Congenital heart diseases (CHDs) are common in infants with cholestasis due to shared prenatal and metabolic factors. This study aims to determine the frequency and types of CHDs and to assess physical and mental development in children below two years with cholestasis at Assiut University Children's Hospital.

Congenital heart diseases (CHDs) are the most common structural malformations in childhood, affecting approximately 8-12 per 1,000 live births worldwide. Infants with systemic disorders such as neonatal and infantile cholestasis have a higher prevalence of CHDs due to overlapping prenatal insults, genetic syndromes, and metabolic disturbances. Cholestasis, defined as impaired bile flow with conjugated hyperbilirubinemia, may arise from biliary atresia, neonatal hepatitis, or metabolic and syndromic disorders such as Alagille syndrome. Several studies highlight a strong association between cholestasis and CHDs, and early recognition of this dual burden is essential to improve outcomes.

Inclusion Criteria:

• Children below 2 years presenting with cholestasis

Exclusion Criteria:

• Prematurely born infants.

Infants with various causes of cholestatic disorders evaluated for congenital heart diseases and developmental outcomes.

Individual participant data will not be shared because the dataset contains sensitive clinical information about pediatric patients, and sharing is not permitted by the institutional ethics committee.