Biomarkers and Clinical Features of Metastatic Breast Cancer in Patients Treated With CDK4/6 Inhibitors

Roswell Park Comprehensive Cancer Center

Status: Enrolling

Conditions: Anatomic Stage IV Breast Cancer AJCC v8; Prognostic Stage IV Breast Cancer AJCC v8; Metastatic Breast Carcinoma

Treatments: Other: Cytology Specimen Collection Procedure; Other: Diagnostic Laboratory Biomarker Analysis; Other: Medical Chart Review

Study type: Observational

Funder types: Other

Identifiers

NCT04526587

I 571719 (Other Identifier)

NCI-2020-05682 (Registry Identifier)

Details and patient eligibility

About

This study investigates the clinical course of CDK4/6 inhibitor treated patients in the real-world setting among patients with breast cancer. CDK4/6 inhibitors may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Studying samples of blood, tissue, ascites or pleural effusions, and fresh body fluids or fresh biopsy, from patients with breast cancer that has spread to the other places in the body (metastatic) may help doctors learn more about cancer and the development of drug resistance in patients, and predict how well patients will respond to treatment.

Full description

PRIMARY OBJECTIVES:

I. Delineate clinical features of disease progression and responses to subsequent therapy following progression on ciclib-based therapy.

II. Define pharmacogenomics relationships that could provide a more precise approach to drug dosing.

III. Interrogate biomarkers related to response and acquired resistance in standard clinical practice.

IV. Develop patient-derived models from resistant disease to functionally assess the mechanisms occurring with resistance.

V. Elucidate the socio-demographic features related to the use of ciclibs clinically in the Roswell Park catchment area.

OUTLINE:

Patients electronic medical records are reviewed to capture clinical information, and patients undergo collection of blood, tissue, ascites or pleural effusions, and fresh body fluids or fresh biopsy samples for diagnosis/treatment decision, biomarker assessments, and description of mechanisms of resistance/response related to ciclib-therapy.

Enrollment: 400 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• All adult patients with ER+/HER2- metastatic breast cancer or HR+/HER2-node positive, high risk early breast cancer who are being or have been treated with ciclib-based therapies are eligible for inclusion in this study

  • This includes patients receiving standard of care therapy for ER+/HER2- metastatic breast cancer, as well as those who would be eligible to participate in a non-interventional study while on a clinical study open at Roswell Park or St. Vincent's Hospital
  • Screening will occur in breast oncology clinic, by review of patient medical records for the pending, ongoing, or past treatment with ciclib-based therapy

• Participant must understand the prospective nature of this study and sign an Independent Ethics Committee/Institutional Review Board approved written informed consent form

Exclusion criteria

• Pregnant of nursing female subjects
• Unwilling or unable to follow protocol requirements

Trial design

400 participants in 1 patient group

Basic science (medical chart review, biospecimen collection)

Description:

Patients electronic medical records are reviewed to capture clinical information, and patients undergo collection of blood, tissue, ascites or pleural effusions, and fresh body fluids or fresh biopsy samples for diagnosis/treatment decision, biomarker assessments, and description of mechanisms of resistance/response related to ciclib-therapy.

Treatment:

Other: Medical Chart Review

Other: Diagnostic Laboratory Biomarker Analysis

Other: Cytology Specimen Collection Procedure