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Real-world Outcomes in Advanced Urothelial Cancer and the Role of Neutrophil to Lymphocyte Ratio.

INTRODUCTION: In the first- and second-line metastatic urothelial carcinoma (mUC) treatment setting, we investigated real-world outcomes and evaluated the prognostic role of neutrophil to lymphocyte ratio (NLR).

METHODS: A retrospective analysis was performed on patients with mUC treated with systemic therapy. Overall response rates (ORRs), median time to treatment failure (mTTF), and median overall survival (mOS) were calculated. The association between baseline NLR (using a literature-derived cut-off of 3, as well as the best cut-off NLR value of 5.45 as identified by X-Tile software from this dataset) and mTTF and mOS were evaluated using Cox regression analysis.

RESULTS: We evaluated 233 patients. In the first-line, the ORR was 25%. mTTF and mOS were 6.9 months and 9.0 months, respectively. Low baseline NLR was significantly associated with improved 8.3-month mTTF, in contrast to 5.8 months for patients with high NLR (P = .046). Low NLR was significantly correlated with a longer mOS of 13.1 months, compared with high NLR (8.2 months; P = .007). In the second-line, an ORR of 22%, an mTTF of 4.1 months, and an mOS of 8 months were observed. Low NLR in the second-line was significantly associated with improved mTTF at 7.9 months versus high NLR patients (3.3 months; P = .023). Second-line low NLR was significantly associated with a longer mOS of 12.2 months, in comparison to 6.8 months with high NLR (P = .003).

CONCLUSION: In this real-world analysis of patients with mUC, first-line outcomes were lower than expected. Low NLR in the first- and second-line is associated with improved mTTF and mOS.

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