Abstract
Purpose
Immune checkpoint inhibitors (ICIs) have been incorporated in the treatment of metastatic urothelial carcinoma (mUC) upon platinum-based chemotherapy according to the positive results of large clinical trials. Nevertheless, results from unselected populations reflecting real-world data (RWD) are highly informative to the clinician. We reviewed daily clinical practice outcomes in patients with mUC who received atezolizumab in our institution.
Methods
Here we evaluated the clinical activity and safety of atezolizumab in an unselected population of mUC patients who received atezolizumab between 2018 and 2022 reflecting RWD. Efficacy and safety information were retrospectively collected.
Results
A total of 63 patients were included. The mean age was 68 years and the objective response rate was 14.3%. The median progression-free survival was 3 months and the median overall survival 6 months. At 1 year, 42% of the patients were alive. ECOG (0 vs 1) and neutrophil–lymphocytes ratio < 2 at the start of ICI were positive prognostic factors that discriminated between long vs short survivors. Overall tolerance was good with no new safety signals. Five patients (17%) had treatment-related adverse events grade ≥ 2 that required corticosteroids.
Conclusion
In this retrospective study, atezolizumab was an effective and tolerable treatment option for patients with mUC after progression to platinum-based chemotherapy. Yet, patient selection remains critical to improve outcomes.
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Data availability
The data that support the findings of this study are available on request from the corresponding author, [ID].
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by MS, NMU, and AM. The first draft of the manuscript was written by MS, ID, and NMU and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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The study protocol was approved by the Clinical Research Ethics Committee of Cantabria.
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Sotelo, M., Muñoz-Unceta, N., Matorras, A. et al. Outcomes with atezolizumab in metastatic urothelial cancer: real-world data from a single institution. Clin Transl Oncol 26, 682–688 (2024). https://doi.org/10.1007/s12094-023-03288-1
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DOI: https://doi.org/10.1007/s12094-023-03288-1