CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 26 enrolled
Drug / intervention
Apalutamide +1 moredrug
Likely dose
Apalutamide 240 mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03503344
NCT03503344Phase 2Completed

A Randomized, Phase II Study of Apalutamide +/- Stereotactic Body Radiotherapy (SBRT) in Castration-Resistant Prostate Cancer Patients With Oligometastatic Disease on PSMA-PET Imaging

University of California, San Francisco·interventional·Posted Apr 19, 2018·Updated Jan 21, 2026

In Brief

A Phase 2 clinical trial evaluating Apalutamide and Stereotactic Body Radiation Therapy for Castration Levels of Testosterone and 3 related conditions. Completed, enrolled 26 participants across 1 site.

Detailed Summary

This phase II trial studies the how well apalutamide with or without stereotactic body radiation therapy work in treating participants with castration-resistant prostate cancer. Testosterone can cause the growth of prostate cancer cells. Hormone therapy using apalutamide may fight prostate cancer by blocking the use of testosterone by the tumor cells. Stereotactic body radiation therapy uses special equipment to position a patient and deliver radiation to tumors with high precision. This method can kill tumor cells with fewer doses over a shorter period and cause less damage to normal tissue. It is not yet known whether giving apalutamide with or without stereotactic body radiation therapy works better in treating participants with castration-resistant cancer.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States

Timeline

Phase 2CompletedFinished
20192020202120222023202420252026
First PostedApr 19, 2018
Enrollment StartDec 17, 2019
Primary CompletionDec 31, 2024
Study CompletionOct 31, 2025
TodayJul 2, 2026
Enrollment to primary: 5.0 yearsPosted 8.2 years ago

Interventions

Apalutamidedrug

Given PO, 240 mg per day (4 x 60mg tablets)

Stereotactic Body Radiation Therapyradiation

Undergo SBRT