Statistics
The sample size was calculated using the one-sample log-rank test based on the primary endpoint of PFS. According to Al-Batran’s study [Patients who received at least two doses of PLD and completed at least one efficacy evaluation were included in the efficacy analysis. Safety was analyzed by descriptive statistics in all patients who received at least one dose of PLD and underwent at least one safety evaluation. PFS and OS analyses were estimated using the Kaplan–Meier method, and 95% confidence intervals (CIs) were also calculated. ORR, DCR, and CBR were summarized with their 95% CIs. Descriptive quantitative data were expressed as median and range according to the data distribution, and qualitative data were expressed as counts and percentages. Two-sided 