MedTrace Logo

A Study of Stereotactic Body Radiation Therapy and Radium (Ra-223) Dichloride in Prostate Cancer That Has Spread to the Bones

NCT05133440 · Status: COMPLETED · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 12

Last updated 2026-04-28

No results posted yet for this study

Summary

Participants will either receive treatment with standard SBRT and the study drug Radium (Ra-223) dichloride, or standard SBRT alone.

Conditions

Interventions

DRUG

Radium dichloride

Two cycles of Radium (Ra-223) dichloride at 55 kBq/kg or 0.00149 mCi/kg or 1.49 uCi/kg every 4 weeks followed 2-3 weeks later by SBRT at a dose of 9 Gy per fraction for 3 fractions (total dose of 27 Gy) to all sites of radiographically apparent metastatic disease. SBRT fractions can be administered every day or every other day per institutional practice. An additional 4 cycles of Radium (Ra-223) dichloride at 55 kBq/kg or 0.00149 mCi/kg or 1.49 uCi/kg every 4 weeks will then be administered, resuming 2-3 weeks after completion of the final fraction of SBRT.

DIAGNOSTIC_TEST

PET Scan

For both arms, the NaF PET will be used to identify discrete osseous lesions which will become index lesions for the study. The simulation scan (either baseline or after 2 cycles of Ra-223) will be used to generate a suitable SBRT radiation plan, per standard practice. If the index lesions are no longer visible after two cycles of Ra-223, we still intend to consolidate the area with radiation. If the lesions are initially radio-occult on the CT and only visible on the NaF PET, we will fuse the pre-treatment NaF PET/CT to the simulation CT after 2 cycles of Ra-223 to delineate the SBRT treatment volumes.

Sponsors & Collaborators

Principal Investigators

  • Brandon Imber, MD · Memorial Sloan Kettering Cancer Center

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
MALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2021-11-12
Primary Completion
2026-04-27
Completion
2026-04-27
FDA Drug
Yes

Countries

  • United States

Study Locations

More Related Trials

Entities

Diseases
Companies

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 NCT05133440 on ClinicalTrials.gov