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Τετάρτη 27 Δεκεμβρίου 2017

l-Thyroxine-responsive drop attacks in childhood benign hereditary chorea: A case report

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Publication date: Available online 27 December 2017
Source:Brain and Development
Author(s): Tadashi Shiohama, Hirofumi Ohashi, Kenji Shimizu, Katsunori Fujii, Daiju Oba, Tomozumi Takatani, Mitsuhiro Kato, Naoki Shimojo
Benign hereditary chorea (BHC) is a rare autosomal dominant disease that is characterized by non-progressive chorea with early-childhood-onset, congenital hypothyroidism, and neonatal respiratory distress. Although tetrabenazine and levodopa are partly effective for chorea and drop attacks in some patients, there is no standard treatment option. We herein describe a childhood case of BHC that presented with l-thyroxine-responsive drop attacks. A genetic analysis revealed an interstitial deletion that included two enhancer regions of NKX2-1, providing genetic confirmation of BHC. This is the first report to inform the connection between thyroid function and drop attacks in BHC. Moreover, our findings identify l-thyroxine as a therapeutic option for the management of drop attacks in BHC.



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