Based on TPMT status, start with normal starting dose (e.g., 2-3 mg/kg/day) and adjust doses of azathioprine based on disease-specific guidelines. Allow 2 weeks to reach steady-state after each dose adjustment (PMID 20354201, 11302950, 15606506). NUDT15 status could not be determined based on genotyping. If thiopurines are required and NUDT15 status is unknown, monitor closely for toxicity.