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Prostate CancerMay 2020Summary reviewed July 2026

A Targeted Pill Doubled the Time Before Advanced Prostate Cancer Worsened

Researchers tested olaparib in men with advanced prostate cancer that had DNA repair gene changes and stopped responding to hormone therapy. Men taking olaparib went twice as long without their cancer worsening compared to continuing hormone therapy.

What the trial was testing

The PROFOUND enrolled 387 patients with prostate cancer. The study was sponsored by AstraZeneca 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

Olaparib doubled the time before cancer worsened compared to standard hormone therapy.

The New England journal of medicine · 2020 · NCT02987543

These findings — that time before cancer worsened with olaparib compared to hormone therapy — were published in the The New England journal of medicine and represent the headline result of the study.

Researchers tracked outcomes across 387 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

Olaparib (Lynparza) is FDA-approved for metastatic prostate cancer with specific DNA repair gene mutations like BRCA1, BRCA2, or ATM. If your cancer has stopped responding to hormone therapy and you have one of these gene changes, ask your doctor about genetic testing and whether olaparib might be 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.