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)|
|Anterior rib cupping||-|
|Broad nasal tip||-|
|Coarse facial features||-|
|Cone-shaped capital femoral epiphysis||-|
|Delayed CNS myelination||-|
|Delayed skeletal maturation||-|
|Flared iliac wings||-|
|Hypoplasia of the corpus callosum||-|
|Hypoplasia of the odontoid process||-|
|Intellectual disability, progressive||-|
|Low anterior hairline||-|
|Metaphyseal cupping of metacarpals||-|
|Optic disc pallor||-|
|Peg-like central prominence of distal tibial metaphyses||-|
|Short femoral neck||-|
|Widened subarachnoid space||-|
|X-linked recessive inheritance||-|
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.
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.
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