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X-linked intellectual disability, Shashi type

Synonym(s) Syndromic X-linked intellectual disability type 11
Prevalence <1 / 1 000 000
Inheritance X-linked recessive
Age of onset Infancy
  • Q87.8
MeSH -
MedDRA -


This syndrome is characterised by moderate intellectual deficit, obesity, macroorchidism and a characteristic facies (large ears, a prominent lower lip and puffy eyelids). It has been described in nine boys from two families. Transmission is X-linked and the causative gene has been localised to the q21.3-q27 region of the X chromosome.

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