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Developmental delay with or without dysmorphic facies and autism

Summary

Developmental delay with or without dysmorphic facies and autism (DEDDFA) is a complex neurodevelopmental disorder apparent from infancy or early childhood and associated with variably impaired intellectual development. Some patients may be severely affected with no speech and inability to walk, whereas others may be able to attend special schools or have normal intellectual function associated with autism spectrum disorder and mild speech delay. Genetic analysis has suggested that the phenotype can be broadly categorized into 2 main groups. Patients with TRRAP mutations affecting residues 1031-1159 have a more severe disorder, often with multisystem involvement, including renal, cardiac, and genitourinary systems, as well as structural brain abnormalities. Patients with mutations outside of that region tend to have a less severe phenotype with a higher incidence of autism and usually no systemic involvement. Patients in both groups usually have somewhat similar dysmorphic facial features, such as upslanting palpebral fissures, hypertelorism, low-set ears, and broad or depressed nasal bridge, although these features are highly variable (summary by Cogne et al., 2019). [from OMIM]

Available tests

8 tests are in the database for this condition.

Clinical tests (8 available)

Molecular Genetics Tests

Genes See tests for all associated and related genes

  • Also known as: DEDDFA, DFNA75, PAF350/400, PAF400, STAF40, TR-AP, Tra1, TRRAP
    Summary: transformation/transcription domain associated protein

Clinical features

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Imported from Human Phenotype Ontology (HPO)

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