This study is for patients that have been diagnosed with prostate cancer. The purpose of this study is to directly compare photon (X-ray) therapy and proton therapy to determine which one has better disease control and fewer patient-reported and physician-reported side effects. Participants can expect to be in this study for a minimum of 3 years and up to 10 years, depending on funding.

The ProSpace balloon is being studied to test if it will temporarily position the anterior rectal wall away from the prostate during radiotherapy for prostate cancer and in creating that space will reduce the radiation dose delivered to the anterior rectum. The ProSpace balloon is composed of a bioresorbable polymer material called RESOMER. RESOMER is well studied and approved for many indications. This study will show if it will maintain that space for the entire course of prostate radiotherapy treatment and then be completely absorbed by the body over time. The balloon is considered a permanent implant because it will remain in the body for at least 30 days. The ProSpace System study will collect data to demonstrate the safety and efficacy of its indication. This device is currently investigational in the United States

This study is for men who have prostate cancer. The purpose of this study is to compare the effects, good and/or bad, of adding either prostate removal surgery or radiation therapy of the prostate to standard systemic therapy (SST), which is used to treat prostate cancer.

This study is for patients with prostate cancer that has a risk of getting worse. The purpose of this study is to compare any good and bad effects of using stereotactic body radiation therapy (SBRT), a technique that gives treatment in a shorter amount of time compared to the usual radiation therapy.

The purpose of this study is to compare the effects of hormone therapy (androgen deprivation) and radiation therapy to the prostate gland and seminal vesicles with hormone therapy and radiation therapy to the whole pelvic body area to determine which is better.

There are 2 treatment groups in this study:
1) Patients who receive hormone therapy plus radiation therapy to the prostate gland and seminal vesicles
2) Patients who receive hormone therapy plus radiation therapy to the whole pelvis

This study is for patients with prostate cancer. The purpose of this study is to compare the effects of dose-escalated radiation therapy with or without hormone therapy on your prostate cancer.
There are 2 treatment groups in this study:
1) Patients who receive radiation therapy only
2) Patients who receive radiation therapy plus hormone therapy
Patients will receive 44 radiation treatments over approximately 2 months. If the patient chooses to receive the brachytherapy implant, he will receive 25 daily treatments plus the implant procedure over a timeframe of approximately 6 weeks. Hormone therapy, if given, will last 6 months. After patients are finished receiving therapy, the study doctor will ask them to visit the office for follow-up exams at 3, 6, 9, and 12 months after finishing radiation treatment, every 6 months for 4 years, and yearly thereafter.

The purpose of this study is to compare the effects of hormone therapy (androgen deprivation) and TAK-700 plus radiation therapy with hormone therapy (androgen deprivation) and radiation therapy on patients with prostate cancer.
There are 2 treatment groups in this study. Group 1will receive hormone therapy plus radiation therapy only and Group 2 will receive hormone therapy and TAK-700 plus radiation therapy.
Subjects will receive hormone therapy for 24 months. Radiation will be given in 44 treatments over approximately 2 months. If the subject is in Group 2 they will take TAK-700 for 24 months. After the subject is finished receiving therapy, the study doctor will ask the subject to visit the office for follow-up exams every 6 months for 3 years and then once a year.