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Dose-Escalated Proton Radiation Therapy for High-Risk Prostate Cancer

NCT03624660 · Status: ACTIVE_NOT_RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 100

Last updated 2026-02-10

No results posted yet for this study

Summary

The purpose of this research study is to determine if dose-escalated proton radiation therapy is a good way to treat high-risk prostate cancer. The study features hypofractionation and a simultaneous integrated boost to the magnetic resonance imaging (MRI) identified intraprostatic tumor (IPT) as a method of dose-escalating radiation therapy. The study will include patients with high-risk prostate cancer who are at the highest risk for recurrence. Radiation therapy will be delivered over the course of 8-9 weeks. Additionally, androgen deprivation therapy (ADT) will be started 8-10 weeks prior to starting radiation and continued for a total of 18 months if the patient decides to receive ADT.

Conditions

  • Adenocarcinoma of the Prostate

Interventions

RADIATION

HR-A

The prostate and proximal seminal vesicles will be treated to 2 cobalt gray equivalent per fraction for 39 fractions for a total of 78 cobalt gray equivalent. Simultaneous integrated boost to the IPT will be delivered to 2.2 cobalt gray equivalent per fraction for 39 fractions for a total of 85.8 cobalt gray equivalent. Treatment will be given once a day, approximately 5 treatments per week (Monday- Friday), over 8-9 weeks.

RADIATION

HR-B

The prostate, proximal seminal vesicles, and pelvic nodes will be treated to 2 cobalt gray equivalent per fraction for 23 fractions for a total of 46 cobalt gray equivalent. The prostate and proximal seminal vesicles will be treated to an additional 2 cobalt gray equivalent per fraction for 16 fractions for a total of 32 cobalt gray equivalent. Electively treat the entire uninvolved seminal vesicle to 2 cobalt gray equivalent per fraction for 39 fractions for a total of 78 cobalt gray equivalent when part of the seminal vesicle is involved with tumor. Simultaneous integrated boost to the IPT will be delivered to 2.2 cobalt gray equivalent per fraction for 39 fractions for a total of 85.8 cobalt gray equivalent. Treatment will be given once a day, approximately 5 treatments per week (Monday- Friday), over 8-9 weeks.

Sponsors & Collaborators

  • University of Florida

    lead OTHER

Principal Investigators

  • Curtis M Bryant, MD, MPH · University of Florida Health Proton Therapy Institute

Study Design

Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
100 Years
Sex
MALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2018-09-24
Primary Completion
2028-09-30
Completion
2028-09-30

Countries

  • United States

Study Locations

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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 NCT03624660 on ClinicalTrials.gov