3. A study on the current Tacrolimus usage and therapeutic drug monitoring program in pediatric patients at the Vietnam National Children's Hospital

Nguyen Viet Anh, Nguyen Phuong Thao, Nguyen Thi Hong Ha, Pham Thu Ha, Nguyen Thi Tham, Tran Thi Thu Trang

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Abstract

This retrospective cohort study was conducted on 69 patients at the Vietnam National Children's Hospital from 2020 to 2022 to assess the current usage of tacrolimus (TAC) and the therapeutic drug monitoring program. 22 liver transplant patients , 18 kidney transplant recipients, 25 nephrotic syndrome patients (NS), and 4 systemic lupus erythematosus patients were included in this study. Results showed that the initial TAC dose was around 0.1 mg/kg/day in all groups. There were 27 patients (39.1%) who experienced TAC-related adverse events, of which 63.6% were liver transplant patients (14/27 cases). The highest therapeutic drug monitoring (TDM) frequency in the first two weeks was observed in liver transplant patients (4.2 times/week); however, this group had the lowest proportion of samples within the target range and the highest intra-patient variability, indicating significant fluctuation in TAC levels. The study recommends developing specific TDM guidelines for each indication and strengthening collaboration between clinicians and clinical pharmacists to optimize treatment in pediatric patients.

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