Combining high dose-rate brachytherapy and stereotactic body radiotherapy for prostate cancer treatment
Official title: Phase 2 Study of High Dose-Rate Brachytherapy and Stereotactic Body Radiotherapy for Intermediate and High Risk Localized Prostate Adenocarcinoma (HYDRA)
Run by Jonsson Comprehensive Cancer Center · NCT04945642 · Data updated 2026-11-12
This study is testing whether combining two types of radiation therapy can improve treatment outcomes for men with prostate cancer.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | Men only |
| Enrollment | 52 (estimated) |
| Sponsor | Jonsson Comprehensive Cancer Center Academic / other |
| Drugs / interventions | chemotherapy, radiation |
| Locations | 1 site (Los Angeles, California) |
| Status | Recruiting |
| Started | August 20, 2021 |
| Main results expected | July 1, 2027 |
| Study ends | July 1, 2028 |
| Registry record updated | August 20, 2026 |
| Trial ID | NCT04945642 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 and older with histologically confirmed intermediate- to high-risk prostate adenocarcinoma and no evidence of metastatic disease.
✕Probably not a fit
Patients with neuroendocrine or small cell carcinoma of the prostate or those with prior invasive malignancies may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This clinical trial investigates the effectiveness of combining high dose-rate brachytherapy with stereotactic body radiotherapy in treating patients with prostate adenocarcinoma. The approach utilizes internal radiation therapy to deliver radioactive material directly into or near the tumor, alongside highly precise external radiation therapy. The primary objectives include estimating the biochemical progression-free survival at five years and assessing the rates of acute genitourinary and gastrointestinal symptoms following treatment. Secondary objectives focus on long-term patient-reported outcomes and toxicity assessments.
Why it matters
Potential benefit: If successful, this treatment combination could improve survival rates and reduce side effects for patients with prostate adenocarcinoma.
How similar studies have gone: Other studies have shown promising results with similar approaches, indicating potential for success in this trial.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Ability to understand a written informed consent document, and the willingness to sign it * Age \>= 18 years * Eastern Cooperative Oncology Group (ECOG) performance status 0-2 * History/physical examination with digital rectal examination of the prostate within 8 weeks prior to registration * Histologically confirmed intermediate- to high-risk prostate adenocarcinoma (T1c-T3b, PSA \> 10, and/or Gleason score \>= 7 * No evidence of disease beyond the prostate and/or seminal vesicles (i.e., no suspicious pelvic lymph nodes or presence of metastatic disease outside the pelvis) * Prostate size =\< 60cc * International Prognostic Scoring System (IPSS) score =\< 15 * Able to safely receive moderate sedation or general anesthesia Exclusion Criteria: * Patients with neuroendocrine or small cell carcinoma of the prostate * Prior or concurrent invasive malignancy (except non-melanomatous skin cancer) or lymphomatous/hematogenous malignancy unless continually disease free for a minimum of 5 years * Regional lymph node involvement * Evidence of distant metastases * Previous radical surgery (prostatectomy) or cryosurgery or high-intensity focused ultrasound for prostate cancer * Previous pelvic irradiation or prostate brachytherapy * Previous or concurrent cytotoxic chemotherapy for prostate cancer * Patients with history of inflammatory bowel disease (i.e., Crohn's disease, ulcerative colitis), high predisposition for radio-toxicity compared to general population (i.e., ataxia telangiectasia), or at risk for major bowel surgery * Transurethral resection of the prostate (TURP) procedure within 6 months of radiation treatment
Where it's running
-
University of California at Los Angeles / Jonsson Comprehensive Cancer Center
Los Angeles, California, United States Recruiting
Study contacts
- Principal investigator: Stephanie M Yoon, MD — University of California, Los Angeles
- Study coordinator: Vince Basehart
- Email: vbasehart@mednet.ucla.edu
- Phone: 310-267-8954
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Androgen therapy with or without niraparib for high-risk prostate cancer after radiation
This study is testing whether adding the drug niraparib to hormone therapy after radiation can help men with high-risk prostate cancer do better than hormone therapy alone.
-
Proton radiation therapy for high-risk prostate cancer
This study is testing if proton radiation therapy can effectively treat high-risk prostate cancer while causing fewer side effects than traditional radiation methods.
-
Relugolix to improve PSMA PET/CT imaging in men with high or very high risk prostate cancer
We are testing whether a short course of relugolix can boost PSMA levels and make PSMA PET/CT scans better at finding cancer in men with high or very high risk prostate cancer.
-
Hormone therapy and targeted radiation for prostate cancer treatment
This study is testing if combining a hormone therapy that blocks testosterone with targeted radiation can help men with prostate cancer see better results and improve their quality of life.
-
Comparing shorter radiation therapy to standard radiation for high-risk prostate cancer
This study is testing if a shorter, more intense radiation treatment for high-risk prostate cancer can work just as well as the standard longer treatment.
-
Carboplatin treatment before surgery for high-risk prostate cancer with BRCA mutations
This study is testing if giving carboplatin chemotherapy before surgery can help men with high-risk prostate cancer and BRCA mutations have better outcomes.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.