Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Neurology. 2012 Sep 4;79(10):1002-11. doi: 10.1212/WNL.0b013e318268452e. Epub 2012 Aug 8.

Frontotemporal dementia due to C9ORF72 mutations: clinical and imaging features.

Author information

  • 1Department of Neurology, University of California, San Francisco, USA. ssha@memory.ucsf.edu

Abstract

OBJECTIVE:

To describe the phenotype of patients with C9FTD/ALS (C9ORF72) hexanucleotide repeat expansion.

METHODS:

A total of 648 patients with frontotemporal dementia (FTD)-related clinical diagnoses and Alzheimer disease (AD) dementia were tested for C9ORF72 expansion and 31 carried expanded repeats (C9+). Clinical and neuroimaging data were compared between C9+ (15 behavioral variant FTD [bvFTD], 11 FTD-motor neuron disease [MND], 5 amyotrophic lateral sclerosis [ALS]) and sporadic noncarriers (48 bvFTD, 19 FTD-MND, 6 ALS).

RESULTS:

All C9+ patients displayed clinical syndromes of bvFTD, ALS, or FTD-MND. At first evaluation, C9+ bvFTD patients had more delusions and greater impairment of working memory, but milder eating dysregulation compared to bvFTD noncarriers. C9+FTD-MND patients had a trend for longer survival and had an earlier age at onset than FTD-MND noncarriers. Voxel-based morphometry demonstrated more thalamic atrophy in FTD and FTD-MND carriers than in noncarriers.

CONCLUSIONS:

Patients with the C9ORF72 hexanucleotide repeat expansion develop bvFTD, ALS, or FTD-MND with similar clinical and imaging features to sporadic cases. Other FTD spectrum diagnoses and AD dementia appear rare or absent among C9+ individuals. Longer survival in C9+ FTD-MND suggests slower disease progression and thalamic atrophy represents a novel and unexpected feature.

Comment in

PMID:
22875087
[PubMed - indexed for MEDLINE]
PMCID:
PMC3430713
Free PMC Article

Images from this publication.See all images (3)Free text

Figure 1
Figure 2
Figure 3
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Write to the Help Desk