Oncotype DX DCIS: Impact on Radiotherapy Decision Making

NCT ID: NCT06046664

Last Updated: 2023-09-21

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

78 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-07-07

Study Completion Date

2023-12-31

Brief Summary

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Prospective single centre study of patients with DCIS that have undergone breast conservation surgery.

Detailed Description

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This is a single centre (Royal Marsden Hospital - Chelsea and Sutton) non-randomised trial investigating whether the Oncotype DX DCIS score changes the radiotherapy recommendation made by clinical oncologists in patients with low to moderate risk DCIS following breast conserving surgery.

Conditions

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Breast Cancer

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

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DCIS Test

Group Type OTHER

ONCOTYPE DX DCIS test

Intervention Type DIAGNOSTIC_TEST

The Oncotype DX DCIS score, comprised of 12 of the 21 genes of the Oncotype DX Recurrence score, has been developed by Genomic Health Inc.

Two clinical utility studies have now been performed in USA, assessing the value of the Oncotype DX DCIS to clinical decision making (18,19) The first study by Alvarado et al. evaluated the influence of the test in 10 centres and in 115 patients (18). The DCIS score led to a change in the treatment recommendation in 36 patients (31.3%; 26 patients had a change to no radiation and 10 patients had a change to recommend radiation). The second study similarly showed change in recommendations following the Oncotype DX DCIS test in 26.4% of cases. It is unclear what the impact of the DCIS score test would be in the UK.

Interventions

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ONCOTYPE DX DCIS test

The Oncotype DX DCIS score, comprised of 12 of the 21 genes of the Oncotype DX Recurrence score, has been developed by Genomic Health Inc.

Two clinical utility studies have now been performed in USA, assessing the value of the Oncotype DX DCIS to clinical decision making (18,19) The first study by Alvarado et al. evaluated the influence of the test in 10 centres and in 115 patients (18). The DCIS score led to a change in the treatment recommendation in 36 patients (31.3%; 26 patients had a change to no radiation and 10 patients had a change to recommend radiation). The second study similarly showed change in recommendations following the Oncotype DX DCIS test in 26.4% of cases. It is unclear what the impact of the DCIS score test would be in the UK.

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

1. Confirmed diagnosis of DCIS
2. DCIS treated with breast conserving surgery

Exclusion Criteria

1. Prior treatment for DCIS or invasive breast cancer in ipsilateral breast.
2. Patients with contra-indications to radiotherapy, including prior breast radiotherapy
3. Patients who undergo mastectomy for DCIS
4. Age \< 45 years old
5. Patients with \> 25mm DCIS
6. Patients with multifocal DCIS (defined as more than 1 distinct focus of DCIS with at least 50mm of intervening benign tissue)
7. Patients with invasive (including microinvasion) disease
8. Patients with positive axillary nodal disease (including isolated tumour cells)
9. Patients with close (\<1mm) or positive radial margins (unless maximally surgically excised or no further DCIS on re-excision)
10. Patients recommended adjuvant endocrine therapy
Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Royal Marsden NHS Foundation Trust

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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The Royal Marsden NHS Foundation Trust

London, , United Kingdom

Site Status

Countries

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United Kingdom

Other Identifiers

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CCR4963

Identifier Type: -

Identifier Source: org_study_id

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