Phenome-Wide Association Studies on a Quantitative Trait: Application to TPMT Enzyme Activity and Thiopurine Therapy in Pharmacogenomics
Figure 2
Schematic representation of a PheWAS on a quantitative trait, analyzing ICD codes and biological test results.
PheWAS: Phenome-wide association study; ICD: International classification of diseases; TPMT: thiopurine S-methyltransferase. Patients are assigned to a group depending on the level of a quantitative trait (e.g. TPMT activity). ICD codes and biological test results are screened to find systematic differences between the groups.