Rare Zebra

Rare disease search prototype built on Orphanet data

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ORPHA:1799

Familial developmental dysphasia

Also called Billard-Toutain-Maheut syndrome, FOXP2-associated dysphasia

Body system
Neurological diseases
Inheritance pattern
Autosomal dominant
Typical age of onset
Childhood
Estimated prevalence
<1 / 1 000 000 (Worldwide)
Rarity class
<1 / 1 000 000

ORPHA:1799 is classified under "Neurological diseases" in the Orphanet nomenclature.

Common signs

  • Aphasia
  • Expressive language delay
  • Incomprehensible speech