Adaptive radiation therapy for localized prostate cancer
Official title: ART of SABR: A Randomized Phase II Trial of Adaptive Radiation Therapy (ART) Stereotactic Ablative Body Radiotherapy (SABR) for Primary Localized Prostate Cancer: Two Versus Five Fractions
Run by Mayo Clinic · NCT06325046 · Data updated 2026-11-12
This study is testing a new type of radiation therapy for localized prostate cancer to see if it can improve patients' quality of life compared to standard treatment.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | Men only |
| Enrollment | 164 (estimated) |
| Sponsor | Mayo Clinic Academic / other |
| Drugs / interventions | chemotherapy, radiation |
| Locations | 5 sites (Albert Lea, Minnesota and 4 other locations) |
| Status | Recruiting |
| Started | August 15, 2024 |
| Main results expected | April 30, 2027 |
| Study ends | April 30, 2032 |
| Registry record updated | October 14, 2026 |
| Trial ID | NCT06325046 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates include adult males aged 18 and older with histologically confirmed low- to intermediate-risk localized prostate adenocarcinoma.
✕Probably not a fit
Patients with very low-, high-, or very high-risk prostate adenocarcinoma or those who have received prior definitive treatment for prostate cancer 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 evaluates the impact of near margin-less adaptive radiation therapy (ART) on quality of life in patients with localized prostate cancer, comparing it to standard stereotactic ablative body radiotherapy (SABR). The study aims to assess early and late patient-reported quality of life changes, gastrointestinal and genitourinary toxicities, and financial impacts associated with the treatments. ART utilizes real-time data to adjust radiation delivery, potentially reducing exposure to healthy tissues and shortening treatment duration. Participants will undergo assessments using validated questionnaires and toxicity grading scales to measure outcomes.
Why it matters
Potential benefit: If successful, this approach could lead to improved quality of life and reduced side effects for patients undergoing treatment for localized prostate cancer.
How similar studies have gone: Other studies have shown promise with adaptive radiation therapy approaches, suggesting potential for success in this novel application.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Gender assigned male at birth: age ≥ 18 years * Histological confirmation of prostate adenocarcinoma * National Comprehensive Cancer Network (NCCN) (Prostate Cancer version 4.2022) low- to intermediate-risk prostate adenocarcinoma * Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2 * Ability to complete questionnaire(s) by themselves or with assistance * Signed informed consent * Willing to complete requirements for follow-up (during active monitoring phase) Exclusion Criteria: * NCCN (Prostate Cancer version 4.2022) very low-, high-, or very high-risk prostate adenocarcinoma * Prior definitive treatment of prostate cancer including radiotherapy, prostatectomy, cryotherapy, or high intensity focused ultrasound (HIFU) * Prior bladder outlet obstruction procedures including transurethral resection of the prostate (TURP), Holmium laser enucleation of the prostate (HoLEP), transurethral vaporesection of the prostate (TUVRP), etc. * Metastatic disease by conventional or molecular imaging * Contraindications to radiation therapy (RT) including uncontrolled inflammatory bowel disease, ATM mutation, and Xeroderma pigmentosum mutation * Concurrent antineoplastic agents (chemotherapy) * Previous or concurrent malignancy other than non-melanoma skin cancer, indolent lymphoma, or chronic myelogenous leukemia, unless continuously disease-free ≥ 5 years * Medical or psychiatric conditions that preclude informed decision-making or adherence with the protocol-defined treatment or follow-up * Prostate gland volume \> 80 cc based on magnetic resonance imaging (MRI), and/or International Prostate Symptom Score (IPSS) composite score \> 17 * Body weight \> 200 kilogram * Known allergy or sensitivity to polyethylene glycol (PEG) or iodine
Where it's running
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Mayo Clinic Health System in Albert Lea
Albert Lea, Minnesota, United States Recruiting -
Mayo Clinic Health System-Mankato
Mankato, Minnesota, United States Recruiting -
Mayo Clinic in Rochester
Rochester, Minnesota, United States Recruiting -
Mayo Clinic Health System-Eau Claire
Eau Claire, Wisconsin, United States Recruiting -
Mayo Clinic Health System-Franciscan Healthcare
La Crosse, Wisconsin, United States Recruiting
Study contacts
- Principal investigator: Mark R. Waddle, MD — Mayo Clinic in Rochester
- Study coordinator: Clinical Trials Referral Office
- Email: mayocliniccancerstudies@mayo.edu
- Phone: 855-776-0015
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Image-guided adaptive stereotactic body radiation therapy for localized prostate cancer
This trial tests whether daily, real-time adaptive image-guided SBRT causes fewer urinary and other side effects than standard non-adaptive SBRT for men with localized prostate cancer.
-
MRI or CT planning to guide high-dose-rate prostate brachytherapy
This trial tests whether adding an MRI to CT-based treatment planning for HDR prostate brachytherapy changes urinary side effects in men with localized prostate cancer.
-
Exercise after pelvic radiation to see if it lowers colorectal cancer risk
This study tests whether regular walking therapy after pelvic radiation for prostate cancer can influence markers of colorectal cancer in colon tissue and blood.
-
Wrapping nerves with a multi-layer perinatal tissue graft during prostate removal
This trial will test whether wrapping the nerves with a multi-layer perinatal tissue allograft during nerve-sparing robotic prostate removal helps men with localized prostate cancer keep erectile and urinary function.
-
Testosterone therapy for men with low testosterone and localized prostate cancer on active surveillance
This study is testing if testosterone therapy can help men with low testosterone and localized prostate cancer feel better and stay safe while they are being monitored for their cancer.
-
Using advanced imaging to predict lymph node spread in high-risk prostate cancer
This study is testing a new imaging method to see if it can help doctors predict whether high-risk prostate cancer has spread to lymph nodes before surgery.
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.