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Trial record 1 of 1 for:    Oncotype duchess
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Evaluation of the DCIS Score for Decisions on Radiotherapy in Patients With Low/Intermediate Risk DCIS (DUCHESS)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02766881
Recruitment Status : Completed
First Posted : May 10, 2016
Last Update Posted : February 19, 2020
Information provided by (Responsible Party):
Ontario Clinical Oncology Group (OCOG)

Brief Summary:
To evaluate whether the use of the Oncotype DX DCIS score can guide delivery of radiation in women with low to moderate risk DCIS who have had breast conserving surgery

Condition or disease

Detailed Description:

A prospective cohort study, conducted in Canada, to evaluate whether the use of the DCIS score changes the treatment recommended and the treatment received in women with low to moderate risk DCIS following breast conserving surgery who are candidates for radiation therapy. We plan to study 280 eligible, consenting women who will have their tumour tissue specimen sent to Genomic Health to assess their DCIS score.

At each centre, all patients with DCIS referred to radiation oncology will be documented. When a physician identifies an eligible patient, the patient will be approached by the referring physician or delegate to voluntarily provide informed consent to participate in this study. Consenting patients will be registered through the Ontario Clinical Oncology Group's (OCOG) web-based registration system. Data related to the patient demographics, surgery details, and tumour characteristics will be collected. The preliminary treatment recommendation and patient preference for treatment will be documented. Patient Decisional Conflict will be documented by the patient using the Decisional Conflict Scale (DCS). The patient's tumour specimen will be sent for analysis to Genomic Health. DCIS score results will be sent to the referring physician. OCOG will also receive the DCIS score results. The final treatment recommendation, patient preference, and treatment received by the patient will be documented. Patient decisional conflict will be documented by the patient using the DCS. The study data will be verified by source documentation.

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Study Type : Observational
Actual Enrollment : 281 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Evaluation of the Ductal Carcinoma In Situ Score for Decisions on Radiotherapy in Patients With Low/Intermediate Risk DCIS
Actual Study Start Date : August 2016
Actual Primary Completion Date : June 13, 2019
Actual Study Completion Date : September 30, 2019

Patients with DCIS
Whether patients with DCIS receive radiotherapy based on Oncotype DX DCIS score, radiation oncologist treatment recommendation and patient's decision.

Primary Outcome Measures :
  1. Change in radiotherapy treatment recommendation made by physician [ Time Frame: 2.5 years ]
    The primary outcome is change in treatment recommendation by the radiation oncologist. Physicians will be asked to indicate their preliminary treatment recommendation at the first visit based on clinical factors alone. They will be asked to describe course of radiation including dose and number of fractions. They will then be asked to make a final treatment recommendation when the DCIS score is available. If the physician final recommendation is not consistent with the DCIS score predicted treatment, they will be asked to indicate reasons for their recommendation. If radiation is recommended, they will be asked to indicate the treatment prescription including dose and number of fractions. The actual treatment received by the patient will also be collected.

Secondary Outcome Measures :
  1. Change in radiotherapy treatment preference by patient [ Time Frame: 2.5 years ]
    Secondary outcomes will include change in treatment preference by the patient for radiotherapy and change in recommendations by the physician for hormonal therapy or further surgery. It will also compare physician's prediction of LR with or without radiation that is estimated by the DCIS score. Finally, change in level of patient decisional conflict as measured by DCS will also be collected. The DCS was developed and used to evaluate the effect of decision aids on decision making by health consumers.The assumption was that decision aids would reduce the uncertainty and confusion in choosing a course of action. Decisional conflict is a state of uncertainty about the course of action to take.

Biospecimen Retention:   Samples Without DNA
patient's tumour sample

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   46 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
Prospective cohort study conducted in Ontario in women with a low to moderate risk DCIS following breast conserving surgery who are candidates for radiation. Eligibility status should be confirmed by the referring physician or delegate prior to enrollment. It is important that no exceptions are made to the eligibility criteria. Questions related to eligibility requirements and/or specific criteria should be addressed with OCOG prior to enrollment

Inclusion Criteria:

(1) Women with newly diagnosed breast cancer treated by definitive surgery with histological evidence limited to DCIS.

Exclusion Criteria:

  1. Age < or = 45;
  2. Treated by mastectomy;
  3. Surgical margins of <1mm;(re-excisions may be performed where results are regarded as clear margins, these cases will not exclude patients);
  4. Tumour size >2.5cm;
  5. Any invasive breast cancer including micro invasion;
  6. Histological evidence of multifocality (defined as having more than one distinct focus of DCIS with >5mm of intervening benign breast tissue in one quadrant of the breast);
  7. Any associated lobular carcinoma in situ;
  8. Previous diagnosis of ipsilateral invasive carcinoma or DCIS of the breast;
  9. Any contraindication for whole breast irradiation such as chronic heart or lung disease or previous ipsilateral chest wall radiotherapy;
  10. Physician/patient unwilling to comply with study protocol; and
  11. Inability to provide informed consent (e.g. dementia or severe cognitive impairment).

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02766881

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Canada, Alberta
Tom Baker Cancer Centre
Calgary, Alberta, Canada, T2N 4N2
Cross Cancer Institute
Edmonton, Alberta, Canada, T6G1Z2
Canada, British Columbia
BC Cancer Agency - Vancouver Island
Victoria, British Columbia, Canada, V8R6V5
Canada, Ontario
Royal Victoria Regional Health Centre
Barrie, Ontario, Canada, L4M 6M2
Juravinski Cancer Centre
Hamilton, Ontario, Canada, L8V 5C2
Cancer Centre of Southeastern Ontario at Kingston
Kingston, Ontario, Canada, K7L 5P9
London Regional Cancer Centre
London, Ontario, Canada, N6A4L6
Credit Valley Hospital
Mississauga, Ontario, Canada, L5M2N1
Ottawa Regional Cancer Centre
Ottawa, Ontario, Canada, K1H 8L6
Thunder Bay Regional Health Sciences Centre
Thunder Bay, Ontario, Canada, P7B 6V4
Sunnybrook Odette Cancer Centre
Toronto, Ontario, Canada, M4N 3M5
Princess Margaret Hospital
Toronto, Ontario, Canada, M5G 2M9
Sponsors and Collaborators
Ontario Clinical Oncology Group (OCOG)
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Principal Investigator: Eileen Rakovitch, M.D. Sunnybrook Health Sciences Odette Cancer Centre
Principal Investigator: Tim Whelan, M.D. Juravinski Cancer Centre
Additional Information:
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Responsible Party: Ontario Clinical Oncology Group (OCOG) Identifier: NCT02766881    
Other Study ID Numbers: OCOG-2016-DUCHESS
First Posted: May 10, 2016    Key Record Dates
Last Update Posted: February 19, 2020
Last Verified: August 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: Genomic Health will provide results to referring physician, OCOG will have access to results
Keywords provided by Ontario Clinical Oncology Group (OCOG):
Ductal Carcinoma in Situ
Breast Conserving Surgery
Additional relevant MeSH terms:
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Carcinoma in Situ
Neoplasms, Glandular and Epithelial
Neoplasms by Histologic Type