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A Phase II Trial Assessing the Accuracy of Tumor Bed Biopsies in Predicting Pathologic Response in Patients with Clinical/Radiologic Complete Response after Neoadjuvant Chemotherapy in Order to Explore the Feasibility of Breast Conserving Treatment without Surgery

Status
Temporarily Closed
Cancer Type
Breast Cancer
Trial Phase
Phase II
Eligibility
18 and over, Male and Female
Study Type
Diagnostic
NCT ID
NCT03188393
Protocol IDs
NRG-BR005 (primary)
NCI-2016-01825
Study Sponsor
NRG Oncology

Summary

This phase II trial studies how well biopsy of breast after chemotherapy works in predicting pathologic response in patients with stage II-IIIA breast cancer undergoing breast conserving surgery. Tumor tissue collected from biopsy before surgery may help to check if chemotherapy destroyed the breast cancer cells and may be compared to the tumor removed during surgery to check if they are the same.

Objectives

PRIMARY OBJECTIVES:

I. To assess the accuracy of post-neoadjuvant systemic therapy (NST) image-directed tumor bed biopsy for pathologic complete response (pCR), defined as resolution of both invasive disease and ductal carcinoma in situ (DCIS), in cases of clinical and radiologic complete response with trimodality imaging.

SECONDARY OBJECTIVES:

I. To collect axillary pathology results, surgical staging methods (sentinel lymph node biopsy and/or axillary lymph node dissection), and management (surgery and/or radiation) in order to determine axillary nodal response to neoadjuvant chemotherapy and its relationship to breast pCR.

II. To correlate imaging results with pathologic nodal status following neoadjuvant chemotherapy for future planning of axillary management in the next study.

III. To retrospectively assess the negative predictive value (NPV) of a trimodality imaging algorithm in combination with the tumor bed biopsy for predicting pCR.

IV. To collect all trimodality imaging data to determine which combination of the trimodality imaging best identifies the group achieving pCR.

V. To correlate the number of needle cores and tumor bed clip retrieval with the NPV of the tumor site biopsy.

VI. To determine the clinical, imaging, pathologic, and molecular tumor factors associated with the highest NPVs of post-NST tumor bed biopsies.

VII. To improve identification and selection of patients with breast and possible axillary pCR for future trial planning, routine biomarkers (estrogen receptor [ER], progesterone receptor [PR], HER2 neu, and Ki67) will be collected to allow comparison to image/clinical complete response (CR), and tumor bed biopsies.

OUTLINE:

After completion of neoadjuvant therapy, patients undergo stereotactic biopsy of breast tumor any time prior to breast conserving surgery. Patients then undergo breast conserving surgery as per standard of care. Patients may also undergo postoperative radiation therapy per standard of care or adjuvant therapy at the investigator's discretion.

Treatment Sites in Georgia

Emory Saint Joseph's Hospital


5665 Peachtree Dunwoody Road NE
Atlanta, GA 30342
www.emoryhealthcare.org

Emory University Hospital - Midtown


550 Peachtree Street NE
Atlanta, GA 30308
404-686-4411
www.emoryhealthcare.org

Winship Cancer Institute of Emory University


1365 Clifton Road NE
Building C
Atlanta, GA 30322
404-778-5180
winshipcancer.emory.edu

**Clinical trials are research studies that involve people. These studies test new ways to prevent, detect, diagnose, or treat diseases. People who take part in cancer clinical trials have an opportunity to contribute to scientists’ knowledge about cancer and to help in the development of improved cancer treatments. They also receive state-of-the-art care from cancer experts... Click here to learn more about clinical trials.
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