Every Other Day or Once a Week: Long-term Oncological Outcomes in the Phase 2 PATRIOT Trial of Prostate Stereotactic Ablative Body Radiotherapy
Bibliographic record
Abstract
BACKGROUND AND OBJECTIVE: The PATRIOT multicentre phase 2 trial showed that prolongation of overall treatment time (OTT) for prostate stereotactic ablative body radiotherapy (SABR) was associated with better acute bowel and urinary quality of life. However, the impact on long-term cancer outcomes is unclear. METHODS: Men with favourable-risk localised prostate cancer in the PATRIOT trial were randomised to five-fraction prostate SABR every other day (EOD; n = 77) or once weekly (QW; n = 75).The cancer outcomes evaluated in this post hoc analyses were biochemical failure (BF), metastasis-free survival (MFS), prostate cancer-specific survival (PCSS), and overall survival (OS). KEY FINDINGS AND LIMITATIONS: Median follow-up was 91 mo. The 8-yr cumulative incidence rates for BF were 5.5% in the EOD arm versus 9.6% the QW arm (p = 0.2). The 8-yr probability rates were 100% versus 95.9% for MFS (p = 0.08), 100% versus 97.2% for PCSS (p = 0.2), and 96.0% versus 85.4% for OS (p = 0.3) for the EOD versus QW arms, respectively. The study is limited by the small sample size (powered to detect significant differences in acute bowel quality of life). CONCLUSIONS: This study suggests no significant differences in long-term cancer outcomes between EOD and QW schedules for five-fraction prostate SABR. This trial is registered on ClinicalTrials.gov as NCT01423474.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.002 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.003 |
| Insufficient payload (model declined to judge) | 0.004 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".