Proton Collaborative Group

This study tests if a shorter course of proton radiation (5 treatments over 1-2 weeks) works as well as the standard longer course (44 treatments over 8-9 weeks) for men with low-risk prostate cancer. About 150 men took part. The goal is to see if the shorter treatment controls t…

This study tests a precise type of radiation called proton therapy given after surgery for stage II/III breast cancer. The goal is to see if it can effectively treat cancer while reducing damage to the heart and other organs. About 220 women will receive this treatment and be fol…

This study tests a new way to give proton radiation for stage II-III non-small cell lung cancer. Instead of daily treatments over many weeks, patients receive higher doses over a shorter time (hypofractionation) along with standard chemotherapy. The goal is to find the safest hig…