title: Preemptive pharmacogenetic testing: insufficient data equal unsatisfactory guidance.
authors.forename: Howard L
authors.initials: HL
authors.lastname: McLeod
authors.forename: Kim L
authors.initials: KL
authors.lastname: Isaacs
mesh_terms: D005820:Genetic Testing; D005838:Genotype; D006801:Humans; D007249:Inflammation / Q000188:drug therapy* / Q000201:enzymology*; D008780:Methyltransferases / Q000235:genetics* / Q000378:metabolism*; D011687:Purines / Q000627:therapeutic use*; D012680:Sensitivity and Specificity
chemical_list: D011687:Purines; D008780:Methyltransferases; C022745:thiopurine methyltransferase