Intracranial calcifications and dystonia associated with a novel deletion of chromosome 8p11.2 encompassing SLC20A2 and THAP1

Weiyi Mu, Laura Tochen, Caroline Bertsch, Harvey Singer, Kristin Baranano

Research output: Contribution to journalArticle


Several genes located within the chromosome 8p11.21 region are associated with movement disorders including SLC20A2 and THAP1. SLC20A2 is one of four genes associated with primary familial brain calcification, a syndrome that also includes movement disorders, cognitive decline and psychiatric issues. THAP1 is associated with dystonia type 6, a dominantly inherited dystonia with variable expression. In addition, several reports in the French-Canadian population have described microdeletions within the 8p11.2 region presenting with dystonia-plus syndromes including brain calcifications. This case report describes a 12-year-old boy with brain calcifications and generalised dystonia associated with a deletion in the 8p11.2 region detected via single nucleotide polymorphism microarray. This report emphasises the importance of obtaining a microarray analysis in diagnosing movement disorders and suggests that this copy number variant may be an under-recognised cause of dystonia and brain calcifications.

Original languageEnglish (US)
Article numbere228782
JournalBMJ case reports
Issue number5
Publication statusPublished - May 1 2019



  • genetic screening/counselling
  • genetics
  • movement disorders (other than Parkinsons)
  • neuro genetics
  • neurology

ASJC Scopus subject areas

  • Medicine(all)

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