Testing SABR + HDR for prostate cancer
Official title: 2 Ablative RadioTherapy Treatments for Prostate Cancer
Electively Combining Two Ablative RadioTherapy Treatments for Favorable Risk Prostate Cancer Patients (EARTH)
Interventions
SABR + HDR
One SABR treatment + one HDR brachytherapy treatment
Canadian Sites (1)
Sunnybrook Health Sciences Centre
Toronto, Ontario, Canada
Eligibility Criteria
See who this study is looking for14 criteria
The trial’s own eligibility text, word for word from the registry. Only the trial site can say who takes part.
Inclusion
- +Favorable intermediate risk disease: One of T2c, grade group 2, or PSA 10-20 ng/ml. Patients cannot have percent core positivity \> 50%
- +Histologically confirmed diagnosis of adenocarcinoma of the prostate
- +Favorable risk disease defined as either:
- +Low risk disease: T1-T2c, grade group 1, PSA \< 10 ng/ml or
- +Prostate volume \< 60 cc as determined by US, CT or MRI
- +Ability to undergo MR imaging
- +Provide written informed consentInformed consentThe process of being told what taking part involves, then choosing freely.Read more →
Exclusion
- −Documented nodal or distant metastases
- −Previous pelvic radiotherapy
- −Previous transurethral resection of prostate, previous prostatectomy or HIFU
- −Use of androgen deprivation therapy. Use of 5-alpha-reductase inhibitors permitted
- −Poor baselineBaselineYour starting measurements, taken before treatment begins.Read more → urinary function defined as International Prostate Symptom Score (IPSS) \>15
- −Contra-indication to radical prostate radiotherapy e.g. connective tissue disease or inflammatory bowel disease
- −Significant medical co-morbidity rendering patient unsuitable for general anaesthesia
In plain language
Assembled directly from this trial’s registry record. Every sentence traces to a field below — nothing here is generated or interpreted.
What this study is
This study is testing a treatment for a condition.
Phase 2Phase 2A middle-stage study looking at what a treatment does and watching for side effects.Read more →/3 — a combined study that runs the middle stage and the large comparison stage together.
What is being given or done in this study: SABR + HDR.
From the trial registry
Built from these fields:
- designModule.designInfo.primaryPurpose
- designModule.phases
- armsInterventionsModule.interventions[].name
How the study is run
There is only one group in this study, so there is no assignment to different treatments.
This study is open-labelOpen-labelEveryone knows which treatment is being given — nothing is hidden.Read more →: everyone knows which treatment is being given, including you and the study team.
From the trial registry
Built from these fields:
- designModule.designInfo.allocation
- designModule.designInfo.maskingInfo.masking
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
There is one group in this study.
From the trial registry
Built from this field:
- armsInterventionsModule.armGroups[].type
Who the study is looking for
The study lists male participants only.
The study does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
These are the criteria the study lists. Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part.
From the trial registry
Built from these fields:
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How big and how long
The study aims to enrol about 30 people.
The study is currently expected to finish around July 2028.
The main measurement is taken over: 6 months.
From the trial registry
Built from these fields:
- designModule.enrollmentInfo.count
- statusModule.completionDateStruct.date
- outcomesModule.primaryOutcomes[].timeFrame
What the study measures
Acute Toxicities — measured over 6 months.
From the trial registry
Built from these fields:
- outcomesModule.primaryOutcomes[].measure
- outcomesModule.primaryOutcomes[].timeFrame
Source: NCT04654338 on ClinicalTrials.gov. The full registry text is further down this page — this summary never replaces it.
Not medical advice. What do these terms mean?
What is being tested — in plain terms
About SABR + HDRRadiation
One SABR treatment + one HDR brachytherapy treatment
From the trial registry — its own words, unedited.
What a radiation is here: A form of radiotherapy or radiation-based treatment being studied.
Read the full explanation → · in clinical review
Common questions
Answered from this trial’s registry record. Where the record doesn’t say, these answers say so rather than filling the gap.
Am I eligible for this trial?
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part. Concord cannot make that determination, and neither can any tool that has not examined you.
The full inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more → and exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → are published on this page, exactly as the study team wrote them.
The useful next step is to bring this trial to your doctor. Answering a few questions first gives them something concrete to review.
From the trial registry
- eligibilityModule.eligibilityCriteria
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
From the trial registry
- armsInterventionsModule.armGroups[].type
Would I know which treatment I am getting?
This study is open-labelOpen-labelEveryone knows which treatment is being given — nothing is hidden.Read more →: everyone knows which treatment is being given, including you and the study team.
There is only one group in this study, so there is no assignment to different treatments.
From the trial registry
- designModule.designInfo.maskingInfo.masking
- designModule.designInfo.allocation
Who can join?
It lists male participants only.
It does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can confirm whether a particular person can take part.
From the trial registry
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How long would this take?
The study's main measurement is taken over: 6 months.
The study as a whole is currently expected to finish around 2028-07-29.
How long any one person takes part can differ from the study length. The study team can tell you what the schedule looks like in practice.
From the trial registry
- outcomesModule.primaryOutcomes[].timeFrame
- statusModule.completionDateStruct.date
How many people are taking part?
The study aims to enrol about 30 people.
From the trial registry
- designModule.enrollmentInfo.count
Where is this happening?
This study lists one location: Toronto, Ontario, Canada.
Sites can open and close during a study, so confirm with the team before travelling.
From the trial registry
- trial_locations
About This Trial
Favorable-risk prostate cancer represent a large proportion of patients diagnosed with prostate cancer and image guided radiation therapy (IGRT) is commonly used to treat these patients using protracted courses of up to 39 treatments over 8 weeks. Stereotactic ablative body radiotherapy (SABR) protocols hold the promise of more convenience, less side effects, less cost and improved system capacity without sacrificing excellent cancer control rates. By the same token, prostate high-dose rate (HDR) brachytherapy boost has been shown to be superior to standard external beam radiation. While two HDR fractions appear to optimize patient convenience and outcomes while minimizing costs, we wanted to determine the tolerability of combining one MR-guided HDR treatment with one SABR treatment to further reduce HDR resource use while maintaining favourable treatment outcomes.
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See if this trial could fit youThis page is for informational purposes only and does not constitute medical advice. Clinical trial eligibility can only be determined by the trial site after proper screening. Trial information is sourced from ClinicalTrials.gov and may not reflect the most current status. Always consult your healthcare provider before making decisions about clinical trial participation.