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Affected individuals have a reduced number of bile ducts in the liver.
As a result, there is a decrease in bile flow, also known as cholestasis.
Some patients may also have an enlarged spleen or liver.
Deficiencies in specific vitamins may result in vision problems from a lack of Vitamin A, bone weakness from a lack of vitamin D, developmental delays from a lack of Vitamin E, and blood clotting problems from a lack of Vitamin K.
The heart can also be impacted by Alagille syndrome.
The most common finding in ALGS patients is peripheral pulmonary arterial stenosis.
This means that the blood vessels carrying blood to the lungs are narrowed.
The stenosis typically manifests as a heart murmur, or an extra sound in the heartbeat.
Symptoms are based on the degree of narrowing of the blood vessel and some people may have no symptoms while others may have dizziness, shortness of breath, increased sweating, chest pains, and cyanosis, or bluish colored skin.
Alagille syndrome (NORD) is a rare, autosomal dominant disorder that affects the liver, heart, and other parts of the body. The most common symptom of Alagille syndrome is jaundice (yellowing of the skin and eyes) in infancy. Other symptoms may include malformed bones, kidney problems, and irregular developmental milestones. There is no cure for Alagille syndrome, but many affected individuals can lead normal, productive lives with proper care.
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