© 2014 International Parkinson and Movement Disorder Society. This is the peer reviewed version of the following article: Merwick et al (2015), Phenotypic Variation in a Caucasian Kindred with Chorea-Acanthocytosis. Mov Disord Clin Pract, 2: 86-89, which has been published in final form at https://doi.org/10.1002/mdc3.12117. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified…