Recruiting

Observational Study

Sponsor:

PreludeDx

Code:

NCT03448926

Conditions

DCIS

Stage 0 Breast Cancer

Ductal Breast Carcinoma In Situ

Eligibility Criteria

Sex: Female

Age: 30 - 70+

Healthy Volunteers: Not accepted

Interventions

Treatment recommendation surveys

7-gene biosignature

Study Details

Brief summary:

This is a prospective, non-interventional (observational) cohort study conducted within the medical network of the participating investigators and institutions. Patients meeting the eligibility criteria (see below) will be eligible for participation and the investigators will obtain written informed consent. A central Institutional Review Board (IRB), WCG IRB, will approve the protocol and each participating institution.

Conditions

DCIS

Stage 0 Breast Cancer

Ductal Breast Carcinoma In Situ

Study ID

NCT03448926

Start date

Feb 27, 2018

Status verified date

Apr, 2026

Completion date

Dec, 2036

Anticipated

Primary completion date

Dec, 2026

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: Female

Age: 30 - 70+

Healthy Volunteers: Not accepted

Inclusion criteria

1. Patient must have histologically confirmed ductal carcinoma in situ (DCIS) in a single breast (presence of lobular carcinoma in situ (LCIS) or other benign breast disease in addition to DCIS is acceptable).
2. Patient must have the DCISionRT test ordered during routine patient care.
3. Patient must be eligible for or have recently completed breast conserving surgery.
4. Patient must be eligible to receive radiation and/or systemic treatment.
5. Patient must be 30 to 85 years old.
6. Patient must have tumor size of less than 6 cm.
7. Patient must have been diagnosed with DCIS within 120 days of consent.

Exclusion criteria

1. Patient tissue is insufficient to generate DCISionRT test results or required DCISionRT inputs (age, tumor size, margin status, palpability) are missing.
2. Patient has evidence of invasive breast cancer, including microinvasion, lymph node involvement, or Paget's disease of the nipple or suspicious mammogram findings in the lymph nodes or contralateral breast.
3. Patient has been surgically treated with an ipsilateral mastectomy for primary DCIS.
4. Patient has had any prior ipsilateral or contralateral breast DCIS or invasive breast cancer.
5. Patient has a prior history of in-field radiation in the ipsilateral breast.
6. Patient has had prior systemic endocrine or chemotherapy prior to testing.
7. Patient is pregnant.

Study Design

Enrollment

3000 participants

Anticipated

Interventions and Outcome Measures

Arms

DCIS

Patients must have histologically confirmed ductal carcinoma in situ (DCIS) in a single breast without evidence of invasive cancer (presence of lobular carcinoma in situ (LCIS) or other benign breast disease in addition to DCIS is acceptable)

Interventions

Treatment recommendation surveys

Treatment Recommendation Surveys are completed by the treating physicians before and after receiving results from the DCISionRT test, which is prognostic for risk of recurrence over 10 years and predictive for benefit from radiation therapy.

7-gene biosignature

Ordering the 7-gene biosignature assay (DCISionRT) as a part of routine care for DCIS is a prerequisite (inclusion criterion) for the study. The study is not designed to determine the efficacy of the assay, rather it is designed to meausre the impact of the assay results on treatment decisions for patients with DCIS.

Primary outcome measure

  • Percent of Cases with Changes in Treatment Recommendation [ Time Frame: From enrollment to the beginning of treatment. ]

Central Contacts and Locations

Central contacts

Locations

Arizona Center for Cancer Care

Recruiting

Scottsdale, Arizona, United States, 85258

Contacts

Principal Investigator:

Anushka Patel, MD

University of California San Diego

Recruiting

La Jolla, California, United States, 92093

Contacts

Principal Investigator:

Dominique Rash, MD

Sutter Health

Recruiting

San Mateo, California, United States, 94401

Contacts

Principal Investigator:

Dhara MacDermed, MD

University of Colorado Anschutz Medical Campus

Recruiting

Aurora, Colorado, United States, 80045

Contacts

Principal Investigator:

Sarah Tevis, MD

Baptist MD Anderson Cancer Center

Recruiting

Jacksonville, Florida, United States, 32207

Contacts

Principal Investigator:

Laila Samiian, MD

BayCare Health System

Recruiting

Tampa, Florida, United States, 33607

Contacts

Principal Investigator:

Nitesh Paryani, MD

University of South Florida

Recruiting

Tampa, Florida, United States, 33613

Contacts

Principal Investigator:

Abigail Beard, MD

Emory University Winship Cancer Institute

Recruiting

Atlanta, Georgia, United States, 30322

Contacts

Principal Investigator:

Monica Rizzo, MD

Endeavor Health (Northshore)

Recruiting

Evanston, Illinois, United States, 60201

Contacts

Principal Investigator:

Katharine Yao, MD

MedStar Health Research Institute

Recruiting

Baltimore, Maryland, United States, 21237

Contacts

Principal Investigator:

Patricia Wehner, MD

Dana-Farber Cancer Institute

Recruiting

Boston, Massachusetts, United States, 02115

Contacts

Principal Investigator:

Jennifer Bellon, MD

Corewell Health William Beaumont University Center

Recruiting

Royal Oak, Michigan, United States, 48073

Contacts

Principal Investigator:

Nayana Dekhne, MD

Comprehensive Breast Care

Recruiting

Troy, Michigan, United States, 48098

Contacts

Principal Investigator:

Rick Brown, MD

Washington University School of Medicine

Recruiting

St Louis, Missouri, United States, 63110

Contacts

Principal Investigator:

Julie Margenthaler, MD

Maimonides Cancer Center

Recruiting

Brooklyn, New York, United States, 11220

Contacts

Principal Investigator:

Patrick Borgen, MD

Northwell Health Center for Advanced Medicine

Recruiting

Lake Success, New York, United States, 11042

Contacts

Principal Investigator:

Brianna Jones, MD

NYU - Long Island

Recruiting

Mineola, New York, United States, 11501

Contacts

Principal Investigator:

Zhanna Logman, MD

NYU - Manhattan

Recruiting

New York, New York, United States, 10016

Contacts

Principal Investigator:

Freya Schnabel, MD

Columbia University Medical Center

Recruiting

New York, New York, United States, 10032

Contacts

Principal Investigator:

Arith Reyes, MD

Cleveland Clinic Akron General

Recruiting

Akron, Ohio, United States, 44302

Contacts

Principal Investigator:

Susan Hong, MD

Cleveland Clinic Foundation-Taussig Cancer Inst

Recruiting

Cleveland, Ohio, United States, 44195

Contacts

Principal Investigator:

Praveen Pendyala, MD

The Ohio State University

Recruiting

Columbus, Ohio, United States, 43212

Contacts

Principal Investigator:

Doreen Agnese, MD

Compass Oncology

Recruiting

Tigard, Oregon, United States, 97223

Contacts

Principal Investigator:

Tris Arscott, MD

St Luke's University Health Network

Recruiting

Easton, Pennsylvania, United States, 18045

Contacts

Principal Investigator:

Tricia Kelly, MD

Sidney Kimmel Comprehensive Cancer Ctr - Jefferson

Recruiting

Philadelphia, Pennsylvania, United States, 19027

Contacts

Principal Investigator:

Scott Herbert, MD

AHN Allegheny General Hospital

Recruiting

Pittsburgh, Pennsylvania, United States, 15212

Contacts

Principal Investigator:

Bindu Rusia, MD

Nashville Breast Center

Recruiting

Nashville, Tennessee, United States, 37203

Contacts

Principal Investigator:

Eduardo Dias, MD

UT Southwestern Medical Center

Recruiting

Dallas, Texas, United States, 75235

Contacts

Principal Investigator:

Mona Arbab, MD

Baylor College of Medicine

Recruiting

Houston, Texas, United States, 77030

Contacts

Principal Investigator:

Shelly Sharma, MD

Texas Oncology

Recruiting

Plano, Texas, United States, 75093

Contacts

Principal Investigator:

Lynn Canavan, MD

More Information

Sponsor

PreludeDx

Last update posted

Apr 17, 2026

Last verified

Apr, 2026

Keywords

  • DCIS
  • molecular testing
  • risk of recurrence
  • treatment decision
  • decision impact
  • predictive

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-09. This information was provided to ClinicalTrials.gov by PreludeDx on 2026-04-17.