A Study of HR+/HER2- Metastatic Breast Cancer Patients Treated With Palbociclib Together With an Aromatase Inhibitor From 2017 to 2023 in Denmark.

Completed

• Conditions: Breast Cancer
• Interventions: Drug: Palbociclib in combination with AI

• Registration Number: NCT06307457
• Lead Sponsor: Pfizer

Brief Summary

The purpose of this study is to describe the effect of the medicine palbociclib when given together with an aromatase inhibitor for treatment of breast cancer. The study will consider participants who:

* have advanced or metastatic breast cancer that is spread to other parts of the body.

* have HR+/HER2- (hormone receptor positive\* / human epidermal growth factor receptor 2 negative\*\*) breast cancer types.

* Hormone receptor positive (HR+): are cells that have a group of proteins that bind to a specific hormone. For example, some breast cancer cells have receptors for the hormones estrogen or progesterone.

These cells are hormone receptor positive, and they need estrogen or progesterone to grow. This can affect how the cancer is treated. Knowing if the cancer is hormone receptor positive may help plan treatment.

* Human epidermal growth factor receptor 2 negative (HER2-): cells that have a small amount or none of a protein called HER2 on their surface. In normal cells, HER2 helps control cell growth. Cancer cells that are HER2 negative may grow more slowly and are less likely to recur (come back) or spread to other parts of the body than cancer cells that have a large amount of HER2 on their surface. Checking to see if a cancer is HER2 negative may help plan treatment.

* have started treatment in the period between January 2017 and December 2021.

The study will describe the treatment effect for different patient groups in terms of age and comorbidities. Comorbidity is the condition of having two or more diseases at the same time. The data is collected by the Danish Breast Cancer Group in the period between 2017 to 2023.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2024-03-05
• Study Start: 2024-03-11
• Study First Submitted QC: 2024-03-11
• Study First Posted: 2024-03-12
• Status Verified: 2024-04
• Primary Completion: 2024-04-19
• Study Completion: 2024-04-19
• Last Update Submitted: 2024-04-30
• Last Update Posted: 2024-05-02

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 1

Inclusion Criteria

• Patients with breast cancer (ICD-10: C50)
• A diagnosis of HR+/HER2- locally advanced or metastatic breast cancer
• Endocrine sensitive, endocrine resistant, or de novo mBC patient
• Inclusion date: Date of relapse/stage IV disease/progression leading to initiation of palbociclib+AI

Exclusion Criteria

• There are no exclusion criteria for this study

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Palbociclib in combination with AI	Palbociclib in combination with AI	Patients with HR+/HER2- locally advanced or metastatic breast cancer treated with palbociclib in combination with AI, in Denmark.

Primary Outcome Measures

Name	Time	Method
Progression-free Survival (PFS) of all mBC patients receiving palbociclib in combination with AI as first-line treatment	01 Jan 2017 - 31 Dec 2023	PFS is defined as the date of relapse or stage IV disease (index date) to progression or death, whichever occurs first.; * Patients will be censored for PFS by 31 December 2023; * Progression of disease is based on scans and blood testing results.
Overall Survival (OS) of all mBC patients receiving palbociclib in combination with AI as first-line treatment	01 Jan 2017 - 31 Dec 2023	OS is defined as the date of relapse or stage IV disease (index date) until death of any cause.; - Patients will be censored for OS by 31 December 2023.

Secondary Outcome Measures

Name	Time	Method
PFS in mBC patients below 65 years of age receiving palbociclib + AI as first-line treatment	01 Jan 2017 - 31 Dec 2023	PFS is defined as the date of relapse or stage IV disease (index date) to progression or death, whichever occurs first.; * Patients will be censored for PFS by 31 December 2023; * Progression of disease is based on scans and blood testing results.
PFS in mBC patients 75+ years of age receiving palbociclib + AI as first-line treatment	01 Jan 2017 - 31 Dec 2023	PFS is defined as the date of relapse or stage IV disease (index date) to progression or death, whichever occurs first.; * Patients will be censored for PFS by 31 December 2023; * Progression of disease is based on scans and blood testing results.
OS in mBC patients below 65 years of age receiving palbociclib + AI as first-line treatment	01 Jan 2017 - 31 Dec 2023	OS is defined as the date of relapse or stage IV disease (index date) until death of any cause.; - Patients will be censored for OS by 31 December 2023.
OS in mBC patients 75+ years of age receiving palbociclib + AI as first-line treatment	01 Jan 2017 - 31 Dec 2023	OS is defined as the date of relapse or stage IV disease (index date) until death of any cause.; - Patients will be censored for OS by 31 December 2023.
PFS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into type of comorbidity: Psychiatric disease	01 Jan 2017 - 31 Dec 2023	PFS is defined as the date of relapse or stage IV disease (index date) to progression or death, whichever occurs first.; * Patients will be censored for PFS by 31 December 2023; * Progression of disease is based on scans and blood testing results. Comorbidity: Psychiatric disease
PFS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment no comorbidity	01 Jan 2017 - 31 Dec 2023	No comorbidity from the five main disease groups: Cardiac disease, Vascular disease, Metabolic disease, Psychiatric disease, Blood and lymphatic system.
PFS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment with two or more comorbidities	01 Jan 2017 - 31 Dec 2023	Two or more comorbidities from the five main disease groups: Cardiac disease, Vascular disease, Metabolic disease, Psychiatric disease, Blood and lymphatic system.
PFS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into CCI point score of 1	01 Jan 2017 - 31 Dec 2023	Patients with a CCI score of 1 defines patients with one comorbidity of the type with a score of 1, e.g., myocardial infarction or diabetes mellitus.
PFS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into CCI point score of 3 or higher (3+)	01 Jan 2017 - 31 Dec 2023	Patients with a CCI score of 3 or higher (3+) defines patients with severe comorbidity/ies having one comorbidity with a CCI score of 6, e.g., HIV/AIDS, or two or more comorbidities each with CCI scores of 1-2. These comorbidities are also besides the patients' breast cancer disease.
OS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment one comorbidity	01 Jan 2017 - 31 Dec 2023	One comorbidity from the five main disease groups: Cardiac disease, Vascular disease, Metabolic disease, Psychiatric disease, Blood and lymphatic system.
OS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment with two or more comorbidities	01 Jan 2017 - 31 Dec 2023	Two or more comorbidities from the five main disease groups: Cardiac disease, Vascular disease, Metabolic disease, Psychiatric disease, Blood and lymphatic system.
PFS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into type of comorbidity: Vascular disease	01 Jan 2017 - 31 Dec 2023	PFS is defined as the date of relapse or stage IV disease (index date) to progression or death, whichever occurs first.; * Patients will be censored for PFS by 31 December 2023; * Progression of disease is based on scans and blood testing results. Comorbidity: Vascular disease
Age distribution in the full data set of mBC patients receiving palbociclib + AI as first-line treatment	01 Jan 2017 - 31 Dec 2023
OS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into CCI point score of 0	01 Jan 2017 - 31 Dec 2023	Patients with a CCI score of 0 defines patients with no comorbidity besides the breast cancer disease
OS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into CCI point score of 3 or higher (3+)	01 Jan 2017 - 31 Dec 2023	Patients with a CCI score of 3 or higher (3+) defines patients with severe comorbidity/ies having one comorbidity with a CCI score of 6, e.g., HIV/AIDS, or two or more comorbidities each with CCI scores of 1-2. These comorbidities are also besides the patients' breast cancer disease.
PFS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into type of comorbidity: Cardiac disease	01 Jan 2017 - 31 Dec 2023	PFS is defined as the date of relapse or stage IV disease (index date) to progression or death, whichever occurs first.; * Patients will be censored for PFS by 31 December 2023; * Progression of disease is based on scans and blood testing results. Comorbidity: Cardiac disease
PFS in mBC patients between 65-74 years of age receiving palbociclib + AI as first-line treatment	01 Jan 2017 - 31 Dec 2023	PFS is defined as the date of relapse or stage IV disease (index date) to progression or death, whichever occurs first.; * Patients will be censored for PFS by 31 December 2023; * Progression of disease is based on scans and blood testing results.
OS in mBC patients between 65-74 years of age receiving palbociclib + AI as first-line treatment	01 Jan 2017 - 31 Dec 2023	OS is defined as the date of relapse or stage IV disease (index date) until death of any cause.; - Patients will be censored for OS by 31 December 2023.
PFS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into Charlson Comorbidity Index (CCI) point score of 0	01 Jan 2017 - 31 Dec 2023	Patients with a CCI score of 0 defines patients with no comorbidity besides the breast cancer disease
PFS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into CCI point score of 2	01 Jan 2017 - 31 Dec 2023	Patients with a CCI score of 2 defines patients with two comorbidities each having a score of 1 or one comorbidity alone with a CCI score of 2, e.g., diabetes mellitus with organ damage or a solid tumor besides breast cancer disease.
OS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into CCI point score of 1	01 Jan 2017 - 31 Dec 2023	Patients with a CCI score of 1 defines patients with one comorbidity of the type with a score of 1, e.g., myocardial infarction or diabetes mellitus.
OS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into CCI point score of 2	01 Jan 2017 - 31 Dec 2023	Patients with a CCI score of 2 defines patients with two comorbidities each having a score of 1 or one comorbidity alone with a CCI score of 2, e.g., diabetes mellitus with organ damage or a solid tumor besides breast cancer disease.
PFS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment one comorbidity	01 Jan 2017 - 31 Dec 2023	One comorbidity from the five main disease groups: Cardiac disease, Vascular disease, Metabolic disease, Psychiatric disease, Blood and lymphatic system.
OS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment no comorbidity	01 Jan 2017 - 31 Dec 2023	No comorbidity from the five main disease groups: Cardiac disease, Vascular disease, Metabolic disease, Psychiatric disease, Blood and lymphatic system.
PFS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into type of comorbidity: Metabolic disease	01 Jan 2017 - 31 Dec 2023	PFS is defined as the date of relapse or stage IV disease (index date) to progression or death, whichever occurs first.; * Patients will be censored for PFS by 31 December 2023; * Progression of disease is based on scans and blood testing results. Comorbidity: Metabolic disease
PFS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into type of comorbidity: Blood and lymphatic system	01 Jan 2017 - 31 Dec 2023	PFS is defined as the date of relapse or stage IV disease (index date) to progression or death, whichever occurs first.; * Patients will be censored for PFS by 31 December 2023; * Progression of disease is based on scans and blood testing results. Comorbidity: Blood and lymphatic system
OS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into type of comorbidity: Psychiatric disease	01 Jan 2017 - 31 Dec 2023	OS is defined as the date of relapse or stage IV disease (index date) until death of any cause.; - Patients will be censored for OS by 31 December 2023. Comorbidity: Psychiatric disease
OS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into type of comorbidity: Cardiac disease	01 Jan 2017 - 31 Dec 2023	OS is defined as the date of relapse or stage IV disease (index date) until death of any cause.; - Patients will be censored for OS by 31 December 2023. Comorbidity: Cardiac disease
OS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into type of comorbidity: Vascular disease	01 Jan 2017 - 31 Dec 2023	OS is defined as the date of relapse or stage IV disease (index date) until death of any cause.; - Patients will be censored for OS by 31 December 2023. Comorbidity: Vascular disease
OS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into type of comorbidity: Metabolic disease	01 Jan 2017 - 31 Dec 2023	OS is defined as the date of relapse or stage IV disease (index date) until death of any cause.; - Patients will be censored for OS by 31 December 2023. Comorbidity: Metabolic disease
OS in the full dataset of mBC patients receiving palbociclib + AI as first-line treatment split into type of comorbidity: Blood and lymphatic system	01 Jan 2017 - 31 Dec 2023	OS is defined as the date of relapse or stage IV disease (index date) until death of any cause.; - Patients will be censored for OS by 31 December 2023. Comorbidity: Blood and lymphatic system

Trial Locations

Locations (1)

Copenhagen University Hospital, Rigshospitalet; 🇩🇰 Copenhagen, Denmark