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The DISC Pilot study: testing if taking extra tissue during breast surgery helps make treatment more successful

Ductal carcinoma in situ cavity shave (DISC) pilot randomised control trial (RCT): a feasibility study

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN16847894
Enrollment
26
Registered
2026-01-28
Start date
2026-01-09
Completion date
Unknown
Last updated
2026-02-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast cancer Cancer

Interventions

Single-centre interventional single-blinded randomised controlled trial. Random allocation using a computer-generated random allocation program. All staff and patients will be masked to the group al

Sponsors

City St George's, University of London
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
18 Years to 90 Years

Inclusion criteria

Inclusion criteria: 1. Female gender as determined at birth  2. Age 18 years and above  3. Primary breast cancer  4. Unilateral disease  5. Bilateral disease (DCIS in each breast)   6. Unifocal disease in each breast  7. Breast cancer which is DCIS on pre-operative histology, no invasive component  8. First diagnosis of primary breast cancer in that breast 9. Eligible for breast conserving therapy  10. Standard wide local excision technique 11. No previous radiotherapy to the breast     12. Demonstrates capacity to consent as assessed by their primary clinician   13. The perioperative use of any lesion localisation method including but not restricted to metal wires, localisation seeds (Magseed® Endomag), intraoperative use of the Faxitron (free standing x-ray machine) or other specimen x-ray machines

Exclusion criteria

Exclusion criteria: 1. Male gender  2. Patients with multifocal disease that requires mastectomy  3. Communication issues or limited English.  4. Previous breast cancer in the ipsilateral breast that has undergone the following treatments: endocrine therapy, WLE/radiotherapy  5. WLE that would include therapeutic mammoplasty and chest wall perforator flaps 6. Patients undergoing WLE under local anaesthetic  7. Patients that have had previous cosmetic augmentation/corrective surgery or reduction mammoplasty

Countries

England, United Kingdom

Contacts

Public ContactSarah;Buket Tang;Ertansel

;

sarah.tang@stgeorges.nhs.uk;buket.ertansel@stgeorges.nhs.uk+44 02087253082;+44 07734089299

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 15, 2026