总结
Genotype (CCGCGCCACTTGGCCTGCCTCCGTCCCG)2/(CCGCGCCACTTGGCCTGCCTCCGTCCCG)2 is not associated with concentrations of methotrexate in children with Precursor Cell Lymphoblastic Leukemia-Lymphoma as compared to genotypes (CCGCGCCACTTGGCCTGCCTCCGTCCCG)2/(CCGCGCCACTTGGCCTGCCTCCGTCCCG)3 + (CCGCGCCACTTGGCCTGCCTCCGTCCCG)3/(CCGCGCCACTTGGCCTGCCTCCGTCCCG)3.