Population-based study of incidence and clinical outcome of neonatal cholestasis in patients with Down syndrome.
OBJECTIVE
To study the incidence and outcome of Down syndrome-associated neonatal cholestasis in a population-based cohort.


METHODS
This retrospective study included all neonates diagnosed with Down syndrome born between January 2005 and September 2011 in the County of Stockholm, Sweden. Clinical and biochemical data related to cholestasis, early gastrointestinal (GI) involvement, congenital heart defects (CHD), and bone marrow disease were obtained from the computer-based hospital chart system.


RESULTS
A total of 206 newborns with Down syndrome were identified, for an incidence of 1 in 880 newborns. Prevalences of other diseases in these newborns included 47% for CHD, 11.2% for GI involvement, 3.9% for neonatal cholestasis, and 3.4% for bone marrow disease. Neonatal cholestasis was more common in the newborns with GI involvement (3 of 23 vs 5 of 183 of those without GI involvement; P = .047), CHD (8 of 96 vs 0 of 110 of those without CHD; P = .0019), and bone marrow disease (3 of 7 vs 5 of 199 of those without bone marrow disease; P = .0013). Cholestasis was severe in 3 patients (all of whom had bone marrow disease, with liver failure and early death in 2), and transient in 5 patients.


CONCLUSIONS
Neonatal cholestasis occurs in a significant percentage of patients with Down syndrome and is always associated with involvement of other organs. The outcome is variable, being most severe in newborns with the combination of neonatal cholestasis and bone marrow disease.
Department of Pediatric Gastroenterology, Hepatology and Nutrition, Karolinska University Hospital and Division of Pediatrics, CLINTEC, Karolinska Institutet, Stockholm, Sweden. henrik.arnell@karolinska.se
Henrik
H
Arnell
Björn
B
Fischler
D001855:Bone Marrow Diseases / Q000175:diagnosis; D002779:Cholestasis / Q000150:complications* / Q000175:diagnosis / Q000453:epidemiology*; D015331:Cohort Studies; D004314:Down Syndrome / Q000150:complications* / Q000175:diagnosis; D005260:Female; D005767:Gastrointestinal Diseases / Q000175:diagnosis; D006330:Heart Defects, Congenital / Q000175:diagnosis; D006801:Humans; D015994:Incidence; D007231:Infant, Newborn; D008297:Male; D010372:Pediatrics / Q000379:methods; D012189:Retrospective Studies; D013548:Sweden