The Human Phenotype Ontology (HPO) provides the following list of features that have been reported in people with this condition. Much of the information in the HPO comes from Orphanet, a European rare disease database. If available, the list includes a rough estimate of how common a feature is (its frequency). Frequencies are based on a specific study and may not be representative of all studies. You can use the MedlinePlus Medical Dictionary for definitions of the terms below.
| Signs and Symptoms | Approximate number of patients (when available) |
| Abnormality of acetylcarnitine metabolism | Very frequent (present in 80%-99% of cases) |
| Abnormality of long-chain fatty-acid metabolism | Very frequent (present in 80%-99% of cases) |
| Very frequent (present in 80%-99% of cases) |
|
| Elevated hepatic transaminases | Very frequent (present in 80%-99% of cases) |
| Hepatomegaly | Very frequent (present in 80%-99% of cases) |
| Myalgia | Very frequent (present in 80%-99% of cases) |
| Myopathy | Very frequent (present in 80%-99% of cases) |
| Very frequent (present in 80%-99% of cases) |
|
| Cerebral calcification | Frequent (present in 30%-79% of cases) |
| Multicystic kidney dysplasia | Frequent (present in 30%-79% of cases) |
| Renal insufficiency | Frequent (present in 30%-79% of cases) |
| Coma | Occasional (present in 5%-29% of cases) |
| Encephalitis | Occasional (present in 5%-29% of cases) |
| Occasional (present in 5%-29% of cases) |
|
| Sudden cardiac death | Occasional (present in 5%-29% of cases) |
Making a diagnosis for a genetic or rare disease can often be challenging. Healthcare professionals typically look at a person’s medical history, symptoms, physical exam, and laboratory test results in order to make a diagnosis. The following resources provide information relating to diagnosis and testing for this condition. If you have questions about getting a diagnosis, you should contact a healthcare professional.
The resources below provide information about treatment options for this condition. If you have questions about which treatment is right for you, talk to your healthcare professional.
Research helps us better understand diseases and can lead to advances in diagnosis and treatment. This section provides resources to help you learn about medical research and ways to get involved.
Support and advocacy groups can help you connect with other patients and families, and they can provide valuable services. Many develop patient-centered information and are the driving force behind research for better treatments and possible cures. They can direct you to research, resources, and services. Many organizations also have experts who serve as medical advisors or provide lists of doctors/clinics. Visit the group’s website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD.
Living with a genetic or rare disease can impact the daily lives of patients and families. These resources can help families navigate various aspects of living with a rare disease.
These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.
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