总结
NUDT15 *1/*1 (assigned as high activity phenotype) is associated with increased dose of mercaptopurine in children with Precursor Cell Lymphoblastic Leukemia-Lymphoma as compared to NUDT15 *1/*2 + *1/*3 + *1/*4 + *1/*5 + *3/*3 + *3/*5 + *2/*3 (assigned as intermediate and low activity phenotype) .