ArticleCancer epidemiology2025
Treatment switching between Enzalutamide and Abiraterone Acetate and time to oral opioid initiation in castration-resistant prostate cancer patients.
Article in Cancer epidemiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Real-world treatment durability and pain management in older adults with metastatic castration-resistant prostate cancer.Journal of geriatric oncology · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
13 authors.
Funding
Abstract
BACKGROUND AND
aimsEnzalutamide (ENZ) and Abiraterone Acetate (AA) are both first-line treatments for castration-resistant prostate cancer (CRPC). CRPC patients may switch from ENZ to AA or from AA to ENZ, if they do not respond well to the treatment, or experience intolerable side effects. This study examine treatment switching from ENZ to AA or from AA to ENZ, while investigating death as a competing risk. Whether ENZ compared to AA was associated with a longer time to starting oral opioids was also investigated.
methodsAn active comparator new-user design was used to identify 1406 men diagnosed with CRPC who received ENZ and AA using the Surveillance, Epidemiology, and End Results-Medicare Linked Database from 2012 to 2016. Inverse probability treatment weights (IPTW)-adjusted Fine-Gray competing risk models were used to compare the switching drugs and time-to-first use of oral opioids after initiating ENZ and AA.
resultsMost patients (61 %) received AA, while 39 % received ENZ. Overall, ENZ demonstrated a significant reduction in the Sub-distribution Hazard Ratio (SHR) for switching treatment (IPTW-adjusted SHR 0.63; 95 % CI, 0.54-0.73; P < 0.001), indicating a decrease in treatment switching compared to AA. Cumulative incidence curves revealed substantial differences in switching patterns over time (Gray's test, p < 0.001). For time-to-first oral opioid use, the IPTW-adjusted SHR when comparing ENZ to AA was 0.95 (95 % CI, 0.83-1.09; P = 0.48), showing no significant difference between the two groups.
conclusionPatients who began their treatment with ENZ exhibited a substantially lower hazard of switching to AA when compared to those who started with AA.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.