Biomarkers and Clinical Features of Metastatic Breast Cancer in Patients Treated With CDK4/6 Inhibitors
Public ClinicalTrials.gov record NCT04526587. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
The Roswell Park Ciclib Study: A Prospective Study of Biomarkers and Clinical Features of Advanced/Metastatic Breast Cancer Treated With CDK4/6 Inhibitors
Study identification
- NCT ID
- NCT04526587
- Recruitment status
- Recruiting
- Study type
- Observational
- Phase
- Not listed
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Enrollment
- 700 participants
Conditions and interventions
Conditions
Interventions
- Cytology Specimen Collection Procedure Other
- Diagnostic Laboratory Biomarker Analysis Other
- Medical Chart Review Other
Other
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jul 2, 2020
- Primary completion
- Jul 2, 2030
- Completion
- Jul 2, 2035
- Last update posted
- Nov 12, 2025
2020 – 2035
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Roswell Park Cancer Institute | Buffalo | New York | 14263 | Recruiting |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04526587, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Nov 12, 2025 · Synced May 16, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04526587 live on ClinicalTrials.gov.