Mutations in TITF-1 are associated with benign hereditary chorea

Academic Article

Abstract

  • Benign hereditary chorea (BHC) (MIM 118700) is an autosomal dominant movement disorder. The early onset of symptoms (usually before the age of 5 years) and the observation that in some BHC families the symptoms tend to decrease in adulthood suggests that the disorder results from a developmental disturbance of the brain. In contrast to Huntington disease (MIM 143100), BHC is non-progressive and patients have normal or slightly below normal intelligence. There is considerable inter- and intrafamilial variability, including dysarthria, axial dystonia and gait disturbances. Previously, we identified a locus for BHC on chromosome 14 and subsequently identified additional independent families linked to the same locus. Recombination analysis of all chromosome 14-linked families resulted initially in a reduction of the critical interval for the BHC gene to 8.4 cM between markers D14S49 and D14S278. More detailed analysis of the critical region in a small BHC family revealed a de novo deletion of 1.2 Mb harboring the TITF-1 gene, a homeodomain-containing transcription factor essential for the organogenesis of the lung, thyroid and the basal ganglia. Here we report evidence that mutations in TITF-1 are associated with BHC.
  • Published In

    Author List

  • Breedveld GJ; Van Dongen JWF; Danesino C; Guala A; Percy AK; Dure LS; Harper P; Lazarou LP; Van Der Linde H; Joosse M
  • Start Page

  • 971
  • End Page

  • 979
  • Volume

  • 11
  • Issue

  • 8