Health Outcomes and Resource Consumption Analysis of Radioembolization with Y90 Glass Microspheres (TARE-Y90) Versus Transarterial Chemoembolization with Irinotecan (DEBIRI) in Patients with Liver Metastases from Colorectal Cancer in Spain

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Background: The present study aims to investigate the superiority of TARE-Y90 in the treatment of liver metastases from colorectal cancer in comparison to DEBIRI and perform a parallel resource consumption study to demonstrate a possible favorable cost-effectiveness balance. Methods: The number of subjects included in this study was 46 for TARE-Y90 and 56 in the DEBIRI group. The variables of interest in this study were collected for all selected subjects. Time-to-endpoint outcomes (overall survival, time to progression and time to extra-hepatic progression) were calculated by Kaplan–Meier analysis, reported as medians with 95% confidence intervals and compared between groups by log-rank testing. Values for median time-to-event and 95% confidence intervals were calculated using bootstrapping. Results: Categorization into overall response (OR) and no overall response (NOR) revealed a higher percentage of overall responses in the DEBIRI group (52%) compared to TARE-Y90 (24%). The numerical differences observed in certain response categories did not reach statistical significance, indicating a comparable overall response to treatment between the two cohorts based on the m-RECIST criteria. Median overall survival for the TARE-Y90 cohort was 11.3 (95% CI 10.9–18.6) months and 15.8 (95% CI 14.8–22.7) months for the DEBIRI cohort. Log-rank testing showed no statistically significant differences (p = 0.53). Median time to hepatic disease progression for the TARE-Y90 cohort was 3.5 (95% CI 3.4–8.1) months and 3.8 (95% CI 3.7–11.1) months for the DEBIRI cohort. Log-rank testing showed no statistically significant differences (p = 0.82). An important result of the resource utilization analysis is that TARE-Y90 patients had 1.33 treatments on average per patient, while DEBIRI patients had 3.16 treatments per patient. TARE-Y90 patients also needed fewer days of hospitalization than those in the DEBIRI group. The consequence is that the overall use of resources was higher for DEBIRI in comparison to TARE-Y90. Conclusions: Our analysis of the TARE-Y90 and DEBIRI treatments for CRC liver metastases contributes valuable insights into their comparative effectiveness, revealing no significant differences in radiological responses and overall survival. TARE-Y90 showed higher resource utilization, and its potential advantages in patient comfort and average resource consumption per patient warrant consideration.

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