This Non-Interventional Study will describe and analyze the clinical use of palbociclib in routine clinical practice in the treatment of advanced breast cancer.



Eligible Ages
Over 18 Years
Eligible Genders
Accepts Healthy Volunteers

Inclusion Criteria

  1. Age ≥18 years or older.
  2. Diagnosis of adenocarcinoma of the breast with evidence of metastatic disease or advanced disease not amenable to treatment with curative intent.
  3. Documented HR+ (ER+ and/or PR+) tumor based on local standards.
  4. Documented HER2- tumor based on local standards.
  5. Physician has determined that treatment with palbociclib is indicated.
  6. Evidence of a personally signed and dated informed consent document indicating that the patient has been informed of all pertinent aspects of the study.
  7. Patients who in the opinion of the investigator are willing and able to comply with regular clinic visits as per standard of care practice at the site.

Exclusion Criteria

  1. Patients with a life expectancy of less than 3 months at the time of ABC diagnosis, per the investigator's judgment.
  2. Patients participating in any interventional clinical trial that includes investigational or marketed products at the time of enrollment. (Patients participating in other investigator initiated research or NIS can be included as long as their standard of care is not altered by the study).
  3. Patients on active treatment for malignancies other than ABC at the time of enrollment.
  4. Patients who are unable to understand the nature of the study and are unwilling to sign an informed consent.

Study Design

Study Type
Observational Model
Time Perspective

Arm Groups

ArmDescriptionAssigned Intervention
non-interventional study This prospective, observational study will be conducted according to each site's routine clinical practice.
  • Other: non-interventional

Recruiting Locations

MedStar Washington Hospital Center
Washington, District of Columbia 20037

More Details


Study Contact

Pfizer CT.gov Call Center


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.