| Term Name: | X-linked neurodevelopmental disorder with poor or absent speech and behavioral abnormalities |
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| Synonyms: | NEDXSB |
| Definition: | A syndromic X-linked intellectual disability characterized by global developmental delay apparent from infancy, hypotonia with delayed walking or inability to walk, severe-to-profound intellectual disability with poor or absent speech, and early-onset epilepsy that has_material_basis_in hemizygous or heterozygous mutation in the IQSEC2 gene on chromosome Xp11. Females may be less severely affected than males. |
| Ontology: | Human Disease [DOID:0070698] ( DOID:0070698 ) |