Patient Derived Breast Cancer Xenografts

This study will use tissue or body fluid acquired during standard procedures that are part of the patient's care for their cancer, such as surgery to remove tumor tissue or needle withdrawal of body fluid containing cancer cells. The tissue or cells will be injected into immune compromised mice and the tissue will be allowed to grow to a tumor 1-1.5 cm size. The tissue will then be extracted and either frozen, embedded in paraffin, or used for engraftment into another generation of mice. The second generation mice will be separated into groups and given various treatments.

Tissue from the participants and from the mouse established tumors, in which the mice have either received treatment or have not received treatment, will be used to evaluate the levels of various genes that assist in regulating cell growth and cell death. The tumor tissue from participants and mice will also be tested for random changes in the genetic material and compared to the participant's blood to determine if any of the changes in the genetic material correlate with better engraftment of the patient tissue in the mice. It is anticipated that 10-30% will have successful engraftment of tumor tissue

Study Overview

• Status: Terminated
• Conditions: Metastatic Breast Cancer

• Study Type: Observational
• Enrollment (Actual): 1

Contacts and Locations

Study Locations

• United States
  • New Hampshire
    • Lebanon, New Hampshire, United States, 03756
      • Dartmouth Hitchcock Medical Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Female

• Sampling Method: Non-Probability Sample

Study Population

Women with invasive breast cancer with metastatic disease seen in Oncology clinic

Description

• Women > age 18. with a history of ER+. HER-2 negative breast cancer previously treated with adjuvant anti-estrogen therapy (tamoxifen or aromatase inhibitor? for at least 1 year after surgical resection of primary tumor.
• ER+ status requires positive staining in > 10% of malignant cells in biopsy specimen.
• HER-2 Negative status requires Immunohistochemistry 0-1+, or with a FISH ratio of < 2.0 if IHC is 2+ or if IHC has not been done.
• Patient must have: A. newly diagnosed recurrent, locally advanced or metastatic breast cancer. B. existing advanced or metastatic breast cancer.
• Patient must be having clinically indicated: A. diagnostic tumor biopsy via core-or needle incision or B. surgical removal of tumor or C. collection of pleural or ascetic fluid in order to obtain fresh tumor tissue for research (transplant into mice).
• For subjects having a diagnostic tumor biopsy, excess fresh tumor tissue must be available from the biopsy for research for immediate transplantation into mice.
• For subjects having a surgical resection of the primary tumor, the tumor must have a clinical size of 1 cm or greater, and and excess fresh tumor tissue must be available from the surgical specimen for research for immediate transplantation into mice.
• Ability to give signed informed consent

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort
Invasive breast cancer with metastatic disease

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Successful Engraftment	Thirty-five patients with breast cancer will be recruited. We anticipate that 10-30% will have successful engraftment of tumor tissue. The achievement of five successful xenografts would justify additional study.	2 years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Time until tumor formation	The rate of tumor growth will be calculated. Mice are monitored three times per week for general health and tumor length. Tumor length Tumor length and width are measured with calipers and recorded. Tumor volume will be calculated with the formula (Length x Width x Width)/2, derived from the formula for the volume of an ellipsoid. Tumor growth will be measured at each time point by calculating the ratio of tumor volume (V) to the initial tumor volume (Vo). Average time, measured in weeks, required for tumors to form palpable masses in F1 mice will be recorded as the Time-until-Tumor-Formation (TTF). A comparison of TTF between tumor cells isolated from tumor tissue isolated by surgical biopsy, and by malignant cells in a body fluid will be compared	2 years

Collaborators and Investigators

• Sponsor: Dartmouth-Hitchcock Medical Center

Study record dates

Study Major Dates

• Study Start: December 1, 2013
• Primary Completion (Actual): August 1, 2014
• Study Completion (Actual): August 1, 2014

Study Registration Dates

• First Submitted: December 12, 2012
• First Submitted That Met QC Criteria: December 12, 2012
• First Posted (Estimate): December 17, 2012

Study Record Updates

• Last Update Posted (Estimate): May 12, 2015
• Last Update Submitted That Met QC Criteria: May 8, 2015
• Last Verified: December 1, 2013

More Information

Terms related to this study

• Keywords: Breast Cancer
• Additional Relevant MeSH Terms: Skin Diseases; Neoplasms; Neoplasms by Site; Breast Diseases; Breast Neoplasms
• Other Study ID Numbers: D12168