Epigenetic Testing for Breast Cancer Risk Stratification

Breast Cancer Clinical Trial

Official title:

Epigenetic Testing for Breast Cancer Risk Stratification

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT01501656
• Other study ID #: STU 092011-047
• Secondary ID: BC103910
• Status: Completed
• Phase: N/A
• First received: December 27, 2011
• Last updated: May 31, 2016
• Start date: May 2012
• Est. completion date: November 2014

Study information

• Verified date: May 2016
• Source: University of Texas Southwestern Medical Center
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Food and Drug Administration
• Study type: Observational

Clinical Trial Summary

Promoter region hypermethylation of tumor suppressor genes is one the earliest molecular events in malignant transformation and is readily detectable in apparently normal benign breast epithelium adjacent to breast cancers. The investigators hypothesize that DNA methylation of certain genes occurs as a field change in benign breast tissue that is at high risk for malignant transformation, and as such, can be exploited for tissue-based breast cancer risk stratification. Additional work is required to identify new DNA methylation markers potentially useful for periareolar fine needle aspiration (RP-FNA)-based breast cancer risk stratification, to determine whether these markers are methylated more frequently in benign samples from women who develop breast cancer, to determine whether assessment of these markers is reproducible, to determine whether tamoxifen reduces DNA methylation, and to better understand the pattern of DNA methylation in benign samples from unselected healthy control populations. Each of these objectives contributes to advancement of a clinically useful RP-FNA-based breast cancer risk stratification test.

In addition, identification of genes that are preferentially methylated in estrogen receptor (ER) negative breast cancer will provide clues to the underlying biology responsible for this aggressive form of breast cancer. This knowledge may lead to the discovery of the causes of ER negative breast cancer, approaches for recognizing women at increased risk for this type of breast cancer, and approaches for reducing this risk.

This study seeks to identify patterns of DNA methylation in benign breast epithelial cells associated with an increased risk for breast cancer with a focus on ER negative breast cancer.

Description:

Promoter region hypermethylation of tumor suppressor genes is one the earliest molecular events in malignant transformation and is readily detectable in apparently normal benign breast epithelium adjacent to breast cancers. We hypothesize that DNA methylation of certain genes occurs as a field change in benign breast tissue that is at high risk for malignant transformation, and as such, can be exploited for tissue-based breast cancer risk stratification. Additional work is required to identify new DNA methylation markers potentially useful for periareolar fine needle aspiration (RP-FNA)-based breast cancer risk stratification, to determine whether these markers are methylated more frequently in benign samples from women who develop breast cancer, to determine whether assessment of these markers is reproducible, to determine whether tamoxifen reduces DNA methylation, and to better understand the pattern of DNA methylation in benign samples from unselected healthy control populations. Each of these objectives contributes to advancement of a clinically useful RP-FNA-based breast cancer risk stratification test.

In addition, identification of genes that are preferentially methylated in estrogen receptor (ER) negative breast cancer will provide clues to the underlying biology responsible for this aggressive form of breast cancer. This knowledge may lead to the discovery of the causes of ER negative breast cancer, approaches for recognizing women at increased risk for this type of breast cancer, and approaches for reducing this risk.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 158
• Est. completion date: November 2014
• Est. primary completion date: November 2014
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Female
• Age group: 30 Years to 79 Years

Eligibility

Inclusion Criteria:

• Women between the ages of 30 and 79.

• Untreated stage 1 - 3 invasive breast cancer or a woman never diagnosed with breast cancer.

• BI-RADS 1, 2, or 3 breast imaging within 12 months for women >40 years of age recruited into the control group.

Exclusion Criteria:

• <30 or >80 years of age

• Unable to provide informed consent

• Presence of an undefined palpable or mammographic breast lesion suspicious for malignancy (BIRADS 4 or 5)

• Breast implants

• Bilateral prophylactic mastectomy

• Any prior breasts irradiation

• Any systemic chemotherapy in the past

• Performance status that restricted normal activity for a significant portion of the day

• Use of luteinizing-hormone-releasing-hormone (LHRH) analogs, prolactin inhibitors, antiandrogens, or systemic glucocorticoids within three months

• Ever use of tamoxifen, raloxifene, or other SERMs

• Ever use of aromatase inhibitors

• Pregnancy or lactation within six months

• Bleeding diathesis of any kind

1. Inherited coagulation disorder

2. Current coumadin use

3. Use of drugs that inhibit platelet aggregation within 10 days

Study Design

Observational Model: Cohort, Time Perspective: Prospective

Related Conditions & MeSH terms

• Breast Cancer
• Breast Neoplasms

Locations

Country	Name	City	State
United States	UT Southwestern Medical Center	Dallas	Texas

Sponsors (2)

Lead Sponsor	Collaborator
University of Texas Southwestern Medical Center	United States Department of Defense

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	DNA methylation	This objective assesses methylation of seven genes in 97 archival breast cancer samples.	2 years	No
Secondary	Frequency of methylation	Measure the frequency of methylation of ER positive and ER negative breast cancer-associated genes in benign breast epithelial cells obtained by RP-FNA.	2 years	No