Liver failure Among Young Saudi Infants: Etiology, Clinical Presentation, and Outcome.

OBJECTIVES: The published data on early infantile liver failure (EILF) are scarce and limited to Caucasians. We conducted this study to describe the etiology and outcome of EILF among Arabs and identify prognostic factors.

METHODS: We retrospectively reviewed our database of 524 infants presenting with liver impairment from 2008 to 2018, and identified cases of EILF defined as presence of biochemical pattern of liver disease and INR ≥ 2 (unresponsive to vitamin K) with onset before 3 months of life. Primary outcomes included death or liver transplantation (LT) [poor outcome group] and survival with native liver [good outcome group].

RESULTS: 42 cases of EILF (22 females) were identified (8%). The etiology was indeterminate in 14 (33.3%) and established in 27 (64.3%): galactosemia (7 cases, 16.6%), tyrosinemia (5, 12%), neonatal hemochromatosis (NH) and hemophagocytic lymphohistiocytosis (HLH) [[4 each, 9.5%], mitochondrial hepatopathy (3, 7%), and miscellaneous (5, 12%). LF resolved in 15 cases (35.7%), either spontaneously or in response to specific therapy, 23 (54.7%) died, and 4 underwent LT (9.5%). ROC analysis for the best cut-off value of serum total bilirubin for prediction of study outcomes was 120 μmol/l (sensitivity 81.5%, specificity 80%). Among the diagnostic groups, galactosemia and tyrosinemia predicted good outcome, while the idiopathic diagnosis predicted poor outcome (OR =13).

CONCLUSION: Similar to Western countries, galactosemia, tyrosinemia, NH, HLH, and mitochondrial hepatopathy are the main players in EILF in Saudi Arabia. Galactosemia and tyrosinemia predict good prognosis and idiopathic diagnosis predicts poor prognosis.