Phase I Dose Escalation Trial of Single Fraction Adjuvant Stereotactic Body Partial Breast Irradiation (SB-PBI) For Early Stage Breast Cancer

University of Texas Southwestern Medical Center2 sites in 1 country30 target enrollmentMarch 31, 2016

ConditionsEarly Stage Breast Cancer

Overview

Phase: Phase 1
Intervention: Not specified
Conditions: Early Stage Breast Cancer
Sponsor: University of Texas Southwestern Medical Center
Enrollment: 30
Locations: 2
Primary Endpoint: maximum tolerated dose
Status: Active, not recruiting
Last Updated: 9 months ago

Overview Investigators Eligibility Criteria Outcomes Sites Similar Trials

Overview

Brief Summary

Radiation, Stereotactic Body Radiation Therapy.

Detailed Description

In this protocol, we plan to use the uniqueness of the Cyberknife system to deliver an adjuvant single fraction radiation dose. We anticipate that this radiation deliver system will reduce toxicity and improve cosmesis. Extrapolating from an intra-operative body of work, this Phase I study will attempt to achieve a non-invasive low toxicity profile and maintain good to excellent cosmesis. In this effort, the Cyberknife system will be used to achieve high conformality and dose gradient.

Registry

clinicaltrials.gov

Start Date

March 31, 2016

End Date

June 1, 2026

Last Updated

9 months ago

Study Type

Interventional

Study Design

Sequential

Sex

Female

Investigators

Sponsor

University of Texas Southwestern Medical Center

Responsible Party

Principal Investigator

Asal Rahimi

ASSOC PROFESSOR

University of Texas Southwestern Medical Center

Eligibility Criteria

Inclusion Criteria

•Ductal carcinoma in situ (DCIS) or invasive epithelial (ductal, medullary, papillary, mucinous (colloid), or tubular histologies
•Willing and able to provide consent
•Age \>=18 years.
•Performance status Eastern Cooperative Oncology Group (ECOG) 0-2
•Women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, and for 90 days following completion of therapy. Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately.
•Appropriate staging studies identifying as American Joint Committee on Cancer (AJCC) stage 0, I, or II breast cancer. If stage II, the tumor size must be 3 cm or less.
•Surgical treatment of the breast with lumpectomy Clinical Target Volume (CTV) margin up to 5 cm in maximum dimension with histologically confirmed margins free of tumor (negative margins defined as no tumor on ink in all directions). Re-excision of surgical margins is permitted.
•Gross disease within the breast must be unifocal. (Patients with microscopic multifocality are eligible as long as the total extent of tumor, gross and microscopic, occupies a volume with greatest dimension 3 cm or less)
•Patients with invasive disease are required to have axillary staging including: sentinel node biopsy alone if sentinel node is negative, sentinel node biopsy followed by axillary dissection with a minimum of 6 axillary nodes sampled if sentinel node is positive, or axillary dissection alone (with a minimum of 6 axillary nodes). Patients with DCIS are not required to have axillary staging.
•Patients with a history of non-breast invasive malignancies are eligible if they have been disease-free for 1 or more years prior to entry into the study

Exclusion Criteria

•T2 (\>3.0 cm), T3, stage III, or stage IV breast cancer
•More than 3 histologically positive axillary lymph nodes or axillary lymph nodes with microscopic or macroscopic extracapsular extension.
•Positive non-axillary sentinel nodes or evidence of suspicious supraclavicular, infraclavicular, or internal mammary nodes by imaging or physical exam, unless biopsied and found to be negative for tumor.
•Evidence by physical examination or mammography of other suspicious masses, densities, or microcalcifications in either breast, unless biopsied and found to be benign.
•Non epithelial breast malignancies such as sarcoma or lymphoma.
•Multicentric gross breast carcinoma (either DCIS or invasive cancer) or microscopic breast carcinoma occupying a volume with maximum dimensions of more than 3 centimeters.
•Synchronous bilateral invasive or non-invasive breast cancer.
•Paget's disease of the nipple.
•Previous breast radiation on ipsilateral side or thoracic radiation on the ipsilateral side.
•Treatment plan that includes regional nodal irradiation.