Welcome to COMPPARE

A Prospective Comparative Study of Outcomes with Proton and Photon Radiation in Prostate Cancer. Patient enrollment in COMPPARE closed October 31, 2022.

Recent news

COMPPARE Completes Patient Enrollment

Category: Homepage Feature

After four years and 2,524 enrolled patients, the COMPPARE team officially closed patient accrual to the study on October 31, 2022 at 11:59 p.m…


COMPPARE Enrolls 1,000th Photon Patient

Category: Recent News

The COMPPARE Coordinating Center announced today that the study has enrolled its 1,000th photon prostate cancer patient to reach 67% of its photon…

September is Prostate Cancer Awareness Month

Category: Recent News

If you are a man between the ages of 55 and 69, September is a good time to schedule a prostate screening, one that includes both a PSA blood test…

Get a screening this September

For participants

Meet the Team

COMPPARE clinicians, researchers, patients, and other stakeholders

Who we are

For Healthcare providers


Privately and publicly funded clinical studies conducted around the world.

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Contact the COMPPARE Team