An Observational Cohort Study to Describe and Compare the Use of Darolutamide, Enzalutamide and Apalutamide and How Well These Work in Men With Non-metastatic Castration-resistant Prostate Cancer (nmCRPC) in Real World Settings
DEAR-EXT
Use of Darolutamide, Enzalutamide and Apalutamide for Non-metastatic Castration-Resistant Prostate Cancer (nmCRPC) - EXTension of the DEAR Real-world Study (NCT05362149)
1 other identifier
observational
1,375
1 country
1
Brief Summary
This is an observational cohort study in men with non-metastatic castration-resistant prostate cancer who received their usual treatment, which is 'Androgen receptor inhibitors' (ARIs) including darolutamide, enzalutamide, and apalutamide. The main purpose of this study is to collect data on the length of time men with nmCRPC continued treatment with darolutamide, enzalutamide, or apalutamide as prescribed by their doctors. Researchers will only include men who had not been treated with any new type of medication that blocks the action of hormones. The data will come from an electronic health record database called Precision Point Specialty (PPS) Prostate Cancer Electronic Medical Record (EMR) for men in the United States of America. EMR data will be verified and supplemented via patient chart review. Data collected will be from January 2019 to September 2023. .
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Aug 2023
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
August 18, 2023
CompletedFirst Posted
Study publicly available on registry
August 28, 2023
CompletedStudy Start
First participant enrolled
August 31, 2023
CompletedPrimary Completion
Last participant's last visit for primary outcome
June 28, 2024
CompletedStudy Completion
Last participant's last visit for all outcomes
October 28, 2024
CompletedJune 12, 2025
June 1, 2025
10 months
August 18, 2023
June 11, 2025
Conditions
Outcome Measures
Primary Outcomes (1)
Time to ARI treatment discontinuation
Retrospective analysis from 01-Aug-2019 to 30 Sep 2023
Secondary Outcomes (5)
Reasons for ARI treatment discontinuation
Retrospective analysis from 01-Aug-2019 to 30 Sep 2023
Proportion of patients, who switched to another ARI therapy
Retrospective analysis from 01-Aug-2019 to 30 Sep 2023
Frequency of adverse events
Retrospective analysis from 01-Aug-2019 to 30 Sep 2023
Time to progression to mCRPC
Retrospective analysis from 01-Aug-2019 to 30 Sep 2023
Dose modification of initial ARI
Retrospective analysis from 01-Aug-2019 to 30 Sep 2023
Study Arms (3)
Apalutamide
Darolutamide
Enzalutamide
Interventions
Eligibility Criteria
Adult men previously not treated with a novel antihormonal agent and starting the initial ARI treatment for nmCRPC during the study period, in US community urology practices
You may qualify if:
- Men diagnosed with prostate cancer.
- Diagnosis of nmCRPC prior to or within 90 days after the first ARI treatment initiation
- Treatment with Darolutamide, Enzalutamide, or Apalutamide initiated for the first time
- Age ≥ 18 years at treatment start
- At least 6 months of Electro-Medical-Record activity after the treatment start unless the patient died earlier than 6 months.
You may not qualify if:
- Evidence of metastatic disease before or 30 days after treatment start
- Prior history of other primary cancers
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Bayerlead
Study Sites (1)
Bayer
Whippany, New Jersey, 07981, United States
Related Links
MeSH Terms
Interventions
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- RETROSPECTIVE
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
August 18, 2023
First Posted
August 28, 2023
Study Start
August 31, 2023
Primary Completion
June 28, 2024
Study Completion
October 28, 2024
Last Updated
June 12, 2025
Record last verified: 2025-06
Data Sharing
- IPD Sharing
- Will not share
Availability of this study's data will later be determined according to Bayer's commitment to the EFPIA/PhRMA "Principles for responsible clinical trial data sharing". This pertains to scope, timepoint and process of data access. As such, Bayer commits to sharing upon request from qualified researchers patient-level clinical trial data, study-level clinical trial data, and protocols from clinical trials in patients for medicines and indications approved in the US and EU as necessary for conducting legitimate research. This applies to data on new medicines and indications that have been approved by the EU and US regulatory agencies on or after January 01, 2014. Interested researchers can use www.vivli.org to request access to anonymized patient-level data and supporting documents from clinical studies to conduct research. Information on the Bayer criteria for listing studies and other relevant information is provided in the member section of the portal.