
Statistical analyses:
Descriptive statistics were used to summarize patient characteristics and safety and efficacy of the treatment. OS and PFS were estimated using the Kaplan-Meier method. The median OS and PFS and their 95% CIs were analyzed. Log-rank tests were used to compare differences in survival rates. All tests were 2-sided with a significance level of 0.05. All data summaries and listings were produced using R version 4.0.5 (Vienna, Austria).