Observational study on palbociclib combinations for metastatic breast cancer

Palbociclib Combinations in HR+/HER2- Metastatic Breast Cancer Patients: A Non-Interventional Prospective Study on the Treatment Patterns & Clinical Outcomes in Africa Middle East (PRECIOUS)

Observational Pfizer · NCT04937660

This study is looking at how well the combination of palbociclib with letrozole or fulvestrant works for people with HR+/HER2- metastatic breast cancer, while also collecting information about their experiences and health in Africa and the Middle East.

Quick facts

Study typeObservational
Enrollment350 (estimated)
Ages18 Years to 90 Years
SexAll
SponsorPfizer Industry-sponsored
Locations12 sites (Alexandria and 11 other locations)
Trial IDNCT04937660 on ClinicalTrials.gov

What this trial studies

This observational multicenter study aims to gather prospective data on patients starting treatment with palbociclib in combination with letrozole or fulvestrant for HR+/HER2- metastatic or locally advanced breast cancer. The study will assess patient demographics, clinical characteristics, treatment history, and quality of life as part of routine clinical practice in Africa and the Middle East. Data will be collected through electronic case report forms, with investigators trained to ensure accurate documentation. The goal is to better understand treatment patterns and clinical outcomes in this patient population.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with HR+/HER2- metastatic or locally advanced breast cancer who are initiating treatment with palbociclib.

Not a fit: Patients currently participating in interventional clinical trials or those receiving active treatment for other malignancies may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance understanding of effective treatment patterns and improve clinical outcomes for patients with HR+/HER2- metastatic breast cancer.

How similar studies have performed: While this study focuses on a specific regional population, similar observational studies have shown success in understanding treatment patterns and outcomes in breast cancer management.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. ≥18 years or older with diagnosis of adenocarcinoma of the breast with evidence of metastatic /locally advanced disease not amenable to treatment with curative intent.
2. Documented HR+ (ER+ and/or PR+) tumor based on local standards
3. Documented HER2- tumor based on local standards
4. Will initiate treatment with palbociclib plus letrozole/aromatase inhibitor or palbociclib plus fulvestrant in line with the licensed indication(s), as first or second line therapy for metastatic/locally advanced BC at enrollment
5. Patients who in the opinion of the investigator are willing and able to comply with regular clinic visits
6. Evidence of a personally signed and dated informed consent document indicating that the patient (or a legally acceptable representative) has been informed of all pertinent aspects of the study

Exclusion Criteria:

1. Patients participating in any interventional clinical trial
2. Patients on active treatment for malignancies other than metastatic/locally advanced BC at the time of enrollment
3. Patients who are unable to understand the nature of the study and are unwilling to sign an informed consent

Where this trial is running

Alexandria and 11 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Metastatic Breast CancerPalbociclibAfricaMiddle East
Last reviewed 2026-06-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.