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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

NCT05628363 · Status: ACTIVE_NOT_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 28

Last updated 2026-04-29

No results posted yet for this study

Summary

This trial is a prospective clinical trial designed to demonstrate the safety and feasibility of whole-pelvis adaptive prostate stereotactic body radiation therapy (SBRT) with a tumor boost to the magnetic resonance (MR)-detected sites of disease. The hypothesis is that this treatment approach will be safe and feasible with \<15% of patients experiencing an acute CTCAEv5 grade ≥3 genitourinary (GU) or gastrointestinal (GI) adverse event.

Conditions

Interventions

DEVICE

Ethos Varian treatment system

Device that will be used to administer radiotherapy

RADIATION

Adaptive stereotactic body radiotherapy

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

DRUG

Androgen deprivation therapy

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.

Sponsors & Collaborators

  • Varian Medical Systems

    collaborator INDUSTRY

  • Washington University School of Medicine

    lead OTHER

Principal Investigators

  • Amit Bhatt, M.D., Ph.D. · Washington University School of Medicine

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
MALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-01-18
Primary Completion
2025-10-25
Completion
2030-07-25
FDA Device
Yes

Countries

  • United States

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05628363 on ClinicalTrials.gov