X-linked intellectual disability, Shashi type

What is X-linked intellectual disability, Shashi type?

X-linked intellectual disability, Shashi type 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.

Other condition names

  • Syndromic X-linked intellectual disability type 11

Inheritance type

X-linked recessive

Prevalence

  • Worldwide: <1 in 1,000 000

Age of Onset

  • Infancy
  • Neonatal
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