Study to Compare Overall Survival in Medicare Patients With Metastatic Breast Cancer Treated With a Medicine Called Palbociclib in Combination With Aromatase Inhibitor and Aromatase Inhibitor by Itself.

NCT ID: NCT06086340

Last Updated: 2025-11-18

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

779 participants

Study Classification

OBSERVATIONAL

Study Start Date

2023-09-29

Study Completion Date

2024-01-24

Brief Summary

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A retrospective study of de-identified (to preserve patient privacy) patient information from the SEER-Medicare Database to compare overall survival of first line palbociclib + aromatase inhibitor (AI) therapy versus AI therapy alone treatment in women or men aged 65 and older with newly diagnosed hormone receptor positive/human epidermal growth factor receptor 2 negative (HR+/HER2-) metastatic breast cancer (MBC) in the United States

Detailed Description

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Conditions

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Breast Cancer

Study Design

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Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Study Groups

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Palbociclib + AI

Adult metastatic breast cancer patients who initiated Palbociclib + an aromatase inhibitor as first line therapy in SEER-Medicare

Palbociclib

Intervention Type DRUG

Palbociclib with an aromatase inhibitor therapy

Aromatase Inhibitor

Intervention Type DRUG

Aromatase Inhibitor Therapy

AI alone

Adult metastatic breast cancer patients who initiated an aromatase inhibitor (alone) as first line therapy

Aromatase Inhibitor

Intervention Type DRUG

Aromatase Inhibitor Therapy

Interventions

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Palbociclib

Palbociclib with an aromatase inhibitor therapy

Intervention Type DRUG

Aromatase Inhibitor

Aromatase Inhibitor Therapy

Intervention Type DRUG

Other Intervention Names

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Ibrance letrozole, anastrozole, exemestane

Eligibility Criteria

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Inclusion Criteria

* De novo metastatic (stage IV) disease at initial breast cancer diagnosis during 2015-2019
* HR+/HER2- molecular subtype at diagnosis
* Initiated 1L systemic therapy with palbociclib + AI or AI alone

Exclusion Criteria

* Patients will be excluded if their metastatic breast cancer diagnosis was first recorded in a death certificate or at the time of autopsy.
Minimum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Pfizer

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Pfizer CT.gov Call Center

Role: STUDY_DIRECTOR

Pfizer

Locations

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Pfizer New York

New York, New York, United States

Site Status

Countries

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United States

References

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Brufsky AM, Sandin R, Stergiopoulos S, Chen C, Karanth S, Li B, Esterberg E, Makari D, Candrilli SD, Goyal RK, Rugo HS. Overall Survival With Palbociclib and Aromatase Inhibitor Versus Aromatase Inhibitor Alone in Older Patients With HR+/HER2- Metastatic Breast Cancer. Cancer Med. 2025 Apr;14(7):e70719. doi: 10.1002/cam4.70719.

Reference Type DERIVED
PMID: 40145289 (View on PubMed)

Provided Documents

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Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Related Links

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https://pmiform.com/clinical-trial-info-request?StudyID=A5481182

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Other Identifiers

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Henri 3

Identifier Type: OTHER

Identifier Source: secondary_id

A5481182

Identifier Type: -

Identifier Source: org_study_id

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