MKI67 and neoplasm: In our UCB cohorts, since the median LI value of Ki-67 for all 184 UCB tumor samples was 28.2%, the median value of 28.2% was used as a cutoff value to define low LI of Ki-67 (LI < 28.2%) and high LI of Ki-67 (LI ≥ 28.2%).