“Alagille syndrome can often be difficult to diagnose because it has signs and symptoms similar to those of other liver diseases, such as biliary atresia. There are several ways to diagnose Alagille syndrome, such as liver function tests, heart evaluations, eye exams, ultrasounds, and genetic testing.  Alagille syndrome can develop by chance with no history of the disease in the family. However, in up to 50% of cases, the disease is passed down from a parent.”

AlagilleSyndrome.com  (https://alagillesyndrome.com/?gclid=EAIaIQobChMIh5vN_q3j_AIVF_rICh0a1A5VEAAYASAAEgID4fD_BwE&gclsrc=aw.ds)