RUNX1T1 and leukemia: If regular monitoring of ETO fusion gene ration was still negative at the time of the last follow-up but all around 10–6 levels rise (range does not exceed a logarithmic), the possibility of a hematology recrudescent is low, but after transplantation the monitoring ETO fusion quantitative gradually increases, in most cases, it will appear in a different time of leukemia relapse comprehensive [24–25].