Timothy syndrome

What is Timothy syndrome?

A multi-system disorder characterized by cardiac, hand, facial and neurodevelopmental features that include QT prolongation, webbed fingers and toes, flattened nasal bridge, low-set ears, small upper jaw, thin upper lip, and characteristic features of autism or autistic spectrum disorders.

Other condition names

  • LQT8
  • Long QT syndrome type 8
  • Long QT syndrome-syndactyly syndrome

Inheritance type

Autosomal dominant


  • Worldwide: <1 in 1,000 000

Age of Onset

  • Antenatal
  • Neonatal
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