Analysis of Immunogenetic Factors in Idiosyncratic Drug-Induced Liver Injury in the Paediatric Population.

Objective: Idiosyncratic drug-induced liver injury (DILI) is a multifactorial complex disease, in which the toxic potential of the drug, together with genetic and acquired factors and deficiencies in adaptive processes which limit the extent of damage, can determine susceptibility and make individuals unique in their development of hepatotoxicity. The aim of this study is to analyse the genetic factors (HLA, cytokine polymorphisms and KIR genotype) of children who experience an episode of drug-induced liver injury. Subjects and method: Prospective multicentre case control study. The subjects included in the study were 30 paediatric patients - infants and children aged between 0 and 15 years and who presented possible liver disease associated with the intake of medicines, herbal products, drugs or toxins. As a control group, 62 subjects were selected. Results and Conclusions: Although HLAC0401 and HLADQB0603 may provide a hepatoprotective mechanism in the paediatric population, HLADQA0102 and HLA-DR*12 are more commonly found in sick children and their presence may be related to liver damage. The KIR inhibitor KIR3DL1 was not present in any child in the control group. Polymorphisms that are low producers of IL-10 occur more frequently in children who have experienced hepatotoxicity. (C) 2016 by European Society for Pediatric Gastroenterology, Hepatology, and Nutrition and North American Society for Pediatric Gastroenterology,

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