Trial reportBJU international2026
Long-term outcomes of cribriform-positive and cribriform-negative prostate cancer treated with radical prostatectomy in the ProtecT trial.
Trial report in BJU international, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02044172 (The ProtecT Trial - Evaluating the Effectiveness of Treatments for Clinically Localised Prostate Cancer), which is not on this map. Cited by 2 papers.
What it found
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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.
The ProtecT Trial - Evaluating the Effectiveness of Treatments for Clinically Localised Prostate Cancer
Who cites it
2 citing papers in PubMed.
- Unsampled large cribriform and intraductal carcinoma and the limits of risk stratification by prostate biopsy.BJU international · 2026Article
- Germline polygenic score for prostate cancer aggressiveness.medRxiv : the preprint server for health sciences · 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
16 authors.
Funding
Abstract
objectivesTo retrospectively analyse the results of the Prostate Testing for Cancer and Treatment (ProtecT; ClinicalTrials.gov identifier: NCT02044172) trial to establish the association between cribriform-positive and -negative prostate cancer (PCa) and the 15-year risk of metastasis or death from PCa in patients who underwent radical prostatectomy (RP). PATIENTS AND
methodsBetween 1999 and 2009, the ProtecT phase 3 clinical trial enrolled 1643 men with clinically localised PCa who were randomised to receive active monitoring, RP, or radiotherapy. In this secondary analysis of the trial, a centralised histopathological review was conducted on available RP pathology slides to classify patients as cribriform-positive if they had invasive cribriform carcinoma and/or intraductal carcinoma. The primary outcome was a composite of progression to metastatic disease or death from PCa. Exposures included age, prostate-specific antigen density, RP Grade Group (GG), pathological T stage (pT), and cribriform status. Multivariable Cox proportional hazards regression models assessed 15-year risk. Cumulative incidence curves were compared using the Gray test.
resultsOf 480 men with RP specimens reviewed, 143 (30%) had cribriform-positive disease and 337 (70%) had cribriform-negative disease. All 21 metastatic or lethal events occurred exclusively in the cribriform-positive group (15-year cumulative incidence 14%). Within the cribriform-positive cohort, risk was concentrated in patients with pT3b stage and/or GG ≥3 (15-year cumulative incidence 27%). In multivariable analysis of cribriform-positive patients, pT3b stage (hazard ratio [HR] 8.19, 95% confidence interval [CI] 2.39-28.10; P < 0.001) and GG 3 disease (HR 5.12, 95% CI 1.59-16.40; P = 0.006) were independent predictors of adverse outcomes. Conversely, cribriform-positive patients with GG 2 and ≤pT3a had a 15-year event rate of only 3%.
conclusionIn the ProtecT trial, the 15-year risk of metastasis or death after RP was a binary outcome defined by cribriform status. The concentration of risk in men with cribriform-positive, high-grade and/or pT3b tumours identifies a target population for adjuvant therapy trials, while supporting management de-escalation for most RP patients.
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