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Comment & Response
September 2014

Multiple System Atrophy and Repeat Expansions in C9orf72—Reply

Author Affiliations
  • 1Taub Institute for Research of Alzheimer’s Disease and the Aging Brain, Columbia University, New York, New York
  • 2Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, New York
JAMA Neurol. 2014;71(9):1191-1192. doi:10.1001/jamaneurol.2014.1811

In Reply We appreciate the comments by Schottlaender and colleagues concerning our article1 published in JAMA Neurology. We agree that the importance of our article was to highlight the variable phenotypes that are associated with C9orf72 expansions. To date, the reported C9orf72 expansion–associated phenotypes have been frontotemporal dementia, amyotrophic lateral sclerosis (ALS), frontotemporal dementia/ALS, Huntington disease–like disorders,2 psychiatric disorders, dementia of Lewy bodies,3 parkinsonism,4 and multiple system atrophy (MSA).1

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