Partial-Breast Radiation Therapy in Treating Women With Early-Stage Breast Cancer

The Ohio State University

Status and phase

Withdrawn

Phase 2

Conditions

Breast Cancer

Treatments

Radiation: accelerated partial breast irradiation

Procedure: adjuvant therapy

Radiation: intracavitary balloon brachytherapy

Study type

Interventional

Funder types

Other

Identifiers

NCT01008514

OSU-08177

Details and patient eligibility

About

RATIONALE: Internal radiation therapy uses radioactive material placed directly into or near a tumor to kill tumor cells. It may also cause less damage to normal tissue.

PURPOSE: This phase II trial is studying how well partial-breast radiation therapy works in treating women with early-stage breast cancer.

Full description

OBJECTIVES:

Primary

To examine the efficacy of MammoSite® Radiation Therapy System (RTS) in delivering partial-breast irradiation to women with early-stage breast cancer.

Secondary

To assess the toxicities associated with MammoSite® RTS in these patients.
To evaluate the cosmetic results in the breast after brachytherapy with the MammoSite® RTS.
To correlate the cosmetic results with the use of chemotherapy, volume of the implant, and distance from the implant to the skin.
To correlate the local recurrence rate with time between surgery and implant.

OUTLINE: Patients undergo placement of the MammoSite® Radiation Therapy System (RTS) device into the cavity where the tumor was removed either at the time of surgery or percutaneously under ultrasound guidance after surgery. Within 2-5 days after the device implant, patients undergo partial-breast irradiation delivered by MammoSite® RTS twice daily for 5 days.

After completion of study therapy, patients are followed up periodically for 5 years.

Sex

Female

Ages

45+ years old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

DISEASE CHARACTERISTICS:

Histologically confirmed ductal carcinoma in situ (DCIS) of the breast or invasive breast adenocarcinoma
- Stage 0, I, or II (T2, N0; tumor size ≤ 3 cm) disease
- Pathologic staging of the axilla preferred
  - Clinical staging of the axilla allowed for patients ≥ 70 years of age with hormone receptor-positive tumors
Unicentric tumor
- Microscopic multifocality allowed as long as the total tumor size is ≤ 3 cm
Must have undergone lumpectomy as definitive surgery
- Negative surgical margins, defined as no tumor at the inked margin of resection after final surgery
  - Re-excision to obtain negative margins allowed
Must have adequate skin spacing between balloon surface and surface of the skin and lung (≥ 7 mm)
No multicentric carcinoma (invasive or DCIS) in more than one quadrant
No clinically or pathologically positive regional lymph nodes
No extensive intraductal component, defined as DCIS extending beyond the primary invasive component into normal breast parenchyma and composing > 25% of the primary tumor
Hormone receptor status not specified

PATIENT CHARACTERISTICS:

Menopausal status not specified
Not pregnant or nursing
Negative pregnancy test
Fertile patients must use effective contraception
No collagen-vascular disease, including any of the following:
- Dermatomyositis
- Systemic lupus erythematosus
- Scleroderma-mixed connective tissue disease