SpaceOAR Post-Market Registry for Rectal Hydrogel Spacers
Official title: OASIS: SpaceOAR PoSt - Market Registry Study: Assessing the Safety & Acceptability of SpaceOAR Use With Prostate Radiotherapy
Run by Sheffield Teaching Hospitals NHS Foundation Trust · NCT07300631 · Data updated 2026-11-12
This project will see how safe SpaceOAR and SpaceOAR Vue rectal hydrogel spacers are by collecting short- and long-term side-effect information from men receiving radiotherapy for prostate cancer in the UK and France.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | Men only |
| Enrollment | 320 (estimated) |
| Sponsor | Sheffield Teaching Hospitals NHS Foundation Trust Academic / other |
| Locations | 8 sites (Brest and 7 other locations) |
| Status | Recruiting |
| Started | December 31, 2025 |
| Main results expected | February 2030 |
| Study ends | February 2030 |
| Registry record updated | July 30, 2026 |
| Trial ID | NCT07300631 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are men with prostate cancer planned for curative-intent radiotherapy who are receiving a SpaceOAR or SpaceOAR Vue spacer as part of routine care, are 18 or older, and can give informed consent under local procedures.
✕Probably not a fit
Men who do not receive a SpaceOAR spacer, are treated outside participating centres, or lack capacity to consent are not eligible and would not benefit from this registry's data collection.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational post-market registry will collect clinical and safety data from men who receive SpaceOAR or SpaceOAR Vue as part of routine radiotherapy care at participating centres in the UK and France. Data will be obtained from medical records and treating clinicians, and participants will be asked to complete questionnaires about side effects and their experiences. The registry will capture baseline clinical characteristics, physician-rated performance of the spacer insertion procedure, short-term complications, and long-term safety outcomes. No additional interventions are required beyond usual care and enrollment follows local consent procedures.
Why it matters
Potential benefit: If successful, the registry could clarify long-term safety and side-effect risks of SpaceOAR devices and help patients and clinicians make better-informed treatment decisions.
How similar studies have gone: Randomized and observational studies have shown hydrogel spacers can reduce rectal radiation dose and short-term rectal toxicity, but long-term safety data remain limited, prompting this post-market follow-up.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * All patients with a clinical diagnosis of prostate cancer planned to undergo treatment with curative intent at selected sites in the UK \& France subject to a SpaceOAR being used as usual care. * Aged 18 years old or above. * Patients who agrees to participate and has been deemed by their medical team to have capacity to provide; * verbal, informed consent over telephone as documented on the study informed consent form by the Researchers (UK only) * written, informed consent by signature of the study informed consent form (France only) * Patient covered by social security scheme (France only) Exclusion Criteria: \- Patients lacking the capacity to provide; * informed consent as documented on the study informed consent form by the - Researchers (UK only) * written, informed consent by signature of the study informed consent form (France only)
Where it's running
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CHU de Brest, Boulevard de Tanguy Prigent
Brest, France Recruiting -
Clinique Pasteur
Toulouse, France Recruiting -
Centre de cancérologie Les Dentellières
Valenciennes, France Recruiting -
University Hospitals of Derby & Burton NHS Foundation Trust
Derby, Derbyshire, United Kingdom Recruiting -
The Clatterbridge Cancer Centre NHS Foundation Trust
Liverpool, United Kingdom Recruiting -
Royal Free London
London, United Kingdom Recruiting
Show 2 more locations
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Maidstone & Tunbridge Wells NHS Trust
Maidstone, United Kingdom Recruiting -
Norfolk & Norwich University Hospital NHS Foundation Trust
Norwich, United Kingdom Recruiting
Similar studies
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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.