Clinical Trials Directory

Trials / Completed

CompletedNCT04666129

Study of Relugolix in Men With Metastatic Castration-Sensitive Prostate Cancer or Non-Metastatic or Metastatic Castration-Resistant Prostate Cancer

A Phase 1, Three-Part, Open-Label, Parallel-Cohort Safety and Tolerability Study of Relugolix in Combination With Abiraterone Acetate Plus a Corticosteroid, Apalutamide, or Docetaxel With or Without Prednisone in Men With Metastatic Castration-Sensitive Prostate Cancer or Non-Metastatic or Metastatic Castration-Resistant Prostate Cancer

Status
Completed
Phase
Phase 1
Study type
Interventional
Enrollment
48 (actual)
Sponsor
Sumitomo Pharma America, Inc. · Industry
Sex
Male
Age
18 Years
Healthy volunteers
Not accepted

Summary

This study is being conducted to assess the safety and tolerability of relugolix with other agents approved for use in combination with androgen deprivation therapy (ADT) for a 12-week treatment period and an additional 40-week safety extension period in men with prostate cancer, either metastatic castration-sensitive prostate cancer (mCSPC) or non-metastatic or metastatic castration-resistant prostate cancer (nmCRPC or mCRPC).

Detailed description

This is a three-part, open-label, parallel-cohort study to assess the safety and tolerability of relugolix as the ADT component in combination treatment with abiraterone acetate plus a corticosteroid in patients with mCSPC or mCRPC (Part 1), apalutamide in patients with mCSPC or nmCRPC (Part 2), or docetaxel with or without prednisone in patients with mCSPC or mCRPC (Part 3). The study will consist of a 45-day screening period followed by a 12-week treatment period with one of the three combination treatments (Parts 1, 2, or 3). All participants are required to be currently or previously treated with a GnRH receptor antagonist (analog), leuprolide acetate or triptorelin, or a GnRH receptor antagonist, degarelix or relugolix, in combination with either abiraterone plus prednisone (Part 1), apalutamide (Part 2), or docetaxel (Part 3). The study consists of a 12-week primary study treatment period in which safety and tolerability, including assessment of vital sign measurements, ECGs, clinical laboratory tests and reporting of adverse events every 2 to 4 weeks, followed by a 40-week safety extension treatment period during which adverse events and changes to concomitant medications will be reported. The total treatment duration is 52 weeks.

Conditions

Interventions

TypeNameDescription
DRUGRelugolix(Part 1 and Part 3) Relugolix will be administered orally as a single 360-milligram (mg) loading dose of 3 x 120-mg tablets, followed by a 120-mg dose (1 x 120-mg tablets), taken once daily at approximately the same time each day. (Part 2) Relugolix will be administered orally as a single 360-milligram (mg) loading dose of 3 x 120-mg tablets, followed by a 240-mg dose (2 x 120-mg tablets), taken once daily at approximately the same time each day.
DRUGAbirateroneAbiraterone acetate (1000 mg \[2 x 500-mg tablets\]) or fine-particle abiraterone acetate (500 mg \[4 x 125-mg tablets\]) will be administered orally once daily.
DRUGPrednisone(Part 1 only) For participants with mCSPC, a 5-mg dose of prednisone will be administered orally once daily, and for participants with mCRPC, a 5-mg dose of prednisone will be administered orally twice daily. (Part 3 only) Prednisone 5 mg can be administered orally twice daily but is not required.
DRUGMethylprednisoloneFor participants with mCRPC taking fine-particle abiraterone acetate, methylprednisolone 4 mg will be administered orally twice daily.
DRUGApalutamideApalutamide 240 mg (4 x 60-mg tablets) will be administered orally once daily.
DRUGDocetaxelDocetaxel 75 mg/m2 dose will be administered every 3 weeks as a 1-hour intravenous infusion.

Timeline

Start date
2021-02-18
Primary completion
2024-05-28
Completion
2024-05-28
First posted
2020-12-14
Last updated
2025-08-17

Locations

16 sites across 1 country: United States

Regulatory

Source: ClinicalTrials.gov record NCT04666129. Inclusion in this directory is not an endorsement.