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Welcome to the Proton Collaborative Group

The Proton Collaborative Group (PCG) operates as a research sponsor established to provide a mechanism for radiation oncologists to conduct clinical research collaboratively and in an efficient manner. The mission of PCG is to improve the survival outcome and quality of life of adults and children with cancer, through the conduct of high-quality clinical trials.

For more information, please email us at

Make a donation to Cancer Research in Memory/Honor of your Friend or Loved One.

Proton Collaborative Group
901 W. 1st Street
Bloomington, IN 47403