Molecular and Cellular Analysis of Breast Cancer

November 20, 2025 updated by: Kathleen Horst, Stanford University
The purpose of the study is to investigate the different types and subtypes of cells found in breast tumors. The investigators will do this using a variety of molecular analysis tools that may allow for improved tests. The different types of cells in breast cancer impacts the way individuals respond to various treatments.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

145

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • California
      • Stanford, California, United States, 94305
        • Stanford University Cancer Institute

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 minutes and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

breast cancer patients at Stanford Cancer Center

Description

Inclusion Criteria:

  1. Histologically proven diagnosis of breast cancer or a carcinoma of unknown primary consistent with the presentation of a primary breast malignancy.
  2. 18 years of age or older.
  3. Ability to understand and the willingness to sign a written informed consent do

Exclusion Criteria:

  • None

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
levels of GM-CSF in plasma
Time Frame: 10 years
We will be measuring levels of GM-CSF (Granulocyte-macrophayge colony stimulating factor) from the plasma of the patient before during and after the irradiation treatment to study if there is any increase in the GM-CSF production
10 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Stanford University

Investigators

  • Principal Investigator: Kathleen Horst, Stanford University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

September 10, 2014

Primary Completion (Actual)

April 19, 2021

Study Completion (Actual)

April 19, 2021

Study Registration Dates

First Submitted

September 15, 2014

First Submitted That Met QC Criteria

September 16, 2014

First Posted (Estimated)

September 17, 2014

Study Record Updates

Last Update Posted (Estimated)

November 26, 2025

Last Update Submitted That Met QC Criteria

November 20, 2025

Last Verified

November 1, 2025

More Information

Terms related to this study

Other Study ID Numbers

  • IRB-29691
  • BRS0040

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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