What are Long-Chain Fatty Acid Oxidation Disorders?

LC-FAOD are a group of autosomal recessive genetic disorders characterized by metabolic deficiencies in which the body is unable to convert long-chain fatty acids into energy. The inability to produce energy from fat can lead to severe depletion of glucose in the body and serious complications, which can lead to hospitalizations or early death. LC-FAOD are included in newborn screening panels across the U.S. and in certain European countries due to the risk for serious outcomes including death early in life.

LC-FAOD affect an estimated 2,000 to 3,500 children and adults in the United States.


Learn more about DojolviTM  (triheptanoin)


FAOD Support Organizations:


INFORM Families

Save Babies

The Metabolic Foundation


*These organizations are an incomplete listing of rare disease support organizations and are not controlled by, endorsed by, or affiliated with Ultragenyx Pharmaceutical Inc. The list is meant for informational purposes only and is not intended to replace your healthcare professional’s medical advice. Ask your doctor or nurse any questions you may have about your disease or treatment plan. If you would like to have your group added to the list, please contact

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