PROTEUS: A randomized, double-blind, placebo (PBO)-controlled, phase 3 trial of apalutamide (APA) plus androgen deprivation therapy (ADT) versus PBO plus ADT prior to radical prostatectomy (RP) in patients with localized high-risk or locally advanced prostate cancer (PC).
Bibliographic record
Abstract
TPS5100 Background: Patients (pts) with localized high-risk PC experience disease progression rates of approximately 50% after RP (Kane et al. J Urol. 2007). With the approval of next-generation androgen receptor inhibitors, neoadjuvant studies have shown that 6 months of androgen blockade may improve local disease control at the time of RP (McKay et al. Prostate Cancer Prostatic Dis. 2017; Taplin et al. JCO. 2014). The purpose of this study is to determine if treatment with APA plus ADT before and after RP in pts with localized high-risk or locally advanced PC results in an improvement in pathologic complete response (pCR) rate and metastasis-free survival (MFS) compared with PBO plus ADT. Methods: This international multicenter trial is enrolling pts with localized high-risk or locally advanced PC who are candidates for RP. Eligibility criteria: Any Gleason score (GS) ≥ 4 + 3 with ≥ 6 positive systematic biopsies (SB); any GS ≥ 4 + 3 with ≥ 3 SB and prostate-specific antigen (PSA) ≥ 20 ng/mL; GS ≥ 9 in ≥ 1 SB or targeted biopsies (TB); or ≥ 2 SB or TB with continuous GS ≥ 8, each with ≥ 80% involvement. Stratification: GS (7 or ≥ 8), cN0 or N1, and region (North America, Europe, or rest of world). Randomization: 1:1 to APA (240 mg) plus ADT (LHRHa) or PBO plus ADT. Pts will receive 6 treatment cycles, followed by RP, followed by an additional 6 cycles. Dual primary end points: pCR rate (to be assessed by blinded independent central pathology review) and MFS (to be assessed by blinded independent central radiology review [BICR]). Secondary end points: PSA-free survival and progression-free survival. Imaging with CT or MRI and bone scan will be conducted at baseline and then every 6 months following biochemical failure until documented distant metastasis by BICR, or death. Approximately 1500 pts will be enrolled globally over 3.0 years in 240 sites in 19 countries. An independent data monitoring committee is commissioned to review trial data. Clinical trial information: NCT03767244.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.003 | 0.002 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.004 |
| Insufficient payload (model declined to judge) | 0.009 | 0.002 |
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".