总结
Genotype (CCGCGCCACTTGGCCTGCCTCCGTCCCG)3/(CCGCGCCACTTGGCCTGCCTCCGTCCCG)3 is associated with increased steady-state concentration of methotrexate in children with Precursor Cell Lymphoblastic Leukemia-Lymphoma as compared to genotypes (CCGCGCCACTTGGCCTGCCTCCGTCCCG)2/(CCGCGCCACTTGGCCTGCCTCCGTCCCG)2 + (CCGCGCCACTTGGCCTGCCTCCGTCCCG)2/(CCGCGCCACTTGGCCTGCCTCCGTCCCG)3.