Metastatic Hormonesensitive Prostate Cancer (mHSPC)
Conditions
Brief summary
This is a retrospective, observational study looking at real-world prescription data in Australia. The study focuses on adult men with metastatic hormone-sensitive prostate cancer (mHSPC), a type of prostate cancer that has spread but still responds to hormone therapy. The main goal is to understand the treatment patterns, characteristics, and outcomes for patients who are receiving a class of drugs called Androgen Receptor Pathway Inhibitors (ARPIs), such as darolutamide, enzalutamide, apalutamide, or abiraterone. These drugs are often used in combination with standard Androgen Deprivation Therapy (ADT). The research will use two large, de-identified Australian prescription databases: the Pharmaceutical Benefits Scheme (PBS) and the NostraData retail pharmacy dataset. By analyzing this information, the study aims to describe how these treatments are being used over time, including what proportion of patients receive doublet therapy (ARPI + ADT) or triplet therapy (ARPI + ADT + docetaxel chemotherapy). It will also describe the characteristics of the patients receiving these therapies, such as their age and location. Secondary goals include understanding how well patients adhere to their prescribed ARPI treatment and tracking any changes in medication dosage over time. Since the study uses existing, anonymized data, there is no direct contact with patients and individual patient consent is not required. The findings will provide valuable real-world insights into the use of ARPIs in Australia, which can help inform clinical practice and improve care for men with mHSPC.
Interventions
None listed
Sponsors
Bayer
Study design
Observational model
COHORT
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Male patients with evidence of mHSPC at any point during the study period. * At least one dispensing of darolutamide or enzalutamide or apalutamide or abiraterone acetate/methylprednisolone, initiated for the first time during the patient identification period for mHSPC * Age ≥18 years at index date. * At least 12 months of data prior to index date (a sensitivity analysis will also be conducted using 6 months pre-index period) * At least 3 months of data after index date (a sensitivity analysis will also be conducted using 6 months post-index period)
Exclusion criteria
* Evidence of prior use of ARPI, including darolutamide, enzalutamide, apalutamide, or abiraterone/methylprednisolone, before the index date * Evidence of castration resistant prostate cancer (CRPC), either metastatic or nonmetastatic, before or on the index date, proxied by timing of medications in use.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Number and proportion of patients taking each ARPI as a percentage of total study population. | Retrospective analysis from December 2022 to June 2025 |
| Demographic characteristics of mHSPC patients | Retrospective analysis from December 2022 to June 2025 |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Proportion of days covered (PDC) to understand adherence | Retrospective analysis from December 2022 to June 2025 | Evaluation of treatment adherence from treatment initiation using a proportion of days covered (PDC) analysis. PDC is calculated as the number of days with medication available divided by the total number of days in the observations period, starting from ARPI (Andorgen receptor pathway inhibitor) initiation |
| Starting dose and change in dose over time | Retrospective analysis from December 2022 to June 2025 | — |
Countries
Australia
Contacts
CONTACTBayer Clinical Trials Contact
Outcome results
None listed