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Randomized Study to Evaluate MACE in Patients With Prostate Cancer Treated With Relugolix or Leuprolide Acetate

Relugolix Versus Leuprolide in Patients With Prostate Cancer: A Randomized, Open-Label Study to Assess Major Adverse Cardiovascular Events (REPLACE-CV)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05605964
Enrollment
387
Registered
2022-11-04
Start date
2023-01-28
Completion date
2024-12-31
Last updated
2026-06-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Prostate Cancer

Keywords

ORGOVYX, relugolix, prostate cancer, leuprolide acetate

Brief summary

This was a randomized study to evaluate the risk of major adverse cardiovascular events (MACE) for relugolix compared with leuprolide acetate. Enrollment in this study was discontinued by the Sponsor on 01 Dec 2023. In an effort to mitigate any treatment interruptions, actively enrolled patients will be allowed to remain on study drug up to a period of 12 months ending Dec 2024 if they choose to remain in the discontinuation phase of the study.

Detailed description

Eligible patients were randomized (1:1) to receive either relugolix or leuprolide acetate for prostate cancer or as an adjunct to primary or salvage radiation therapy. The study was intended to collect clinical and cardiovascular risk factor data on patients ages 18 and older who were receiving relugolix or leuprolide acetate for their prostate cancer or as adjunct to radiation therapy with a treatment plan to be on at least 12 months of continuous ADT. Enrollment in this study was discontinued by the Sponsor on 04 Dec 2023. In an effort to mitigate any treatment interruptions, actively enrolled patients will be allowed to remain on study drug up to a period of 12 months ending Dec 2024. During this discontinuation phase, all active investigative sites will be expected to formulate a transition plan for their study patients from this clinical study to SOC as soon as practicable. The primary endpoint in this study was the time to first adjudicated MACE (nonfatal myocardial infarction, nonfatal stroke, and cardiovascular death). However, with the discontinuation of enrollment in the study on 04 DEC 2023 by the sponsor, the primary endpoint will be to describe the safety of relugolix in the study population while actively enrolled patients remain on study drug.

Interventions

DRUGRelugolix

Relugolix tablet

DRUGLeuprolide Acetate

Leuprolide acetate injection

Sponsors

Sumitomo Pharma America, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

A patient will be eligible for inclusion in the discontinuation phase of the study if the following applies: 1. Was previously enrolled under the original version and amendment 1 of this study 2. Has voluntarily resigned and dated the informed consent form prior to transition to the discontinuation phase of this study

Design outcomes

Primary

MeasureTime frameDescription
Number of Patients With Adverse Events and Serious Adverse EventsScreening; Day 1; 3, 6, 9, and 12 months; and every 3 months thereafter, up to 1 yearNumber of patients with adverse events and serious adverse events

Countries

United States

Participant flow

Pre-assignment details

387 patients had enrolled into the trial, with 194 in the relugolix arm and 193 in the leuprolide acetate arm. Of those 387 patients, a total of 9 (3 relugolix; 6 leuprolide) never received study intervention.

Baseline characteristics

Characteristic
Age, Customized
Age
65 years and younger
80 Participants
Age, Customized
Age
Above 65 years
150 Participants
History of MACE
No
134 Participants
History of MACE
Yes
53 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
4 Participants
Race (NIH/OMB)
Black or African American
45 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
13 Participants
Race (NIH/OMB)
White
148 Participants
Sex: Female, Male
Female
0 Participants
Sex: Female, Male
Male
187 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
8 / 1917 / 187
other
Total, other adverse events
93 / 19191 / 187
serious
Total, serious adverse events
13 / 1915 / 187

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 16, 2026