Enzalutamide vs. Abiraterone in Chemotherapy-naïve Metastatic Castration-resistant Prostate Cancer (mCRPC)

NCT ID: NCT05520138

Last Updated: 2024-09-27

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

5506 participants

Study Classification

OBSERVATIONAL

Study Start Date

2022-08-29

Study Completion Date

2023-06-30

Brief Summary

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This study will be a retrospective data analysis to compare outcomes between patients with chemotherapy-naïve metastatic castration-resistant prostate cancer (mCRPC) who initiated enzalutamide and those who initiated abiraterone using the 100% Fee-For-Service Medicare claims data. The study will address the following objectives:

Primary objective: To compare overall survival (OS) in patients with chemotherapy-naïve mCRPC who initiated enzalutamide vs. abiraterone

Secondary objectives:

* To compare OS in patients with chemotherapy-naïve mCRPC who received only enzalutamide without any subsequent therapy vs. abiraterone without any subsequent therapy
* To compare treatment duration and time to subsequent therapy in chemotherapy-naïve mCRPC patients initiating enzalutamide vs. abiraterone

Detailed Description

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Conditions

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Prostatic Neoplasms, Castration-Resistant

Study Design

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Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Study Groups

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Enzalutamide cohort

Patients with mCRPC initiating enzalutamide

Enzalutamide

Intervention Type DRUG

As provided in real-world setting

Abiraterone cohort

Patients with mCRPC initiating abiraterone

Abiraterone acetate

Intervention Type DRUG

As provided in real-world setting

Interventions

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Enzalutamide

As provided in real-world setting

Intervention Type DRUG

Abiraterone acetate

As provided in real-world setting

Intervention Type DRUG

Other Intervention Names

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Xtandi Yonsa, Zytiga

Eligibility Criteria

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Inclusion Criteria

* Male with ≥ 1 diagnosis claim for prostate cancer
* Have documented secondary metastasis code on or after the initial prostate cancer diagnosis
* Have initiated enzalutamide or abiraterone within 90 days prior to the metastasis date or on or after the metastasis date. The initiation date of enzalutamide or abiraterone will be defined as the index date.
* Have evidence of surgical or medical castration before the index date
* At least 18 years old at the index date
* Continuous eligibility for ≥ 12 months prior to the index date

Exclusion Criteria

* Received chemotherapy, novel hormonal therapy, radium-223, or immunotherapy prior to the index date
* Had a prior history of other cancers
Minimum Eligible Age

18 Years

Eligible Sex

MALE

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 Inc

New York, New York, United States

Site Status

Countries

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United States

Provided Documents

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Document Type: Study Protocol and Statistical Analysis Plan

View Document

Related Links

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https://pmiform.com/clinical-trial-info-request?StudyID=C3431046

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Other Identifiers

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Enza vs Abi rwOS in Medicare

Identifier Type: OTHER

Identifier Source: secondary_id

C3431046

Identifier Type: -

Identifier Source: org_study_id

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