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Vicki Wheelock MD HDSA Center of Excellence at UC Davis ...

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2008: First drug approved by FDA for HD<br />

Tetrabenazine (TETRA study)<br />

• Double-blind, placebocontrolled<br />

study <strong>of</strong><br />

tetrabenazine in<br />

manifest HD<br />

• 84 people with HD,<br />

randomized 2:1 to TBZ<br />

or placebo for 12<br />

weeks<br />

• Primary endpoint:<br />

chorea score<br />

24

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