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OncoMatch/Clinical Trials/NCT03424850

Safety and Efficacy of 21 Gy, 23 Gy and 25 Gy for High Dose Rate (HDR) Prostate Brachytherapy

Is NCT03424850 recruiting? Yes, currently enrolling (May 2026). This Phase 1/2 trial studies non-drug interventions for prostate cancer.

Phase 1/2RecruitingWashington University School of MedicineNCT03424850Data as of May 2026

The purpose of this research study is to learn more about the outcomes and early and late side effects of treating early stage prostate cancer with high dose rate brachytherapy.

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Extracted eligibility criteria

Cancer type

Prostate Cancer

Disease stage

Grade: Gleason ≤ 6Gleason 3 + 4 = 7 (Gleason)

Must be considered either low-risk (T1-T2a, Gleason ≤ 6, PSA < 10 ng/mL) or favorable intermediate-risk (Gleason 3 +4 = 7, percentage of positive biopsy cores < 50%, no more than one NCCN intermediate risk factor).

Performance status

ECOG 0–2(Ambulatory, capable of self-care)

Prior therapy

Must have received: androgen deprivation therapy — allowed, may have been initiated up to 6 months prior to HDR implant; duration 4-36 months

Prior androgen deprivation therapy is allowed and may have been initiated up to 6 months prior to the date of the HDR implant. The complete duration of androgen deprivation therapy can range from 4 months to 36 months provided it has been initiated no more than 6 months prior to the date of the HDR implant.

Cannot have received: radiation therapy

Prior radiation therapy to the prostate or lower pelvis encompassing the prostate.

Structured fields extracted by AI. May contain errors — verify against the official protocol.

US trial sites

  • Washington University School of Medicine · St Louis, Missouri

Showing up to 5 US sites. See all sites on ClinicalTrials.gov →

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