The FLEX Registry will be implemented to operate as a large-scale, population based, prospective registry. All patients with stage I to III breast cancer who receive MammaPrint® and BluePrint testing on a primary breast tumor are eligible for entry into the FLEX Registry, which is intended to enable additional study arms at low incremental effort and cost. FLEX Registry will utilize an adaptive design, where additional targeted substudies and arms can be added after the initial study is opened.



Eligible Ages
Over 18 Years
Eligible Genders
Accepts Healthy Volunteers

Inclusion Criteria

  • Stage I, II, or III patients who receive MammaPrint, with or without BluePrint testing (male or female)
  • Informed consent form signed on the same day or before enrollment
  • New primary lesion

Exclusion Criteria

  • Tumor sample shipped to Agendia with ≤ 30% tumor cells or that fails QA or QC criteria
  • Metastatic disease
  • Recurrent disease
  • Stage 0 disease

Study Design

Study Type
Observational [Patient Registry]
Observational Model
Time Perspective

Arm Groups

ArmDescriptionAssigned Intervention
MammaPrint and BluePrint testing All patients will receive MammaPrint and BluePrint testing using the full-genome testing data chip. Treatment will be at the discretion of the physician while adhering to NCCN guidelines.
  • Diagnostic Test: MammaPrint, BluePrint, and Full-Genome Testing
    Agendia will run MammaPrint and BluePrint tests using the DiscoverPrint testing array.
    Other names:
    • MammaPrint, BluePrint, DiscoverPrint

Recruiting Locations

UT Health Cancer Center
San Antonio, Texas 78229
Lacey McClure

More Details


Study Contact

Sarah Untch, MS

Detailed Description

The FLEX Registry will include all patients with stage I-III breast cancer who have received MammaPrint and BluePrint testing in any clinical setting. Study arm appendices will specify treatment arm, inclusion criteria, and number of patients needed. Approximately 2000 patients from 70-75 US based institutions will be enrolled.

Treatment is at the discretion of the physician adhering to NCCN approved regimens of a recognized alternative.

Clinical data will be collected and entered online at the time points listed: patient enrollment, time of treatment, 1 year post-treatment, and 2, 5, and 10 years post diagnosis.


- Create a large scale, population-based registry of full genome expression data and clinical data to investigate new gene associations with prognostic and/or predictive value

- Utilize shared registry infrastructure to examine smaller groups of interest

- Generate hypotheses for targeted subset analyses and trials based on full genome data

FLEX is an observational (phase IV) study.


Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.