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A Pilot Study of CyberKnife Radiosurgery Delivered to the Partial Breast (CK-PBI)

This study has been withdrawn prior to enrollment.
(PI left institution)
Information provided by:
Georgetown University Identifier:
First received: September 12, 2007
Last updated: November 19, 2013
Last verified: November 2013

This pilot study will evaluate the technical feasibility and acute toxicity of Partial Breast Irradiation (PBI) with the CyberKnife in anticipation of a larger multi-institutional Phase II study. It will evaluate quality of life (QOL) issues as they relate to treatment related side effects, cosmetic result, and patient convenience.

Radiosurgery is defined as the stereotactic delivery of ionizing radiation in 5 stages or less to a designated target with sub-millimeter accuracy. Radiosurgery in the context of this protocol will be given to the region of the tumor bed within 7 weeks of lumpectomy and sentinel/axillary node sampling over a period of five to ten days using the CyberKnife (CK). Subjects will receive CK before chemotherapy, if applicable.

Condition Intervention
Breast Cancer
Radiation: CyberKnife Partial Breast Irradiation

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Pilot Study of CyberKnife Radiosurgery Delivered to the Partial Breast for Women With Stage 0, 1, or IIA (<=3cm) Breast Cancer

Resource links provided by NLM:

Further study details as provided by Georgetown University:

Primary Outcome Measures:
  • 1. To evaluate the feasibility of CyberKnife body radiosurgery as the sole radiation therapy for this patient population 2. To evaluate the complication rate of CyberKnife body radiosurgery as the sole radiation therapy for this patient population [ Time Frame: 1 year ]

Secondary Outcome Measures:
  • 1. To evaluate the local control rate of CyberKnife body radiosurgery as the sole radiation therapy for this patient population. 2. To evaluate Quality of Life after CyberKnife body radiosurgery PBI. [ Time Frame: 1 - 5 years ]

Enrollment: 0
Study Start Date: September 2007
Study Completion Date: September 2008
Primary Completion Date: September 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
CyberKnife Partial Breast Irradiation (PBI)
Radiation: CyberKnife Partial Breast Irradiation
Body radiosurgery will be delivered to the lumpectomy cavity with specified margin. Radiation dose will be 600 cGy x 5 stages = 3000 cGy over five to ten total days.


Ages Eligible for Study:   45 Years and older   (Adult, Senior)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • DCIS or infiltrating ductal carcinoma of the breast <= 3cm
  • margins clear by at least 2 mm
  • age >=45 years

Exclusion Criteria:

  • invasive lobular carcinoma
  • multicentric disease
  • nodal metastases
  • breast implants
  • pregnancy
  • connective tissue disease
  Contacts and Locations
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Please refer to this study by its identifier: NCT00529334

United States, District of Columbia
Georgtown University Medical Center
Washington, District of Columbia, United States, 20057
Sponsors and Collaborators
Georgetown University
Principal Investigator: Jefferson EC Moulds, MD Georgetown University
  More Information Identifier: NCT00529334     History of Changes
Other Study ID Numbers: GUMC 2007-153
Study First Received: September 12, 2007
Last Updated: November 19, 2013

Keywords provided by Georgetown University:
Breast Cancer
Partial breast irradiation

Additional relevant MeSH terms:
Breast Neoplasms
Neoplasms by Site
Breast Diseases
Skin Diseases processed this record on May 25, 2017