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Prostate CancerJune 2020Summary reviewed July 2026

What the HERO Trial Found — Relugolix for Advanced Prostate Cancer

Researchers tested relugolix, a daily pill, against leuprolide injections in men with advanced prostate cancer. Relugolix lowered testosterone faster and kept it lower through 48 weeks. Men taking relugolix also had 54% fewer serious heart problems.

What the trial was testing

The HERO enrolled 1,134 patients with prostate cancer. The study was sponsored by Myovant Sciences GmbH and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

It was a large trial designed to confirm whether the treatment works well enough for wider use. Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.

What the results showed

Relugolix lowered testosterone in 56% of men by day 4, compared to 0% with leuprolide injections.

The New England journal of medicine · 2020 · NCT03085095

These findings — that men on relugolix had half as many serious heart problems as those on leuprolide — were published in the The New England journal of medicine and represent the headline result of the study.

Researchers tracked outcomes across 1,134 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with prostate cancer, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

Relugolix is FDA-approved for advanced prostate cancer. It works faster than older injections and may be safer for your heart. If you're starting hormone therapy or switching treatments, ask your doctor if relugolix is right for you.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.

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