Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.


An X-linked recessive disorder characterized by global developmental delay with impaired intellectual development, walking difficulties and poor or absent speech. Affected individuals display a distinctive phenotype characterized by postnatal growth retardation, variable head circumference with a prominent forehead and dysmorphic facial features, ocular abnormalities, and seizures.




Armfield X-linked mental retardation syndrome
Mental retardation syndrome, X-linked, Armfield type


Mental retardation


Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.

UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again