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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01112254
Other study ID # IGR IRCIS 1503
Secondary ID
Status Completed
Phase Phase 3
First received April 26, 2010
Last updated January 25, 2016
Start date February 2010
Est. completion date June 2015

Study information

Verified date January 2016
Source Gustave Roussy, Cancer Campus, Grand Paris
Contact n/a
Is FDA regulated No
Health authority France: Afssaps - Agence française de sécurité sanitaire des produits de santé (Saint-Denis)
Study type Interventional

Clinical Trial Summary

The purpose of this study is to evaluate the diagnostic performance of MRI±biopsy to optimize resection of Ductal Carcinoma In Situ (DCIS) breast cancer.


Description:

Ductal carcinoma in situ (DCIS) is a frequent disease, concerning more than 15% of all breast carcinomas in France. Frequency increases due to breast screening programs. Breast conservative treatment can be done for limited lesions. Complete pathological excision with safe surgical margins is the main factor of success rate for conservative treatment. But safe surgical margins are not always obtained in the first surgery because preoperative or peroperative evaluation of the extent of the lesions is difficult. A 20 to 38% rate of involved margins is reported in the literature, implying a second surgery. MRI is not commonly performed today in the preoperative staging of DCIS, despite interesting results of breast MRI in DCIS evaluation published recently in a German study (Kuhl, Lancet 2007). Nevertheless, this retrospective study focused on a population of high-risk women (BRCA1-2 mutation carriers, family history of breast cancer…).

Additional suspicious lesions detected by MRI require MRI-guided or CT-guided biopsy as they are not detectable with mammography or ultrasound. Moreover, intraoperative pathological analysis cannot be performed in DCIS and surgical strategy will be different for a unique lesion (lumpectomy) or multiple/large lesions (mastectomy). If surgery is adapted according to MRI and biopsy results, we can assume that the entire lesion could be removed in a single operation, avoiding re-excisions, anxiety and reducing the costs.

The main objective of this protocol is to evaluate the value of MRI+biopsy in the staging of mammography-detected DCIS in an unselected population of women. It is a multicentric, randomised study including patients from France presenting a unique, limited (< 30 mm) DCIS detected by mammography or breast ultrasound. The two compared arms are: preoperative breast MRI+biopsy versus no additional diagnostic examination. High resolution dynamic 3D images will be obtained in order to detect very small suspicious lesions, typical of DCIS. The main endpoint is the re-excision rate for involved margins. In order to show a reduction of 50% of the rate of second surgery (from 25% to 12.5% in the MRI arm), it is necessary to include 360 patients (bilateral test, alpha=5%, power=80%).

A cost-effective study will be performed. The costs likely to differ between the two arms (MRI, biopsy, outpatient visits, hospitalisations, transportation, and sick leaves) will be assessed using data collected in the trial. The endpoint of the cost-effectiveness study will be the cost by success (cost-effectiveness ratio). A success is defined as achieving margin-negative resection after initial surgery (no need for re-excision). The other secondary endpoints will be to determine the rate of initial mastectomy and to describe MRI morphologic features in the MRI+biopsy arm.


Recruitment information / eligibility

Status Completed
Enrollment 360
Est. completion date June 2015
Est. primary completion date June 2015
Accepts healthy volunteers No
Gender Female
Age group 18 Years to 80 Years
Eligibility Inclusion Criteria:

- T0 or T1 breast DCIS revealed by microcalcifications on mammography + breast ultrasound

- Histological confirmation by percutaneous biopsy : strict DCIS or micro-invasive.

- Radiological focus < 30mm and accessible to conservative treatment.

- Single microcalcification focus

- Age : 18 to 80 years old

- Performance Status < 2

- Patient information and signed informed consent.

Exclusion Criteria:

- Invasive carcinoma

- Non biopsiable microcalcification focus under stereotaxy

- Bilateral lesions

- Non feasible MRI (claustrophobic, serious allergy, pace-maker, etc.)

- Refusal of surgery, including mastectomy if necessary

- History of homolateral breast cancer

- patient at risk of breast cancer (BRCA1 or 2 mutation or score 5 INSERM table)

- Pregnant or possibly pregnant or breastfeeding woman

- Person deprived of freedom or under guardianship

- Inability to undergo the medical surveillance of the trial for geographical, social or psychological reasons

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment


Related Conditions & MeSH terms


Intervention

Procedure:
MRI±biopsy
A MRI-guided or CT-guided preoperative biopsy will be performed in case of suspicious enhancement, multiple and large lesions (more than 3 cm for from the initial lesion), which is not viewed on the mammography or breast ultrasound. The surgery type will depends on the MRI +/- ± biopsy results.

Locations

Country Name City State
France Institut Gustave Roussy Villejuif

Sponsors (2)

Lead Sponsor Collaborator
Gustave Roussy, Cancer Campus, Grand Paris National Cancer Institute, France

Country where clinical trial is conducted

France, 

Outcome

Type Measure Description Time frame Safety issue
Primary Re-excision rate After histological confirmation of DCIS by stereotactic biopsy the patients will be randomized. In arm 1, a MRI-guided or CT-guided preoperative biopsy will be performed in case of suspicious enhancement, multiple and large lesions (more than 3 cm from the initial lesion), not viewed on the mammography or breast ultrasound. The surgery type will depends on the MRI ± biopsy results. The patients will be operated without additional exams in arm 2. in the 6 months following randomization No
Secondary Cost-effectiveness study cost by success, success being defined by the absence of re-excision during the 6-month period after randomization. during the 6-month period after randomization No
Secondary Relapse rate at 30 months after randomization No
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