Journal Article DKFZ-2025-01452

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Final overall survival and safety analyses of the phase 3 PSMAfore trial of [177Lu]Lu-PSMA-617 versus change of androgen receptor pathway inhibitor in taxane-naive patients with metastatic castration-resistant prostate cancer.

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2025
Elsevier Amsterdam [u.a.]

Annals of oncology 36(11), 1319-1330 () [10.1016/j.annonc.2025.07.003]
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Abstract: In PSMAfore, [177Lu]Lu-PSMA-617 (177Lu-PSMA-617) prolonged radiographic progression-free survival (rPFS) in taxane-naive patients with metastatic castration-resistant prostate cancer (mCRPC), with a favourable safety profile, versus a change in androgen receptor pathway inhibitor (ARPI). We report the final overall survival (OS) analysis and updated safety data.PSMAfore (NCT04689828) was an open-label, international, phase 3 trial. Patients with prostate-specific membrane antigen (PSMA)-positive mCRPC who had experienced disease progression once on a previous ARPI and were candidates for ARPI change were randomized 1:1 to 177Lu-PSMA-617 or ARPI change to abiraterone or enzalutamide. Crossover from ARPI change to 177Lu-PSMA-617 was allowed after centrally confirmed radiographic progression. Endpoints included rPFS (primary), OS (key secondary), and safety (secondary).Patients were randomized to 177Lu-PSMA-617 or ARPI change (n = 234 each): 141/234 participants (60.3%) randomized to ARPI change crossed over (75.4% of those with centrally confirmed radiographic progression). The median OS was 24.48 months (95% CI 19.55-28.94) with 177Lu-PSMA-617 versus 23.13 (19.61-25.53) with ARPI change (hazard ratio [HR] 0.91 [95% CI 0.72-1.14]; p = 0.20) based on the intention-to-treat (ITT) principle; the crossover-adjusted OS HR by inverse probability of censoring weighting modelling was 0.59 (95% CI 0.38-0.91). For 177Lu-PSMA-617 versus ARPI change, exposure-adjusted incidences of grade ≥ 3 and serious treatment-emergent adverse events were 60.8 versus 85.1 and 32.5 versus 49.9 per 100 patient-treatment years, respectively. Dry mouth occurred in 135/227 participants (59.5%; 2/227 grade ≥ 3) and anaemia in 62/227 (27.3%; 14/227 grade ≥ 3) in the 177Lu-PSMA-617 arm.OS analyses did not show a statistically significant difference between the 177Lu-PSMA-617 and ARPI arms based on the ITT principle; results were likely confounded by the high rate of crossover. The safety profile of 177Lu-PSMA-617 was favourable with no new safety signals identified.

Keyword(s): (177)Lu-PSMA-617 ; Metastatic castration-resistant prostate cancer ; overall survival ; radioligand therapy ; safety ; taxane-naive

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Note: 2025 Nov;36(11):1319-1330

Contributing Institute(s):
  1. DKTK Koordinierungsstelle Essen/Düsseldorf (ED01)
Research Program(s):
  1. 899 - ohne Topic (POF4-899) (POF4-899)

Appears in the scientific report 2025
Database coverage:
Medline ; Clarivate Analytics Master Journal List ; Current Contents - Clinical Medicine ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 50 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection
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 Record created 2025-07-21, last modified 2025-11-03



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