intervention with curative intent, such as surgery, radiation therapy,
cryotherapy, or high-frequency ultrasound and not a candidate for salvage
treatment by surgery; or
2. Newly diagnosed androgen-sensitive metastatic disease; or
3. Advanced localized disease unlikely to be cured by local primary intervention
with either surgery or radiation with curative intent
Note: Once 915 participants are enrolled worldwide only participants with metastatic
advanced prostate cancer will be eligible for the study in all regions except China,
where both metastatic and non-metastatic participants will continue to be enrolled.
3. Has a serum testosterone at the Screening visit of ≥ 150 ng/dL (5.2 nmol/L);
4. Has a serum PSA concentration at the Screening visit of > 2.0 ng/mL (2.0 μg/L), or,
when applicable, post radical prostatectomy of > 0.2 ng/mL (0.2 μg/L) or post
radiotherapy, cryotherapy, or high frequency ultrasound > 2.0 ng/mL (2.0 μg/L) above
the post interventional nadir;
5. Has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 at
initial screening and at baseline.
Key Exclusion Criteria:
1. In the investigator's opinion, is likely to require chemotherapy or surgical therapy
for symptomatic disease management within 2 months of initiating androgen deprivation
therapy;
2. Previously received gonadotropin-releasing hormone analog or other form of androgen
deprivation therapy (estrogen or antiandrogen) for > 18 months total duration. If
androgen deprivation therapy was received for ≤ 18 months total duration, then that
therapy must have been completed at least 3 months prior to baseline. If the dosing
interval of the depot is longer than 3 months, then the prior androgen deprivation
therapy must have been completed at least as long as the dosing interval of the depot;
3. Previous systemic cytotoxic treatment for prostate cancer (eg, taxane-based regimen);
4. Metastases to brain per prior clinical evaluation;
5. Scheduled for major surgery after baseline;
6. History of surgical castration.
Maximum Eligible Age: | N/A |
Minimum Eligible Age: | 18 Years |
Eligible Gender: | Male |
Healthy Volunteers: | No |
Primary Outcome Measures
Measure: | Sustained Castration Rate |
Time Frame: | up to 48 weeks |
Safety Issue: | |
Description: | Sustained castration rate defined as the cumulative probability of testosterone suppression to ≤ 50 ng/dL (1.7 nmol/L) while on study treatment from Week 5 through Week 48 |
Secondary Outcome Measures
Measure: | Castration Rate by Visit |
Time Frame: | up to 5 weeks |
Safety Issue: | |
Description: | Castration rate defined as the cumulative probability of testosterone suppression to ≤ 50 ng/dL (1.7 nmol/L). |
Measure: | Profound Castration Rate |
Time Frame: | up to 48 weeks |
Safety Issue: | |
Description: | Castration rate defined as the cumulative probability of testosterone suppression to ≤ 20 ng/dL (0.7 nmol/L) while on study treatment. |
Measure: | Prostate-specific Antigen (PSA) Response Rate by Prostate Cancer Clinical Trials Working Group 3 (PCWG3) Criteria |
Time Frame: | at 3 weeks and at 5 weeks |
Safety Issue: | |
Description: | Proportion of participants with a confirmed PSA response by PCWG3 guidelines. |
Measure: | PSA Response Rate |
Time Frame: | up to 48 weeks |
Safety Issue: | |
Description: | Proportion of participants with PSA concentration < 0.2 ng/mL. |
Measure: | Time to PSA Progression |
Time Frame: | up to 48 weeks |
Safety Issue: | |
Description: | Time from baseline to PSA progression as defined by PCWG3 guidelines. |
Measure: | Quality of Life (QoL) Total Score and Each Subdomain Score |
Time Frame: | up to 48 weeks |
Safety Issue: | |
Description: | Assessed by the European Organisation of Research and Treatment of Cancer (EORTC)-QLQ-C30 and EORTC-QLQ-PR25 questionnaires. |
Measure: | QoL Total Score and Each Subdomain Score |
Time Frame: | up to 48 weeks |
Safety Issue: | |
Description: | Assessed by the European Quality of Life 5-Dimension 5-Level questionnaire. |
Measure: | Castration Resistance Free Survival |
Time Frame: | up to 48 weeks |
Safety Issue: | |
Description: | Defined as the time from the date of first dose to the date of PSA progression while castrated or death due to any reason, whichever occurs earlier. |
Measure: | Composite of Safety as Measure of Safety and Tolerability |
Time Frame: | up to 52 weeks |
Safety Issue: | |
Description: | Safety will be evaluated by the incidence of serious adverse events, incidence and severity of adverse events, incidence of permanent treatment discontinuation due to adverse events, and incidence of new clinically significant changes in clinical laboratory values and vital signs. |
Measure: | Pharmacokinetics of Relugolix |
Time Frame: | up to 48 weeks |
Safety Issue: | |
Description: | Blood samples will be collected from participants for measurement of plasma relugolix concentrations. |
Measure: | Serum Concentrations of Luteinizing Hormone, Follicle-Stimulating Hormone, Dihydrotestosterone, Sex Hormone-Binding Globulin |
Time Frame: | up to 61 weeks |
Safety Issue: | |
Description: | Blood samples will be collected from participants for hormonal measurements. |
Measure: | Testosterone Recovery |
Time Frame: | up to 90-days follow-up |
Safety Issue: | |
Description: | Blood samples will be collected from participants for serum testosterone measurements. |
Measure: | Sustained Profound Castration Rate |
Time Frame: | up to 48 weeks |
Safety Issue: | |
Description: | Sustained profound castration rate defined as the cumulative probability of testosterone suppression to ≤ 20 ng/dL (0.7 nmol/L) while on study treatment. |
Details
Phase: | Phase 3 |
Primary Purpose: | Interventional |
Overall Status: | Recruiting |
Lead Sponsor: | Myovant Sciences GmbH |
Last Updated
November 7, 2019