SynthesisClinical genitourinary cancer2014
Six-month progression-free survival as the primary endpoint to evaluate the activity of new agents as second-line therapy for advanced urothelial carcinoma.
Synthesis in Clinical genitourinary cancer, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.
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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.
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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.
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Who cites it
10 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.
- A systematic review of meta-analyses assessing the validity of tumour response endpoints as surrogates for progression-free or overall survival in cancer.British journal of cancer · 2020Pooled it
- Phase II trial of afatinib in patients with advanced urothelial carcinoma with genetic alterations in ERBB1-3 (LUX-Bladder 1).British journal of cancer · 2024Trial
- Atezolizumab in patients with locally advanced and metastatic urothelial carcinoma who have progressed following treatment with platinum-based chemotherapy: a single-arm, multicentre, phase 2 trial.Lancet (London, England) · 2016Trial
- Multimodal integration of blood RNA and ctDNA reflects response to immunotherapy in metastatic urothelial cancer.JCI insight · 2025Article
- Avelumab, an Anti-Programmed Death-Ligand 1 Antibody, In Patients With Refractory Metastatic Urothelial Carcinoma: Results From a Multicenter, Phase Ib Study.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2017Article
- Upper tract urothelial carcinoma topical issue 2016: treatment of metastatic cancer.World journal of urology · 2017Review
- Bladder cancer: Angiogenesis as a therapeutic target in urothelial carcinoma.Nature reviews. Urology · 2016Review
- New discoveries in the molecular landscape of bladder cancer.F1000Research · 2016Review
- Androgen receptor targeting drugs in castration-resistant prostate cancer and mechanisms of resistance.Clinical pharmacology and therapeutics · 2015Review
- Salvage systemic therapy for advanced urothelial carcinoma: on the cusp of a sea change?The oncologist · 2015Article
Corrections and comments
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Authors and funding
22 authors at 17 institutions in 5 countries.
Funding
Abstract
objectiveSecond-line systemic therapy for advanced urothelial carcinoma (UC) has substantial unmet needs, and current agents show dismal activity. Second-line trials of metastatic UC have used response rate (RR) and median progression-free survival (PFS) as primary endpoints, which may not reflect durable benefits. A more robust endpoint to identify signals of durable benefits when investigating new agents in second-line trials may expedite drug development. PFS at 6 months (PFS6) is a candidate endpoint, which may correlate with overall survival (OS) at 12 months (OS12) and may be applicable across cytostatic and cytotoxic agents.
methodsTen second-line phase II trials with individual patient outcomes data evaluating chemotherapy or biologics were combined for discovery, followed by external validation in a phase III trial. The relationship between PFS6/RR and OS12 was assessed at the trial level using Pearson correlation and weighted linear regression, and at the individual level using Pearson chi-square test with Yates continuity correction.
resultsIn the discovery dataset, a significant correlation was observed between PFS6 and OS12 at the trial (R(2) = 0.55, Pearson correlation = 0.66) and individual levels (82%, Қ = 0.45). Response correlated with OS12 at the individual level less robustly (78%, Қ = 0.36), and the trial level association was not statistically significant (R(2) = 0.16, Pearson correlation = 0.37). The correlation of PFS6 (81%, Қ = 0.44) appeared stronger than the correlation of response (76%, Қ = 0.17) with OS12 in the external validation dataset.
conclusionsPFS6 is strongly associated with OS12 and appears more optimal than RR to identify active second-line agents for advanced UC.
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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.