In our UCB cohorts, the mean LI value of Ki-67 for all 213 UCB tumor samples was 31.2%, thus, the mean value of 31.2% was used as a cutoff value to define low Ki-67 LI (LI<31.2%) and high Ki-67 LI (LI≧31.2%). This evidence concerns the gene MKI67 and neoplasm.