TY - JOUR T1 - PP-47 Off-label use of tacrolimus in children with henoch-schonlein purpura nephritis: efficacy and safety JF - Archives of Disease in Childhood JO - Arch Dis Child SP - A42 LP - A43 DO - 10.1136/archdischild-2017-esdppp.93 VL - 102 IS - 10 AU - Zhao AU - Zhang AU - Hao AU - Li AU - Dong AU - Dong AU - Jacqz-Aigrain AU - Shi Y1 - 2017/10/01 UR - http://adc.bmj.com/content/102/10/A42.3.abstract N2 - Background Tacrolimus was used off-label in the treat-ment of Henoch-Schönlein purpura nephritis (HSPN) in children. The objective of this pilot study was to assess its efficacy and safety.Methods Children with HSPN receiving tacrolimus and steroids as empirical treatment was included. Urine protein was assessed every 2 weeks during treatment. Pharmacogenetic analysis was performed on the CYP3A5 gene.Results A total of 25 patients with a mean age of 7.2 (range 3–12) years was included in this study. Pro-teinuria returned to negative in 21 patients with a mean treatment duration of 101 (SD 75) days. Patients with CYP3A5*1/*3 had longer duration of treatment achiev-ing negative proteinuria as compared with patients with CYP3A5*3/*3 (131±97 versus 80±39 days). No patients discontinued the tacrolimus treatment due to adverse events, and no drug-related adverse events were shown to have a causal association with tacrolimus therapy.Conclusion This preliminary study shows that tacrolim-us might be an effective, and well-tolerated drug for the treatment of HSPN in children. ER -