{"Azathioprine can be affected by a patient's TPMT and NUDT15 phenotype. This patient is predicted to be a NUDT15 normal metabolizer. Based on that specific result, the patient may receive a standard starting dose of azathioprine. However, TPMT phenotype could not be assigned based on genotyping performed. Consider evaluating TPMT erythrocyte activity to assess TPMT phenotype. Erythrocyte TPMT activity test results can be unreliable in the case of recent red blood cell transfusions. If azathioprine is required and TPMT status is unknown, monitor closely for toxicity. Please consult a clinical pharmacist for more information."}