A Prospective Database of Infants With Cholestasis

INCLUSION CRITERIA

* Infant's age less than or equal to 180 days at initial presentation at the ChiLDReN clinical site.
* Diagnosis of cholestasis defined by serum direct or conjugated bilirubin greater than or equal to 2 mg/dl and suspected biliary atresia.
* The subject's parent(s)/guardian(s) willing to provide informed written consent.

EXCLUSION CRITERIA

* Acute liver failure.
* Previous hepatobiliary surgery with dissection or excision of biliary tissue.
* Diagnoses of bacterial or fungal sepsis (except where associated with metabolic liver disease)
* Diagnoses of hypoxia, shock or ischemic hepatopathy within the past two weeks (If the cholestasis persists beyond two weeks of the initiating event, the infant can be enrolled).
* Diagnosis of any malignancy.
* Presence of any primary hemolytic disease (except when diagnosed with biliary atresia or another cholestatic disease being studied by ChiLDREN).
* Diagnosis of any drug or Total parenteral nutrition (TPN)-associated cholestasis (except when diagnosed with biliary atresia or another cholestatic disease being studied by ChiLDREN).
* Diagnosis with Extracorporeal membrane oxygenation (ECMO)-associated cholestasis.
* Birth weight less than 1500g (except when diagnosed with biliary atresia).