Adaptive Stereotactic Body Radiation Therapy to the Prostate and Pelvic Nodes With Simultaneous Integrated Boost to the MR-detected Nodule for Patients With High-risk and Unfavorable Intermediate-risk Prostate Cancer

Device that will be used to administer radiotherapy

Radiotherapy interruptions are acceptable as long as treatments are no more than 16 days apart.

"Androgen deprivation therapy (ADT) will be administered to study patients according to institutional standard. Patients should initiate ADT beginning no sooner than 60 days prior to start of radiation. ADT is defined as a GnRH agonist/antagonist (leuprolide, goserelin, degarelix, or relugolix). Patients treated with leuprolide, goserelin, or degarelix should also receive an androgen receptor antagonist (flutamide or bicalutamide) for 30 days from the start of GnRH agonist/antagonist or until the end of radiation, depending on institutional standard and physician preference.~Agent selection is per treating physician discretion and will be administered per institutional standard and FDA-approved labeling."