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Genetic and Rare Diseases Information Center (GARD)

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LCHAD deficiency

Other Names for this Disease
  • 3-hydroxyacyl-CoA dehydrogenase long chain deficiency
  • Long-chain 3-hydroxy acyl CoA dehydrogenase deficiency
  • Long-chain 3-hydroxyacyl-coenzyme A dehydrogenase deficiency
  • Long-chain 3-OH acyl-CoA dehydrogenase deficiency
  • Trifunctional protein deficiency type 1
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LCHAD deficiency, or long-chain 3-hydroxyacyl-CoA dehydrogenase deficiency, is a rare inherited condition that prevents the body from converting certain fats to energy, particularly during periods without food (fasting). Signs and symptoms typically appear during infancy or early childhood and can include feeding difficulties, lack of energy, low blood sugar (hypoglycemia), weak muscle tone (hypotonia), liver problems, and abnormalities in the retina. Later in childhood, people with this condition may experience muscle pain, breakdown of muscle tissue, and peripheral neuropathy. Individuals with LCHAD deficiency are also at risk for serious heart problems, breathing difficulties, coma, and sudden death. This condition is inherited in an autosomal recessive pattern and is caused by mutations in the HADHA gene.[1]
Last updated: 11/14/2011


  1. LCHAD deficiency. Genetics Home Reference. July 2009; Accessed 11/14/2011.
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Please contact us with your questions about LCHAD deficiency. We will answer your question and update these pages with new resources and information.

Basic Information

  • Genetics Home Reference (GHR) contains information on LCHAD deficiency. This website is maintained by the National Library of Medicine.
  • The Screening, Technology And Research in Genetics (STAR-G) Project has a fact sheet on this condition, which was written specifically for families that have received a diagnosis as a result of newborn screening. This fact sheet provides general information about the condition and answers questions that are of particular concern to parents.

In Depth Information

  • Medscape Reference provides information on this topic. Click on the link to view this information. You may need to register to view the medical textbook, but registration is free.
  • The Online Mendelian Inheritance in Man (OMIM) is an catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs.  Access to this database is free of charge.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss LCHAD deficiency. Click on the link to view a sample search on this topic.

Selected Full-Text Journal Articles