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.

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The Importance of the Primary Completion Date

Category: Homepage Feature

When you volunteered for COMPPARE, you might have heard about something its PCD. But what does that mean for you, really?

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Why Your Participation in COMPPARE Matters More…

Category: Recent News

Our most critical insights will come years after treatment ends, as long-term follow-up is essential to understanding lasting effects and benefits.

Why your participation matters

COMPPARE Publishes Latest Newsletter

Category: Recent News

Learn about the importance of the Primary Completion Date, an exciting alternative to MRIs for prostate cancer biopsies, and more.  

COMPPARE Summer 2025 Newsletter

For participants

Meet the Team

COMPPARE clinicians, researchers, patients, and other stakeholders

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For Healthcare providers

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