Patient‐reported outcomes and inflammatory biomarkers in patients with locally advanced/metastatic urothelial carcinoma treated with durvalumab in phase 1/2 dose‐escalation study 1108

Background Durvalumab has shown meaningful clinical activity in patients with metastatic urothelial carcinoma (mUC) in Study 1108 (NCT01693562). An important focus in treatment is health‐related quality of life (HRQOL). Here, patient‐reported outcomes (PROs) from Study 1108 and their relationship with inflammatory biomarkers are explored. Methods Disease‐related symptoms, functioning, and HRQOL were assessed with the Functional Assessment of Cancer Therapy–Bladder (FACT‐Bl) and the European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire Core 30 (QLQ‐C30). Relationships between PRO improvements and the best changes in the tumor size, albumin level, and neutrophil‐lymphocyte ratio (NLR) were assessed with Spearman correlation analysis. Results The mean FACT‐Bl total score improved from 107.5 (standard deviation [SD], 23.0) at the baseline to 115.4 (SD, 22.6) on day 113, with similar increases found for the Trial Outcome Index (TOI) and Bladder Cancer Subscale (BLCS) scores. The mean FACT‐Bl total scores improved over time, and the FACT‐Bl TOI scores significantly improved by day 113 (P