{"TPMT": "TPMT NMs have lower erythrocyte concentrations of TGN metabolites and higher concentrations of MeMPNs compared to TPMT IMs and TPMT PMs. This is the 'normal' pattern. TPMT IMs have moderate to high erythrocyte concentrations of TGN metabolites and low concentrations of MeMPNs compared to TPMT NMs.", "NUDT15": "Increased risk of thiopurine-related leukopenia, neutropenia and myelosuppression."}