Baseline characteristics of the phase II cohort.

(+): present, (−): absent, DFS: disease free survival, MSI-H: microsatellite instability-high, MSI-L: microsatellite instability-low, MSS: microsatellite stable, OS: overall survival.Baseline characteristics of the phase II cohort.(+)：存在，(−)：缺失；无病生存期（disease free survival，DFS）、微卫星高度不稳定（microsatellite instability-high，MSI-H）、微卫星低度不稳定（microsatellite instability-low，MSI-L）、微卫星稳定（microsatellite stable，MSS）及总生存期（overall survival，OS）。II期队列的基线特征。