RecruitingPhase 3

Testing Shorter Duration Radiation Therapy Versus the Usual Radiation Therapy in Patients With High Risk Prostate Cancer

United States, Canada, Hong Kong1,209 participantsStarted 2023-12-14

Plain-language summary

This phase III trial compares stereotactic body radiation therapy (SBRT), (five treatments over two weeks using a higher dose per treatment) to usual radiation therapy (20 to 45 treatments over 4 to 9 weeks) for the treatment of high-risk prostate cancer. SBRT uses special equipment to position a patient and deliver radiation to tumors with high precision. This method may kill tumor cells with fewer doses over a shorter period of time. This trial is evaluating if shorter duration radiation prevents cancer from coming back as well as the usual radiation treatment.

Who can participate

Age range

18 Years

Sex

MALE

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Pathologically (histologically or cytologically) proven diagnosis of adenocarcinoma of prostate cancer * High-risk disease defined as having at least one or more of the following: * cT3a-T3b by digital exam or imaging (American Joint Committee on Cancer \[AJCC\] 8th edition \[Ed.\]) Note: cT4 by imaging or on digital rectal exam is not allowed * The patient's prostate specific antigen (PSA) value \> 20 ng/mL prior to starting androgen deprivation therapy (ADT) Note: Patients taking a 5-alpha reductase inhibitor (ex finasteride or dutasteride) are eligible The baseline PSA value should be doubled for PSAs taken while on 5-alpha reductase inhibitors * Gleason Score of 8-10 * Pelvic node positive by conventional imaging with a short axis of at least 1.0 cm * Prostate gland volume less than 100 cc prior to initiation of ADT as reported at time of biopsy or by separate measure with ultrasound or other imaging modalities including MRI or CT scan * No definitive clinical or radiologic evidence of metastatic disease outside of the pelvic nodes (M1a, M1b or M1c) on conventional imaging (i.e. bone scan, CT scan, MRI); Negative prostate-specific membrane antigen (PSMA) positron emission tomography (PET) is an acceptable substitute * Age \>= 18 * Eastern Cooperative Oncology Group (ECOG) Performance Status of 0-2 * No prior radiotherapy to the region of the study cancer that would result in overlap of radiation therapy fields * No prior radical prostatecto…

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Metastasis-free survival (MFS)

Timeframe: From randomization to the date of distant metastasis, or death from any cause, assessed up to 15 years

Trial details

NCT IDNCT05946213

SponsorNRG Oncology

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2036-03-31

View on ClinicalTrials.gov More Prostate Adenocarcinoma trials