Plasschaert et al. performed ABCB1 rs1045642 and rs2032582 (g.87531302A > T/C) variants genotyping in 52 Dutch childhood ALL patients, and the results showed no association between these two genotypes and the pharmacokinetics of VCR (Plasschaert et al., 2004). This evidence concerns the gene ABCB1 and acute lymphoblastic leukemia.